Results 51 to 60 of about 716,699 (142)

Design and Simulation of a Broad Band Retrodirective Array Element

open access: yes, 2011
In this paper, a novel dual-polarized antenna fed by microstrip line for retrodirective array is presented. The star-shaped patch is used to reduce the mutual coupling among array elements; also bandwidth can be enhanced by choosing stacked patch.
Li Ye Fang, Jian Hua Zhang, Feng Ge Hu
core   +1 more source

Two-dimensional planar passive retrodirective array

open access: yes, 2003
A simple passive microstrip array design is introduced comprising four square microstrip patches interconnected with transmission lines to form a Van-Atta retrodirective array suitable as a building block in a larger two-dimensional self-tracking array ...
Fusco, Vincent; id_orcid, Nair, Binoy
core   +1 more source

Circular Array Retrodirective Action Using a Rotman Lens Beamformer

open access: yes, 2019
We present the first use of a circular array for retrodirection covering full 360°. In particular, we discuss the attributes of the circular array when combined with Rotman beam forming.
Fusco, Vincent; id_orcid   +2 more
core   +2 more sources

A Retrodirective Array Enabled by CMOS Chips for Two-Way Wireless Communication with Automatic Beam Tracking

open access: yesEngineering
This article proposes and demonstrates a retrodirective array (RDA) for two-way wireless communication with automatic beam tracking. The proposed RDA is enabled by specifically designed chips made using a domestic complementary metal-oxide semiconductor (
Jiacheng Guo   +4 more
doaj   +1 more source

Active Retrodirective Rotman Lens Antenna for Wide-Angle RCS Enhancement

open access: yesIEEE Open Journal of Antennas and Propagation
This paper presents measurement results and analysis of an innovative active retrodirective Rotman lens antenna architecture, designed to enhance the radar cross-section (RCS) for backscattering applications.
Hanieh Kiani Amiri, Michal Okoniewski
doaj   +1 more source

Frequency offset retrodirective antenna array

open access: yesElectronics Letters, 1997
A new architecture for the Van Atta self-steering array is presented. Active antenna techniques are used to realise a compact self-steering array with enhanced retrodirective properties. The experimental performance of the array is demonstrated and a technique is described which compensates for the beam pointing error induced by antenna array element ...
S.L. Karode, V.F. Fusco
openaire   +1 more source

Investigations of Retrodirective Array Transponders.

open access: yes, 2003
Retrodirective arrays, when illuminated by an interrogator signal, transmit a signal back towards the interrogator in the same direction as the incoming signal, without any prior knowledge of the source direction.
Shah, Rachana
core  

Forming High Gain Wide Beam with NULL Steering Ability to Receive UAV Signal Based on Phased Array Antenna

open access: yesJournal of Communications Software and Systems, 2019
Successfully achieving the mission of the unmanned aerial vehicle (UAV) requiring a high gain data link between the UAV and the ground control station (GCS).
Alaa Nadim Salman   +2 more
doaj  

The implementation of wide angle and UWB retrodirective linear Van Atta array

open access: yesDiscover Applied Sciences
This paper presents the design, fabrication, and experimental validation of a broadband 1×16 Van Atta reflector array based on compact antipodal Vivaldi antennas.
Mahdi Rahanandeh   +2 more
doaj   +1 more source

Retrodirective antenna array

open access: yes, 2012
In the first part of this thesis a basic theory of retrodirective antenna arrays and their particular parts – antennas and mixers is summarized. Further, there is a basic summary of possibilities for an usage of retrodirective antenna arrays for an ...
Šindler, Pavel
core  

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