Title: Temperature Insensitive PA Bias Circuit With Digital Control Interface Using InGaP/GaAs HBT Technology
Authors: Chang, Wei-Ling
Meng, Chinchun
Wong, Shyh-Chyi
Chien, Hwey
Huang, Guo-Wei
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
Keywords: InGaP/GaAs HBT;temperature insensitive;power amplifier;Wilson current mirror
Issue Date: 2015
Abstract: This paper demonstrates a new temperature insensitive bias circuit using a Wilson current mirror for the InGaP/GaAs HBT power amplifier. The Wilson current mirror has a high impedance node for connecting an on/off digital interface and a stable voltage node for injection of feedback signals to achieve a temperature insensitive bias. The fabricated output stage of the power amplifier with the feedback through the Wilson current source shows a stable bias current with current variation from 186 mA to 182 mA for the temperature range from 25 degrees C to 200 degrees C. A bias circuit without the feedback through the Wilson current source is also fabricated for comparison and shows a strong bias current variation over temperature.
URI: http://hdl.handle.net/11536/135435
ISBN: 978-2-8748-7039-2
ISSN: 2325-0305
Journal: 2015 45TH EUROPEAN MICROWAVE CONFERENCE (EUMC)
Begin Page: 1283
End Page: 1286
Appears in Collections:Conferences Paper