Outphasing Class-E/ F2 Power Amplifier using a Quadrature Hybrid as Non-Isolating Combiner

Autor: Ana Cordero, Jose A. Garcia, David Vegas, M. Nieves Ruiz

Publikováno v: IEEE Topical Conference on RF/Microwave Power Amplifiers for Radio and Wireless Applications (PAWR): Virtual Conference, San Diego, CA, 2021, 55-58
UCrea Repositorio Abierto de la Universidad de Cantabria
Universidad de Cantabria (UC)

This paper presents a GaN HEMT outphasing power amplifier (PA), based on a class-E/ F 2 topology with reduced sensitivity to variable resistive load operation, designed to provide output power control over an extended range with high efficiency. A 90

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97031e7366ba978d815fbe8616121941
https://doi.org/10.1109/pawr51852.2021.9375540

UHF class E/F2 outphasing transmitter for 12 dB PAPR signals

Autor: Jose-Ramon Perez-Cisneros, David Vegas, M. Nieves Ruiz, Jose A. Garcia

Publikováno v: IEEE/MTT-S International Microwave Symposium (IMS 2019), Boston, MA, USA, 2019, 71-74
UCrea Repositorio Abierto de la Universidad de Cantabria
Universidad de Cantabria (UC)

This paper exploits the degree of freedom provided by the continuous class-E modes in order to reduce the impact of a FET on-state resistance when approximating the zero voltage switching (ZVS) operation along a wide range of resistive loads. A UHF c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2e5b4227677fb2778dae3506ecf16a8
http://hdl.handle.net/10902/18254

A high-performance Ka-band cryo-cooled receiver for deep space applications

Autor: S. Halte, Cédric Chambon, Angel Mediavilla, B. Fauroux, Juan Luis Cano, L. de la Fuente, David Vegas, Antonio Tazón, R. Rayet, Eduardo Artal, Steve Rawson

Publikováno v: 48th European Microwave Conference (EuMC), Madrid, 2018, 926-929
UCrea Repositorio Abierto de la Universidad de Cantabria
Universidad de Cantabria (UC)

This paper describes the design of a ground station antenna feed system, that includes feed horn, polarizer, rejection filter, mono-pulse tracking coupler and low noise amplifiers with polarisation switching. The entire feed system assembly is cooled

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0dfc0e9de08b2f365369121db1963fbf
http://hdl.handle.net/10902/15183

GaN HEMT class-E rectifier for DC+AC power recovery

Autor: Jose R. Perez-Cisneros, Jose A. Garcia, David Vegas, M. Nieves Ruiz

Publikováno v: IEEE MTT-S International Microwave Symposium (IMS), Honolulu, Hawai, 2017, 318-321
UCrea Repositorio Abierto de la Universidad de Cantabria
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A 915 MHz GaN HEMT-based class-E rectifier is proposed in this paper to be used for DC+AC wireless power recovery. Taking advantage of the time reversal (TR) duality principle, the rectifier was derived from a class-E inverter, whose output network w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd8e56374165dea3e5c7a2aabc1d72ae
https://doi.org/10.1109/mwsym.2017.8059108

Efficient class-E power amplifier for variable load operation

Autor: Jose A. Garcia, Felipe Moreno, David Vegas, M. Nieves Ruiz

Publikováno v: International Workshop on Integrated Nonlinear Microwave and Millimetre-wave Circuits (INMMiC), Graz, Austria, 2017, 91-93
UCrea Repositorio Abierto de la Universidad de Cantabria
Universidad de Cantabria (UC)

In this paper, a GaN HEMT class-E power amplifier (PA) has been designed for efficiently operating under variable load resistance at the 750 MHz frequency band. The desired zero voltage switching (ZVS) of the device can be approximated for a wide ran

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f0d28500a4bf7f3387edc43bdd71171
http://hdl.handle.net/10902/11467