A compact dual-band monopolar patch antenna using TM sub(01) and TM sub(41) modes

A compact dual-band monopolar patch antenna (DBMPA) using the TM sub(01) and TM sub(41) modes is proposed. The DBMPA consists of: (1) coupled-fed fan-shaped patches with four shorting pins each to generate the TM sub(41) higher order resonant mode for monopole-like radiation pattern with compact siz...

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Bibliographic Details
Published in:Microwave and optical technology letters 2016-07, Vol.58 (7), p.1699-1703
Main Authors: Tak, Jinpil, Kang, Do-Gu, Choi, Jaehoon
Format: Article
Language:English
Subjects:
Antennas
Bandwidth
Gain
Impedance matching
Joining
Medical
Microwaves
Patch antennas
Online Access:Get full text
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Summary:A compact dual-band monopolar patch antenna (DBMPA) using the TM sub(01) and TM sub(41) modes is proposed. The DBMPA consists of: (1) coupled-fed fan-shaped patches with four shorting pins each to generate the TM sub(41) higher order resonant mode for monopole-like radiation pattern with compact size, and (2) a cross-shaped co-planar coupled feed patch at the center for impedance matching and exciting the TM sub(01) mode. The proposed antenna operates in the industrial, scientific, and medical (ISM) 2.45 GHz band and the ISM 5.8 GHz band, with monopole-like radiation characteristic in both bands. The proposed DBMPA only has a thickness of 0.01 lambda sub(0) and a diameter of 0.39 lambda sub(0). The corresponding fractional 10-dB return loss bandwidths and maximum gains are 3.4% and -0.05 dBi for the ISM 2.45 GHz band, and 3.8% and 2.45 dBi for the ISM 5.8 GHz band. Microwave Opt Technol Lett 58:1699-1703, 2016
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.29889