가. Transceiver 구조설계 - Direct conversion 등 구조에 따른 집적화 문제점 연구 · 기존 구조의 분석 및 평가 :DC offset, 여러 구조간의 전력소모 분석, 새로운 EH-DCR 구조 분석 - System simulation을 통한 구조의 검증 ·부품 vendor사의 사양을 기반으로 설계된 transceiver의 선형성, :NF, 이득 검증
나. Transceiver 설계 기반 기술 개발 - Hartley, Weaver 구조 등 기존의 image rejection mixer의 문제점 분석을 통한 최적 구조 연구 ·I/Q channel의 mismatch에 의한 성능저하를 개선하는 구조 제안 ·정확한 phase shifter 회로 설계 - 회로설계 및 제작을 통한 측정 및 분석 ·핵심회로 설계 제작 및 성능 평가를 통한 RF CMOS 기반 확보 :LNA, Mixer, VCO(Dual-band), PLL
다. Transceiver 구현 알고리즘 개발 - 시스템 규격으로부터 개별 부품의 사양 도출 ·표준규격에서 시스템 규격을 도출하고 이를 개별 규격 작성 - Simulator와 S/W로서 transceiver를 설계하기 위한 핵심회로 DB화 ·ADS, Cadence, SPW, Matlab, C-language를 이용한 핵심회로 블록을 IP화
라. Transceiver 시험 제작 평가 - 범용 개별 부품을 이용한 transceiver 시험제작 및 성능 분석
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