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... Shakil Bhuiyan #2 and Nemai Karmakar#3 # Department of Electrical & Computer Systems Engineering, Monash University, Building 72, Clayton Campus, 3800 VIC, Australia 1aminul.islam@monash.edu ... [2] S. Botao , C. Qiang, Y.... more
... Shakil Bhuiyan #2 and Nemai Karmakar#3 # Department of Electrical & Computer Systems Engineering, Monash University, Building 72, Clayton Campus, 3800 VIC, Australia 1aminul.islam@monash.edu ... [2] S. Botao , C. Qiang, Y. Amin, D.Mendoza et al, “An Ultra-low ...
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ABSTRACT This paper provides a short overview on the state of the art in electromagnetic transduction based chipless RFID sensors. These types of sensors can be used for various applications including structural health monitoring,... more
ABSTRACT This paper provides a short overview on the state of the art in electromagnetic transduction based chipless RFID sensors. These types of sensors can be used for various applications including structural health monitoring, pressure, airflow and displacement detection, temperature, humidity, partial discharge monitoring and so on. A novel concept of high resolution crack sensing using super wideband antenna is also introduced here along with a brief review on airflow and partial discharge sensors.
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ABSTRACT The novel beam steering technique of a phased array antenna using electromagnetic bandgap (EBG) assisted beam forming network is presented. Square patterned uniform EBG cells perturb the feedline of the antenna element of a... more
ABSTRACT The novel beam steering technique of a phased array antenna using electromagnetic bandgap (EBG) assisted beam forming network is presented. Square patterned uniform EBG cells perturb the feedline of the antenna element of a 4-element microstrip antenna array. ...
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4th generation chipless tag based on multiresonators is presented. The tag consist of a UWB monopole antenna loaded with multiple cascaded spiral EBGs which have a 1:1 correspondence with data bits. The 4th generation tag is less... more
4th generation chipless tag based on multiresonators is presented. The tag consist of a UWB monopole antenna loaded with multiple cascaded spiral EBGs which have a 1:1 correspondence with data bits. The 4th generation tag is less sensitive to tag orientation and has smaller size than earlier generations of the tag. A proof-of-concept tag is developed and tested which has
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Defected ground structure (DGS) has been analysed in terms of various microstrip discontinuities (quasi static approach). It has been shown that the junction capacitance plays an equally important role in determining the position of... more
Defected ground structure (DGS) has been analysed in terms of various microstrip discontinuities (quasi static approach). It has been shown that the junction capacitance plays an equally important role in determining the position of attenuation pole of the unit cell DGS as the gap capacitance. Theory is validated against simulation results by commercially available MoM Solver CST design environment. Good agreements between simulated and calculated results validate the theory.
... So far, the only commercially available chipless RFID tag is the SAW tag (developed by RF SAW®) but they are not fully printable and planar due to their piezoelectric nature [5]. The tagging of extremely low cost paper/plastic based... more
... So far, the only commercially available chipless RFID tag is the SAW tag (developed by RF SAW®) but they are not fully printable and planar due to their piezoelectric nature [5]. The tagging of extremely low cost paper/plastic based items demands a fully passive and printable ...
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... acrylamide. T. Tripathy a , SR Pandey a , NC Karmakar a , RP Bhagat b and RP Singh Corresponding Author Contact Information , E-mail The Corresponding Author , b.a Materials Science Centre, IIT, Kharagpur 721302, India. ...
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Research Interests:
Narottam Kumar Das 1), Nemai Chandra Karmakar1), Yasuhiro Yamayoshi2), and Hitoshi Kawaguchi2) ... 1) Faculty of Engineering, Monash University, Clayton Campus, VIC 3168, Australia. Tel: +61 3 9905-1252, Fax: +61 3 9905 3454, E-mail: ...
