Last edited by Kagar
Friday, May 1, 2020 | History

2 edition of A Comparison of reflector antenna designs for wide-angle scanning found in the catalog.

A Comparison of reflector antenna designs for wide-angle scanning

A Comparison of reflector antenna designs for wide-angle scanning

  • 228 Want to read
  • 4 Currently reading

Published by National Aeronautics and Space Administration, For sale by the National Technical Information Service in [Washington, DC], [Springfield, Va .
Written in English

    Subjects:
  • Scanning systems.,
  • Antennas, Reflector.

  • Edition Notes

    StatementM. Zimmerman ... [et al.].
    SeriesNASA technical memorandum -- 101459.
    ContributionsZimmerman, M., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15289683M

    Antenna Assembly--The complete equipment associated with projecting radar waves into space and receiving them, consisting in general of a mounting base, gears and motors for rotating the antenna, synchros, potentiometers, the antenna proper, and the reflector, together with associated switches, such as those used in sector scanning, and the. It has been demonstrated that the proposed antenna can yield an UWB bandwidth of return loss less than −10 dB, from 3GHz to GHz covering the frequency band for most UWB communication systems. It is also observed that the proposed antenna exhibits a reasonable omni-directional radiation patterns in . Technology has advanced to such a degree over the last decade that it has been almost impossible to find up-to-date coverage of antennas. Antenna Handbook, edited by two of the world's most distinguished antenna speciallists, presents the most advanced antenna theory and designs and demonstrates their application in a wide variety of technical fields.


Share this book
You might also like
Using the Bible with audio-visuals.

Using the Bible with audio-visuals.

Trees in Anglo-Saxon England

Trees in Anglo-Saxon England

Tadao Andō

Tadao Andō

Anoline lizards of Jamaica

Anoline lizards of Jamaica

Stories of the Sea

Stories of the Sea

A pleasant enterlude, intituled, Like will to like quoth the Deuill to the collier

A pleasant enterlude, intituled, Like will to like quoth the Deuill to the collier

Historical studies in Mug̲h̲al numismatics

Historical studies in Mug̲h̲al numismatics

Shakespeare and the players

Shakespeare and the players

greatest gift of them all.

greatest gift of them all.

The modern church.

The modern church.

Safety code

Safety code

Your maximum mind

Your maximum mind

World at arms

World at arms

Your ability counts--

Your ability counts--

First-Term Attrition in the Navy

First-Term Attrition in the Navy

A Comparison of reflector antenna designs for wide-angle scanning Download PDF EPUB FB2

The authors compare the ability of six single- and dual-reflector designs to scan up to beamwidths in order to determine the feasibility of wide-angle scans using reflector antennas. NASA Technical Memorandum 10 A Comparison of Reflector Antenna Designs for Wide-Angle Scanning ~ (AASA-TU) B CCEPALISCh Cf R€PLECTCB NS9-; BblENhA LESIGbS ECE kIEE-Ab6XE ECA6bIblG Illlincis Univ.) 3C CSCL 20N UnclaS G3/32 0 19 19C2 M.

Zimmerman, S.W. Lee, and B. Houshmand University of Illinois at Urbana- ChampaignFile Size: KB. Download a comparison of reflector antenna designs for wide angle scanning ebook free in PDF and EPUB Format. a comparison of reflector antenna designs for wide angle scanning also available in docx and mobi.

Read a comparison of reflector antenna designs for wide angle scanning online, read in. Get this from a library. A Comparison of reflector antenna designs for wide-angle scanning. [M Zimmerman; United States.

National Aeronautics and Space Administration.;]. The purpose of this paper is to improve the scanning performance of the Side-fed Offset Cassegrain (SFOC) reflector antenna by adjusting its reflectors' shape. For such a reflector, a single-point source feed can be used and the feed design is a relatively simple one.

Ashmead and Pippard (Reference 3) and Li (Reference 4) have studied this antenna for wide-angle scanning. Sidelobe levels of 20 dB were obtained. The communications satellite multiple-beam antenna is essentially a narrow-angle scanning File Size: KB.

This paper proposes a hybrid scanning antenna architecture for applications in mm-wave intelligent mobile sensing and communications. We experimentally demonstrate suitable W-band leaky-wave antenna prototypes in substrate integrated waveguide (SIW) technology.

Three SIW antennas have been designed that within a % fractional bandwidth provide beam scanning over three adjacent Cited by: The segmented mirror antenna is designed for the radiometer application on the planned NASA Earth Science Geostationary Platforms in the s.

