Novel AM/FM/ASK/FSK/PSK/QAM Signal Generator Based on a Digitally Programmable CDTA

被引：24

作者：

Xia, Zanming ^{[1
]}

Wang, Chunhua ^{[1
]}

Jin, Jie ^{[1
]}

Du, Sichun ^{[1
]}

Lin, Hairong ^{[1
]}

Yang, Huai ^{[1
]}

机构：

[1] Hunan Univ, Coll Informat Sci & Engn, Changsha 410082, Hunan, Peoples R China

来源：

CIRCUITS SYSTEMS AND SIGNAL PROCESSING | 2015年 / 34卷 / 05期

基金：

中国国家自然科学基金;

关键词：

CDTA; Digitally programmable; Modulation; Oscillator; CMOS; Phase noise; DIFFERENCING TRANSCONDUCTANCE AMPLIFIER; OSCILLATOR; FILTER; COMPENSATION; CCCDTAS;

D O I：

10.1007/s00034-014-9921-3

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：

In this paper, a novel 0.8V current differencing transconductance amplifier (CDTA) with programmable and tunable ability is proposed and analyzed. The digitally programmable CDTA is built around a lot of programmable current mirror arrays and three linear tunable transconductors, which contains separate analog and digital tuning feature. Moreover, a CDTA-based general sinusoidal signal generator circuit with two fixed-value capacitors and two grounded resistors is presented here. The generator circuit can be configured to perform the following signal modulation techniques: amplitude modulation, frequency modulation, amplitude shift keying, frequency shift keying, phase shift keying, and quadrature amplitude modulation. Cadence Virtuoso Analog Design Environment using GlobalFoundries' 0.18 um CMOS process is used to develop the generator circuit and verify the theory by the post-layout simulations.

引用

页码：1635 / 1653

页数：19

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