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This paper presents a small aperture shaped ring focus reflector antenna that covers the frequency band from 7.9 GHz to 9.1 GHz, featuring a wide bandwidth, low VSWR and low-cross-polarization levels. The proposed antenna is composed of a feed horn, a polarizer, a main- and sub- reflector. To validate the concept, an antenna prototype is manufactured and then tested. Both simulated and measured results...
A dual-polarized dielectric resonator antenna (DRA) of simple structure is presented with very high isolation and lower cross-polarization. Its measured isolation reaches 46.8 dB within the impedance bandwidth of larger than 12.5% by using the H/U-shaped slot coupling with multi-stub feed lines. The measured cross-polarization level is −21.4 dB and −18.1dB for two ports, respectively. This DRA can...
A hybrid-fed dual-polarized stacked patch element with low cross-polarization and high port isolation is introduced. The proposed antenna element achieves a 10 dB return loss bandwidth of 840 MHz (about 15%) in C band. The crosspolarization of antenna keeps under -37 dB in both orthogonal ports with the isolation remains less than -42 dB in the whole bandwidth. The front-back ratio of radiation pattern...
A compact tapered CPW-fed hollowed printed monopole antenna on the liquid crystal polymer (LCP) substrate with an extremely wide bandwidth (EWB) is introduced. The simulated results demonstrate that this antenna achieves an impedance bandwidth from 0.435 GHz to 14.52 GHz (33:1) for VSWRles2, and exhibits a nearly omnidirectional radiation pattern, while its area is only about 0.18 lambda1times0.13...
A compact semi-elliptical patch antenna fed by a tapered coplanar waveguide (CPW) is presented. The simulated and experimental results demonstrate that the antenna possesses the desirable super-wideband (SWB) characteristics, achieving a ratio bandwidth of 19.7:1 for VSWRles2, and exhibits a nearly omni-directional radiation pattern, while its area is only about 0.15 lambda1 times 0.2 1 lambda1, where...
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