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2. Design of a Planar Ultrawideband Antenna With a New Band-Notch Structure

Author

Shyh-Jong Chung, I-Young Tarn, Ching-Wei Ling, and Chong-Yu Hong

Subjects
Patch antenna, Physics, business.industry, Antenna measurement, Antenna efficiency, law.invention, Radiation pattern, Microstrip antenna, Optics, law, Dipole antenna, Helical antenna, Electrical and Electronic Engineering, business, Monopole antenna, Computer Science::Information Theory
Abstract

A novel planar ultrawideband (UWB) antenna with band-notched function. The antenna consists of a radiation patch that has an arc-shaped edge and a partially modified ground plane. The antenna that makes it different from the traditional monopole antenna is the modification in the shape of ground plane, including two bevel slots on the upper edge and two semicircle slots on the bottom edge of the ground plane. These slots improve the input impedance bandwidth and the high frequency radiation performance. With this design, the return loss is lower than 10 dB in 3.1-10.6 GHz frequency range and the radiation pattern is highly similar to the monopole antenna. By embedding a pair of T-shaped stubs inside an elliptical slot cut in the radiation patch, a notch around 5.5 GHz WLAN band is obtained. The average gain is lower than -18 dBi in the stopband, while the patterns and the gains at frequencies other than in the stopband are similar to that of the antenna without the band-notched function.

Published
2007

3. Design of a Planar Ultrawideband Antenna With a New Band-Notch Structure.

Author

Chong-Yu Hong, Ching-Wei Ling, I-Young Tarn, and Shyh-Jong Chung

Subjects
*ANTENNAS (Electronics), *ANTENNA radiation patterns, *ULTRA-wideband antennas, *ULTRA-wideband devices, *ELECTROMAGNETIC fields, *ELECTRIC fields, *DATA transmission systems, *ANTENNA design, *TELECOMMUNICATION
Abstract

A novel planar ultrawideband (UWB) antenna with band-notched function. The antenna consists of a radiation patch that has an arc-shaped edge and a partially modified ground plane. The antenna that makes it different from the traditional monopole antenna is the modification in the shape of ground plane, including two bevel slots on the upper edge and two semicircle slots on the bottom edge of the ground plane. These slots improve the input impedance bandwidth and the high frequency radiation performance. With this design, the return loss is lower than 10 dB in 3.1-10.6 GHz frequency range and the radiation pattern is highly similar to the monopole antenna. By embedding a pair of T-shaped stubs inside an elliptical slot cut in the radiation patch, a notch around 5.5 GHz WLAN band is obtained. The average gain is lower than - 18 dBi in the stopband, while the patterns and the gains at frequencies other than in the stopband are similar to that of the antenna without the band-notched function. [ABSTRACT FROM AUTHOR]

Published
2007
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