DESIGN OF A WIDEBAND UNIDIRECTIONAL SLOT ANTENNA WITH STEPPED REFLECTOR FOR FRONT TO BACK RATIO ENHANCEMENT | Zendy

Liang Lu | Zendy; YongChang Jiao | Zendy; Zibin Weng | Zendy; Lei Zhou | Zendy

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DESIGN OF A WIDEBAND UNIDIRECTIONAL SLOT ANTENNA WITH STEPPED REFLECTOR FOR FRONT TO BACK RATIO ENHANCEMENT

Author(s) -

Liang Lu,

YongChang Jiao,

Zibin Weng,

Lei Zhou

Publication year - 2016

Publication title -

progress in electromagnetics research c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 34

ISSN - 1937-8718

DOI - 10.2528/pierc16071804

Subject(s) - wideband , reflector (photography) , front (military) , optics , antenna (radio) , acoustics , materials science , physics , electrical engineering , engineering , meteorology , light source

A compact unidirectional slot antenna with front to back ratio (FBR) enhancement is proposed. The antenna consists of a novel compact slot driven antenna, a stepped reflector and a vertical balun from a microstrip to a parallel strip line. Better FBRs are obtained by optimizing the stepped reflector. Impedance bandwidths are enhanced by applying the balun and a pair of microstrip stub etched on the opposite side of the slot. Then, the antenna is manufactured and measured. Measured results show that the proposed antenna has a bandwidth of 76% (1.53-3.41 GHz) for VSWR ≤ 1.5. In addition, from 1.7 to 3.2 GHz, the antenna gains are higher than 8.6 dBi, and the FBRs are greater than 22 dB. Good agreement between the simulated and measured results is obtained. All above indicates that the proposed antenna can be widely used in wireless communications.

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