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... Electrical and Computer Systems Engineering Faculty of Engineering, Monash University, Clayton, VIC 3168, Australia Email: narottam.das@eng ... REFERENCES [1] GP Agrawal and NA Olsson, "Self-phase modulation and spectral... more
... Electrical and Computer Systems Engineering Faculty of Engineering, Monash University, Clayton, VIC 3168, Australia Email: narottam.das@eng ... REFERENCES [1] GP Agrawal and NA Olsson, "Self-phase modulation and spectral broadening of optical pulses in semiconductor ...
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AbstractWe have numerically analyzed the basic characteristics of all-optical demultiplexing (DEMUX) based on four-wave mixing (FWM) in semiconductor optical amplifiers (SOAs). For obtaining the high ON-OFF ratio, the optimum input pump... more
AbstractWe have numerically analyzed the basic characteristics of all-optical demultiplexing (DEMUX) based on four-wave mixing (FWM) in semiconductor optical amplifiers (SOAs). For obtaining the high ON-OFF ratio, the optimum input pump pulsewidth is 1~3 ps for 1 ps, ...
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Abstract-A fully printable, passive and planar chipless RFID tag on thin flexible substrate is presented. The chipless tag encodes data into the spectral signature using a multiresonating circuit. Both amplitude and phase components of... more
Abstract-A fully printable, passive and planar chipless RFID tag on thin flexible substrate is presented. The chipless tag encodes data into the spectral signature using a multiresonating circuit. Both amplitude and phase components of the spectral signature are used for data ...
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In this paper a CAD program which speeds up the design of inductor and transformer layouts has been presented. The main advantages of this program are the easy-to-use and efficient interface which allows the user to create a wide range of... more
In this paper a CAD program which speeds up the design of inductor and transformer layouts has been presented. The main advantages of this program are the easy-to-use and efficient interface which allows the user to create a wide range of different inductors in a short time, and without the need of a significant prior knowledge. The Expert Application Programming
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Road safety is a key problem in today's society. A novel application for the regulation of vehicle speed, trajectory, stopping and parking using chipless RFID tags installed into/on the road is proposed. The RFID reader with... more
Road safety is a key problem in today's society. A novel application for the regulation of vehicle speed, trajectory, stopping and parking using chipless RFID tags installed into/on the road is proposed. The RFID reader with antennas installed under the vehicle scans the on-road tags and acquires essential regulatory data such as addresses, speed limits, parking permits. The chipless RFID
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... The chipless RFID reader detects the resonances as attenuation in the magnitude and phase-jumps in the phase of the spectrum. The RFID reader operates between 1.9 and 2.5 GHz and can successfully detect a transponder at close range.... more
... The chipless RFID reader detects the resonances as attenuation in the magnitude and phase-jumps in the phase of the spectrum. The RFID reader operates between 1.9 and 2.5 GHz and can successfully detect a transponder at close range. The tag design can be transferred ...
Research Interests: Spectrum and Transponders
A RFID system with a chipless RFID tag on a 90-μm thin Taconic TF290 laminate is presented. The chipless tag encodes data into the spectral signature in both magnitude and phase of the spectrum. The design and operation of a prototype... more
A RFID system with a chipless RFID tag on a 90-μm thin Taconic TF290 laminate is presented. The chipless tag encodes data into the spectral signature in both magnitude and phase of the spectrum. The design and operation of a prototype RFID reader is also presented. The RFID reader operates between 5 - 10.7 GHz frequency band and successfully detects
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Research Interests:
The development of a simple low-cost RFID reader is presented. The RFID reader can operate in the frequency range between 2GHz and 2.5GHz. The reader is consisted of three main sections: AC (power supply) section, digital (control)... more
The development of a simple low-cost RFID reader is presented. The RFID reader can operate in the frequency range between 2GHz and 2.5GHz. The reader is consisted of three main sections: AC (power supply) section, digital (control) section and the RF section. Amplitude shift keying (ASK) demodulation (envelope detector) is used for decoding the signal from the RFID transponders. Simulated
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... This article reports our third generation chipless RFID tag with the following features over the first and second generation tags as reported in [4]-[5]: (i) the tag is printed on a flexible laminate Taconic TF-290 (εr=2.9, h=90μm... more
... This article reports our third generation chipless RFID tag with the following features over the first and second generation tags as reported in [4]-[5]: (i) the tag is printed on a flexible laminate Taconic TF-290 (εr=2.9, h=90μm ,tanδ=0.0028); (ii) the design is based on coplanar ...
