Showing papers by "Yuan Gao published in 2006"
TL;DR: In this article, a planar ultra-wideband ring monopole antenna with a band-notch feature is presented, which is achieved by embedding a quarter-wavelength tuning stub in the circular ring.
Abstract: A compact planar ultra-wideband ring monopole antenna with a band-notch feature is presented. The band-notch characteristic is achieved by embedding a quarter-wavelength tuning stub in the circular ring monopole. The notched band is controllable by adjusting the length of the tuning stub. The measured antenna radiation patterns show good omnidirectional performance across the operation bandwidth. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 125–126, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21283
96 citations
TL;DR: In this paper, a novel wideband hybrid dielectric resonator antenna structure consisting of a rectangular D resonator (DR) and a coplanar waveguide (CPW) inductive slot is proposed.
Abstract: A novel wideband hybrid dielectric resonator antenna structure comprises a rectangular dielectric resonator (DR) and a coplanar waveguide (CPW) inductive slot is proposed. In this configuration, the CPW inductive slot simultaneously acts as an effective radiator and the feeding structure of the DR. Dual resonances of the two radiators are merged to extend the antenna's bandwidth. A parametric study is performed to optimize the antenna performance and a prototype for 5-GHz WLAN application has been built and tested.
73 citations
TL;DR: In this paper, a hybrid antenna structure that combines a rectangular dielectric resonator and a CPW-fed slot with tuning stub is proposed to resonate at the lower (24 GHz) and upper (53 GHz) 80211 WLAN frequency bands, respectively.
Abstract: A novel hybrid antenna structure that combines a rectangular dielectric resonator and a CPW-fed slot with tuning stub is proposed The proposed antenna is designed to resonate at the lower (24 GHz) and upper (53 GHz) 80211 WLAN frequency bands, respectively Comparisons between the simulation and measurement results confirm the good properties exhibited by the proposed antenna © 2005 Wiley Periodicals, Inc Microwave Opt Technol Lett 48: 170–172, 2006; Published online in Wiley InterScience (wwwintersciencewileycom) DOI 101002/mop21296
41 citations
TL;DR: In this paper, a wideband hybrid dielectric resonator antenna (DRA) was investigated experimentally, which consists of a rectangular DRA and a conductor-backed coplanar waveguide slot etched on a small ground plane.
Abstract: A wideband hybrid dielectric resonator antenna (DRA) is investigated experimentally. The proposed hybrid DRA comprises a rectangular dielectric resonator and a conductor-backed coplanar waveguide (CB-CPW) slot etched on a small ground plane. Dual resonances of the two radiators are merged to expand the antenna bandwidth. By utilising the CB-CPW structure, a back-cavity is formed underneath the slot to suppress the backward radiation. Hence consistent unidirectional radiation pattern is achieved across the matching band.
23 citations
09 Jul 2006
TL;DR: In this paper, a dual-band hybrid antenna consisting of a CPW-fed inverted-L monopole and a high permittivity rectangular dielectric resonator (DR) is presented.
Abstract: In this paper, a novel dual-band hybrid antenna consists of a CPW-fed inverted-L monopole and a high permittivity rectangular dielectric resonator (DR) is presented. The inverted-L monopole simultaneously acts as an effective radiator and the feeding structure of the DR. The high permittivity rectangular DR can be efficiently excited if its dimensions and the relative position on the monopole are properly determined. By connecting the monopole and the DR in parallel, a dual-band hybrid antenna with compact size is achieved. A prototype antenna has been designed to satisfy the IEEE 802.11 WLAN standards.
8 citations
01 Jan 2006
TL;DR: In this article, a wideband hybrid dielectric resonator antenna structure consisting of a rectangular D resonator and a coplanar waveguide (CPW) inductive slot is proposed.
Abstract: A novel wideband hybrid dielectric resonator antenna structure comprises a rectangular dielectric resonator (DR) and a coplanar waveguide (CPW) inductive slot is proposed. In this configuration, the CPW inductive slot simultaneously acts as an effective radiator and the feeding structure of the DR. Dual res- onances of the two radiators are merged to extend the antenna's bandwidth. A parametric study is performed to optimize the an- tenna performance and a prototype for 5-GHz WLAN application has been built and tested. Index Terms—Dielectric resonator antennas (DRAs), slot an- tennas, wideband antennas.
2 citations
01 Oct 2006
TL;DR: In this article, a novel lens antenna comprising of a compound Fresnel zone plate (FZP) lens is proposed and realized for the frequency of 57.5 GHz, and the unique realization of the lens antenna is clearly explained in this paper.
Abstract: In this paper, a novel lens antenna comprising of a compound Fresnel zone plate (FZP) lens is proposed and realized. The unique realization of the lens is clearly explained in this paper. The compound lens consists of two half-open FZP lenses, plane and conical, conformal to a thin low-loss perspex dome with a shape of a truncated cone. The lens antenna has been designed for the frequency of 57.5 GHz. The compound FZP lenses are 3D in configuration and have more levels of design and optimization freedom
09 Jul 2006
TL;DR: In this article, a novel wideband dielectric resonator antenna (DRA) structure is proposed, where a low profile DR with high permittivity is placed in close proximity to a microstrip-fed inverted-L monopole and there is no ground plane underneath the DR.
Abstract: In this paper, a novel wideband dielectric resonator antenna (DRA) structure is proposed. A low-profile DR with high permittivity is placed in close proximity to a microstrip-fed inverted-L monopole and there is no ground plane underneath the DR. The inverted-L monopole simultaneously acts as an effective radiator and the feeding structure of the DR. By carefully tuning the position of the resonator, DR can be electromagnetically coupled to the monopole and also works as an efficient radiator. Dual resonances of the two radiators are merged together to achieve a wideband operation.