A Single-Feed Dual-Band Dual-Beam Filtering Patch Antenna With Concurrent CP and LP Properties

A single-feed dual-band dual-beam filtering patch antenna with both circular polarization (CP) and linear polarization (LP) properties is proposed in this letter. Dual bow-tie shaped patches are used for concurrently achieving dual-beam and CP radiation in the lower passband. By employing L-shaped m...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2024-11, p.1-5
Main Authors: Zheng, Zhirui, He, Jiahao, Tan, Xiaoheng, Li, Mei
Format: Article
Language:English
Subjects:
Antennas
Dual band
dual-beam
Filtering
filtering antenna
Impedance
Metals
Passband
Pins
Strips
Substrates
Vectors
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Description
Summary:A single-feed dual-band dual-beam filtering patch antenna with both circular polarization (CP) and linear polarization (LP) properties is proposed in this letter. Dual bow-tie shaped patches are used for concurrently achieving dual-beam and CP radiation in the lower passband. By employing L-shaped metal strips and a folded T-shaped stepped impedance feedline (FTSIF), the filtering response is introduced, simultaneously giving rise to the upper passband with LP operation. Additionally, through loading a T-shaped resonator, a deep radiation null (RN) is yielded between the two passbands. Consequently, dual-beam filtering responses with CP in the lower and LP in the upper passbands are, respectively, realized. For validation, a prototype is fabricated and tested. Two measured passbands operate at 5.30-5.69 GHz and 6.11-6.29 GHz, showing good dual-beam CP and LP radiation, respectively.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2024.3495047