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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2010-07-29
Leaky-Wave Regimes on MEMS-Loaded Transmission Lines for mm -Wave Applications
By
Tomas Zvolensky,

    Mr. Tomas Zvolensky

    Department of Radio Science and Engineering

    Aalto University

    Finland

    Homepage

Dmitry Chicherin,

    Dr. Dmitry Chicherin

    Department of Radio Science and Engineering

    Aalto University

    Finland

    Homepage

Antti V. Räisänen,

    Prof. Antti V. Räisänen

    TKK Helsinki University of Technology

    Finland

    Homepage

Constantin R. Simovski

    Dr. Constantin R. Simovski

    Department of Radio Science and Engineering/SMARAD

    TKK Helsinki University of Technology

    Finland

    Homepage

Progress In Electromagnetics Research M, Vol. 13, 157-171, 2010
doi:10.2528/PIERM10050605 | Google Scholar

Abstract
This paper presents study of controllable leaky wave modes in various planar transmission lines operating at millimetre wavelengths. Leaky wave regime is achieved by exploitation of periodic inclusions. The main goal is to obtain the scanning of the radiation angle from forward to backward direction and rather broad range of scanning angles at a given operation frequency corresponding to the mm-wave range. For this purpose we suggest to use MEMS capacitors combined with shunt strap inductors, probably grounded. This design solution allows one to significantly reduce the losses in the loaded line compared to known scanning leaky-wave antennas based on varactors or on magnetized ferrites. The design of the unit cell is done using global optimization method, and the dispersion is investigated analytically. After analytical modeling and optimization, full wave analysis is done using Ansoft HFSS v.11 environment. After the leaky wave regimes are verified, an example of a leaky-wave antenna is introduced in order to confirm possibility of beam scanning.
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Citation
Tomas Zvolensky, Dmitry Chicherin, Antti V. Räisänen, and Constantin R. Simovski, "Leaky-Wave Regimes on MEMS-Loaded Transmission Lines for mm -Wave Applications," Progress In Electromagnetics Research M, Vol. 13, 157-171, 2010.
doi:10.2528/PIERM10050605
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