Satellite communications relay system using a retrodirective space antenna

Gruenberg, Elliot L.; Johnson, C.M.

doi:10.1109/tap.1964.1138194

Cited by 23 publications

(9 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to Van Atta theory, the pairs are connected with separated number. The RCS can be defined as [3] i s P P r 2 4   (1) where σ is the radar cross section, P i is the power density of the incident plane wave, P s is the reflected power density at a certain distance, and r is the distance from the transponder to the receiver.…”

Section: Discussionmentioning

confidence: 99%

The study on a new type of low-profile and passive radar retro-reflector

Li¹,

Yao²,

Chen³

et al. 2014

Proceedings of 2014 3rd Asia-Pacific Conference on Antennas and Propagation

View full text Add to dashboard Cite

Nowadays, radar retro-reflector has been widely applied as a decoy, to seduce an incoming assault away from the target, or towards a less vulnerable part of it to communication systems and remote identification as their characteristics of low-profile, low-cost and Radar Cross Section (RCS) enhancement. A passive retro-reflector is a device which can be used to be reflected most of the energy incident upon it in the direction of the in-going wave. The Luneberg lens and a sphere are widely used as their self characteristics. In this paper one of the retro-reflector, is paid more attention as time goes by, is introduced. The retroreflector is consist of patch antenna arrays and feeding system and can be defined as Retro-directive arrays (RDA). It has a very simple structure and can focus outgoing waves back at the direction of incident waves. The character of the reradiation pattern affected by the size and type of patch and width and length of feeding network related are optimized by the HFSS. The final results are validated experimentally.

show abstract

Section: Discussionmentioning

confidence: 99%

The study on a new type of low-profile and passive radar retro-reflector

Li¹,

Yao²,

Chen³

et al. 2014

Proceedings of 2014 3rd Asia-Pacific Conference on Antennas and Propagation

View full text Add to dashboard Cite

show abstract

“…0018-926X/$26.00 © 2011 IEEE The input port at the primary focus G corresponds to a boresight directed beam and the beamports at the secondary foci F1 and F2 correspond to beams tilted , which is the specified scan range. Similarly exciting an input port located between the focal points produces a wavefront within which, for the th beamport, provides a primary beam with a tilt angle (1) The array feedline lengths are not equal; their purpose is to correct phase errors and produce a plane wavefront across the radiating elements. Design equations given in [9] specify the contours on the beam and array side of the lens and the relative lengths of the correction lines for a given range of scan angles.…”

Section: Theory Of Operationmentioning

confidence: 99%

“…Moreover, unlike phase arrays and mechanically scanned antennas, retrodirective systems provide rapid beamsteering automatically by removing the need to use computationally intensive digital signal processing, hardware phase shifters or heavy power-hungry motors. This technology therefore offers a viable alternative for many applications, including high-gain satellite links [1], solar power transmission from satellites [2], microwave tracking systems and transponders [3], radar systems [4], radar cross-section enhancement [5], and spatial-division multiple access for mobile communications [6].…”

Section: Introductionmentioning

confidence: 99%

Rotman Lens-Based Retrodirective Array

Christie

Cahill

Buchanan

et al. 2012

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

A new type of broadband retrodirective array, which has been constructed using a microstrip Rotman lens, is presented. Automatic tracking of targets is obtained by exploiting the conjugate phase response of the beamforming network which is exhibited when the input ports are terminated with either open or short circuits. In addition, the true time-delay property of the Rotman lens gives broadband operation of the self-tracking array when used in conjunction with Vivaldi antennas. The simulated and measured bistatic and monostatic radar cross-section (RCS) patterns of a structure consisting of 13 beamports and 12 array ports are presented at frequencies in the range 8-12 GHz. Significantly enhanced RCS within the scan coverage 40 is demonstrated by comparing the retrodirective behavior of a 12-element Vivaldi array terminated with and without the Rotman lens.

show abstract

“…This difficulty is readily overcome by changing polarization, frequency, or modulation, or by adding amplification. Gruenberg and Johnson (1964) use a balanced mixer, where the LO frequency is close to the signal frequency. Steady interest in these arrays resulted in a March 1964 special issue of the IEEE AP Transactions.…”

Section: History Of Retrodirective Arraysmentioning

confidence: 99%

Reflectarrays and Retrodirective Arrays

Hansen

2009

Phased Array Antennas

View full text Add to dashboard Cite

Satellite communications relay system using a retrodirective space antenna

Cited by 23 publications

References 7 publications

The study on a new type of low-profile and passive radar retro-reflector

The study on a new type of low-profile and passive radar retro-reflector

Rotman Lens-Based Retrodirective Array

Reflectarrays and Retrodirective Arrays

Contact Info

Product

Resources

About