Improvement of Phase Noise Characteristics for Tuning Voltage in Voltage Controlled Oscillator using Coupled Microstrip Lines 


Vol. 35,  No. 5, pp. 513-518, May  2010


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  Abstract

Improvement of phase noise characteristics in a different approach of HEMT VCO (Voltage Controlled Oscillator) with coupled microstrip lines to tune the oscillating frequency is investigated. Two HEMT VCOs of 9.8㎓ are manufactured in the same configuration except for the frequency tuning circuit in order to empirically demonstrate the phase noise reduction. Experimental result shows that phase noise reduction can be enhanced 8dBc/㎐ at 100㎑ offset frequency from carrier by frequency tuning circuit with coupled microstrip lines over the conventional VCO.

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  Cite this article

[IEEE Style]

K. Ryu, D. Shin, I. Yom, S. Kim, "Improvement of Phase Noise Characteristics for Tuning Voltage in Voltage Controlled Oscillator using Coupled Microstrip Lines," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 5, pp. 513-518, 2010. DOI: .

[ACM Style]

Keun-Kwan Ryu, Dong-Hwan Shin, In-Bok Yom, and Sung-Chan Kim. 2010. Improvement of Phase Noise Characteristics for Tuning Voltage in Voltage Controlled Oscillator using Coupled Microstrip Lines. The Journal of Korean Institute of Communications and Information Sciences, 35, 5, (2010), 513-518. DOI: .

[KICS Style]

Keun-Kwan Ryu, Dong-Hwan Shin, In-Bok Yom, Sung-Chan Kim, "Improvement of Phase Noise Characteristics for Tuning Voltage in Voltage Controlled Oscillator using Coupled Microstrip Lines," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 5, pp. 513-518, 5. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880