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A novel chipless RFID transponder is presented that is both compact in size and robust in terms of performance. The transponder components have been designed and analysed using a full wave electromagnetic solver as well as with... more
A novel chipless RFID transponder is presented that is both compact in size and robust in terms of performance. The transponder components have been designed and analysed using a full wave electromagnetic solver as well as with measurements using a vector network analyzer and in an anechoic chamber. The novel transponder consists of a linearly polarized UWB circular monopole antenna
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ABSTRACT
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ABSTRACT This paper provides a short overview on the state of the art in electromagnetic transduction based chipless RFID sensors. These types of sensors can be used for various applications including structural health monitoring,... more
ABSTRACT This paper provides a short overview on the state of the art in electromagnetic transduction based chipless RFID sensors. These types of sensors can be used for various applications including structural health monitoring, pressure, airflow and displacement detection, temperature, humidity, partial discharge monitoring and so on. A novel concept of high resolution crack sensing using super wideband antenna is also introduced here along with a brief review on airflow and partial discharge sensors.
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Research Interests:
This paper presents the parametric study of a low-loss RF-MEMS shunt capacitive switch suitable for reconfigurable phased array antennas. The inductively tuned switch design is analyzed on the HP-ADS Momentum. The width and the height of... more
This paper presents the parametric study of a low-loss RF-MEMS shunt capacitive switch suitable for reconfigurable phased array antennas. The inductively tuned switch design is analyzed on the HP-ADS Momentum. The width and the height of the air bridge and the CPW line gap hence the bridge length are the three parameters of the switch that are varied to investigate
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... Sushim Mukul Roy, Isaac Balbin and Nemai Chandra Karmakar, Sr. ... 2002 [3] DM Pozar, Microwave Engineering, New York, Wiley - 1998 [4] T.Wuren, K. Taniya, I. Sakagami and M.Tahara, "Miniaturization of 3-way and 5-way Bagley... more
... Sushim Mukul Roy, Isaac Balbin and Nemai Chandra Karmakar, Sr. ... 2002 [3] DM Pozar, Microwave Engineering, New York, Wiley - 1998 [4] T.Wuren, K. Taniya, I. Sakagami and M.Tahara, "Miniaturization of 3-way and 5-way Bagley polygon power dividers", in Proc. ...
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Research Interests:
4th International Conference on Electrical and Computer Engineering ICECE 2006, 19-21 December 2006, Dhaka, Bangladesh ... TIME-DELAYS BETWEEN PUMP-PROBE PULSES IN ... Narottam Kumar Das'2, Nemai Chandra... more
4th International Conference on Electrical and Computer Engineering ICECE 2006, 19-21 December 2006, Dhaka, Bangladesh ... TIME-DELAYS BETWEEN PUMP-PROBE PULSES IN ... Narottam Kumar Das'2, Nemai Chandra Karmakarl', Yasuhiro Yamayoshi22, and Hitoshi ...
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AbstractWe have analyzed the nonlinear propagation characteristics and wave mixing of picosecond pulses in semiconductor optical amplifiers (SOAs) by the finite-difference beam propagation method (FD-BPM). From the simulation results, it... more
AbstractWe have analyzed the nonlinear propagation characteristics and wave mixing of picosecond pulses in semiconductor optical amplifiers (SOAs) by the finite-difference beam propagation method (FD-BPM). From the simulation results, it was found in the output waveform that ...
