... Four independently steerable beams can be synthesised using an array of 24 Vivaldi antennas, ... more ... Four independently steerable beams can be synthesised using an array of 24 Vivaldi antennas, LNAs and buffer amplifiers plus 52 amplitude and phase control channels. ... REFERENCES [1] W. Ciccognani, F. Di Paolo, E. Limiti, PE Longhi, A. Serino. ...
In this paper a first iteration design, fabrication and test of a two-stage X-band MMIC HPA in mi... more In this paper a first iteration design, fabrication and test of a two-stage X-band MMIC HPA in micro-strip AlGaN/GaN technology is reported. With 20 V drain voltage operating bias point, at 3 dB compression point, the HPA delivers a pulsed output power ranging from 21 to 28.5 W, an associated gain from 12.9 to 16.5 dB and an associated PAE
A method for determining the noise parameters of high frequency field-effect transistors is prese... more A method for determining the noise parameters of high frequency field-effect transistors is presented. It has been developed by expressing the chain correlation matrix of the device as a function of its H-parameters and two frequency- dependent equivalent noise temperatures. The noise temperatures are determined utilizing the H-parameters and the 50 Omega noise figure of the device measured at a
Electronic Engineering Department, Università di Roma Tor Vergata. Via del Politecnico,1 00133 Ro... more Electronic Engineering Department, Università di Roma Tor Vergata. Via del Politecnico,1 00133 Roma - ITALY longhi@ing.uniroma2.it Abstract The role of the impedance load when dealing with noisy two port networks is investigated. Its value acts directly on input and output ...
Citazione: Colantonio, P., Giannini, F., Limiti, E., Orengo, G., Scucchia, L., Serino, A., et al.... more Citazione: Colantonio, P., Giannini, F., Limiti, E., Orengo, G., Scucchia, L., Serino, A., et al.(2005). Microelettronica a radio frequenza per applicazioni spaziali. In ElEm 2005 XI Giornata di studio sull'ingegneria delle microonde.
... Four independently steerable beams can be synthesised using an array of 24 Vivaldi antennas, ... more ... Four independently steerable beams can be synthesised using an array of 24 Vivaldi antennas, LNAs and buffer amplifiers plus 52 amplitude and phase control channels. ... REFERENCES [1] W. Ciccognani, F. Di Paolo, E. Limiti, PE Longhi, A. Serino. ...
In this paper a first iteration design, fabrication and test of a two-stage X-band MMIC HPA in mi... more In this paper a first iteration design, fabrication and test of a two-stage X-band MMIC HPA in micro-strip AlGaN/GaN technology is reported. With 20 V drain voltage operating bias point, at 3 dB compression point, the HPA delivers a pulsed output power ranging from 21 to 28.5 W, an associated gain from 12.9 to 16.5 dB and an associated PAE
A method for determining the noise parameters of high frequency field-effect transistors is prese... more A method for determining the noise parameters of high frequency field-effect transistors is presented. It has been developed by expressing the chain correlation matrix of the device as a function of its H-parameters and two frequency- dependent equivalent noise temperatures. The noise temperatures are determined utilizing the H-parameters and the 50 Omega noise figure of the device measured at a
Electronic Engineering Department, Università di Roma Tor Vergata. Via del Politecnico,1 00133 Ro... more Electronic Engineering Department, Università di Roma Tor Vergata. Via del Politecnico,1 00133 Roma - ITALY longhi@ing.uniroma2.it Abstract The role of the impedance load when dealing with noisy two port networks is investigated. Its value acts directly on input and output ...
Citazione: Colantonio, P., Giannini, F., Limiti, E., Orengo, G., Scucchia, L., Serino, A., et al.... more Citazione: Colantonio, P., Giannini, F., Limiti, E., Orengo, G., Scucchia, L., Serino, A., et al.(2005). Microelettronica a radio frequenza per applicazioni spaziali. In ElEm 2005 XI Giornata di studio sull'ingegneria delle microonde.
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