A 5GHz transformer-coupled CMOS VCO using bias-level shifting technique

Taeksang Song, Sangsoo Ko, Dae Hyung Cho, Han Su Oh, Chulho Chung, Euisik Yoon

Research output: Contribution to conferencePaper

22 Citations (Scopus)

Abstract

In this paper we report a low phase noise transformer-coupied CMOS VCO using bias-level shifting technique. Two fully integrated voltage-controlled oscillators (VCOs) are presented as a proof of concept. A conventional LC VCO with a current source achieves a phase noise of 116.67 dBc/Hz at 1 MHz offset from 5.6 GHz center frequency, taking 3.9 mA from 1.5 V power supply. The proposed transformer-coupled VCO achieves a phase noise of -124.17 dBe/Hz at 1 MHz offset from a 5.8 GHz carrier frequency with 5.1 mA bias current from 1.5 V power supply. The VCO performances are compared with the previously reported CMOS VCOs in the range of 4-6 GHz oscillation frequencies.

Original languageEnglish
Pages127-130
Number of pages4
Publication statusPublished - 2004 Sep 21
EventDigest of Papers - 2004 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium - Fort Worth, TX, United States
Duration: 2004 Jun 62004 Jun 8

Other

OtherDigest of Papers - 2004 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium
CountryUnited States
CityFort Worth, TX
Period04/6/604/6/8

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Variable frequency oscillators
Phase noise
Bias currents

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Song, T., Ko, S., Cho, D. H., Oh, H. S., Chung, C., & Yoon, E. (2004). A 5GHz transformer-coupled CMOS VCO using bias-level shifting technique. 127-130. Paper presented at Digest of Papers - 2004 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, Fort Worth, TX, United States.
Song, Taeksang ; Ko, Sangsoo ; Cho, Dae Hyung ; Oh, Han Su ; Chung, Chulho ; Yoon, Euisik. / A 5GHz transformer-coupled CMOS VCO using bias-level shifting technique. Paper presented at Digest of Papers - 2004 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, Fort Worth, TX, United States.4 p.
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abstract = "In this paper we report a low phase noise transformer-coupied CMOS VCO using bias-level shifting technique. Two fully integrated voltage-controlled oscillators (VCOs) are presented as a proof of concept. A conventional LC VCO with a current source achieves a phase noise of 116.67 dBc/Hz at 1 MHz offset from 5.6 GHz center frequency, taking 3.9 mA from 1.5 V power supply. The proposed transformer-coupled VCO achieves a phase noise of -124.17 dBe/Hz at 1 MHz offset from a 5.8 GHz carrier frequency with 5.1 mA bias current from 1.5 V power supply. The VCO performances are compared with the previously reported CMOS VCOs in the range of 4-6 GHz oscillation frequencies.",
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Song, T, Ko, S, Cho, DH, Oh, HS, Chung, C & Yoon, E 2004, 'A 5GHz transformer-coupled CMOS VCO using bias-level shifting technique', Paper presented at Digest of Papers - 2004 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, Fort Worth, TX, United States, 04/6/6 - 04/6/8 pp. 127-130.

A 5GHz transformer-coupled CMOS VCO using bias-level shifting technique. / Song, Taeksang; Ko, Sangsoo; Cho, Dae Hyung; Oh, Han Su; Chung, Chulho; Yoon, Euisik.

2004. 127-130 Paper presented at Digest of Papers - 2004 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, Fort Worth, TX, United States.

Research output: Contribution to conferencePaper

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Song T, Ko S, Cho DH, Oh HS, Chung C, Yoon E. A 5GHz transformer-coupled CMOS VCO using bias-level shifting technique. 2004. Paper presented at Digest of Papers - 2004 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, Fort Worth, TX, United States.