Title :
A new balanced amplifier using 6-port power divider
Author :
Jong-Sik Lim ; Soon-Young Eom ; Jae-Hee Han ; Seong-Hun Kim ; Deok-Hee Lee ; Sangwook Nam
Author_Institution :
Dept. of Electr. Eng., Seoul Nat. Univ., South Korea
Abstract :
A new balanced amplifier using the 6-port power divider is proposed. The power divider used in this balanced amplifier has a totally planar structure, and needs no internal resistor and termination. The measured insertion loss of the 2-port back-to-back power divider/combiner for the balanced amplifier is around 0.7 dB, which is a reasonable value at 10 GHz. In power measurement, the 1 dB output power compression point of the proposed balanced amplifier is twice that of the single-ended amplifier as predicted. The measured performances show that the proposed amplifier can be applied as a new balanced amplifier.
Keywords :
HEMT integrated circuits; differential amplifiers; field effect MMIC; microwave power amplifiers; multiport networks; power dividers; 0.7 dB; 10 GHz; HEMT; S parameters; back-to-back power divider/combiner; balanced amplifier; elliptic band pass filter characteristics; insertion loss; power compression point; six-port power divider; totally planar structure; High power amplifiers; Insertion loss; Loss measurement; Performance evaluation; Power amplifiers; Power combiners; Power dividers; Power generation; Power measurement; Resistors;
Conference_Titel :
Microwave Symposium Digest, 2001 IEEE MTT-S International
Conference_Location :
Phoenix, AZ, USA
Print_ISBN :
0-7803-6538-0
DOI :
10.1109/MWSYM.2001.967132
