10 Bit 2/5GHz dual band digitally-controlled LC-oscillator in 0.18 um CMOS process

Ramesh K. Pokharel; Kenta Uchida; Abishek Tomar; Haruichi Kanaya; Keiji Yoshida

doi:10.1109/APMC.2009.5385438

10 Bit 2/5GHz dual band digitally-controlled LC-oscillator in 0.18 um CMOS process

Ramesh K. Pokharel, Kenta Uchida, Abishek Tomar, Haruichi Kanaya, Keiji Yoshida

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper presents a design methodology and verification of a 2/5 GHz dual band digitally-controlled oscillator (DCO). The presented DCO employed two spiral inductors and a switching transistor between them to operate at two bands of frequency. The switch is controlled by a digital signal so that shifting from one band of frequency to another to control the operation of spiral inductors needs no analog voltage signal. The proposed circuit is implemented in 0.18 um CMOS technology and tested. The measured phase noise was -120.5 dBc/Hz and - 113.9 dBc/Hz (both @ 1 MHz offset) at carrier frequency of 2.7 GHz and 4.1 GHz, respectively.

Original language	English
Title of host publication	APMC 2009 - Asia Pacific Microwave Conference 2009
Pages	2284-2287
Number of pages	4
DOIs	https://doi.org/10.1109/APMC.2009.5385438
Publication status	Published - Dec 1 2009
Event	Asia Pacific Microwave Conference 2009, APMC 2009 - Singapore, Singapore Duration: Dec 7 2009 → Dec 10 2009

Publication series

Name	APMC 2009 - Asia Pacific Microwave Conference 2009

Other

Other	Asia Pacific Microwave Conference 2009, APMC 2009
Country/Territory	Singapore
City	Singapore
Period	12/7/09 → 12/10/09

All Science Journal Classification (ASJC) codes

Hardware and Architecture
Electrical and Electronic Engineering

Access to Document

10.1109/APMC.2009.5385438

Cite this

Pokharel, RK, Uchida, K, Tomar, A, Kanaya, H & Yoshida, K 2009, 10 Bit 2/5GHz dual band digitally-controlled LC-oscillator in 0.18 um CMOS process. in APMC 2009 - Asia Pacific Microwave Conference 2009., 5385438, APMC 2009 - Asia Pacific Microwave Conference 2009, pp. 2284-2287, Asia Pacific Microwave Conference 2009, APMC 2009, Singapore, Singapore, 12/7/09. https://doi.org/10.1109/APMC.2009.5385438

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abstract = "This paper presents a design methodology and verification of a 2/5 GHz dual band digitally-controlled oscillator (DCO). The presented DCO employed two spiral inductors and a switching transistor between them to operate at two bands of frequency. The switch is controlled by a digital signal so that shifting from one band of frequency to another to control the operation of spiral inductors needs no analog voltage signal. The proposed circuit is implemented in 0.18 um CMOS technology and tested. The measured phase noise was -120.5 dBc/Hz and - 113.9 dBc/Hz (both @ 1 MHz offset) at carrier frequency of 2.7 GHz and 4.1 GHz, respectively.",

author = "Pokharel, {Ramesh K.} and Kenta Uchida and Abishek Tomar and Haruichi Kanaya and Keiji Yoshida",

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doi = "10.1109/APMC.2009.5385438",

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AU - Pokharel, Ramesh K.

AU - Uchida, Kenta

AU - Tomar, Abishek

AU - Kanaya, Haruichi

AU - Yoshida, Keiji

PY - 2009/12/1

Y1 - 2009/12/1

N2 - This paper presents a design methodology and verification of a 2/5 GHz dual band digitally-controlled oscillator (DCO). The presented DCO employed two spiral inductors and a switching transistor between them to operate at two bands of frequency. The switch is controlled by a digital signal so that shifting from one band of frequency to another to control the operation of spiral inductors needs no analog voltage signal. The proposed circuit is implemented in 0.18 um CMOS technology and tested. The measured phase noise was -120.5 dBc/Hz and - 113.9 dBc/Hz (both @ 1 MHz offset) at carrier frequency of 2.7 GHz and 4.1 GHz, respectively.

AB - This paper presents a design methodology and verification of a 2/5 GHz dual band digitally-controlled oscillator (DCO). The presented DCO employed two spiral inductors and a switching transistor between them to operate at two bands of frequency. The switch is controlled by a digital signal so that shifting from one band of frequency to another to control the operation of spiral inductors needs no analog voltage signal. The proposed circuit is implemented in 0.18 um CMOS technology and tested. The measured phase noise was -120.5 dBc/Hz and - 113.9 dBc/Hz (both @ 1 MHz offset) at carrier frequency of 2.7 GHz and 4.1 GHz, respectively.

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10 Bit 2/5GHz dual band digitally-controlled LC-oscillator in 0.18 um CMOS process

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