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An experimental investigation of high temperature superconducting microstrip antennas at K- and Ka-band frequencies

Richard, Mark Adrian
http://rave.ohiolink.edu/etdc/view?acc_num=case1056658481

Abstract Details

1993, Doctor of Philosophy, Case Western Reserve University, Electrical Engineering.
The recent discovery of high temperature superconductors (HTS) has generated a substantial amount of interest in microstrip antenna applications. However, the high permittivity of substrates compatible with HTS results in narrow bandwidths and high patch edge impedances of such antennas. To investigate the performance of superconducting microstrip antennas, three antenna architectures at K and Ka-band frequencies are examined. Super-conducting microstrip antennas that are directly coupled, gap coupled, and electromagnetically coupled to a microstrip transmission line have been designed and fabricated on lanthanum aluminate substrates using YBa2Cu3O7 super-conducting thin films. For each architecture, a single patch antenna and a four element array were fabricated. Measurements from these antennas, including input impedance, bandwidth, patterns, efficiency, and gain are presented. The measured results show useable antennas can be constructed using any of the architectures. All architectures show excellent gain characteristics, with less than 2 dB of total loss in the four element arrays. Although the direct and gap coupled antennas are the simplest antennas to design and fabricate, they suffer from narrow bandwidths. The electromagnetically coupled antenna, on the ot her hand, allows the flexibility of using a low permittivity substrate for the patch radiator while using HTS for the feed network, thus increasing the bandwidth while effectively utilizing the low loss properties of HTS. Each antenna investigated in this research is the first of its kind reported.
Paul Claspy (Advisor)
244 p.
experimental investigation high temperature superconducting microstrip antennas K- and Ka-band frequencies

Recommended Citations

Citations

  • Richard, M. A. (1993). An experimental investigation of high temperature superconducting microstrip antennas at K- and Ka-band frequencies [Doctoral dissertation, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1056658481

    APA Style (7th edition)

  • Richard, Mark. An experimental investigation of high temperature superconducting microstrip antennas at K- and Ka-band frequencies. 1993. Case Western Reserve University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1056658481.

    MLA Style (8th edition)

  • Richard, Mark. "An experimental investigation of high temperature superconducting microstrip antennas at K- and Ka-band frequencies." Doctoral dissertation, Case Western Reserve University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=case1056658481

    Chicago Manual of Style (17th edition)

case1056658481
1,123
© 1993, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.