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... 1988. Figures Conveyor belt Chipless RFID Tags Tagged Items Reader Antennas ... M a gnitu d e (dB ) Simulated S11 Measured S11 Figure 4. Simulated and measured return loss of the chiplessRFID tag UWB monopole antenna. -40 -30 -20 -10... more
... 1988. Figures Conveyor belt Chipless RFID Tags Tagged Items Reader Antennas ... M a gnitu d e (dB ) Simulated S11 Measured S11 Figure 4. Simulated and measured return loss of the chiplessRFID tag UWB monopole antenna. -40 -30 -20 -10 0 0 30 60 90 120 150 180 210 ...
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RFID technology is taking the world by storm and there is a requirement for having cheap RFID tags. Chipless transponders offer cheap solutions which can compare with the barcode. We present two types of frequency signature based RFID... more
RFID technology is taking the world by storm and there is a requirement for having cheap RFID tags. Chipless transponders offer cheap solutions which can compare with the barcode. We present two types of frequency signature based RFID transponders using multiresonators and fractal antennas. In this article we present the novel chipless RFID concept and simulated and measured results of
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Research Interests: RFID, Resonators, Data Security, System, Radio Frequency, and 3 moreStorms, Transponders, and RFID Tags
A quasi-static equivalent circuit model of a dumbbell shaped defected ground structure (DGS) is developed. The equivalent circuit model is derived from the equivalent inductance and capacitance developed due to the perturbed returned... more
A quasi-static equivalent circuit model of a dumbbell shaped defected ground structure (DGS) is developed. The equivalent circuit model is derived from the equivalent inductance and capacitance developed due to the perturbed returned current path on the ground and the narrow gap, respectively. The theory is validated against the commercial full-wave solver CST Microwave Studio. Finally, the calculated results are
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This paper presents a brief overview on RFID, its market and focuses mainly on its regulatory issues and antenna design. Although both reader and tag antennas have been briefly discussed, tag antennas have got special mentions. Design... more
This paper presents a brief overview on RFID, its market and focuses mainly on its regulatory issues and antenna design. Although both reader and tag antennas have been briefly discussed, tag antennas have got special mentions. Design perspectives, types of antennas, products from the vendors and outcome of significant researches have got their places sequentially in this literature. Overview of
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An empirical formula for resonant frequency and simplified equivalent circuit model of a microstrip patch antenna in a circular cavity is presented. EEsof Touchstone simulations are used to validate the model. Based on the analysis and... more
An empirical formula for resonant frequency and simplified equivalent circuit model of a microstrip patch antenna in a circular cavity is presented. EEsof Touchstone simulations are used to validate the model. Based on the analysis and measured results different design curves are derived
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In this paper we present a comprehensive technological review of present RFID transponders (tags). Different classifications of RFID tags are made based upon previous classifications found in literature and on up-to-date analysis of... more
In this paper we present a comprehensive technological review of present RFID transponders (tags). Different classifications of RFID tags are made based upon previous classifications found in literature and on up-to-date analysis of available transponders on the market today.
