Results 141 to 150 of about 409 (184)

Design of Wideband Reflectarray Antennas

2020 14th European Conference on Antennas and Propagation (EuCAP), 2020
The method providing bandwidth increasing of reflect array antennas is proposed. The main idea of this method is to compensate phase errors by means of the spatial separation of layers with reflective elements. A full-metal reflectarray antenna has been designed with the use of the proposed method, manufactured and tested.
Yuri G. Antonov, Mikhail I. Sugak, Svyatoslav V. Ballandovich, Gregory A. Kostikov, Liubov M. Liubina   +4 more
openaire   +1 more source

Dual-Frequency Folded Reflectarray Antenna

IEEE Antennas and Wireless Propagation Letters, 2013
Design and experimental results of a dual-frequency folded reflector antenna are presented. With an effective diameter of 180 mm and a depth of 60 mm, gain values of 25 and 30 dB at 20 and 30 GHz, respectively, have been achieved. Beamwidths are 6.2° at 20 GHz and 3.7°/4° at 30 GHz.
Jinjing Ren, Wolfgang Menzel
openaire   +1 more source

Patents on Reconfigurable Reflectarray Antennas

Recent Patents on Electrical Engineeringe, 2009
Reflectarray antennas have attracted significant attention due to a number of attractive properties, such as low cost, and conformal deployment capability. In addition, the drive towards flexible radio transceivers, enabling beamforming and multi-beam operation has spurred significant interest towards the design of antenna elements and antenna arrays ...
Apostolos Georgiadis, Ana Collado, Julien Perruisseau-Carrier   +2 more
openaire   +1 more source

Microstrip Reflectarray Antenna Program.

1977
Abstract : Results of a study to determine the feasibility and design limitations of a microstrip reflectarray antenna are presented. This antenna, which has been proposed as a means to provide potential low-cost corporate-fed phased arrays, utilizes microwave integrated circuit techniques to integrate the radiating element, phase-shifter components ...
James P. Montgomery, Frank Opp
openaire   +1 more source

Characterizing reflectarray antennas radiation performance

IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450), 2004
A reflectarray utilizes key features of reflector antennas and phased array antennas by allowing a feed to illuminate its planar main reflector's array elements to produce a collimating beam. Consequently, this mechanism eliminates the feed-network as required in phased-array antennas.
B. Khayatian, Y. Rahmat-Samii
openaire   +1 more source

Micromachined reconfigurable planar reflectarray antenna

2nd European Conference on Antennas and Propagation (EuCAP 2007), 2007
In applications such as target tracking the ability to steer the radiation pattern produced by an antenna is required. This can be achieved using reconfigurable reflector antennas based on a planar array of dipole elements immersed in a circularly polarised field.
V. Srigengan, S.J.N. Mitchell, V.F. Fusco, H.S. Gamble   +3 more
openaire   +1 more source

Reflectarrays for satellite telecommunication antennas

2nd European Conference on Antennas and Propagation (EuCAP 2007), 2007
The objective of this paper is to highlight some of the issues related to the development of Reflectarrays for satellite telecommunication antennas. (6 pages)
H. Legay, B. Salome, E. Labiole, M.-A. Milon, D. Cadoret, R. Gillard, R. Chaharmir, J. Shaker   +7 more
openaire   +3 more sources

Novel Photonically-Controlled Reflectarray Antenna

IEEE Transactions on Antennas and Propagation, 2006
A novel method for generating a reconfigurable reflectarray based on the creation of photoinduced plasma inside the semiconductor substrate of a reflectarray is presented in this paper. A reflectarray antenna prototype is fabricated and measured to demonstrate the validity of the design methodology.
M.R. Chaharmir, J. Shaker, M. Cuhaci, A. Sebak   +3 more
openaire   +1 more source

A six-band reflectarray antenna

2009 IEEE Antennas and Propagation Society International Symposium, 2009
This paper presents a reflectarray configuration which supports the operation of six frequency bands. The proposed reflectarray has two substrate layers and each layer accommodates array elements of three frequency bands. Reflection phase curves of the array elements of different frequency bands are simulated.
Seong-Won Oh, Jung-Kyu Lee, John Huang, Kai Chang   +3 more
openaire   +1 more source

Low Cross-Polarization Reflectarray Antenna

IEEE Transactions on Antennas and Propagation, 2011
A low cross-polarization center-fed microstrip reflectarray antenna is presented. The cross-polarization elimination is accomplished by a particular arrangement of the elements. Using this technique, a center-fed reflectarray antenna has been designed at center frequency of 11.7 GHz.
H. Hasani, M. Kamyab, A. Mirkamali
openaire   +1 more source