2014
DOI: 10.1017/s1759078714000488
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Azimuthally periodic wedge-shaped metal vane loaded circular ring frequency selective surface

Abstract: Azimuthally periodic wedge-shaped metal vane loaded circular ring frequency selective surface garima bharti 1 , kumud ranjan jha 2 , ghanshyam singh 1 and rajeev jyoti 3In this paper, the analysis and simulation of a novel geometrical structure of the frequency selective surface (FSS), which has been achieved through the conductive loading of the simple circular ring with wedge-shaped metal vanes has been discussed. The electrical performance and behavior of the proposed structure have been studied in Ku band … Show more

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Cited by 8 publications
(5 citation statements)
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“…An equivalent circuit based on a transmission line model as a lumped network (including RLC ) was used to model the absorber and derive the equivalent reflection and transmission coefficients. A crucial question was whether mutual coupling occurred between different resonance modes . The resonant absorptions of the single square, ring, and cross structures were examined by simulation.…”
Section: Resultsmentioning
confidence: 99%
“…An equivalent circuit based on a transmission line model as a lumped network (including RLC ) was used to model the absorber and derive the equivalent reflection and transmission coefficients. A crucial question was whether mutual coupling occurred between different resonance modes . The resonant absorptions of the single square, ring, and cross structures were examined by simulation.…”
Section: Resultsmentioning
confidence: 99%
“…From the mode-matching technique [1], [13], it is illustrated that at the resonance frequency, the perimeter of a square loop and the mean circumference of circular ring FSS are approximately equal to the integer multiple of the operating wavelength. In other words, for the same value of p, d and w, the circular ring FSS resonates at a higher frequency as compared to that of the SSLFSS, which has been discussed in Reference [17].…”
Section: Theory Of Operation and Unit-cell Configurationmentioning
confidence: 89%
“…For the transformation of synthesis technique of SSLFSS on the circular ring FSS, it is required to resonate the circular ring FSS at the same frequency as that of the SSLFSS, which is achieved by enhancing its d and p. However, this enlargement deteriorates the angular stability of the circular ring FSS and results in the larger size [1], [17]. In order to overcome this limitation and to achieve better angular/polarization stability, we have inserted the four pairs of parallel straight slots of length (l) in the outer circular ring FSS, which has been shown in Figure 1(a).…”
Section: Theory Of Operation and Unit-cell Configurationmentioning
confidence: 99%
See 1 more Smart Citation
“… where P SL , C Cir , f r 1 , and f r 2 are the perimeter of the single square loop, circumference of the circular ring, resonance frequency of the single square loop, and resonance frequency of the circular ring FSS structure, respectively. From equations (1) and (2), it is illustrated that the resonance frequency of classical circular ring FSS structure is greater than that of SSLFSS structure, which has also been validated through commercial simulators such as CST Microwave Studio and Ansoft HFSS as discussed in [12] because for the same values of the p, w , and d , the circumference of the circular ring unit-cell is small as compared with the perimeter of the square loop unit-cell FSS structure. In addition to this, the ratio of perimeter of square loop ( P SL ) to the circumference of circular ring ( C cir ) is approximately equal to the ratio of the resonant frequency of the circular ring to that of the square loop.…”
Section: Problem Formulationmentioning
confidence: 99%