Binod Kanaujia
Jawaharlal Nehru University, SC&IS, Undergraduate
A CPW-fed diamond-shaped UWB monopole antenna with dual band-notched characteristics at WiMAX (3.3-3.7 GHz) and WLAN (5.15-5.825 GHz) band is proposed. The proposed antenna consists of a CPW-fed diamond shaped monopole radiator, two... more
A CPW-fed diamond-shaped UWB monopole antenna with dual band-notched characteristics at WiMAX (3.3-3.7 GHz) and WLAN (5.15-5.825 GHz) band is proposed. The proposed antenna consists of a CPW-fed diamond shaped monopole radiator, two vertically extended ground planes around the radiator, rotated C-shaped and inverted L-shaped slits. The antenna is fabricated on 1.6 mm thick FR4 material with an overall size of 25 × 23 mm and offers an ultra-wide bandwidth from 2.49-12.8 GHz with dual band-notched characteristics at the WiMAX (3.1-3.8 GHz) and WLAN (4.9-5.8 GHz) bands without affecting the radiation performance of the antenna. Dual bandnotched characteristics at 3.1-3.8 GHz (WiMAX) and 4.9-5.8 GHz (WLAN) are achieved due to inserting an inverted L-shaped slit on the ground plane and a rotated C-shaped slit on the radiating monopole, respectively. Thus, the antenna is suitable to be integrated into the portable devices without EMI interference at WiMAX and WLAN bands.
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This study proposes a new hepta-band antenna that consists of an inductive ground plane and slots loaded patch for the multiband body-worn scenario. The phase distribution is optimised by considering a 7 × 7 array of periodic square... more
This study proposes a new hepta-band antenna that consists of an inductive ground plane and slots loaded patch for the multiband body-worn scenario. The phase distribution is optimised by considering a 7 × 7 array of periodic square patches on the metallic ground-backed substrate in such a way that resonant modes of patch slots interact with the resonant modes of meta-resonators of inductive ground to achieve hepta-band behaviour with desired radiation characteristics. Each unit cell corresponds to a phase shift of 3.6° out of available phase distribution of 180°. The seven bands are targeted at 1.8, 2.45, 2.96, 3.5, 3.8, 4.2, and 4.5 GHz which supports GSM (1.8 GHz), WLAN (2.4 GHz), LTE (2.5 GHz), Wi-MAX (3.5 GHz), sub-6 GHz 5G band (3.4-4.2 GHz), navigation (2.96 GHz), and satellite (4.5 GHz) applications. It is also demonstrated that an inductive ground plane can be used to get reduced SAR and increased FBR, making antenna useful for wearable applications. The proposed antenna has a patch size of 28.84 × 28.84 mm upon a 0.4 mm thick substrate of permittivity 4.3. Inductive ground is made of via-free periodic square patches each of size 5 × 5 mm on the 2.6 mm thick metallic ground-backed substrate.
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This work proposes a performance of the cascode Class-EF−1 power amplifier (PA) for UWB radar transmitter. The cascode Class-E PA with built-in techniques overcomes the traditional mismatch and provides good performance of PA. Incurs the... more
This work proposes a performance of the cascode Class-EF−1 power amplifier (PA) for UWB radar transmitter. The cascode Class-E PA with built-in techniques overcomes the traditional mismatch and provides good performance of PA. Incurs the resonance and switching effect is observed in cascode Class-E PA that compensates for the parasitic effects and provides a wide-impedance range. While design-II includes negative capacitance and inverse Class-F, which achieves a redundant performance of wide bandwidth and power-added efficiency (PAE). Design-II achieves the redundant performance compared with design-I. Both design-I and design-II are implemented and analysed through simulation and experimental results using RF 65 nm Samsung Magnachip Hynix CMOS process. Design-I achieves a wide-impedance bandwidth ranging from 3 to 11.7 GHz with drain efficiency (DE) and maximum PAE of 80 and 73% at the output power of 26.4 dBm. The global efficiency (GE) and error vector magnitude (EVM) of 70 and 5.2% are also achieving for design-I. The redundant performance in design-II achieves wide bandwidth with operating frequency range of 2–13 GHz with maximum DE and PAE of 85 and 76%. For design-II, GE and EVM are investigated as 68 and 4.9% that could validate the accuracy and robustness of the UWB radar.
