On the DC Power Budget and RF Performance Study of a Linearized 1 Watt Medium RF Power Amplifier for Enterprise Wireless BS Applications

2018 ◽  
Author(s):  
Saroj K Patro ◽  
Ajit K Panda ◽  
Rabindra K Mishra
Keyword(s):  
Power Amplifier ◽  
Rf Power ◽  
Performance Study ◽  
Power Budget ◽  
Rf Power Amplifier ◽  
Dc Power ◽  
Rf Performance

scholarly journals Software-Based Adaptive Protection Control Against Load Mismatch for a Mobile Power Amplifier Module

Electronics ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 1226
Author(s):  
Jeon ◽  
Jung ◽  
Kang
Keyword(s):  
Power Amplifier ◽  
Rf Power ◽  
Load Impedance ◽  
Rf Power Amplifier ◽  
Protection Method ◽  
Measurement Results ◽  
Digitally Controlled ◽  
Nominal Condition ◽  
Rf Performance ◽  
Mismatch Condition

A closed-loop protection method for a radio frequency (RF) power amplifier (PA) module applicable to mobile handsets has been introduced. The load impedance of the PA was adaptively sensed by an embedded impedance detector which was digitally controlled and the system adjusted PA power using a feedback circuit to keep the PA safe based on a load mismatch detection. For verification, a two-stage hetero junction bipolar transistor (HBT) PA module for handsets was fabricated and tested against load mismatch. Measurement results showed that the technique could help PA survive at a 0.5V larger collector bias voltage condition than when the technique was not applied for the same mismatch condition with an acceptable RF performance degradation at nominal condition.

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