High-Gain L-Probe Excited Substrate Integrated Cavity Antenna Array with LTCC-Based Gap Waveguide Feeding Network for W-Band Application

PROJECT TITLE :

High-Gain L-Probe Excited Substrate Integrated Cavity Antenna Array with LTCC-Based Gap Waveguide Feeding Network for W-Band Application

ABSTRACT:

The W-band high-gain L-probe excited substrate integrated cavity (SIC) antenna and its arrays on a coffee-temperature cofired ceramic (LTCC) substrate are presented in this paper. To achieve a high gain, the SIC antenna is worked up using L-probe feeding techniques. The SIC of the antenna servers as main radiator and the L-probe is involved in the radiation. A completely unique low-loss LTCC-based ridge gap waveguide (GWG) is also designed in this work. This GWG forms a compact hybrid 2-layer low-loss feeding network with a substrate integrated waveguide (SIW) feeding network for an $8 times 8$ antenna array. A high-gain antenna array is achieved by combining the high-gain antenna part and low-loss hybrid feeding network. Further, a reference antenna array with a feeding network composed solely of SIW is designed for comparison. With the reconfiguration of the radiating component, feeding network, and transition, the proposed antenna array shows a wide measured impedance bandwidth of fourteen.9percent from eighty seven to one hundred and one GHz for $vert textS11vert < - ten;textdB$ and a gain of up to twenty three.eight dBi. The measured aperture potency of the proposed array is forty two.threep.c, that is eightp.c above that of the reference array.

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