Title :
High efficiency transmitter front-ends integrated with planar antennas and PBG
Author :
Hang, Cynthia Y. ; Deal, W.R. ; Qian, Yongxi ; Itoh, Tatsuo
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
In this paper, we present two novel design architectures that utilizing either a periodic structure or an active integrated antenna (AIA) for harmonic tuning in transmitter front-end designs. These techniques promise to significantly improve the power amplifier efficiency, reduce losses and weight, as well as maintaining good linearity requirements of advanced wireless communication systems. We will illustrate these two concepts through several design examples that have been developed recently, including a power amplifier integrated with novel PBG ground plane for harmonic tuning and four push-pull PA design examples, where the AIA concept is implemented to allow antenna to serve as a power combiner, a harmonic tuning load, in addition to its original functionality as a radiating element
Keywords :
active antennas; circuit tuning; differential amplifiers; periodic structures; photonic band gap; power amplifiers; radio transmitters; RF transmitter front-end; active integrated antenna; design architecture; harmonic tuning; linearity; loss; periodic structure; photonic band gap ground plane; planar antenna; power added efficiency; power combiner; push-pull power amplifier; wireless communication system; Broadband amplifiers; High power amplifiers; Microstrip; Periodic structures; Planar arrays; Power amplifiers; Power harmonic filters; Power system harmonics; Slot antennas; Transmitters;
Conference_Titel :
Microwave Conference, 2000 Asia-Pacific
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6435-X
DOI :
10.1109/APMC.2000.925972
