DOI QR코드

DOI QR Code

A Ku-Band Hair-Pin Resonator Oscillator with a New Varactor Coupled Line Structure

개선된 바랙터 결합 선로를 이용한 Ku-Band 헤어핀 발진기 설계

  • Choi, Kwang-Seok (Department of Electronic Engineering, Sogang University) ;
  • Won, Duck-Ho (Department of Electronic Engineering, Sogang University) ;
  • Yun, Sang-Won (Department of Electronic Engineering, Sogang University)
  • Published : 2010.01.31

Abstract

In this paper, we propose a new varactor coupled line structure and design the VCO using the proposed structure. The proposed coupled line structure removes the reflected signals from the varactor diode using an added $\lambda$/4 transmission line. The frequency synthesizers are designed using the PLL technique at Ku-band. The synthesizer using the proposed coupled structure has 38 MHz frequency tuning range and -97 dBc/Hz phase noise characteristic at 100 KHz offset frequency. The measured results show improved tuning range as well as the improved phase noise characteristics compared to the conventional designs.

Keywords

Hair-pin Oscillator;Coupled Line;Varactor;Tuning Frequency;Phase Noise

References

  1. David M. Pozar, Microwave Engineering 3th Edition, Wiley, 2005.
  2. Y. D. Lee, M. H. Lee, and K. H. Lee, "Voltagecontrolled hair-pin resonator oscillator with new tuning mechanism", Electronics Letters, vol. 36, Issue 17, pp. 1470-1471, Aug. 2000. https://doi.org/10.1049/el:20001057
  3. Y. Cheng, K. Czuba, and G. Kompa, "K-band phase locked hair-pin oscillator", IEEE International Symposium, vol. 4, pp. 26-29, May 2002. https://doi.org/10.1109/ISCAS.2002.1010470