Design of half-mode substrate integrated cavity inspired dual-band antenna

摘要

A novel and compact design of dual-band antenna, based on substrate integratedcavity is developed. The antenna comprises a half-mode cavity, anopen-ended longitudinal slot, and a printed inset-feed mechanism. Finally, theproposed design is fabricated and its results are validated. It shows the measuredimpedance bandwidths of 3.51% and 1.40% at 8.8 and 11.2 GHz, respectively.Their corresponding peak gain values of 5.04 and 5.01 dBi. The resultsof the fabricated antenna in terms of bandwidth, gain, and radiation patternsare in close agreement with their simulated counterparts. On the accountcavity-backed design, the antenna exhibits unidirectional and stable radiationpatterns in both bands. Moreover, the uniplanar design gives additional flexibilityof easy integration with other active/passive circuits. The proposedantenna can be a suitable candidate for dual-frequency operation in X-band(8-12 GHz), especially where small frequency-ratio is stringent.