상세정보
학술지
A Compact Doherty Power Amplifier for Massive Multi-input Multi-output Applications
- 발행일
- 201901
- 출처
- Microwave and Optical Technology Letters, v.61 no.1, pp.28-30
- ISSN
- 0895-2477
- 출판사
- John Wiley & Sons
- 초록
- A Doherty power amplifier composed of GaAs IPDs (Lange coupler and Doherty combiner) and GaN MMICs (carrier amplifier and peaking amplifier) is presented for 5G massive multi-input multi-output (MIMO). No input phase compensation circuit and no output offset lines were used for a compact design and the assembled Doherty power amplifier is as small as 6.6 mm × 3.6 mm with a saturation output power of 46 dBm. The asymmetric Doherty power amplifier exhibits a gain greater than 27.8 dB, PAE greater than 39.8% at average output power of 38 dBm, and ACLR less than ?닋27.7 dBc using a 20 MHz LTE signal with 7.5 dB PAR across 3.6-3.8 GHz.
- KSP 제안 키워드
- 38 GHz, Compact design, Compensation circuit, Doherty power amplifier(DPA), Lange coupler, Multi-input, Multi-output, Multiple input multiple output(MIMO), Output power, peaking amplifier, phase compensation