Title :
Compact 5.2-GHz GaInP/GaAs HBT Gilbert upconverter using lumped rat-race hybrid and current combiner
Author :
Meng, C. ; Tzung-Han Wu ; Mingchi Lin
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
A compact 5.2-GHz Gibert upconversion mixer is demonstrated using the 2-μm GaInP/GaAs heterojunction bipolar transistor (HBT) technology. A miniature lumped-element rat-race hybrid and an LC current combiner are used in the LO port and the RF port of the upconversion Gilbert mixer, respectively. The effect of the LC current combiner with inductor loss is established in this letter. An active IF balun is incorporated in the Gilbert upconverter with no extra power consumption. The fully integrated Gilbert upconverter has conversion gain of 1 dB, OP/sub 1 dB/ of -10 dBm, and OIP3 of 2dBm when input IF=300 MHz, LO=4.9 GHz, and output RF=5.2 GHz.
Keywords :
III-V semiconductors; MMIC mixers; bipolar MMIC; current mirrors; gallium compounds; heterojunction bipolar transistors; indium compounds; lumped parameter networks; 1 dB; 2 dB; 2 micron; 300 MHz; 4.9 GHz; 5.2 GHz; GaInP-GaAs; Gilbert upconversion mixer; Gilbert upconverter; IF balun; LC current combiner; LO port; RF port; current mirror; heterojunction bipolar transistor; inductor loss; lumped rat-race hybrid; Dynamic range; Energy consumption; Gain; Gallium arsenide; Heterojunction bipolar transistors; Impedance matching; Inductors; Microstrip; Radio frequency; Radiofrequency integrated circuits; Balun; GaInP/GaAs heterojunction bipolar transistor (HBT); Gilbert mixer; LC current combiner; current mirror; lumped circuit; rat-race hybrid;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2005.856844
