Self-diplexed antenna based on loading asymmetric grounding-vias

Abstract

This article presents a simple and efficient method for the design of a self‐diplexed antenna based on loading asymmetric grounding‐vias. The structure consists of two antenna elements loaded with two asymmetric grounding‐vias, specifying the uplink and downlink operation frequencies. By choosing the appropriate positions of the two grounding‐vias, high isolation between the two antennas can be achieved. To validate the feasibility of the proposed structure, two self‐diplexed antennas with different operational frequencies have been fabricated and tested. Experimental results verify the multi‐functionalities of the proposed compact structure in terms of high isolation and low cross‐polarization discrimination.

Compact differential‐fed dual‐band antenna via loading shorting pin

“…Therefore, it is convenient to control the TM 12 mode and TM 30 mode moving toward each other to achieve a broader bandwidth. There are many reported approaches to adjust and control the resonant frequency of a patch antenna, such as adding stubs on antenna edges, etching slots on the surface of antenna, and loading shorting pin . Among these methods, loading shorting pin is an easier and effective technique which can tune the resonant frequency over a wide range …”