A Compact Wideband Circularly Polarized Planar Filtenna Using Synthesis Technique for 5 GHz WLAN Application

This paper presents a compact wideband circularly polarized planar filtenna based on filter synthesis methodology. The proposed filtenna consists of third order hairpin line resonator filter coupled with an circularly polarized hexagonal shaped radiating element. The better integration between anten...

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Bibliographic Details
Published in:International journal of electronics and communications 2022-05, Vol.148, p.154180, Article 154180
Main Authors: Pal, Pravesh, Sinha, Rashmi, Kumar Mahto, Santosh
Format: Article
Language:English
Subjects:
Axial ratio
Filtenna
Hairpin line filter
Hexagonal
Resonator
Wideband
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Summary:This paper presents a compact wideband circularly polarized planar filtenna based on filter synthesis methodology. The proposed filtenna consists of third order hairpin line resonator filter coupled with an circularly polarized hexagonal shaped radiating element. The better integration between antenna and filter helps in achieving both compactness and high frequency selectivity. The proposed filtenna exhibits a wideband filtering response with an impedance bandwidth of 35.77% (3.92–5.63 GHz), a wide axial ratio bandwidth of 34.94% (3.66–5.21 GHz), and a peak gain of 2.25dBic within its operating bandwidth. In order to validate its practicability, the filtenna is designed and fabricated. The measurement results shows that the proposed filtenna exhibits good stopband gain rejection, good selectivity at band edges, flat passband gain, and a wide axial ratio bandwidth well suited for 5 GHz WLAN application.
ISSN:1434-8411
1618-0399
DOI:10.1016/j.aeue.2022.154180