Novel allpass filter configuration employing single OTRA

被引：71

作者：

Cakir, C ^{[1
]}

Cam, U

Cicekoglu, O

机构：

[1] Bogazici Univ, Dept Elect & Elect Engn, TR-34342 Istanbul, Turkey

[2] Fac Engn, Dept Elect & Elect Engn, TR-35160 Izmir, Turkey

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2005年 / 52卷 / 03期

关键词：

allpass filters; analog integrated circuits; operational transresistance amplifiers (OTRAs);

D O I：

10.1109/TCSII.2004.842055

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 new circuit configuration uses a single operational transresistance amplifier (OTRA) and four passive elements to realize both first- and second-order allpass filters. Owing to internal grounding of the OTRA input terminals, effects of input parasitics are significantly reduced. Applications of the circuit include the realization of the phase equalizer, the quadrature oscillator, and the high-Q bandpass filter for analog signal processing. The performance of the allpass filter is illustrated by circuit-level simulation of a quadrature oscillator with CMOS realization of the OTRA.

引用

页码：122 / 125

页数：4