Design of dual-band slotted patch hybrid couplers based on PSO algorithm
Abstract
A planar 3 dB patch hybrid coupler using cross and circular-shape slots is presented for a dual-band application. By inductively loading a pair of cross slots and four circular holes on a square patch, the matching and isolation performance of the miniaturized patch hybrid coupler is improved. In addition, the open-circuited shunt stubs are further installed at four ports to realize two operating bands. Since the slotted patch resonator cannot be characterized by the closed-form transmission line theory, the particle swarm optimization (PSO) algorithm is constructed and integrated with a full-wave solver to determine the variable parameters of the proposed structure. Finally, a prototype dual-band coupler operating at 915 MHz and 1575 MHz is designed and fabricated. Measured results show a good agreement with those obtained from simulation.
Recommended Citation
Y. Li et al., "Design of dual-band slotted patch hybrid couplers based on PSO algorithm," Journal of Electromagnetic Waves and Applications, vol. 25, no. 17-18, pp. 2409 - 2419, Taylor and Francis Group; Taylor and Francis, Jan 2012.
The definitive version is available at https://doi.org/10.1163/156939311798806220
Department(s)
Electrical and Computer Engineering
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Taylor and Francis Group, Taylor and Francis, All rights reserved.
Publication Date
April, 2012
