← 返回 JSSC 论文列表JSSC 2006第2期RF & Wireless0.13μm CMOSVCOTransceiver
A 12-V RF Front-End With On-Chip VCO for PCS 1900 Direct Conversion Receiver in
本文介绍了一种用于PCS 1900直接转换接收器的1.2V RF前端设计，包含LNA、正交混频器和带增益控制的RC低通滤波器。
电压增益50 dB, 噪声系数3.9 dB, IIP3 9 dBm, IIP2 4330 dBm
RF前端直接转换接收器低噪声放大器正交混频器动态匹配
▸动态匹配技术抑制混频器开关的闪烁噪声
▸电流模式接口提升混频器线性度
▸低电压电路技术增强线性度和降低噪声
Abstract
In this paper, a 1.2-V RF front-end realized for
the personal communications services (PCS) direct conversion
receiver is presented. The RF front-end comprises a low-noise
amplifier (LNA), quadrature mixers, and active RC low-pass
filters with gain control. Quadrature local oscillator (LO) signals
are generated on chip by a double-frequency voltage-controlled
oscillator (VCO) and frequency divider. A current-mode interface
between the downconversion mixer output and analog baseband
input together