volume | PIER Journals

2018-01-11

A Dual-Band Slot-Embedded Microstrip Antenna for Dual-Polarization Operation

Muhammad Asad Rahman,

Dr. Muhammad Asad Rahman

Graduate School of Science and Engineering

Saga University

Japan

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Eisuke Nishiyama,

Dr. Eisuke Nishiyama

Department of Electric and Electronic Engineering

Saga University

Japan

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Ichihiko Toyoda

Dr. Ichihiko Toyoda

Department of Electric and Electronic Engineering

Saga University

Japan

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Progress In Electromagnetics Research M, Vol. 63, 141-149, 2018

doi:10.2528/PIERM17100501

Abstract

In this study, a new slot embedded microstrip antenna for dual-band dual-polarization operation is proposed. The antenna comprises a single layer structure with a square radiating patch where the feed port is located along a diagonal line of the patch. Two narrow slots parallel and close to the radiating edges of the patch are loaded on the patch. Patch without slots is resonated for X-band and another resonant frequency at Ku-band is obtained by loading the slots. Moreover, the loading of slots helps to produce two orthogonal modes of equal amplitudes at X-band. Furthermore, the feed port along the diagonal line of the square patch makes it possible to radiate dierent polarization at the two bands. The antenna can radiate circular and linear polarization at X- and Ku-band, respectively. Current distributions of the antenna at both bands are observed to explain the behavior of the antenna and conrm the polarization characteristics at X- and Ku-band. A 3-dB axial ratio bandwidth of 1.35% is achieved. Measured gains of 6.60 dBic and 5.80 dBi with good radiation performances are achieved at X- and Ku-band, respectively. Moreover, good measured cross-polarization levels of 27.6 dB at X-band and 15.6 dB at Ku-band are obtained. The measured performances of the fabricated antenna are consistent with simulated results.

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Muhammad Asad Rahman, Eisuke Nishiyama, and Ichihiko Toyoda, "A Dual-Band Slot-Embedded Microstrip Antenna for Dual-Polarization Operation," Progress In Electromagnetics Research M, Vol. 63, 141-149, 2018.
doi:10.2528/PIERM17100501

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