An S-/Ka-band shared-aperture antenna with frequency switching function for 5G applications is proposed in this paper. The proposed antenna comprises a thick patch containing a slotted cavity array (TPCSCA), S-band feeding structure, and coaxial cables for Ka-band. The TPCSCA is designed using 16 Ka-band slotted cavity antennas inside an S-band thick patch. Half of these Ka-band antenna elements radiate a +45 slanted polarization (SP) wave, whereas the others radiate a 45 SP wave. These elements are arranged in the form of a checkerboard and fed by coaxial cables. The S-band feeding structure is designed as a microstrip-fed slot and operates the TPCSCA as a TM_010 mode patch antenna in S-band. The measurement results show realized gains of 4.065.35 and 12.014.5 dBi over the S-band (3.443.56 GHz) and the Ka-band (27.5428.46 GHz), respectively. The 3 dB beam steering coverage for the Ka-band is more than 40 for both polarizations.
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering