Title :
Design of a RF fixed phase control circuit using adaptive vector control
Author :
Jeong, Se Woong ; Oh, In-Ju ; Jeong, Yong-Chae ; Kim, Young
Author_Institution :
Div. of Electron. & Inf. Eng., Chonbuk Nat. Univ., Chonju, South Korea
Abstract :
For conventional feedforward type delay lines, phase variation with external temperature has not been considered. This phase variation is the main cause of low linearizer efficiency. In this paper, a new type of vector phase controller using a vector theory is proposed to solve the problem of delay line phase variation. As a result, when the input signal consists of one or two with a phase variation of ±10° in a 10 dB dynamic range, the phase of the delay line is changed within 0.35° and amplitude is changed by less than 0.07 dB
Keywords :
UHF phase shifters; UHF power amplifiers; delay lines; feedforward; linearisation techniques; phase control; vectors; 877 MHz; 882 MHz; RF fixed phase control circuit design; adaptive vector control; analog controlled feedforward linearizer; analog controlled linear power amplifier; delay line phase variation; linear power amplifier; linearizer efficiency; reflective phase shifter; vector phase controller; Adaptive control; Circuits; Delay lines; Equations; High power amplifiers; Insertion loss; Phase control; Programmable control; Radio frequency; Temperature;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985347
