title: Compact filtering monopole patch antenna with dual-band rejection.
abstract: In this paper, a compact ultra-wideband patch antenna with dual-band rejection is proposed. The proposed antenna filters 3.3-3.8 GHz WiMAX and 5.15-5.85 GHz WLAN by respectively rejecting these bands through a C-shaped slit and a λg/4 resonator. The λg/4 resonator is positioned as a pair, centered around the microstrip line, and a C-type slit is inserted into an elliptical patch. The impedance bandwidth of the proposed antenna is 2.9-9.3 GHz, which satisfies the bandwidth for ultra-wideband communication systems. Further, the proposed antenna provides dual-band rejection at two bands: 3.2-3.85 and 4.7-6.03 GHz. The radiation pattern of the antenna is omnidirectional, and antenna gain is maintained constantly while showing -8.4 and -1.5 dBi at the two rejected bands, respectively.
authors.affiliation: Department of Information and Communication Engineering, Chosun University, Gwangju, Republic of Korea.
authors.forename: Sun-Woong
authors.initials: SW
authors.lastname: Kim
authors.affiliation: Department of Information and Communication Engineering, Chosun University, Gwangju, Republic of Korea.
authors.forename: Dong-You
authors.initials: DY
authors.lastname: Choi
keywords: Dual-band rejection; Monopole patch antenna; UWB; WLAN; WiMAX