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Gain-Enhanced SIW Cavity-Backed Slot Antenna with Arbitrary Levels of Inclined Polarization

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PROJECT TITLE :

Gain-Enhanced SIW Cavity-Backed Slot Antenna with Arbitrary Levels of Inclined Polarization

ABSTRACT:

This letter describes a gain enhancement technique for a dual-polarized substrate integrated waveguide cavity-backed slot antenna by using a high-order cavity resonance to come up with arbitrary levels of inclined linear polarization (LP). To do therefore, the metal posts are embedded in a main cavity to excite the TM220 mode of the cavity and management the amount of coupling to get adjustable inclined linear polarization. To validate the simulated results, an antenna is intended, manufactured, and tested. The proposed antenna exhibits high front-to-back ratio (F/B) of additional than 20 dB in the broadside direction and a relative gain of half dozen.9 dBi at the resonant frequency. The antenna can also give an adjustable inclined LP with an aspect ratio of Exmax/Eymax ranging from zero.23 to 4. The proposed technique can additionally be utilized to realize even higher gain by exciting higher order mode cavity resonances, such as TM440 and TM660. The proposed antenna exhibits the advantages of simple feed network and a lot of compactness compared with the SIW cavity-backed slot antenna/array that has the identical gain with inclined polarization.


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Gain-Enhanced SIW Cavity-Backed Slot Antenna with Arbitrary Levels of Inclined Polarization - 4.9 out of 5 based on 18 votes

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