A High Efficiency Power Amplifier Integrated with a CPW Patch Antenna
 |
|
Описание:
In this work, the CPW-fed aperture-coupled patch antenna is studied for the purpose of integration with a high efficiency power amplifier. The design of a high-efficiency power amplifier using an active multi-harmonic load-pull system is described. The load-pull system is constructed using six-port circuits and can independently vary the output load of a transistor at its fundamental operating frequency, as well as at the second and third harmonics. The system is used to find the efficiency-optimizing output loads of a commercial transistor operating at a class B bias point. A power amplifier with a gain of 7.1 dB and a PAE of 58.6% operating at a fundamental frequency of 3.5 GHz with an input power of 4mW is obtained. A CPW-fed slot-coupled patch antenna is designed to act as both a radiating element and an impedance element, producing the transistor’s experimentally determined efficiency-optimizing load at the fundamental frequency. A CPW circuit comprising of internally patterned...Похожие книги
 | Broadband Opto-Electrical Receivers in Standard CMOS (Analog Circuits and Signal Processing) Автор: Carolien Hermans, Michiel Steyaert Год: 2007 |
 | Dynamic offset compensated CMOS amplifiers Автор: Frerik Witte,Johan F Witte,Kofi A A Makinwa,Johan H Huijsing Год: 2009 |
 | Buffer amplifier Год: 2011 |
 | Foundations and Industrial Applications of Microwave and Radio Frequency Fields Автор: G. Roussy Год: 1995 |