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학술지 Dual-Band Direct Conversion Receiver With Additive Mixing Architecture
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저자
문성모, 이한림
발행일
202202
출처
IEEE Access, v.10, pp.15436-15442
ISSN
2169-3536
출판사
IEEE
DOI
https://dx.doi.org/10.1109/ACCESS.2022.3149346
협약과제
22HH4500, [전문연구실] 위성탑재체 핵심원천기술 개발 [통합과제] , 장동필
초록
A dual-band direct conversion receiver based on additive mixing architecture for low-cost and multi-mode wireless communication systems is proposed. The proposed receiver consists of two active four-port junctions for additive mixing and one-stage dual-band polyphase filter for quadrature LO signal generation. Each four-port junction is fabricated with 0.18μ m CMOS technology and configured by an active balun, two buffer amplifiers, two active combiners and two power detectors. The proposed polyphase filter is implemented using type-I architecture adopting one-stage and R-LC resonance type for low power and dual-band operation. The phase and amplitude calibration schemes are also integrated to effectively correct I/Q mismatch within the proposed architecture. The calibration ranges for the phase and amplitude mismatches show 8째 and 14 dB, respectively. The validity of the proposed receiver based on additive mixing method is successfully demonstrated by demodulating 16-QAM signals with 40 Mbps at the dual band of 900 MHz and 2.4 GHz.
KSP 제안 키워드
16 quadrature amplitude modulation(16QAM), 2.4 GHz, Active Balun, CMOS Technology, Direct conversion receiver, Dual-band operation, IQ mismatch, LC resonance, Low-Power, Low-cost, Multi-mode
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