An Ultra-Wideband Twin-Patch Monopole Antenna With Band-Rejection Characteristic

Abstract

To suppress electromagnetic interference at 5.5-GHz WLAN (5.15-5.825 GHz) band operation, a novel ultra-wideband (UWB) design of a slotted twin-patch monopole antenna with a band-rejection characteristic is presented. The proposed antenna with a simple structure has a large impedance bandwidth, defined by 10-dB return loss, covering the range from 2.95 to 10.85 GHz, and a tunable cutoff band from 5.18 to 6 GHz for band-operation suppression. Measured monopole-like radiation pattern and in-band average gain of about 2.3 dBi have also been obtained, simultaneously, with good agreement to the simulated results.

Design of an Uwb Antenna With Adjustable Rejection Bandwidth Using Novel Dual-T Square Resonator

“…Meander Tshaped patch and stepped impedance structure [7,8] can also be used for band-rejection applications. Additionally, embedding slots in radiating patch or in ground plane [9][10][11][12][13][14] is a effective method to obtain band-rejection characteristic. Bandwidth enhanced antennas [15,16] are also be researched.…”

Compact Filtering Antenna Based on Dumbbell-Shaped Resonator

“…The function of the antenna is receiving and transmitting signal, and the bandpass filter is used to filter spurious signals. In general, these two components are designed separately [1][2][3], but many scholars start to study the co-design method and other methods to realize filtering antennas [4][5][6][7][8][9][10][11][12][13][14][15]. Filtering antennas not only improve the performance of communications systems, but also minimize the total size.…”