The antenna consists of two parts: a regular parabolic dish of 5 m in diameter which converts the radiation from feeds into a collimated beam, and a movable mirror that redirects the beam to a Author: Bijan Houshmand. sensing and communications applications when compared to phased arrays or reflector antenna architectures [18].

They can be implemented in either bulk micro-machined [13, 19–21] or planar PCB compatible [15, 22–24] technologies. Additionally, frequency beam scanning is an inherent feature in this class of antennas. Optimisation of wide angle scanning antennas by genetic algorithms; application to reflector antennas for automotive radars at 76 GHz #Gabrielle Landrac, Eddy Jehamy, Michel Ney 1Laboratory of Electronics and Systems for Telecommunications (LEST, CNRS), GET-ENST Bretagne, CSBREST Cedex, France [email protected]   M.

Kamran Saleem, H. Vettikaladi, A.S. Majeed, Alkanhal, M. Himdi, Integrated lens antenna for wide angle beam scanning at 79 GHz for automotive short range radar applications. IEEE Trans. Antennas Propag. 65(99), – () CrossRef Google ScholarAuthor: Muhammad Kamran Saleem, Majeed A.

Alkanhal, Hamsakutty Vettikaladi. Wide-angle Radiation Pattern Calculation of Paraboloidal Reflector Antennas: A Comparative Study by J. Chen P.J.I. de Maagt M.H.A.J. Herben EUT Report E wave applications. Reflector and lens antenna architectures [11, 12], although compatible with a simpler feeding network, are bulky and typically require mechanical reconfiguration to perform beam scanning, adding significant complexity and cost, increase power consumption and significantly limiting the.

Wide-angle scanning arrays are useful in radar applications, and the designs considered in the thesis are intended for an airborne radar antenna. After a study of the wide-angle scanning limits of three candidate elements, the tapered-slot was chosen for the proposed application. A tapered-slot antenna element was designed by using the.

Figure () Direction of reflected beam from a parabolic reflector antenna The beam width of the parabolic reflector antenna is related to the wavelength [13]. à L G ½ () Where à is the beamwidth.

D is the diameter of the reflector. ã is the wavelength. ements. For wide angle scanning one method of reducing this effect is to use a high dielectric thin sheet in front of the array elements called wide angle impedance matching (WAIM) [10], [11].

It can be shown that whilst this can re-duce the reflection coefficient it can also result in. A Modified Parabolic-Cylindrical Reflectarray Antenna for Wide Beam Scanning Capablility Fang Guo 1, Yilin Mao 2, Shenheng Xu 1, Fan Yang 1,2, Atef.

Elsherbeni 3 1Department of Electronic Engineering Tsinghua University Beijing, China E-mail: [email protected] Size: KB. This paper proposes a hybrid scanning antenna architecture for applications in mm-wave intelligent mobile sensing and communications.

We experimentally demonstrate suitable W-band leaky-wave antenna prototypes in substrate integrated waveguide (SIW) by: This paper describes an architecture for a Ku-band antenna based on a dual flat reflectarray configuration that provides electronic beam scanning within a 13 degree angular range.

The antenna configuration presents the simplicity of being implemented with two flat reflectarrays, it provides a compact optics and it can be easily folded and deployed. The phased array antenna (PAA) plays an important role in radar, broadcast, communication, etc.

[1, 2]. In practice, due to various factors, the scanning range of a PAA is often within o to +60o [1, 2]. It is still extremely challenging to achieve a scanning angle larger than 60o with an. the wide-angle scanning characteristic of the 8×8 array composed of proposed element is evaluated.

Besides, the microstrip steerable antenna array can be easily embedded into wearable medical or commercial devices. Keywords— Broad beam-width, microstrip antenna, phased array, medical devices.

INTRODUCTION. Antenna designs incorporating metamaterials can step-up the antenna's radiated power. Conventional antennas that are very small compared to the wavelength reflect most of the signal back to the source.

A metamaterial antenna behaves as if it were much larger than its actual size, because its novel structure stores and re-radiates energy. Abstract — This paper presents a 3-faceted linear array with wide angle scanning property targeting portable devices.

With this property, the antenna gain is maintained even when the main beam is steered away from zenith. The arrangement consists of a linear array of eight circular patches conformed to a 3-faceted structure.

design is capable of scanning only in one plane. By miniaturizing the Rotman lenses, stacking them at the output ports of the current design can make elevation scanning possible. Initial designs were carried out at Ku-band to minimize cost for the prototype design. Two different approaches are discussed for the.

