Frequency switchable branch‐line hybrid coupler | Zendy

Chongcheawchamnan Mitchai | Zendy; Julrat Sakol | Zendy; Shafique Mohammad F. | Zendy; Pamornak Burawich | Zendy; Robertson Ian D. | Zendy

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Frequency switchable branch‐line hybrid coupler

Author(s) -

Chongcheawchamnan Mitchai,

Julrat Sakol,

Shafique Mohammad F.,

Pamornak Burawich,

Robertson Ian D.

Publication year - 2013

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.27648

Subject(s) - multi band device , microwave , transmission line , transformer , hybrid coupler , electronic engineering , engineering , frequency band , electric power transmission , line (geometry) , electrical engineering , power dividers and directional couplers , telecommunications , voltage , mathematics , geometry , antenna (radio)

This article first presents a frequency‐selectable branch‐line hybrid coupler.To provide a frequency‐selection function, a dual‐band band‐pass transmission‐line transformer (TLT) with a frequency selective function is used. This is achieved by replacing a dual‐band TLT with a variable capacitively loaded spur‐line filter. The technique is demonstrated with a design at 0.8 and 1.75 GHz. Measured S‐parameter results confirm the validity of the technique. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1661–1663, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27648

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