https://scholars.lib.ntu.edu.tw/handle/123456789/147604
Title: | A Low-Phase-Noise K-Band CMOS VCO | Authors: | Hsieh, Hsieh-Hung Lu, Liang-Hung |
Keywords: | Capacitive feedback;CMOS radio frequency (RF);differential colpitts oscillators;K-band;LC-tank;low phase noise;voltage-controlled oscillators (VCOs) | Issue Date: | Oct-2006 | Publisher: | Taipei:National Taiwan University Dept Elect Engn | Journal Volume: | VOL. 16 | Journal Issue: | NO. 10 | Start page/Pages: | - | Source: | IEEE Microwave and Guided Wave Letters | Abstract: | A novel circuit topology for low-phase-noise voltage controlled oscillators (VCOs) is presented in this letter. By employing a PMOS cross-coupled pair with a capacitive feedback, superior circuit performance can be achieved especially at higher frequencies. Based on the proposed architecture, a prototype VCO implemented in a 0.18- m CMOS process is demonstrated for K-band applications. From the measurement results, the VCO exhibits a 510-MHz frequency tuning range at 20 GHz. The output power and the phase noise at 1-MHz offset are 3 dBm and 111 dBc/Hz, respectively. The fabricated circuit consumes a dc power of 32 mW from a 1.8-V supply voltage. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/200611150121768 | Other Identifiers: | 246246/200611150121768 |
Appears in Collections: | 電機工程學系 |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.