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A bandwidth enhanced method of a low-profile substrate integrated waveguide (SIW) cavity-backed slot antenna is presented in this paper. Bandwidth enhancement is achieved by simultaneously exciting two hybrid modes in the SIW-backed cavity and merging them within the required frequency range. These two hybrid modes, whose dominant fields are located in different half parts of the SIW cavity, are two...
A 2*2 antenna array constructed by using a new substrate integrated waveguide (SIW) cavity-backed slot antenna as its single element is proposed in this paper. Comparing to that of a single antenna element, the antenna array gain has been improved of 5.8 dB. The proposed antenna array has a lot of advantages, such as low profile, light weight, easy fabrication with low cost and convenient integration...
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