A Wideband Coaxial-to-Ridge waveguide Adaptor

Kun Chen, Zhigang Wang, Dahai Ni, Hongbo Yin

Abstract


A Coaxial-to-ridge waveguide adaptor covering the entire K and Ka band has been demonstrated in this article. The adaptor
is in the form of asymmetric double ridge waveguides and characteristic impedances of each step is determined by Chebyshev polynomial.
A new method of calculating the characteristic impedance of the asymmetric double ridge waveguide is presented and the wideband adaptor
is designed on this basis. The simulated results for the proposed adaptor in HFSS show that the return loss is better than 17.8dB in the entire
K and Ka band and the insertion loss is better than 0.1dB. The simulated results for the back-to-back confi guration show that return loss is
better than 15 dB and insertion loss is better than 0.2dB. To demonstrate its performance, the adaptor is fabricated and then measured on the
vector network analyser. The measured results show that the average insertion loss of the adaptor is about 1dB in the whole band.

Keywords


coaxial ridge waveguide adapter; Overlapping transformer steps; Chebyshev polynomial

Full Text:

PDF

Included Database


References


[1] A. Niknejad and H. Hashemi. Mm-Wave Silicon Technology 60 GHz and Beyond [M]. New York, NY, USA: Springer, 2008.

[2]Nathan Jastram,Al-Tarifi , Ljubodrag Boskovic and Dejan S Filipovic. On the Split-Block Realization of Millimeter-Wave Ridge Waveguide Components [J].

IEEE Microwave & Wireless Components Letters, vol. 28, no. 4, April 2018.

[3] M. E. Bialkowski. Analysis of a coaxial-to-waveguide adaptor incorporating a dielectric coated probe [J]. IEEE Microwave & Guided Wave Lett, vol. I,

no. 8, pp. 211-214, Aug. 1991.

[4] A. Ittipiboon and L. Shafal. Probe Mutual Impedance in a Rectangular Waveguide [J]. IEEE Transactions on Microwave Theory & Techniques, vol. MTT-

33, no. 4, April 1985.

[5]A. Anger. Software compute Maxwell’s equations [J]. Microwave J, vol. 33, no. 2, Feb. 1990.

[6] Ljubisa STANKOVIC and Svetozar JOVICEVIC. A round-ridge waveguide[J]. Ann. Telecommun 43, nos. 9-10, Oct. 1988.

[7]M. Wilkens. High-Effi ciency Broad-Ridge Waveguide Lasers [J]. IEEE Photonics Technology Letters, vol. 30, no. 6, pp. 545-548, 15 March15, 2018.

[8]Wilkens. 970-nm ridge waveguide diode laser bars for high power DWBC systems [J]. High-power Diode Laser Technology, X VI 2018.

[9]Hopfer. The design of ridge waveguides. IRE Trans. Microwave Theory Tech [J], vol. MTT-3, pp. 20-29, October 1955.

[10]N. Marcuvitz. Waveguide Handbook[M], New York: McGraw Hill.ch.5. 1951.

[11] Lewin L. A contribution to the theory of probes in waveguides [J]. proc Inst Elec Eng,1958.

[12] Collin R E. Field Theory of Guide Waves[M], New York: McGraw-Hill, 1960, Ch.7:256-271.

[13]R. E. Collin. Field Theory of Guided Waves[M], New York: McGraw-Hill, Ch. 7. Math. Appendix, 1960.

[14]M. P. Pozar. Microwave Engineering[M], New York: John Wiley & Sons, Inc, 2012, ch. 5: 250-261.




DOI: https://doi.org/10.18686/esta.v10i3.469

Refbacks

  • There are currently no refbacks.


Copyright (c) 2023 Kun Chen,Zhigang Wang,Dahai Ni,Hongbo Yin