Low Phase Noise Feedback Oscillators Utilizing High-Q SIW Filter with Dielectric Loading

Hao Zhang; Wei Kang; Wen Wu

doi:10.1515/freq-2018-0070

Article

Low Phase Noise Feedback Oscillators Utilizing High-Q SIW Filter with Dielectric Loading

Hao Zhang , Wei Kang and Wen Wu

Published/Copyright: July 12, 2018

Published by

Become an author with De Gruyter Brill

Author Information

From the journal Frequenz Volume 73 Issue 1-2

Abstract

High-Q substrate integrated waveguide (SIW) resonator and its application to low phase noise oscillators are focused in this paper. By drilling air holes in the substrate, SIW bandpass filters (BPFs) with high Q factor could be achieved. This SIW filter is embedded into the feedback loop to be treated as a frequency stabilization element in designing the oscillator. The complex quality factor (Q_sc)-peak frequency of the filter is chosen as the final oscillation frequency to obtain low phase noise performance. Moreover, air boxes are utilized instead of the air holes in the substrate to design another oscillator with lower phase noise performance and good harmonic suppression. Two low phase noise oscillators based on fourth-order SIW BPFs with dielectric loading have been studied, demonstrated and fabricated to verify the design concept.

Keywords: dielectric loading; quality factor; low phase noise oscillator; SIW BPF

References

[1] J. Papapolymerou, J. C. Cheng, J. East, and L. P. B. Katehi, “A micromachined high-Q X-band resonator,” IEEE Microw. Guided Wave Lett., vol. 7, no. 6, pp. 168–170, Jun. 1997.10.1109/75.585207Search in Google Scholar

[2] C. T. M. Wu, T. Itoh, A. K. Poddar, and U. L. Rohde, “Active complementary coupled resonator for low phase noise X-band oscillator,” Eur. Freq. Time Forum., pp. 356–359, 2014.10.1109/EFTF.2014.7331509Search in Google Scholar

[3] Z. Q. Yang, B. Y. Luo, J. Dong, and T. Yang, “X-band low-phase noise oscillator employing substrate integrated waveguide dual-mode filter,” Electron. Lett., vol. 51, no. 6, pp. 495–496, Mar. 2015.10.1049/el.2014.4106Search in Google Scholar

[4] C. H. Tseng and C. L. Chang, “Design of low phase-noise microwave oscillator and wideband VCO based on microstrip combline bandpass filters,” IEEE Trans. Microw. Theory Tech., vol. 60, no. 10, pp. 3151–3160, 2012.10.1109/TMTT.2012.2210441Search in Google Scholar

[5] F. Grine, T. Djerafi, M. T. Benhabiles, K. Wu, and M. L. Riabi, “High-Q substrate integrated waveguide resonator filter with dielectric loading,” IEEE Access, vol. 5, no. 2, pp. 12526–12532, Jul. 2017.10.1109/ACCESS.2017.2711958Search in Google Scholar

[6] K. Wu, “Slow wave structures,” in Wiley’s Encyclopedia of Electrical and Electronics Engineering (On the Microwave Theory and Techniques), vol. 19, J. G. Webster, Ed. Hoboken, NJ, USA: Wiley, 1999, pp. 366–381.10.1002/047134608X.W4952Search in Google Scholar

[7] G. Andrei, RF and Microwave Transistor Oscillator Design. beijing: L.Q. Xu, 2009, pp. 21–25.Search in Google Scholar

[8] Y. Cassivi and K. Wu, “Substrate integrated circuits concept applied to the nonradiative dielectric guide,” IEE Proc.-Microw. Antennas Propag., vol. 152, no. 6, pp. 424–433, Dec. 2005.10.1049/ip-map:20045089Search in Google Scholar

Received: 2018-03-13

Published Online: 2018-07-12

Published in Print: 2019-01-28

You are currently not able to access this content.

Articles in the same Issue

https://doi.org/10.1515/freq-2018-0070

Keywords for this article

dielectric loading; quality factor; low phase noise oscillator; SIW BPF