Title :
A 9.5–18.5 GHz power amplifier for multi-band microwave point-to-point backhaul communication
Author :
Kefeng Han ; Xun Luo
Author_Institution :
Huawei Technol. Co., Ltd., Shenzhen, China
Abstract :
A 9.5-18.5 GHz differential power amplifier (PA) with high linearity and low noise is proposed for multiband microwave point-to-point (P2P) backhaul communication. Based on the emitter-degenerated hybrid cascode structure, input matching bandwidth is maximized without tuning. A high-fT NPNs (BVCEO=1.8V) with high breakdown (HB) NPNs hybrid cascode is utilized with a supply of 4.5V. A tunable broadside-coupled transformer with 2-bit switch-capacitor array is introduced to cover a wideband frequency range to meet the multi-band P2P standard. Then, the proposed PA is verified in IBM 8HP SiGe BiCMOS process. The PA shows the following measurements with merits: maximum gain of 8.6 dB (i.e., one-stage), OIP3 more than 29.3 dBm, noise figure less than 6 dB, and OP1dB greater than 19 dBm, total current of 98mA.
Keywords :
BiCMOS analogue integrated circuits; Ge-Si alloys; MMIC power amplifiers; differential amplifiers; switched capacitor networks; transformers; IBM 8HP BiCMOS process; NPN; P2P backhaul communication; PA; SiGe; current 98 mA; differential power amplifier; emitter-degenerated hybrid cascode structure; frequency 9.5 GHz to 18.5 GHz; gain 8.6 dB; input matching bandwidth; multiband P2P standard; multiband microwave point-to-point backhaul communication; switch-capacitor array; tunable broadside-coupled transformer; voltage 1.8 V; voltage 4.5 V; word length 2 bit; Impedance matching; Linearity; Microwave amplifiers; Power amplifiers; Silicon germanium; Switches; Wideband; Point-to-point (P2P); power Amplifier (PA); tunable transformer;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2014 IEEE
Conference_Location :
Tampa, FL
Print_ISBN :
978-1-4799-3862-9
DOI :
10.1109/RFIC.2014.6851736
