Title :
A K-band miniature, broadband, high output power HBT MMIC balanced doubler with integrated balun
Author :
Weng, Ching-Chih ; Tsai, Zuo-Min ; Wang, Huei
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A K-band frequency doubler using InGaP HBT is developed, which features high fundamental frequency rejection, flat conversion loss over wide bandwidth, and high saturation output power. To obtain a balanced signal, a compact on-chip lumped rat-race hybrid is implemented. The circuit exhibits a measured conversion loss of 4 dB over the output frequencies from 14 to 22 GHz. The fundamental frequency suppression is better than 20 dB and the second harmonic saturation output power is higher than 7.3 dBm with a miniature chip size of 1 mm × 1 mm.
Keywords :
III-V semiconductors; MMIC frequency convertors; baluns; bipolar integrated circuits; frequency multipliers; gallium compounds; heterojunction bipolar transistors; indium compounds; 14 to 22 GHz; 4 dB; HBT MMIC balanced doubler; InGaP; K-band miniature MMIC; broadband MMIC; flat conversion loss; frequency doubler; frequency rejection; frequency suppression; harmonic saturation; integrated balun; lumped rat-race hybrid; Bandwidth; Circuits; Frequency conversion; Frequency measurement; Heterojunction bipolar transistors; Impedance matching; K-band; Loss measurement; MMICs; Power generation;
Conference_Titel :
Microwave Conference, 2005 European
Print_ISBN :
2-9600551-2-8
DOI :
10.1109/EUMC.2005.1610253
