A CMOS harmonic rejection mixer based on current mirror amplifiers

被引：0
|
作者：
Cha, Minyeon [1 ]
Kwon, Ickjin [1 ]
机构：
[1] Ajou Univ, Coll Informat Technol, Div Elect & Comp Engn, Suwon 443749, South Korea
来源：
IEICE ELECTRONICS EXPRESS | 2011年 / 8卷 / 16期
基金：
新加坡国家研究基金会;
关键词：
CMOS digital TV (DTV) tuner; advanced television systems committee (ATSC); direct conversion; harmonic rejection mixer (HRM); current mirror; INTERMODULATION; RECEIVER;
D O I：
10.1587/elex.8.1287
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 harmonic rejection mixer (HRM) with current mirror amplifier for digital TV tuner applications is proposed. In the proposed HRM, gain ratio can be set accurately using the current mirror amplifier to achieve high harmonic rejection ratio without mismatch calibration circuits. Owing to a folded switching stage, a harmonic rejection ratio of the HRM is also immune to a supply voltage variation and the HRM can be designed at a lower supply voltage compared to a conventional HRM. A third and fifth-order harmonic rejection ratio of the proposed HRM are 52.6 and 50.8 dB. The harmonic rejection mixer consumes 11.5 mA from 1.5 V supply voltage.
引用
收藏
页码：1287 / 1293
页数：7
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