AKa-Band Power Amplifier with Phase Compensation Technique Applied to 5G Phased Array
- Resource Type
- Authors
- Hung-Yu Lin; Wei-Tsung Li
- Source
- 2018 Asia-Pacific Microwave Conference (APMC).
- Subject
- Physics
Phased array
business.industry
Amplifier
020208 electrical & electronic engineering
Bandwidth (signal processing)
Linearity
dBc
020206 networking & telecommunications
02 engineering and technology
High-electron-mobility transistor
Linearizer
0202 electrical engineering, electronic engineering, information engineering
Insertion loss
Optoelectronics
business
- Language
A $\mathbf{K}_{a}$ -band power amplifier covering 37–40 GHz band with a low-loss built-in linearizer has been implemented through $\pmb{0.1}\pmb\mu \mathbf{m}$ GaAs pHEMT technology. The proposed phase compensation linearizer can enhance the linearity of the power amplifier with a low insertion loss, a compact die-size, and zero dc consumption. These advantages make the linearizer more suitable for 5G phased array applications. The experimental results show that the power amplifier achieves 1-dB compression point (P1dB) of 17.5 dBm and the power-added efficiency (PAE) at P1dB of 17%. When the proposed power amplifier is tested with OFDM 64-QAM 500MHz bandwidth signal, the obtained − 25 dBc error vector magnitude (EVM) compliant output power and PAE are 13.7 dBm and 7.4 %, respectively.