Title :
A RX cancellation loop configuration for power amplifier module
Author :
Jeong, Yong-Chae ; Park, Jun-Seok ; Ahn, Dal ; Lim, Jae-Bong
Author_Institution :
Div. of Electron. & Inf., Chonbuk Nat. Univ., Chonju, South Korea
Abstract :
A cancellation loop configuration for power amplifier modules is proposed to reject RX signals using a feed-forward technique. In this paper, we implement the 1W-amplifier module to show the validity of the proposed cancellation loop. The power amplifier module can provide low TX insertion path loss due to its duplexer and the choice of loose RX attenuation characteristics for various wireless communication systems. It shows at least 90 % improved RX rejection characteristics compared to power amplifier modules without the RX band cancellation loop
Keywords :
UHF power amplifiers; band-pass filters; feedforward; interference suppression; linearisation techniques; 1 W; RX bandpass filter; RX cancellation loop configuration; RX signal rejection; duplexer; feed-forward linearizer; feed-forward technique; loose RX attenuation characteristic; low TX insertion path loss; power amplifier module; wireless communication systems; Attenuation; Band pass filters; Costs; Feedforward systems; Phase distortion; Power amplifiers; Power generation; Radio frequency; Radiofrequency amplifiers; Wireless communication;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985348