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RFID is an exciting new automated contact-less data capturing technique that is finding more and more applications. In this paper we present a comprehensive review of available RFID reader units in the market today. A complete and... more
RFID is an exciting new automated contact-less data capturing technique that is finding more and more applications. In this paper we present a comprehensive review of available RFID reader units in the market today. A complete and detailed review of the reader system architecture and a classification of RFID readers based on their operating and communication principles and technologies are
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The negative image of a microstrip stepped-impedance lowpass filter (LPF) or hi-Z, low-Z filter is used on the ground plane to produce wide and deep stopband. This structure is simpler in design and more compact in size compared to... more
The negative image of a microstrip stepped-impedance lowpass filter (LPF) or hi-Z, low-Z filter is used on the ground plane to produce wide and deep stopband. This structure is simpler in design and more compact in size compared to conventional bandstop structures. The simulation and measured results show good agreement in 2.6 GHz 20-dB rejection bandwidth at 4 GHz center
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A chipless tag based on multiresonators with integrated temperature sensor is presented. The tag consists of a UWB monopole antenna loaded with multiple cascaded spiral EBGs which have a 1:1 correspondence with data bits. The data bits... more
A chipless tag based on multiresonators with integrated temperature sensor is presented. The tag consists of a UWB monopole antenna loaded with multiple cascaded spiral EBGs which have a 1:1 correspondence with data bits. The data bits are encoded into the spectrum hence the tag has a unique spectral signature. The chipless tag is less sensitive to tag orientation and
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... SUSHIM MUKUL ROY, ISAAC BALBIN Department of Electrical and Computer Systems Engineering, Monash University, Clayton, Victoria, Australia NEMAI CHANDRA KARMAKAR Department of Electrical and Computer Systems Engineering, Clayton,... more
... SUSHIM MUKUL ROY, ISAAC BALBIN Department of Electrical and Computer Systems Engineering, Monash University, Clayton, Victoria, Australia NEMAI CHANDRA KARMAKAR Department of Electrical and Computer Systems Engineering, Clayton, Victoria, Australia ...
... PAR Khaled OUAFI Page 2. ... « Je n'avais d'abord projeté qu'un mémoire de quelques pages ; mon sujet m'entraî- nant malgré moi, ce mémoire devint insensiblement une... more
... PAR Khaled OUAFI Page 2. ... « Je n'avais d'abord projeté qu'un mémoire de quelques pages ; mon sujet m'entraî- nant malgré moi, ce mémoire devint insensiblement une espèce d'ouvrage trop gros, sans doute, pour ce qu'il contient, mais trop petit pour la matière qu'il traite. ...
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ABSTRACT
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ABSTRACT
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... method. ... In the devel-opment of the equivalent-circuit model, the structure is assumed to be the combination of a pair of u-shaped filaments of ground ... For the compo-nents, quasi-static equivalent capacitances and inductances... more
... method. ... In the devel-opment of the equivalent-circuit model, the structure is assumed to be the combination of a pair of u-shaped filaments of ground ... For the compo-nents, quasi-static equivalent capacitances and inductances are calculated and matrix parameters are extracted ...
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ABSTRACT Smart materials for chipless RFID sensors have not been developed for the broadband/high speed wireless data communication yet. Their applications are confined to some dc and very high frequency physical sensors. In this paper,... more
ABSTRACT Smart materials for chipless RFID sensors have not been developed for the broadband/high speed wireless data communication yet. Their applications are confined to some dc and very high frequency physical sensors. In this paper, various smart materials for RF sensing applications and their characteristics in the influence of various physical parameters have been analyzed. The working principle of chipless RFID sensors along with their various design and experimental results as well as their potential application is also presented. This paper provides a pathway to low cost, passive, fully printable sensor nodes for realtime condition monitoring.
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The objective of this article is to review radio frequency identification (RFID) technology, its developments on RFID transponders, design and operating principles, so that end users can benefit from knowing which transponder meets their... more
The objective of this article is to review radio frequency identification (RFID) technology, its developments on RFID transponders, design and operating principles, so that end users can benefit from knowing which transponder meets their requirements. In this article, RFID system definition, RFID transponder architecture and RFID transponder classification based on a comprehensive literature review on the field of research are
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... troller and systems where the transponder is chipless. Das and Harrop [1] argue that the largest market in RFID lies with chip-less RFID as opposed to any type of chipped RFID because the cost of chipless tags is generally much... more
... troller and systems where the transponder is chipless. Das and Harrop [1] argue that the largest market in RFID lies with chip-less RFID as opposed to any type of chipped RFID because the cost of chipless tags is generally much lower than that of other tag types due to the ...
