A patch antenna and our proposed metamaterial patch antenna are simulated and compared. A high gain patch antenna using a single layer metamaterial superstrate with a near to zero refractive index(n)is proposed.The si...A patch antenna and our proposed metamaterial patch antenna are simulated and compared. A high gain patch antenna using a single layer metamaterial superstrate with a near to zero refractive index(n)is proposed.The simulation results provide that the gain of the proposed antenna is increased by about 7dB. Consequently,the high gain antenna can be easily obtained by using our metamaterial superstrate.展开更多
This paper presents a compact Ultra-Wideband （UWB） band-pass filter using a high-pass filter and a low-pass one, and the resonator with lumped elements. The structure of our proposed bandpass filter is very simple a...This paper presents a compact Ultra-Wideband （UWB） band-pass filter using a high-pass filter and a low-pass one, and the resonator with lumped elements. The structure of our proposed bandpass filter is very simple and the Defected Ground Structure（DGS） structure is used to get the low-pass filter characteristics. This proposed band-pass filter can be much smaller than a cascaded type filter. As a result of simulation, the insertion loss is less than 0.3 dB throughout the pass-band of 2.2 GHz- 10.6 GHz, while the return loss is more than 18 dB. And it has rejection level of 36 dB at GPS band.展开更多
A patch antenna, a metamaterial patch antenna and a proposed metamaterial patch antenna, are simulated and compared. Simulation results show that the proposed antenna can concentrate so well radiation energy into broa...A patch antenna, a metamaterial patch antenna and a proposed metamaterial patch antenna, are simulated and compared. Simulation results show that the proposed antenna can concentrate so well radiation energy into broadside direction that the antenna gain is increased and the side lobe level is decreased. Therefore, the gain of the proposed metamaterial patch antenna is improved by 2 dB than that of the ordinary metanmterial patch antenna.展开更多
基金supported by the IT R&D program of MKE/IITA.2009-F-033-02,Study of technologies for improving the RF spectrum characteristics by using the meta-electromagnetic structure.
文摘A patch antenna and our proposed metamaterial patch antenna are simulated and compared. A high gain patch antenna using a single layer metamaterial superstrate with a near to zero refractive index(n)is proposed.The simulation results provide that the gain of the proposed antenna is increased by about 7dB. Consequently,the high gain antenna can be easily obtained by using our metamaterial superstrate.
基金supported by the IT R&D program of MKE/ⅡTA:Study of technologies for improvingthe RF spectrum characteristics by using the meta-electromagnetic structure[2009-F-033-01]
文摘This paper presents a compact Ultra-Wideband （UWB） band-pass filter using a high-pass filter and a low-pass one, and the resonator with lumped elements. The structure of our proposed bandpass filter is very simple and the Defected Ground Structure（DGS） structure is used to get the low-pass filter characteristics. This proposed band-pass filter can be much smaller than a cascaded type filter. As a result of simulation, the insertion loss is less than 0.3 dB throughout the pass-band of 2.2 GHz- 10.6 GHz, while the return loss is more than 18 dB. And it has rejection level of 36 dB at GPS band.
基金supported bythe IT R&D programof MKE/ⅡTA:Study of technologies for improving the RF spectrum characteristics by using the meta-electromagnetic structurec(2009-F-033-01)
文摘A patch antenna, a metamaterial patch antenna and a proposed metamaterial patch antenna, are simulated and compared. Simulation results show that the proposed antenna can concentrate so well radiation energy into broadside direction that the antenna gain is increased and the side lobe level is decreased. Therefore, the gain of the proposed metamaterial patch antenna is improved by 2 dB than that of the ordinary metanmterial patch antenna.
