DocumentCode :
55379
Title :
Tunable SIW Structures: Antennas, VCOs, and Filters
Author :
Entesari, Kamran ; Saghati, Alireza Pourghorban ; Sekar, Vikram ; Armendariz, Marcelino
Author_Institution :
Electr. & Comput. Eng. Dept., Texas A&M Univ., College Station, TX, USA
Volume :
16
Issue :
5
fYear :
2015
fDate :
Jun-15
Firstpage :
34
Lastpage :
54
Abstract :
Due to their high quality factor (hundreds), high power handling, and good isolation, SIW structures are excellent candidates for a variety of microwave devices, including filters, antennas, VCOs, and isolators. However, their use has been hindered due to their narrow BW and high sensitivity to the fabrication process. Tuning the SIW-based microwave structures has the advantages of covering more bands, the possibility of post-fabrication fine-tuning, and less crosstalk sensitivity. However, the conventional tuning methods applicable to regular microwave structures are not effective for SIWs. Finding a way to tune these structures over a wide tuning range while maintaining their high Q seems to be very appealing and, at the same time, very challenging. To address all these points in more detail, the main focus of this article was on frequency-tunable/ reconfigurable SIW structures. The reported tuning methods applied to SIW structures so far are studied, and their pros and cons are discussed in detail. Also, separate libraries for SIW-based tunable filters, antennas, and VCOs are provided.
Keywords :
antennas; microwave filters; microwave isolators; microwave materials; microwave oscillators; tuning; voltage-controlled oscillators; waveguides; microwave VCO; microwave antennas; microwave filters; microwave isolator; post fabrication fine tuning; reconfigurable SIW structure; tunable SIW structure; tuning methods; Antenna measurements; Microwave filters; Rectangular waveguides; Resonator filters; Tunable circuits and devices; Voltage-controlled oscillators;
fLanguage :
English
Journal_Title :
Microwave Magazine, IEEE
Publisher :
ieee
ISSN :
1527-3342
Type :
jour
DOI :
10.1109/MMM.2015.2408273
Filename :
7102875
Link To Document :
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