An Integrated Wideband Multifunctional Antenna Using a Microstrip Patch With Two U-Slots

Basavarajappa, Vedaprabhu; Vinoy, K. J.

doi:10.2528/pierb10050402

Cited by 30 publications

(11 citation statements)

References 16 publications

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“…Microstrip antennas have been widely used in kinds of military targets for they can be easily implemented on the surface of the target and have the characteristics of light weight, low profile as well as fitness for active integration [1,2]. However, antennas, as efficient radiators of electromagnetic field, have been dominant contributors for the overall radar cross section (RCS) of low RCS platforms.…”

Section: Introductionmentioning

confidence: 99%

An Electronically Controllable Method for Radar Cross Section Reduction for a Microstrip Antenna

Shang¹,

Xiao

Li³

et al. 2012

PIER

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Abstract-PIN diodes are used to electronically switch a rectangular microstrip antenna between the optimal radiation state and the low radar cross section (RCS) state in this paper. A useful loading circuit is proposed. The circuit is connected between the patch and the ground plane of the antenna at each loading position. The loading positions of the circuit are determined by studying magnitude distributions of the induced electric field and analyzing statistically how many times that the maximum electric field occurs in each area for each discussed incident angle. PIN diodes are equivalent to capacitances and resistances when diodes are reverse-biased and forward-biased, respectively. When the antenna is not in service and excited by an incident plane wave, obvious RCS reduction is realized. In addition, the radiation performances are well maintained when the antenna is in service for transmitting or receiving signals.

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Section: Introductionmentioning

confidence: 99%

An Electronically Controllable Method for Radar Cross Section Reduction for a Microstrip Antenna

Shang¹,

Xiao

Li³

et al. 2012

PIER

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“…These dual band slot cut MSAs are mainly reported at the fundamental patch mode. Recently by cutting two concentric U-slots inside rectangular MSA (RMSA), a dual and wide band response in two different frequency bands is reported [6]. The reported double U-slot cut RMSA covers AWS, GSM, WiMAX and WLAN frequency bands (1710 -1755 MHz, 1805 -1880 MHz, 1900 -1990 MHz, 2.110 -2170 MHz, 2400 -2500 MHz, 5150 -5350 MHz, and 5450 -5850 MHz) [6].…”

Section: Introductionmentioning

confidence: 99%

“…Recently by cutting two concentric U-slots inside rectangular MSA (RMSA), a dual and wide band response in two different frequency bands is reported [6]. The reported double U-slot cut RMSA covers AWS, GSM, WiMAX and WLAN frequency bands (1710 -1755 MHz, 1805 -1880 MHz, 1900 -1990 MHz, 2.110 -2170 MHz, 2400 -2500 MHz, 5150 -5350 MHz, and 5450 -5850 MHz) [6]. To cover these various frequency bands, dual and wide band operation is needed in 1700 -2500 MHz (BW ~ 38%) and 5150 -5850 MHz (BW ~ 14.5%) [6].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Double U-slot Cut Rectangular Microstrip Antenna

Deshmukh¹,

Ahuja²,

Mehta³

et al. 2014

IJCA

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The analysis of dual band double U-slot cut rectangular microstrip antenna is presented. The reported double U-slot cut rectangular microstrip antenna yields dual and wide band operation in 2100 and 5400 MHz frequency bands. To analyze the dual band response at above frequencies, the resonance curve plots and surface current distributions for equivalent rectangular patch and single U-slot and further double U-slot cut rectangular microstrip antennas were studied. The first Uslot primarily optimizes the position of TM 01 and TM 20 modes of the patch to realize dual and wide frequency response in 2100 MHz frequency range. Further the second U-slot optimizes the position and impedance at higher order modified modes like TM 22 , TM 31 and TM 02 modes to yields dual frequency response in 5400 MHz frequency band. Since the higher order modes are involved in dual band response, the cross polar levels in higher frequency band are higher as compared to first frequency band. The present study gives an insight into the functioning of U-slot cut patches at their lower as well as higher order frequency bands.

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“…By applying the shorting-pin loading technique a microstrip antenna treats as a quarter-wavelength structure. Several methods have been introduced to enhance the impedance bandwidth of microstrip antennas such as utilizing a thick substrate [8] and modification in the patch geometric structure like E-shaped patches [9][10][11][12], U-shaped-slot patches [13,14] and V-shaped patch [15]. Other common methods to improve the impedance bandwidth are the implementation of stacked patch antennas [16,17], L-probe feed [18,19], shorted-patch [20,21] and using shorting pins [22].…”

Section: Introductionmentioning

confidence: 99%

Ultra-Wideband Shorted Patch Antennas Fed by Folded-Patch With Multi Resonances

Malekpoor¹,

Jam²

2012

PIER B

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Abstract-Novel designs of probe-fed broadband shorted patch antennas for ultra-wideband (UWB) applications are presented in this paper. In these designs, unequal resonance arms fed by a folded patch produce multi resonances to broaden the impedance bandwidth. In the first design, the antenna consists of an asymmetric E-shaped patch, a folded-patch feed and shorting pins. This antenna is achieved by four adjacent resonances with the measured −10 dB impedance bandwidth of 76.18%. The pins are utilized to miniaturize the size of the patch. By introducing a folded ramp-shaped feed in the similar structure with the first design, a wider bandwidth with the five resonances is obtained. This improved design introduces an antenna with an impedance bandwidth of more than 110% and a considerable size reduction compared to the first antenna. The antennas present resonance tuning ability within the impedance bandwidth by varying the length of unequal arms. In addition, parametric studies are performed by investigating the effects of different key parameters on obtaining optimal designs of the proposed antennas.

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An Integrated Wideband Multifunctional Antenna Using a Microstrip Patch With Two U-Slots

Cited by 30 publications

References 16 publications

An Electronically Controllable Method for Radar Cross Section Reduction for a Microstrip Antenna

An Electronically Controllable Method for Radar Cross Section Reduction for a Microstrip Antenna

Analysis of Double U-slot Cut Rectangular Microstrip Antenna

Ultra-Wideband Shorted Patch Antennas Fed by Folded-Patch With Multi Resonances

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