A Wideband CMOS Power Amplifier with Integrated Digital Linearizer and Tunable Transformer
- Resource Type
- Conference
- Authors
- Mariappan, Selvakumar; Rajendran, Jagadheswaran; Kumar, Narendra; Grebennikov, Andrei; Nathan, Arokia; Yarman, Binboga S.
- Source
- 2021 IEEE Asia Pacific Conference on Circuit and Systems (APCCAS) Circuit and Systems (APCCAS), 2021 IEEE Asia Pacific Conference on. :145-148 Nov, 2021
- Subject
- Bioengineering
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
General Topics for Engineers
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Frequency modulation
Impedance matching
Conferences
Power amplifiers
Transformers
Wideband
Power generation
power amplifier
CMOS
pre-distortion
digital linearizer
tunable transformer
wideband
- Language
This paper presents a fully integrated wideband CMOS power amplifier (PA) with Digitally Assisted Wideband Pre-Distorter (DAWPD) and tunable transformer. The DAWPD is implemented at the driver amplifier to establish a pre-distorter linearizing mechanism across a wide frequency bandwidth. The DAWPD mechanism has an integrated Digital Linearizer (DL), which is controlled via digital bits. The DAWPD-PA also integrated with a tunable transformer employed at its output matching network to achieve an optimum efficiency and output power performance across a wideband frequency. The DAWPD-PA is fabricated in CMOS 130 nm process and has an operating bandwidth of 1 GHz from 1.7 to 2.7 GHz. The DAWPD-PA delivers a maximum output power of 27 to 28 dBm with peak PAE of 38.8 to 41.3%. The gain achieved is 26.9 to 29.7 dB across the frequency. The DAWPD-PA is further tested with a 20 MHz LTE modulated signal and the linear output power and PAE achieved across the operating frequency are 24.0 to 25.1 dBm and 34.5 to 38.8%.