Research Interests: Microstrip Antennas, Radio Frequency Identification, Optical physics, Encoding, Open Circuit, and 10 moreRadar Cross Section, Large Scale, Transponders, Microstrip Patch Antenna, High Impedance Ground Fault, Electrical And Electronic Engineering, Resonance Frequency, Rfid Tag, Resonant Frequency, and Backscattering
A fully printable chipless RFID tag on a 90-??m-thin Taconic TF290 laminate is presented. The tag consists of two crosspolarized ultrawideband (UWB) antennas and a multiresonating circuit. The data encoding is performed in the... more
A fully printable chipless RFID tag on a 90-??m-thin Taconic TF290 laminate is presented. The tag consists of two crosspolarized ultrawideband (UWB) antennas and a multiresonating circuit. The data encoding is performed in the multiresonating circuit, which is comprised of multiple stopband spiral resonators. The resonators are optimized to operate on flexible laminate using two optimization techniques. Since TF290 has
Research Interests:
An RFID system, utilizing a chipless RFID tag on a 90 µm thin Taconic TF290 laminate, is presented. The chipless tag consists of two cross-polarized ultra-wideband antennas and a multi-resonating circuit. The data encoding is performed in... more
An RFID system, utilizing a chipless RFID tag on a 90 µm thin Taconic TF290 laminate, is presented. The chipless tag consists of two cross-polarized ultra-wideband antennas and a multi-resonating circuit. The data encoding is performed in the multi-resonating circuit, which is composed of multiple stop-band spiral resonators. The chipless tag encodes data into the spectral signature in both the magnitude and phase of the spectrum. The design and operation of two prototype RFID readers is also presented. The RFID readers operate between 1.9 GHz to 2.5 GHz and 5 GHz to 10.7 GHz, and can successfully detect a chipless tag at close range. The tag design can be easily transferred to plastic and paper, making it suitable for mass deployment for low-cost items. It has the potential to replace trillions of barcodes printed each year. The RFID reader is suitable for mounting over conveyor-belt systems.
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Now-a-days there is almost ubiquitous presence of RFID passive tags in supply chain, assembly lines and industries. It will gradually replace the conventional optical bar code system. Demand of RFID antennas with greater efficiency,... more
Now-a-days there is almost ubiquitous presence of RFID passive tags in supply chain, assembly lines and industries. It will gradually replace the conventional optical bar code system. Demand of RFID antennas with greater efficiency, smaller size and cost has increased over the ...
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The development of a simple low-cost RFID reader is presented. The RFID reader operates in the 2.4 GHz ISM frequency band. The developed RFID reader is capable to interrogate both active and passive transponders, which use ASK modulation.... more
The development of a simple low-cost RFID reader is presented. The RFID reader operates in the 2.4 GHz ISM frequency band. The developed RFID reader is capable to interrogate both active and passive transponders, which use ASK modulation. The reader is consisted of three main sections: AC (power supply) section, digital (control) section and the RF section (Fig.1). The AC
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A design of multi-section compact planar bandpass filter has been proposed. The filter uses two back to back three-section Chebyshev impedance transformers with a coupling gap. The 15 mm by 15 mm filter resonates at 5.28 GHz and yields 6%... more
A design of multi-section compact planar bandpass filter has been proposed. The filter uses two back to back three-section Chebyshev impedance transformers with a coupling gap. The 15 mm by 15 mm filter resonates at 5.28 GHz and yields 6% 3 dB cutoff bandwidth.
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A novel method for reading multi-resonator based chipless RFID tags using an UWB linear chirp signal is presented in this paper. For the reader, a coherent frequency modulated continuous wave (FMCW) bi-static radar receiver architecture... more
A novel method for reading multi-resonator based chipless RFID tags using an UWB linear chirp signal is presented in this paper. For the reader, a coherent frequency modulated continuous wave (FMCW) bi-static radar receiver architecture is used. A signal processing technique based on Hilbert transform is used to decode tag's data by detecting both amplitude and phase information. Accurate detection of the tag is achieved in simulations. With this interrogation technique, a very low cost chipless RFID reader with only one voltage controlled oscillator (VCO) is possible. In contrast to previous generation readers, this reader does not need any calibration tag to decode data.
