On the review of magnetic properties of metamaterials CRLH microwave couplers: Design and analysis | ||||
| Journal of Engineering Science and Military Technologies | ||||
| Article 1, Volume 7, Issue 2, September 2023, Page 61-97 PDF (2.71 MB) | ||||
| Document Type: Review articles | ||||
| DOI: 10.21608/ejmtc.2023.195782.1249 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Mahmoud A Abdalla 1; zhirun Hu  2
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| 1Military Technical College | ||||
| 2University of Manchester | ||||
| Abstract | ||||
| This paper introduces a review of the design and analysis of different designs for tunable/nonreciprocal and compact-size microwave couplers. The presented couplers are designed based on composite right/ left-handed (CRLH) transmission lines and in the planar structures made of ferrite substrates. The CRLH transmission lines have many attractive features of nonlinearity operation with the frequency that can help the designers to present a compact and different frequency functionality of the presented devices. Moreover, the ferrite substrates are anisotropic media that help the designer to introduce nonreciprocal devices. Mixing the design aspects from CRLH transmission lines and the ferrite substrates can lead to novel properties. According to this approach, we present a collecting review for many microwave couplers with small size/ different frequency functionalities and different tunable/ non-reciprocity properties. The reviewed designs are implemented in coplanar waveguides hosting planar structures that help for reducing the needed DC magnetic bias for the ferrite substrates for its operation. All the reviewed couplers are presented in a detailed explanation of theory parts and complete circuit model and electromagnetic simulations and finally experimental measurements. | ||||
| Keywords | ||||
| Couplers; CRLH transmission lines; ferrite; microwave components | ||||
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