Cylindrical parabolic reflectors have been widely used in those applications requiring high gain antennas. Their design is dictated by the geometric relation of the parabola, which relate the feed location, f, to the radiating aperture, D.

In this work, the use of reflectarrays is proposed to increase D without changing the feed location. In the proposed approach, the reflecting surface is Author: Francesco Greco, Luigi Boccia, Emilio Arnieri, Gian Domenico Amendola.

Phased array feeds have a long history of development for wide-angle scan-ning of radar beams [10] and for shaped beams on satellite transmitters {11} but the design constraints on these systems are considerably different from those on low noise radio astronomy antennas.

Transmitting systems are. Reflecting Systems TABLE I COMPARISON OF PERFORMANCE OF STEPPED REFLECTOR ANTENNAS Ramsay and Jackson () Paraboloid 12 35 4 Horn 15 ° 20 Vol.

50° Vol. 31 ° 36 Toraldo di Francia et al. () Paraboloid 59 47 34 13 Waveguide ° 61 Antenna parameter Geometry Wavelength (em. Radar is a detection system that uses radio waves to determine the range, angle, or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain.A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same.

Measuring Wide Angle Antenna Performance Using Small Cylindrical Scanners S.F. Gregson#1, C.G. Parini*2, J. Dupuy*3 #Nearfield Systems Inc. Magellan Drive, Torrance, CAUSA [email protected] *Queen Many, University of London School of Electronic Engineering & Computer Science.

Compared to the existing designs, the proposed antenna has a s 55, and 70% of the designs in [1–3], respectively. To investigate the performance of antenna versus key antenna design parameters, results of a parametric study are presented.

High-gain pencil-beam antennas are used for mechanical beam-scanning antennas. Although high antenna efficiency can be obtained by using dielectric lens antennas or reflector antennas (Kitamori et al.,Menzel et al., ), it is difficult to realize very thin planar structure because they essentially need focal spatial length.

By using Cited by: 3. You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read.

Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Your resource for papers, articles, newsletters and the blue book. Technical Papers. From RF and Microwave antenna test and measurement product to NSI-MI Technologies systems and services, these papers and articles are sure to provide invaluable information in your research.

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. Antenna for ADS-B Signals: /ch This chapter deals with calculations of the microstrip antenna and the linear phased array that.

to design an array feed for improved wide-angle scan. The main emphasis of the examples, however, is on beam-waveguide designs as exemplifled by the Deep Space Network (DSN) Deep Space Station (DSS) m antenna at Ka-band ( GHz).

Table 1. Comparison of antenna computational techniques for a single reflector Size: KB. Performance comparison of a matched feed horn with a potter feed horn for an offset parabolic reflector Sharma, S.

/ Pujara, Dhaval / Chakrabarty, S. / Singh, V. | digital version. Antenna radiation is either horizontally or vertically polarized. Mobile 2-way radio radiation is almost always vertically polarized.

Mobile-to-mobile, station-to-station or mobile-to-station radiation polarization should be matched. If everybody else on the frequency and/or band has vertically polarized antennas, you should too, unless maximum. In this paper, the design of a beam scanning, 3D-printed dielectric Transmitarray (TA) working in Ka-band is discussed.

Thanks to the use of an innovative three-layer dielectric unit-cell that exploits tapered sections to enhance the bandwidth, a 50 × 50 elements transmitarray with improved scanning capabilities and wideband behavior has been designed and experimentally by: 1.

Joseph, in Measuring Ocean Currents, Synthesis of Long Antenna from Small Antenna. In the synthesized antenna array concept, a very long antenna is constructed in principle essentially by an array of numerous small elemental radiators placed sufficiently close together to prevent grating lobes in the angular directions of interest and properly phased to.

J. Nagar and D. H. Werner, "A Comparison of Multi-Objective Optimizers Using a Microstrip Patch Antenna Test Problem," IEEE International Symposium on Antennas & Propagation and USNC/URSI National Radio Science Meeting, Vancouver, BC, Canada, JulyA Comparison of Reflector Antenna Designs for Wide-angle Scanning by M.

Zimmerman Book Summary: Download or read A Comparison of Reflector Antenna Designs for Wide-angle Scanning book by clicking button below to visit the book download website.

There are multiple format available for you to choose (Pdf, ePub, Doc).Yin S.X., C.G. Christodoulou and M. Hamid, “Radiation Pattern of a Test Reflector Antenna from Near Field Measurements over the Focal Region of a coupled Lens or Offset Reflector”, IEEE Transactions on Antennas and Propagation, vol.

37, pp.June