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A fully printable, passive and planar chipless millimeter wave identification (MMID) tag at 30 GHz is presented. The chipless tag encodes data into the spectral signature using a multiresonator. Both amplitude and phase components of the... more
A fully printable, passive and planar chipless millimeter wave identification (MMID) tag at 30 GHz is presented. The chipless tag encodes data into the spectral signature using a multiresonator. Both amplitude and phase components of the spectral signature are used for data encoding. The chipless MMID tag is a prototype and comprises of a microstrip multiresonating circuit with 6 spiral
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ABSTRACT paper presents a novel approach to model and represent chipless radio-frequency identification (RFID) frequency signatures. The approach involves the geometrical representation of chipless RFID frequency signatures in a signal... more
ABSTRACT paper presents a novel approach to model and represent chipless radio-frequency identification (RFID) frequency signatures. The approach involves the geometrical representation of chipless RFID frequency signatures in a signal space. A small set of orthonormal basis functions is derived using singular value decomposition in order to represent the 2b possible tag signatures of a b-bit chipless tag. Each tag signature is represented as a point in an L-dimensional signal space, and minimum distance detection is used to extract the information bit sequence of the tag. Detection error probability is also examined through analytical derivations and Monte Carlo simulation. A set of 3-bit tags were fabricated to validate the approach. Experimental results show that the new approach is capable of accurately detecting information contained in chipless RFID tags. This approach offers a solid mathematical framework for developing novel detection methods for chipless tags.
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Abstract A novel chipless RFID Transponder is presented that is both compact in size and robust in terms of performance. The transponder components have been designed and analysed using a full wave electromagnetic solver as well as with... more
Abstract A novel chipless RFID Transponder is presented that is both compact in size and robust in terms of performance. The transponder components have been designed and analysed using a full wave electromagnetic solver as well as with measurements using a vector ...
Research Interests:
... So far, the only commercially available chipless RFID tag is the SAW tag (developed by RF SAW®) but they are not fully printable and planar due to their piezoelectric nature [5]. The tagging of extremely low cost paper/plastic based... more
... So far, the only commercially available chipless RFID tag is the SAW tag (developed by RF SAW®) but they are not fully printable and planar due to their piezoelectric nature [5]. The tagging of extremely low cost paper/plastic based items demands a fully passive and printable ...
Research Interests:
The novel beam steering technique of a phased array antenna using electromagnetic bandgap (EBG) assisted beam forming network is presented. Square patterned uniform EBG cells perturb the feedline of the antenna element of a 4-element... more
The novel beam steering technique of a phased array antenna using electromagnetic bandgap (EBG) assisted beam forming network is presented. Square patterned uniform EBG cells perturb the feedline of the antenna element of a 4-element microstrip antenna array. ...
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Conventional 2-D uniform hole patterned photonic bandgap structures (PBGSs) have been replaced by 1-D uniform circular PBGSs as they provide very similar performances. This concept is utilized to investigate the effectiveness in harmonic... more
Conventional 2-D uniform hole patterned photonic bandgap structures (PBGSs) have been replaced by 1-D uniform circular PBGSs as they provide very similar performances. This concept is utilized to investigate the effectiveness in harmonic suppression. They have ...
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Radio-frequency identification (RFID) is a wireless data capturing technique that utilizes radio frequency (RF) waves for automatic identification of objects. RFID relies on RF waves for data transmission between the data carrying device,... more
Radio-frequency identification (RFID) is a wireless data capturing technique that utilizes radio frequency (RF) waves for automatic identification of objects. RFID relies on RF waves for data transmission between the data carrying device, called the RFID tag, and the interrogator.