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Four-element microstrip patch antenna array is proposed at millimeter wave frequency. The proposed antenna achieves the impedance bandwidth of 4.6% at 28 GHz as well as a flat gain of 13.5 dB over an operating frequency band. It uses the aperture coupling along with air cavities to feed the patch elements. It achieves the side lobe level of -23 dB in the H Plane and -14.5 dB in the E plane. In addition,...
Triangular cavity backed T slot planar antenna is proposed for 60 GHz applications. Triangular cavity is designed using surface integrated waveguide technology. It exhibits the gain of 8.77 dBi. It has wide bandwidth of 8.4% at center frequency. Sidelobe level in E and H plane are −11.7 dB and −12.1 dB, respectively.
To obtain wide bandwidth and high gain at millimeter wave frequency, Antipodal Fermi-Linear Tapered Slot Antenna (AFLTSA) is proposed. The proposed antenna achieves wide bandwidth from 23 to 33 GHz as well as flat gain of 14.5 dBi over wide operating frequency band. It achieves the side lobe level of −8 dB in H Plane and −16 dB in E plane. Proposed design also achieves the front-to-back ratio of −20...
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