An S-/Ka-band shared-aperture antenna with frequency switching function for 5G applications is proposed in this letter. 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 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 4.06-5.35 and 12.0-14.5 dBi over the S-band (3.44-3.56 GHz) and the Ka-band (27.54-28.46 GHz), respectively. The -3 dB beam steering coverage for the Ka-band is more than \pm 40° for both polarizations.
Bibliographical noteFunding Information:
This work was supported by theMSIT (Ministry of Science, ICT), SouthKorea, under the ITRC (Information Technology Research Center) support program (IITP-2019-2014-1-00729) supervised by the IITP (Institute of Information and Communications Technology Planning and Evaluation).
Manuscript received February 28, 2021; accepted March 27, 2021. Date of publication March 30, 2021; date of current version June 2, 2021. This work was supported by the MSIT (Ministry of Science, ICT), South Korea, under the ITRC (Information Technology Research Center) support program (IITP-2019-2014-1-00729) supervised by the IITP (Institute of Information and Communications Technology Planning and Evaluation). (Corresponding author: Young J. Yoon.) The authors are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, South Korea (e-mail: email@example.com; firstname.lastname@example.org). Digital Object Identifier 10.1109/LAWP.2021.3069709
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All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering