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Reflective array antenna

About: Reflective array antenna is a research topic. Over the lifetime, 4366 publications have been published within this topic receiving 57884 citations.


Papers
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Proceedings ArticleDOI
11 Jul 2010
TL;DR: In this paper, a cyclo-olefin polymer (COP) waveguide horn array antenna is proposed for millimeter-wave waveguide-type phased array antennas using low-loss engineering plastics not only to reduce cost but also to obtain high performances with complex configurations.
Abstract: Low cost and high performance millimeter-wave phased array antennas have been demanded in recent years due to increasing millimeter-wave applications in highspeed mobile communications, broadband wireless LAN/PAN (WLAN/WPAN), automotive collision avoidance radars, and so on. Several types of millimeter-wave antennas and components have been proposed for these systems. For example, plastic waveguide structures, which are composed of hollow liquid crystal polymer (LCP) and plated copper [1], [2], have been reported in order to reduce the cost for mass-production scheme. However, the phased array antennas are difficult to form their complex configurations and difficult to obtain low-loss characteristics as well. This paper presents millimeter-wave waveguide-type phased array antennas using low-loss engineering plastics not only to reduce cost but also to obtain high performances with complex configurations. That is a Cyclo-Olefin Polymer (COP) waveguide horn array antenna which is fabricated by injection molding process [3].

13 citations

Proceedings ArticleDOI
Andrea Michel1, R. Caso1, Alice Buffi1, Paolo Nepa1, G. Isola 
07 Jul 2013
TL;DR: In this article, an array of Travelling Wave Antennas (TWAs) is presented for near-field RFID applications in the UHF band (865-928 MHz).
Abstract: An array of Travelling Wave Antennas (TWAs) is presented for near-field RFID applications in the UHF band (865-928 MHz). Since TWAs are not resonating structures, the proposed antenna results to be scalable, allowing for an easy integration in commercial readers. The antenna is realized exploiting the coplanar waveguide technology and it is composed by four in-phase radiating elements, in order to obtain strong and uniform fields within a confined volume above the antenna surface. The overall antenna volume is 275 × 135 ×10 mm3. The meander geometry allows exciting all fields components, making the tag detection almost independent on its location and orientation on the antenna surface. In this paper, preliminary simulated results are discussed in terms of reflection coefficient and electric and magnetic field distributions.

13 citations

Proceedings ArticleDOI
20 May 2001
TL;DR: In this article, a method of null pattern synthesis of antenna arrays without phase shifters and attenuators has been presented, which is based on utilizing a voltage-controlled ferroelectric array, where the variable pattern of each antenna element is used to synthesize the array pattern with desired nulls.
Abstract: In this paper, new method of null pattern synthesis of antenna arrays without phase shifters and attenuators has been presented. This concept is based on utilizing a voltage-controlled ferroelectric array, where the variable pattern of each antenna element is used to synthesize the array pattern with desired nulls.

13 citations

Journal ArticleDOI
TL;DR: In this paper, a simple cost-effective technique of wideband grating-lobe suppression by rotation of the phased array antennas is developed for application in a system of low-frequency sparse aperture array (LF-SAA) antennas of the square kilometer array (SKA) radio-telescope.
Abstract: A simple cost-effective technique of wideband grating-lobe (GL) suppression by rotation of the phased array antennas is developed for application in a system of low-frequency sparse aperture array (LF-SAA) antennas of the square kilometer array (SKA) radio-telescope. The technique implies using of equal sparse planar circular antennas with the well-tried square lattice (SqL) distribution of the station antenna array sensors, which is known as the best in terms of production costs and maintenance charges. The peak levels of residual GLs in the fringe pattern of most pairs of the rotated antenna array stations do not exceed value of $- \mathbf{17}\;\mathbf{dB}$ over frequencies ranged from 70 to 450 MHz in the case of uniform antenna array element weighting, whereas the maximum levels of residual GLs are reduced to $- \mathbf{25}\;\mathbf{dB}$ when the Hamming weight tapering is applied.

13 citations

Proceedings ArticleDOI
01 Oct 2013
TL;DR: A phased array antenna design consisting of multiple, modular, flat panels the number of which is determined by specific application requirements, is discussed, envisaged that this approach will be a cost-effective alternative to mechanically steered dish antennas for radar, satellite communication and point to point communications, while bearing the advantages of flat or conformal structure and no moving parts.
Abstract: The authors discuss a phased array antenna design consisting of multiple, modular, flat panels the number of which is determined by specific application requirements Each panel has 512 antenna elements which are driven by their own Application Specific Integrated Circuits, in order to control the signal phase needed for electronic beam steering Furthermore, the antenna elements can transmit (or receive) in orthogonal polarisation states In the first embodiment, Ku-band microwave signals (receive over 1095-1275 GHz and transmit over 140-145 GHz) are phase-aligned, down converted to baseband and summed, permitting the receiver and the digital control circuitry to be fabricated on one low-cost SiGe ASIC It is envisaged that this approach will be a cost-effective alternative to mechanically steered dish antennas for radar, satellite communication and point to point communications, while bearing the advantages of flat or conformal structure and no moving parts

13 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20238
202222
20211
20209
20199
201816