Evaluation of frequency‐selective reflector antenna systems

Wu, Te‐Kao; Lee, S. W.; Zimmerman, M.

doi:10.1002/mop.4650060307

Cited by 8 publications

(3 citation statements)

References 2 publications

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“…The use of frequency selective surfaces has been successfully proven as a potential means to increase the communication capabilities for satellites [1]. In Voyager, Galileo, and Cassini space missions, the dual‐reflector antennas with a frequency selective surface (FSS) subreflector made it possible to share the main reflector among different frequency bands [2–5].…”

Section: Introductionmentioning

confidence: 99%

A novel broad and multiband frequency selective surface

Ray¹,

Kahar²,

Sarkar³

et al. 2012

Micro & Optical Tech Letters

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Simulated theoretical results and experimental verifications are presented for a Frequency selective surface with slotted, perfectly conducting square patch elements.The frequency selective surface (FSS) structure acts like a band‐reject filter having three broad stop bands in parts of C, X, and Ku band. Due to symmetrical nature of the design, the FSS is insensitive to variations of RF incidence angle for 90° rotations of the FSS. Simulated theoretical investigations are done by Ansoft Designer® software. Experimental investigation is performed using standard microwave test bench. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1353–1355, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26843

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Section: Introductionmentioning

confidence: 99%

A novel broad and multiband frequency selective surface

Ray¹,

Kahar²,

Sarkar³

et al. 2012

Micro & Optical Tech Letters

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“…As these grids can be designed to resonate at specified frequencies, the FSS will reflect waves at these frequencies and pass waves at other frequencies. Experimental investigations on arrays of elements of different shapes like Jerusalem cross [8], annular ring [9], and square loop [10] were carried out previously. These different structures were designed to resonate at a single frequency.…”

Section: Introductionmentioning

confidence: 99%

An array of stagger‐tuned printed dipoles as a broadband frequency selective surface

Sarkar¹,

Sarkar²,

Das³

et al. 2002

Micro & Optical Tech Letters

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In addition, a connection metal line of 1 mm width was printed between the two side-feeds. This connection metal line mainly serves as a delay line in the proposed antenna to provide a 90°phase difference between the two side-feeds. This desired phase difference can be obtained by adjusting the distance (1.5 mm in this study) between the connection metal line and the ground conducting patch in the proposed design. Also notice that two small notches were cut near points A and B in the ground conducting patch to avoid the shortcircuiting of the two side-feeds to the ground.To excite the proposed antenna with right-hand CP operation for GPS operation, a 50 ⍀ microstrip feed line printed on the test circuit board is connected to the side-feed at point A. In this case, the side-feed at point A will have a 90°phase lead, as compared to the side-feed at point B. This condition can lead to successful excitation of two orthogonal resonant modes of equal amplitudes and 90°phase difference for right-hand CP operation. Also note that, if left-hand CP operation is desired for some other applications, the microstrip feed line can be connected to the side-feed at point B. In this case, the side-feed at point A will have a 90°phase lag, as compared to the side-feed at point B, thereby making possible the generation of a left-hand circularly polarized wave. EXPERIMENTAL RESULTS AND DISCUSSIONABSTRACT: In this paper, the frequency selective property of an array of rectangular dipole microstrip patches resonant at three different ABSTRACT: In this paper a birefringence interferometer is used for detecting both change in reflectivity and surface deformation caused by photothermal effect or thermal waves excited by anyother pump source. The instrument is very simple, with high immunity against noise and sensitivity.

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“…Accordingly, these FSSs can be applied in radome, filter, dichroic subreflector, directivity enhancement, and radar cross section (RCS) reduction. [3]- [6].In this paper, we have achieved a novel FSS structure on a double metallic-layer polytetrafluoroethylene (PTFE),substrate having two metallic planes with dual [7]- [11] pass bands for WLAN application, at 2.4GHz and 5.2GHz. IEEE 802.11b Wireless Local Area Network (WLAN) [12] standards use the same unregulated radio signaling frequency, 2.4 GHz as the original 802.11 standard.…”

mentioning

confidence: 99%