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ABSTRACT In this paper, an inset-fed dual-band patch antenna with truncated corners is presented. The ground plane of the antenna is loaded with D-shaped complementary split ring resonator (D-CSRR) structures to obtain dual-band resonance... more
ABSTRACT In this paper, an inset-fed dual-band patch antenna with truncated corners is presented. The ground plane of the antenna is loaded with D-shaped complementary split ring resonator (D-CSRR) structures to obtain dual-band resonance and size miniaturization. The overall electrical size of the antenna is 0.29λ0 × 0.25λ0 and patch size is 0.14λ0 × 0.13λ0, where λ0 is evaluated at the lowest resonating frequency. The proposed planar antenna is low profile and does not need a dual feed or any external feeding mechanism for obtaining circular polarization. A size reduction of 66% is achieved as compared to the conventional patch antenna. The newly designed D-CSRR results in better miniaturization factor making proposed antenna suitable for modern wireless applications. The prototype of the antenna is fabricated and experimental findings are compared with electromagnetic and analytical results.
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ABSTRACT A wide band Microstrip antenna with defected ground plane structure is proposed for Ku Band applications. The design procedure is presented and characteristics of the antenna are analyzed. A 50-ohm Microstrip line is used to... more
ABSTRACT A wide band Microstrip antenna with defected ground plane structure is proposed for Ku Band applications. The design procedure is presented and characteristics of the antenna are analyzed. A 50-ohm Microstrip line is used to excite the circular slot integrated in ground plane. The measured results demonstrate that the structure exhibits a wide impedance bandwidth of 56.67% ranging from 9.8 GHz to 17.55 GHz, which covers Ku-band and partially X-band. Within the band, stable radiation characteristics are observed. The designed antenna has a gain ranging from 5dBi to 12.1dBi in impedance bandwidth range. Isolation of about 20dB is observed between the co-polar and Cross-polarization level.
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ABSTRACT In this article, a study of a triple band notched circular ring monopole ultrawide band (UWB) antenna is presented. The UWB antenna consists of a circular ring radiating patch and rectangular ground plane with two small slots... more
ABSTRACT In this article, a study of a triple band notched circular ring monopole ultrawide band (UWB) antenna is presented. The UWB antenna consists of a circular ring radiating patch and rectangular ground plane with two small slots near the feed line for bandwidth enhancement. The proposed antenna can reject worldwide interoperability for microwave access (WiMAX) band (3.3–3.8 GHz), wireless local area network (WLAN) band (5–6 GHz) and X-band downlink satellite communication band (7.1–7.9 GHz). The WiMAX and WLAN band rejections are realized by introducing two arc shaped elliptical slots and single elliptical split ring slot in the radiating patch, respectively. Furthermore, a pair of rectangular single split ring resonators is used to obtain the rejection of X-band downlink satellite communication signal. The proposed UWB antenna is fabricated and measured. The measured results are in good agreement with the simulated ones. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:668–672, 2015
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ABSTRACT A novel single-feed circularly polarized microstrip antenna with compact size is proposed for indoor wireless local area network (WLAN) applications. The antenna structure consists of eight slits which are introduced at the... more
ABSTRACT A novel single-feed circularly polarized microstrip antenna with compact size is proposed for indoor wireless local area network (WLAN) applications. The antenna structure consists of eight slits which are introduced at the boundary and the corners in the radiating square patch with a cross-slot at the center. The proposed antenna shows a compactness of 42% compared with the conventional circularly polarized antenna design at indoor WLAN frequency band. It is found that the resonance frequency of the proposed structure is highly depending on length and width of cross-slot and corner slit for entire band of circular polarization. The 3 dB axial ratio bandwidth of the proposed antenna is 1.9%. Proposed structure is fabricated on the FR-4 epoxy substrate and fed by a single coaxial probe. Measured results show a good agreement with the simulated results. Antenna shows stable radiation characteristics for the entire operating band. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1313–1317, 2014
