Fields in the image space of symmetrical focusing reflectors

Minnett, H. C.; Thomas, B.

doi:10.1049/piee.1968.0252

Cited by 72 publications

(17 citation statements)

References 10 publications

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“…In this case, (13) By setting sin 01 6 01 and csc2 (6m/2) (2/6m)2 in (15), we can evaluate I'm analytically: 2J (kOmP) (16) (15) and (16) are consistent with earlier approximations [8], [11]. A fairly simple physical picture can be obtained from (15) and (16).…”

Section: B Large F/d Approximationsupporting

confidence: 68%

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Out-of-Band Response of Reflector Antennas

Hill

1986

IEEE Trans. Electromagn. Compat.

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Abstract-The response of reflector antennas to out-of-band frequencies has been analyzed using physical optics. A simple approximate expression has been obtained for the effective aperture, and this R t expression yields both the receiving pattern and the frequency dependence of the on-axis gain. The theory has been compared with published out-ofband measurements, and the pattern agreement is good, but the measured Index Code-IlOd/e, 16a/e, 113d/e, 114d/e.

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Section: B Large F/d Approximationsupporting

confidence: 68%

“…An infinitesimal surface-current patch of area dS at a point PI on the reflector produces electric and magnetic fields [8], [11] at the point P2:…”

Section: A Physical-optics Integrationmentioning

confidence: 99%

Out-of-Band Response of Reflector Antennas

Hill

1986

IEEE Trans. Electromagn. Compat.

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“…Many investigations on the fields in focal space of parabolic reflector antenna have been carried out [1][2][3]. Millimeter wave imaging now attracts more attentions.…”

Section: Introductionmentioning

confidence: 99%

Fields in the Focal Space of Symmetrical Hyperbolic Focusing Lens

Dou¹,

Sun²,

Tan³

1998

PIER

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“…1 and [12]. According to (1), it is clear that the same reflector operating at higher frequencies will illuminate a smaller region in the focal plane.…”

Section: Illumination Limitations Of Classical Prime-focus Fpasmentioning

confidence: 99%

Double-Reflector Configuration for Optimal Exposure of Wideband Focal-Plane Arrays With Optical Beamforming

Dubok

Al-Rawi

Tessema

et al. 2017

IEEE Trans. Antennas Propagat.

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. (2017). Double reflector configuration for optimal exposure of wideband focal plane arrays with optical beamforming. IEEE Transactions on Antennas and Propagation, 65(8), 4316-4321. [7935463]. DOI: 10.1109/TAP.2017 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Abstract-An optimized double-reflector antenna concept for a wideband focal plane array (FPA) configuration is presented for Ka-band applications with a limited scan range, e.g. ground terminals for satellite communication. The proposed reflector configuration allows to maximize the number of active array elements and minimize the actual array size during scanning. In addition, the FPA configuration has been optimized for wideband optical true-time-delay (TTD) beamforming, resulting in wideband operation from 20-40 GHz. Based on a minimum required 80 % aperture efficiency at 30 GHz, the double-reflector concept allows expanding the illuminated region of the array by a factor of 60 as compared to traditional prime-focus configurations. The proposed configuration also decreases the magnification factor M by a factor of 2.5, as compared to the double-parabolic configuration for a ±1.5 0 scan range.

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Fields in the image space of symmetrical focusing reflectors

Cited by 72 publications

References 10 publications

Out-of-Band Response of Reflector Antennas

Out-of-Band Response of Reflector Antennas

Fields in the Focal Space of Symmetrical Hyperbolic Focusing Lens

Double-Reflector Configuration for Optimal Exposure of Wideband Focal-Plane Arrays With Optical Beamforming

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