Two-element dual-frequency microstrip antenna with high isolation

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5 Citations (Scopus)


A compact design of a dual-frequency dual-polarised microstrip antenna structure with highly decoupled input ports is presented. The proposed antenna structure consists of two radiating elements, an annular ring and a circular disk, that are placed concentrically at the same layer. The two radiating elements are fed by an aperture-coupled feed and a coplanar-microstrip-line feed, respectively. Several prototypes of the proposed dual-frequency antennas operated at the frequency ratios ranged from 1.2 to 2.6 were constructed and tested. The experimental results show the input isolation of less than -50 dB is obtained.

Original languageEnglish
Pages (from-to)1786-1787
Number of pages2
JournalElectronics Letters
Issue number25
Publication statusPublished - 2003 Dec 11

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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