Dual-polarized Slot Antenna For Millimeter Waves

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The microstrip antennas are not suitable in the millimeter wave bands due to the large loss of the substrates. On the other hand, the waveguide slot array antenna, which has advantages of low profile, low cross-polarization level and very low transmission loss, is widely employed in the millimeter wave band. The proposed dual-polarized antenna fed by the tapered slot SICL balun is suitable for the airborne radar application.

Electronic Theses and Dissertations, 2004-2019

Title

Author

Keywords

Wideband, Dual-Polarized, Differential, SIW, Cavity Backed, Slot, Antenna, Double-Resonant, Circular Polarization, Array

Abstract

Antenna

A new technique for designing wideband dual-polarized cavity-backed slot antennas is presented. The structure is in the form of a double-resonant, dual-polarized slot antenna backed by a shallow substrate integrated cavity with a depth of approximately one tenth the free space wavelength. The presence of the cavity behind the slot enhances the antenna's directivity and reduces the possibility of surface wave propagation in the antenna substrate when the element is used in an array environment. Moreover, the dual-polarized nature of this radiating element may be exploited to synthesize any desired polarization (vertical, horizontal, RHCP, or LHCP). The double-resonant behavior observed in this substrate-integrated cavity-backed slot antenna (SICBSA) is utilized to enhance its bandwidth compared to a typical cavity-backed slot antenna. A prototype of the proposed antenna is fabricated and tested. Measurement results indicate that a bandwidth of 19%, an average gain of 5.3 dB, and a wideband differential isolation of 30 dB can be achieved using this technique. The principles of operation along with the measurement results of the fabricated prototype are presented and discussed in this dissertation. The SICBSA is investigated as a candidate for use as an array element. A uniform two element phased array is demonstrated to locate the main beam from boresight to thirty degrees. The potential effects of mutual coupling and surface wave propagation are considered and analyzed.

Notes

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Graduation Date

2010

Advisor

Wahid, Parveen

Degree

Doctor of Philosophy (Ph.D.)

College

College of Engineering and Computer Science

Department

Electrical Engineering and Computer Science

Degree Program

Electrical Engineering

Format

Dual-polarized Slot Antenna For Millimeter WavesAntenna

application/pdf

Identifier

Dual-polarized Slot Antenna For Millimeter Waves

CFE0003066

URL

http://purl.fcla.edu/fcla/etd/CFE0003066

Language

Dual-polarized Slot Antenna For Millimeter Waves Frequency

English

Release Date

Dual-polarized Slot Antenna For Millimeter Waves

May 2010

Length of Campus-only Access

None

Access Status

Dual-polarized Slot Antenna For Millimeter Waves Wave

Doctoral Dissertation (Open Access)

STARS Citation

Dual-polarized Slot Antenna For Millimeter Waves Chart

Paryani, Rajesh, 'Design Of A Wideband Dual-polarized Cavity Backed Slot Antenna' (2010). Electronic Theses and Dissertations, 2004-2019. 4226.
https://stars.library.ucf.edu/etd/4226

Dual Polarized Slot Antenna

Included in

Dual-polarized Slot Antenna For Millimeter Waves Wavelength

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