Miniaturized balanced low noise amplifier for TD-SCDMA application

Author

Chen Sun ; Tao Su ; Qingqing Zhang ; Rongrong Chen

Author_Institution

Nat. key Lab. of Sci. & Technol. on Antennas & Microwaves, Xidian Univ., Xi´an, China

fYear

2014

fDate

26-29 July 2014

Firstpage

1179

Lastpage

1182

Abstract

A miniaturized balanced low noise amplifier for TD-SCDMA application is presented in this paper. Using the PHEMT devices, the proposed low noise amplifier with miniaturized quadrature hybrid coupler is designed in terms of stability and matched characteristics. Simulated by AWR MWO software, the amplifier is fabricated on a PTFE board. The compact quadrature hybrid coupler reduces the size of the circuit greatly. Over the operating frequency band (1.85-1.95 GHz), the measured results demonstrate an excellent performance with a low noise figure of less than 0.9 dB, gain of higher than 31 dB, inband flatness of less than 1 dB, S11 of less than -15 dB, and S22 of less than -13dB.

Keywords

HEMT integrated circuits; UHF amplifiers; UHF couplers; UHF integrated circuits; code division multiple access; low noise amplifiers; AWR MWO software; PHEMT devices; PTFE board; TD-SCDMA; frequency 1.85 GHz to 1.95 GHz; low noise amplifier; quadrature hybrid coupler; Circuit stability; Couplers; Gain; Low-noise amplifiers; Noise figure; Power transmission lines; Stability analysis; Balanced Amplifier; Low Noise Amplifier; Miniaturization; Quadrature Hybrid Coupler;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (APCAP), 2014 3rd Asia-Pacific Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4799-4355-5

Type

conf

DOI

10.1109/APCAP.2014.6992724

Filename

6992724