A Study of Meandered Microstrip Coupler with Dielectric Cover

Article Preview

Abstract:

A novel design technique to improve the directivity of a microstrip direction coupler by a meandered structure with dielectric cover is proposed in this paper. Increasing of even-mode phase velocity by the proposed meandering method structure with dielectric cover is reported for the first time. An analytical method to obtain closed-form equations of even-mode, phase velocity is developed. The proposed structure is verified by experiments.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

215-218

Citation:

Online since:

December 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] S. L. March, Phase velocity compensation in parallel coupled microstrip, IEEE M I T - s Dig., pp.410-412, (1982).

Google Scholar

[2] D. D. Paolino, MIC overlay coupler design using spectral domain techniques, IEEE Trans. on Microwave Theory and Tech. vol. 26, pp.646-649, Sept. (1978).

DOI: 10.1109/tmtt.1978.1129456

Google Scholar

[3] J. L. Klein, and K. Chang, Optimum dielectric overlay thickness for equal even- and odd-mode phase velocities in coupled microstrip circuits, Ekcrronic Lerrers, vol. 26, pp.274-276, Sept. (1990).

DOI: 10.1049/el:19900182

Google Scholar

[4] L. Su, T. Itoh, and J. Rivera, Design of an overlay directional couple by a full-cave analysis, IEEE Trans. On Microwave Theory and Tech., vol. 31, pp.1017-1022, Dec. (1983).

DOI: 10.1109/tmtt.1983.1131655

Google Scholar

[5] A. Podell, A high-directivity microstrip coupler technique, IEEE m - s Dig., pp.33-36, (1970).

Google Scholar

[6] S. Uysal, and H. Aghvami, Synthesis, design and construction of ultra-wideband nonuniform directionalcouplers in inhomogeneous media, IEEE Trans. On Microwave Theory and Tech., vol. 37, pp.969-976. June1989.

DOI: 10.1109/22.25398

Google Scholar

[7] G. Schaller, Optimum of microstrip directional couplers with lumped capacitors, AEU, vol. 31, pp.301-307, Jul. Aug. (1977).

Google Scholar

[8] D. Kajfez, Raise coupler directivity with lumped compensation, Microwaves, vol. 27, pp.64-70, Mar. (1978).

Google Scholar

[9] M. Dydyk, 'Microstrip directional couplers with ideal performance via single-element compensation, IEEE Trans. on Microwave Theory and Tech., vol. 47, no. 6, pp.956-964, June (1999).

DOI: 10.1109/22.769332

Google Scholar

[10] V. A. Monaco, and P. Tiberio, Computer-aided analysis of microwave circuits, IEEE Trans. on Microwave Theory and Tech., vol. 22, pp.249-263, Mar. (1974).

DOI: 10.1109/tmtt.1974.1128208

Google Scholar

[11] B. M. Schiffman, A new class of broadband microwave 90" phase shifter, IRE Trans. on Microwave Theory and Tech., vol. 6, pp.232-237, Apr. (1958).

DOI: 10.1109/tmtt.1958.1124543

Google Scholar