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학술지 A Compact Doherty Power Amplifier for Massive Multi-input Multi-output Applications
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저자
노윤섭, 신천식
발행일
201901
출처
Microwave and Optical Technology Letters, v.61 no.1, pp.28-30
ISSN
0895-2477
출판사
John Wiley & Sons
DOI
https://dx.doi.org/10.1002/mop.31514
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.
키워드
5G, GaAs, GaN, massive MIMO, power amplifier
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, massive mimo, peaking amplifier