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This microstrip dual-band bandpass filter consists of double open-ended resonators and dumbbells designed by using the concept of symmetry. Two transmissions zero appear by zero-degree feed position. The proposed bandpass filter is created to support WLAN applications at 2.45 GHz and 5.20 GHz, respectively. Both insertion losses are greater than −0.9 dB and the return losses are below −18 dB. The...
This work presents a high-gain double reflectors microstrip-fed slot antenna for WLAN and WiMAX applications as the IEEE 802.11b/g and IEEE 802.11a standards. The antenna is composed of a microstrip-fed slot with a complementary stub on a single substrate and a pair of reflectors. The reflectors are exploited to achieve bi-directional radiation patterns which is suitable for using in buildings or...
A flower-shaped stub slot antenna with dual band-notched for ultra-wideband (UWB) applications is presented in this paper. The proposed antenna can cover UWB spectrum with dual band-notched characteristics. The two notched bands are designed by using the parasitic square C-shaped Strip and the ellipse C-shaped slot, which can reject the frequency band of 3.2 to 3.7 GHz and 5.13 to 5.9 GHz. Furthermore,...
An integrated slot antenna with a very low profile of 4 mm to the top edge of the notebook metal cover for WLAN operation is proposed. The antenna was integrated in the top cover and fed by soldering the cable across the slot. The antenna design consisted of two parallel-connected slot portions with the dimensions 80 mm and 2 mm. The larger slot portion contributed to both half- and the one-wavelength...
This paper proposes a dual-band conformal antenna which resonates at lower WLAN (2.4 GHz) and high WLAN (5.8 GHz) frequency bands. And for both the bands, the conformal antenna has perfect omnidirectional radiation pattern. The proposed antenna is conformed onto a cylindrical structure of radius 200 mm. And the electromagnetic model and parametric analysis of the proposed antenna is developed in HFSS...
In this paper, a circular ring is used to excite exponential horn antenna presented for bridging outdoor wireless LAN applications. The advantage of this structure does not require a waveguide feeding system. The purpose of this antenna design is to achieve unidirectional antenna which is operated at the center frequency of 2.45 GHz (2.40 GHz to 2.484 GHz). The characteristics of the proposed antenna...
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