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Progress In Electromagnetics Research Letters
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DUAL BAND HALF MODE SIW SEMI CIRCULAR CAVITY BACK SLOT ANTENNA

By J. Dokuparthi and A. Sudhakar

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Abstract:
In this paper, a half-mode substrate integrated waveguide (HMSIW) semi-circular cavity backed antenna, using two higher order modes (TM210 and TM020), has been proposed for dual-band operation. A semicircular slot is engraved on the top of the HMSIW structure forming a cavity that is fed by co-axial feeding to get impedance matching with the line. The theoretical operation of TM210 and TM020 modes is explained using the simulation tool. The antenna parameters such as reflection coefficient, gain, and radiation patterns have been measured for the fabricated antenna. The antenna radiates in two bands, in which the first band center frequency is 8.5 GHz, and the second band center frequency is 10.6 GHz. Peak gains at boresight direction are around 7.5 dBi and 6 dBi, respectively.

Citation:
J. Dokuparthi and A. Sudhakar, "Dual Band Half Mode SIW Semi Circular Cavity Back Slot Antenna," Progress In Electromagnetics Research Letters, Vol. 87, 7-14, 2019.
doi:10.2528/PIERL19062005
http://www.jpier.org/pierl/pier.php?paper=19062005

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