A wideband CMOS VCO for zero-IF GSM-CDMA single-chip transceiver

被引：1
|
作者：
Manetakis, K [1 ]
Jessie, D [1 ]
Narathong, C [1 ]
机构：
[1] Qualcomm CDMA Technol, San Diego, CA 92121 USA
来源：
ESSCIRC 2004: PROCEEDINGS OF THE 30TH EUROPEAN SOLID-STATE CIRCUITS CONFERENCE | 2004年
关键词：
D O I：
10.1109/ESSCIR.2004.1356637
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A low-power CMOS VCO in a 0.35um process achieves tuning range 2.47GHz - 3.47GHz and phase noise performance -145dBc/Hz at 3MHz offset (from 1.8GHz carrier). 5-bit digital coarse-tuning and accumulation-type MOS varactors allow for 33% tuning range, which is required to cover the LO frequency range of a zero-IF GSM-CDMA transceiver and to account for process and temperature variations. Optimum design techniques ensure low VCO gain (<104MHz/V) for good interoperability with the frequency synthesizer. An integrated regulator provides low supply pushing (40KHz/V) and reduces AM-to-PM sensitivity from the supply.
引用
收藏
页码：139 / 142
页数：4
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