한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)
- 한국전기전자재료학회 2008년도 하계학술대회 논문집 Vol.9
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- Pages.533-534
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- 2008
Ring-VCO를 이용한 멀티밴드 GPS 수신기용 PLL 설계
A Ring VCO Based PLL for Low-Cost, Low-Power Multi-Band GPS Receiver
- Kim, Yun-Jin (Chunbuk National Univ.) ;
- So, Byeong-Seong (Chunbuk National Univ.) ;
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Ko, Jin-Ho
(PHYCHIPS, Inc.) ;
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Park, Keun-Hyung
(Chunbuk National Univ.)
- 발행 : 2008.06.19
초록
This paper presents a multi-phase ring VCO for low-cost, low-power GPS receiver. In the RF band used in GPS, L1 band is now in commercial-use and L2,L5 are predicting to be commercial-use soon. Thus Wide band PLL and Cost-effective IC solutions are required for future multi-band GPS receiver that received three types band at once. A new PLL architecture for multi-band GPS application is proposed. Ring VCO is even smaller than LC-VCO and a good alternative for low-cost solution. Proposed multi-phase ring VCO offers wide frequency range covering L1, L2, and L5 band, 20% reduction of area, 23% reduction of PLL power and can generate I/Q without extra I/Q generator.