Results 41 to 50 of about 132 (115)
Performance analysis and simulation of the SPS reference phase control system [PDF]
, 1980 The major elements required in the operation of an SPS which employs retrodirectivity as a means of pointing the beam to Earth include the spacetenna, the rectenna, and the pilot signal transmitter. The phase control system is faced with several problems:
Lindsey, W. C., Chie, C. M.
core
Platform echo and cross‐eye jamming against active‐passive composite monopulse radars
IET Radar, Sonar &Navigation, Volume 18, Issue 11, Page 2134-2143, November 2024.In this paper, platform echo and cross‐eye jamming signals are jointly considered to analyse the jamming performance on active‐passive composite monopulse radars (APCMR). In order to ensure the jamming performance on both active and passive radars in APCMR, a guideline for the setting of jammer parameters is proposed based on numerical simulations ...
Dong Li +4 more
wiley +1 more source
Design of Dual Polarized Retrodirective Metasurfaces
, 2018 International audienceIn this paper, we introduce the design of retrodirective metasurfaces following the generalized phase law of reflection for dual polarizations TM and TE at a given incident angle at 14.7GHz. Two different unit cells (patch and cross)
Seetharamdoo, Divitha +3 more
core +1 more source
Self-Steering Arrays For Wireless Communication Networks [PDF]
, 2004 A Retrodirective array has the unique property in that when it is interrogated, the array automatically points its beam toward the interrogator. Unlike more complicated arrays that require digital signal processing, the retrodirective array achieves self-
Shiroma, Grant S.
core +1 more source
Nanophotonics, Volume 13, Issue 19, Page 3737-3748, August 2024.Abstract Retroreflectors can scatter the arbitrarily incident wave back to incoming direction, demonstrating great potential in wireless communication. However, there are limitations in adaptive retroreflection and polarization modulation with the existing retroreflectors. In this paper, a novel metasurface array with a reconfigurable transmission line
Wen Yue Wei +4 more
wiley +1 more source
, 2020 The growing popularity of metasurfaces and their exceptional physical phenomena has gained remarkable interest in terms of propagation and electromagnetic wave control.
Seetharamdoo, Divitha, Kalaagi, Mohammed
core +1 more source
Channel estimation for backscatter communication systems with retrodirective arrays
IET Communications, Volume 18, Issue 11, Page 671-678, July 2024.Here, the authors consider the tag is equipped with retrodirective arrays to improve reliability and enhance communication range. The probability density function of channel coefficients is then derived. Next, a channel estimator based on Bayesian theory is proposed to acquire the modulus values of channel parameters and calculate its Bayesian Cramer ...
Yunping Mu +6 more
wiley +1 more source
Co‐operating retrodirective system
IET Microwaves, Antennas & Propagation, 2013 Practical demonstration of the operational advantages gained through the use of a co‐operating retrodirective array (RDA) basestation and Van Atta node arrangements is discussed. The system exploits a number of inherent RDA features to provide analogue real time multifunctional operation at low physical complexity.
Fusco, Vincent, Chan, Pak
openaire +1 more source
, 2000 -A planar antenna array reflector with retrodirectivity in both the -plane and the -plane is analyzed and demonstrated at band. The reflector consists of six pairs of slot-coupled patch antennas arranged using the Van Atta approach.
Wen-Jen Tseng +2 more
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