LC-Tank Colpitts Injection-Locked Frequency Divider With Even and Odd Modulo

被引：21

作者：

Jang, Sheng-Lyang ^{[1
]}

Luo, Jhong-Chen ^{[1
]}

Chang, Chia-Wei ^{[1
]}

Lee, Chien-Feng ^{[1
]}

Huang, Jhin-Fang ^{[1
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2009年 / 19卷 / 02期

关键词：

LC-tank injection-locked frequency divider; colpitts VCO; locking range; CMOS;

D O I：

10.1109/LMWC.2008.2011338

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 injection-locked frequency divider (ILFD) using a standard 0.18 mu m, CMOS process is presented. The ILFD is based on a differential Colpitts voltage controlled oscillator (VCO) with a direct injection MOSFET for coupling an external signal to the resonators. The VCO is composed of two single-ended VCOs coupled with two transformers. Measurement results show that at the supply voltage of 1.4 V the divider's free-running frequency is tunable from 4.77 to 5.08 GHz, and the proposed circuit can function as a first harmonic injection-locked oscillator, divide-by-2, -3, and -4 frequency divider. At the incident power of 0 dBm the divide-by-2 operation range is front the incident frequency 7.7 to 11.5 GHz and the divide-by-4 operation range is from the incident frequency 18.9 to 20.2 GHz.

引用

页码：113 / 115

页数：3

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