IJBTT

A Microstrip-Fed UWB Antenna for WCDMA and X-Band Applications

	International Journal of Computer Trends and Technology (IJCTT)
	© 2017 by IJCTT Journal
	Volume-48 Number-1
	Year of Publication : 2017
	Authors : Alaa desher farhood, Maham kamil naji, Dr.Seham ahmed hashem
	DOI :  10.14445/22312803/IJCTT-V48P102

Alaa desher farhood, Maham kamil naji, Dr.Seham ahmed hashem "A Microstrip-Fed UWB Antenna for WCDMA and X-Band Applications". International Journal of Computer Trends and Technology (IJCTT) V48(1):5-10, June 2017. ISSN:2231-2803. www.ijcttjournal.org. Published by Seventh Sense Research Group.

Abstract -
In this paper, a novel ultra-wideband (UWB) antenna is proposed. This proposed antenna is microstrip-fed in design. The proposed antenna has dual band characteristics for Wideband Code Division Multiple Access ,WCDMA ( 1.9-2.1 GHz) at the center frequency of 2 GHz and X-band (8-12 GHz) with resonant frequency of 10 GHz. The design of proposed structure comprises of a rectangular patch and two inverted and identical rectangular strips. A rectangular patch design is employed to operate antenna on UWB frequency band from 3.1-10.6 GHz. The dimensions of proposed antenna is also minimized to increase the antenna gain and high impedance bandwidth. On the back side of antenna, a ground plane is designed. The ground structure is modified and connected with two inverted L-shaped strips to obtain the dual band characteristics resonant at 2 GHz and 10 GHz respectively. The proposed antenna is designed using FR4 substrate of compact dimension 25 mm × 25 mm × 1.6 mm. The microstrip antenna is fed by 50 ?. The simulated results of proposed antenna are good and shows neary omnidirectional radiation pattern, constant gain, small group delay. The return loss (S11) is < -10 dB and VSWR is also < 2 throughout the UWB band. At 2 GHz and 10 GHz resonant frequencies, the S11 are -21dB and -23dB respectively. The designed antenna configuration is simulated and analysed by using high frequency structure simulator (HFSS).

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Keywords
Ultra-wideband (UWB), WCDMA, X-band, Microstrip antenna, Antenna gain, Return loss, HFSS, VSWR.