Broadband Dual Varactor Diode-Loaded Elliptical Slot Antenna with an Orthogonal Feed at K-Band

Abstract

An orthogonally-fed, small elliptical slot antenna loaded by a varactor diode, and operating in K-band frequency range (18 - 26.5 GHz), is designed for use in synthetic aperture radar imaging arrays. The broadest dimensions of the antenna are restricted to being less than λ/2 as a consequence of required spacing in an imaging array. The feed design uses a coplanar waveguide with a 90° bend without a direct DC connection to the antenna. The final slot employs two varactor diodes resulting in 3.5 GHz of bandwidth suitable for microwave 3D holography imaging.

Meeting Name

IEEE International Instrumentation and Measurement Technology Conference: Instrumentation and Measurement for Life (2013: May 6-9, Minneapolis, MN)

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Orthogonal Coplanar Waveguide Feed; Elliptical Slot; Loaded Slot; Microwave Imaging; Resonant Slots; Tunable Antenna; Varactor Diodes; Antenna Feeders; Instruments; Measurements; Radar Antennas; Radar Imaging; Synthetic Aperture Radar

International Standard Book Number (ISBN)

978-1467346221

International Standard Serial Number (ISSN)

1091-5281

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2013 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 May 2013

Link to Full Text

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