Ultra-Wideband Tapered Slot Antenna Array with Parallel Plate Waveguides

2006 ◽  
Author(s):  
S. Yamaguchi ◽  
H. Miyashita ◽  
K. Nishizawa ◽  
S. Makino
Keyword(s):  
Antenna Array ◽  
Parallel Plate ◽  
Ultra Wideband ◽  
Slot Antenna

scholarly journals Reconfigurable 2×1 CPW-Fed Rectangular Slot Antenna Array (RSAA) Based on Graphene for Wireless Communications

2021 ◽  
Vol 36 (6) ◽  
pp. 788-795
Author(s):  
Dalia Elsheakh ◽  
Osama Dardeer
Keyword(s):  
Wireless Communications ◽  
Antenna Array ◽  
Coplanar Waveguide ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Average Gain ◽  
Rectangular Slot ◽  
High Data ◽  
Peak Gain

This article presents a 2×1 CPW ultra wideband rectangular slot antenna array (UWB-RSAA) with a modified circular slot shape to support a high data rate for wireless communications applications. The proposed antenna array dimensions are 0.7λ×0.8λo×0.064λo at the resonant frequency 1.8 GHz. It is fabricated on Rogers RO4003 substrate and fed by using a coplanar waveguide (CPW). A graphene layer is added on one side of the substrate to realize frequency reconfigurability and improve the array gain. The proposed array acquires -10 dB impedance bandwidth of the RSAA that extends from 1.7 GHz to 2.6 GHz, from 3.2 to 3.8 GHz, and from 5.2 GHz to 7 GHz. The proposed array achieved a realized peak gain of 7.5 dBi at 6.5 GHz at 0 Volt bias with an average gain of 4.5 dBi over the operating band. When the graphene bias is increased to 20 Volt, the antenna bandwidth extends from 1 GHz to 4 GHz and from 5 to 7 GHz with a peak gain of 14 dBi at 3.5 GHz and an average gain of 7.5 dBi. The linearly polarized operation of the proposed array over the operating bands makes it suitable for short-range wireless communications .

Tapered slot antenna array with parallel plate waveguides

2003 ◽  
Author(s):  
S. Yamaguchi ◽  
K. Yamashita ◽  
K. Nishizawa ◽  
H. Fushimi ◽  
H. Miyashita ◽  
...  
Keyword(s):  
Antenna Array ◽  
Parallel Plate ◽  
Slot Antenna

Ultra-Wideband Tapered Slot Antenna Arrays with Parallel-Plate Waveguides

2010 ◽  
Vol E93-B (5) ◽  
pp. 1248-1255 ◽  
Author(s):  
Satoshi YAMAGUCHI ◽  
Hiroaki MIYASHITA ◽  
Toru TAKAHASHI ◽  
Masataka OTSUKA ◽  
Yoshihiko KONISHI
Keyword(s):  
Antenna Arrays ◽  
Parallel Plate ◽  
Ultra Wideband ◽  
Slot Antenna

scholarly journals A Large Aperture UWB Antenna Array for Real Beam Radar Imaging

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Chao-Hsiang Liao ◽  
Dau-Chyrh Chang
Keyword(s):  
Antenna Array ◽  
Horn Antenna ◽  
Radar Imaging ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Uwb Antenna ◽  
Large Aperture ◽  
Receiving Antenna ◽  
Transmitting Antenna ◽  
Double Ridge

The development of four-element ultra-wideband (UWB) comb taper slot antenna array with 18 cm element spacing for real beam radar imaging is described. The four-element UWB array system with optimum element spacing is analyzed by energy pattern. A wideband double ridge horn antenna is used as the transmitting antenna, the developed large aperture UWB array is used as the receiving antenna. The transmitting antenna and the receiving antenna are combined with impulse time domain measurement system to achieve real beam radar imaging. The receiving impulse signals at various positions are processed by the time delay and sum algorithm. The examples of several aluminum cans have been verified in the resolution and compared with using the UWB array as a receive antenna and the double ridge horn as a transmit antenna in the test setup. The crossrange resolution of UWB antenna array is better than wideband double ridge horn antenna because the beam width of UWB array is narrower.

scholarly journals Reconfigurable 2×1 CPW-Fed Rectangular Slot Antenna Array (RSAA) Based on Graphene For Wireless Communications

2021 ◽  
Author(s):  
Dalia Elsheakh ◽  
Osama Dardeer
Keyword(s):  
Wireless Communications ◽  
Antenna Array ◽  
Coplanar Waveguide ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Average Gain ◽  
Rectangular Slot ◽  
High Data ◽  
Peak Gain

Abstract This article presents a 2×1 CPW ultra wideband rectangular slot antenna array (UWB-RSAA) with modified circular slot shape to support high data rate for wireless communications applications. The proposed antenna array dimensions are 0.7λo×0.8λo×0.064λo at the resonant frequency 1.8 GHz and it is fabricated on a commercially available rogers RO4003 substrate (with εr = 3.5), which is fed by using coplanar waveguide (CPW). A graphene layer is added on the other side of the substrate to achieve frequency reconfigurable and improve the antenna array gain. The -10 dB impedance bandwidth of the RSAA extends from 1.7 GHz to 2.6 GHz, from 3.2 to 3.8 GHz and from 5.2 GHz to 7 GHz with peak gain of 7.5 dBi at 6.5 GHz at 0 Volt bias over the operating band with average gain of 4.5 dBi. When the graphene bias is increased to 20 Volt, the antenna bandwidth extend from 1 GHz to 4 GHz and from 5 to 7 GHz with array peak gain 14 dBi at 3.5 GHz and average gain 7.5 dBi. The proposed array achieved linear polarized behaviour over the operating bands to be suitable for short range UWB wireless communications and object detection. All simulation carried out using 3D high frequency structure simulator (HFSS) Ansys ver. 15.

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