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 |