Filtering Leaky-Wave Antenna with Series-Coupled Patch Array

A design of leaky-wave antenna with series-coupled patch array based on integrated filtering function is proposed. Methods of filter synthesis are utilized to analyze its filtering networks. An equivalent filter circuit with lossy coupling model between patches is derived for characterizing the coup...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 22; no. 10; pp. 1 - 5
Main Authors Chen, Pei-Yao, Sun, Sheng, Hu, Yi-Yao, Hao, Wenqu, Hu, Jun
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2023
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Admittance
Admittance inverter
Antenna arrays
Antenna design
Antennas
Circuit design
complex coupling
Coupling
Couplings
Design optimization
Equivalent circuits
Filtering
filtering antennas
Filtration
Impedance matching
Inverters
Leaky wave antennas
Leaky waves
lossy circuits
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Summary:A design of leaky-wave antenna with series-coupled patch array based on integrated filtering function is proposed. Methods of filter synthesis are utilized to analyze its filtering networks. An equivalent filter circuit with lossy coupling model between patches is derived for characterizing the coupled patch array with a finite length. The relationship between the equivalent circuit and the structure parameters is revealed for the optimization design of the filtering antenna. Impedance matching at ports is considered in optimization due to the lossy coupling and the feeding structure. The method's validity is demonstrated by theoretical derivation, simulation, and measurement. The measured results show the radiation angle and peak gain of the fifth-ordered filtering antenna from 12° to 43° and 9.23 dBi to 10.36 dBi, respectively, as the frequency varies from 2.4 GHz to 2.6 GHz.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2023.3293614