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ABSTRACT An M-shaped monopole-like slot Ultra wideband (UWB) antenna is proposed for UWB applications. The proposed antenna usages, an M-shaped radiator in place of the conventional monopole patch antenna to achieve UWB frequency. The... more
ABSTRACT An M-shaped monopole-like slot Ultra wideband (UWB) antenna is proposed for UWB applications. The proposed antenna usages, an M-shaped radiator in place of the conventional monopole patch antenna to achieve UWB frequency. The ground plane is also modified by cutting rectangular slots. Therefore, the ground plane works like a radiator that resonates at lower band of UWB. The antenna is practically fabricated and simulated. Measured results show a good agreement with simulated results. The prototype with compact overall size of 36 mm × 36 mm × 1.6 mm achieves good impedance matching, constant gain, and stable radiation patterns over an operating bandwidth of 2.38–12.40 GHz (10.02 GHz). © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:127–131, 2014
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ABSTRACT In this paper, a novel orthogonal slit cut stacked circular patch antenna (SC-SCPA) is proposed for multi band operations. The antenna structure is investigated by cutting two pair of orthogonal slits on the upper patch whose... more
ABSTRACT In this paper, a novel orthogonal slit cut stacked circular patch antenna (SC-SCPA) is proposed for multi band operations. The antenna structure is investigated by cutting two pair of orthogonal slits on the upper patch whose effects are studied in terms of the return loss, input impedance, gain, directivity, and radiation pattern. Multiple resonances are observed that too at lower frequency signifying the compactness and multiband nature of the proposed antenna. The antenna is resonating at four operating frequencies 7.4, 9.0, 9.4, and 10.8 GHz, and 27% reduction in size is achieved by slit cut stacked patch antenna. The proposed theory which is verified by simulation and theoretical results is in good agreement with the simulated results obtained by Ansoft's HFSS. The antenna is working in X-band from 7 to 12 GHz and applications pertaining to this regime are also discussed herein. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:873–882, 2013; View this article online at wileyonlinelibrary.com. DOI: 10.1002/mop.27416
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AbstractThe analysis conducted on Gunn integrated annular ring microstrip antenna and evaluation of various parameters such as input impedance, voltage standing-wave radio voltage standing wave ratio (VSWR), return loss, bandwidth,... more
AbstractThe analysis conducted on Gunn integrated annular ring microstrip antenna and evaluation of various parameters such as input impedance, voltage standing-wave radio voltage standing wave ratio (VSWR), return loss, bandwidth, radiation pattern, beamwidth, etc., as a ...
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... 2186-2194. [7] Guey-liou Lan and Dipak L. Sengupta, "Frequency agile circular microstrip antennas", IEEE Symposium ofMTT 1985, pp. 693-695. [8] SV Shynu, and G. Augustin, CK Anandan, P. Mohanan and K. Vasudevan, "Design... more
... 2186-2194. [7] Guey-liou Lan and Dipak L. Sengupta, "Frequency agile circular microstrip antennas", IEEE Symposium ofMTT 1985, pp. 693-695. [8] SV Shynu, and G. Augustin, CK Anandan, P. Mohanan and K. Vasudevan, "Design of compact reconfigurable dual microstrip ...
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ABSTRACT This paper presents a novel slit cut circular patch antenna (SC-CPA) with supers rate. An analysis of triple band slit cut circular patch antenna with supers rate is presented and results are verified by simulation. Various... more
ABSTRACT This paper presents a novel slit cut circular patch antenna (SC-CPA) with supers rate. An analysis of triple band slit cut circular patch antenna with supers rate is presented and results are verified by simulation. Various parameters of antenna such as input impedance, return loss and gain are investigated. The parametric study of frequency response of antenna is carried out for different heights of dielectric supers rate or cover causing the lowering of the resonant frequencies. The proposed antenna possessing triple band characteristics and resonates at 7.2 GHz, 8.5 GHz, and 10 GHz. Antenna possess a peak gain of 2.15 dB with a compactness level of around 20%. Antenna is investigated to provide protection from environmental hazards and it is worth for triple band operations.