Planar Sub-Millimeter-Wave Array Antenna with Enhanced Gain and Reduced Sidelobes for 5G Broadcast Applications

In this paper, a compact, broadband, planar array

proposed for the 26 GHz fifth-generation (5G) broadcast

a substrate integrated cavity (SIC) as the power splitter. The two

are compensated with each other to form an omni-directional

frequencies of the dipoles and the SIC, a wide impedance

array while reducing the complexity, loss and size of the feeding

power splitting functions is proposed for the 1st time. The

and therefore, the grating lobes level can be significantly reduced.

enhanced gain of over 12 dBi is designed and prototyped. The

cost, which is desirable for 5G commercial applications. Measured

high-gain array antenna has a broad bandwidth, omni-directional

pattern in horizontal plane, and low side-lobes.