Journal Article10.1049/EL:20030302
Ka-band reflectarray using ring elements
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TL;DR: In this paper, a simple ring structure to realize a Ka-band circularly polarised microstrip reflectarray is presented, with rotation techniques employed to focus the reflected wave at a focal point.
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Abstract: A simple ring structure to realise a Ka-band circularly polarised microstrip reflectarray is presented. With rotation techniques employed to focus the reflected wave at a focal point, a 0.5 m right-hand circularly polarised microstrip reflectarray is developed and tested at 31.75 GHz resulting in 50% aperture efficiency. The cross-polarisation levels measured are 40.7 dB down at broadside, showing the validity of the structure.
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Citations
A C/ka dual frequency dual Layer circularly polarized reflectarray antenna with microstrip ring elements
TL;DR: In this article, a 0.5-m right-hand circularly polarized planar reflectarray antenna is designed using microstrip ring elements of variable rotations to achieve a cophasal beam at broadside.
171
A high efficiency offset-fed X/ka-dual-band reflectarray using thin membranes
TL;DR: In this article, a dual-band reflectarray antenna for future space inflatable structures with thin membranes is presented, where foam layers are inserted below the X and Ka band membranes, allowing broadband CP performance at both bands.
113
Comparison of frequency-selective screen-based linear to circular split-ring polarisation convertors
TL;DR: In this paper, the use of periodic arrays of freestanding slot frequency-selective screens (FSS) as a means for generating circularly polarised signals from an incident linearly polarised signal at normal incidence to the structure is presented.
101
An FSS-Backed 20/30-GHz Dual-Band Circularly Polarized Reflectarray With Suppressed Mutual Coupling and Enhanced Performance
TL;DR: In this paper, a high-efficiency wideband frequency selective surface (FSS)-backed 20/30-GHz dual-band circularly polarized reflectarray antenna is presented, where variable element size and the element rotation angle phasing techniques are utilized in the multilayer reflectarray element designs at the Ka receive and transmit bands, respectively.
95
An Offset-Fed X-Band Reflectarray Antenna Using a Modified Element Rotation Technique
TL;DR: An X-band circularly polarized reflectarray antenna with an offset feed is designed, fabricated, and measured in this paper, which uses split square ring elements with a modified element rotation technique for phase compensation, which allows the rotation of the slot instead of the element itself.
95
References
A Ka-band microstrip reflectarray with elements having variable rotation angles
John Huang,Ronald J. Pogorzelski +1 more
TL;DR: In this article, a rotational element was used to achieve cophasal far-field radiation for a circularly polarized microstrip reflectarray with elements having variable rotation angles, which is the largest reflectarray ever developed using microstrip patches.
620
Analysis of a reflectarray antenna using microstrip patches of variable size
David M. Pozar,T.A. Metzler +1 more
TL;DR: In this article, the phase control is achieved simply by adjusting the resonant length of the patch elements, which can be computed as a function of patch size and a design curve given the change in patch size for a desired reflected field phase shift.
492
Design and performance of a microstrip reflectarray antenna
TL;DR: In this design procedure, the microstrip reflectarray has been shown to be an effective linear array capable of beam switching and dual polarization.
238
Patent
Microstrip reflect array for satellite communication and radar cross-section enhancement or reduction
Hussain Ali Haddad,John Wayne Hanlen,Robert E. Munson +2 more
- 13 Sep 1983
TL;DR: In this article, a flat reflectarray is associated with a primary r.f. transmitter/receiver structure disposed at a focal area or spot of the reflectarray having an appropriately phased aperture (e.g., parabolic).
149
FLAPS: conformal phased reflecting surfaces
Anand Kelkar
- 12 Mar 1991
TL;DR: In this paper, a flat parabolic surface (FLAPS) is proposed for the use of low-cost fabrication techniques to perform various collimating reflector functions, independently of any specific geometric shape, such as would be required with conventional reflectors.
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