EMCP microstrip antennas as feed for satellite receiver

Singh, Anil Kumar; Kumar, G.

doi:10.1109/aps.1996.549829

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…Multilayer patch antennas can provide a return loss of 10 dB or better over a 50% or more bandwidth. Microstrip feed antennas are used singly or in arrays and can be incorporated in a cavity or a horn to improve the radiation performance for feed applications where low noise temperature is required [64,65].…”

Section: Microstrip Feedsmentioning

confidence: 99%

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Feed Antennas

Bird

2007

Modern Antenna Handbook

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Section: Microstrip Feedsmentioning

confidence: 99%

“…The chokes also assist to reduce the spillover energy and rear-lobes, which is important in low noise applications. An example of a two-layer microstrip patch feed is shown in Figure 18.26 [64,65].…”

Section: Microstrip Feedsmentioning

confidence: 99%

Feed Antennas

Bird

2007

Modern Antenna Handbook

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“…Phased array feeds allow correction of pattern distortion due to reflector surface aberrations [ Amitay and Zucker , 1972] and electronic formation of multiple scanned beams [ Galindo‐Isreal et al , 1978; Mrstik and Smith , 1981]. Array feeds are commonly used to obtain shaped gain patterns or achieve other pattern design criteria for such applications as satellite communications [ Reid and Bathker , 1972; Bird , 1982; Karimi and Blostein , 1996; Huang and Jamnejad , 1989; Singh and Kumar , 1996; Hall et al , 1989; Perrott and Griffin , 1991]. Phased array feeds have been used in radar applications for wide‐angle scanning and improvement of the efficiency of off‐axis beams of large‐aperture reflectors [ Blank and Imbriale , 1988].…”

Section: Introductionmentioning

confidence: 99%

Interference mitigation using a focal plane array

et al. 2005

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[1] We consider the use of spatial filtering algorithms for radio frequency interference (RFI) mitigation in conjunction with a focal plane feed array of electrically small elements. Numerical simulations are used to study the performance of 7 and 19 element hexagonal dipole arrays with a 25 m reflector at an operating frequency of 1612 MHz. Using the maximum SNR algorithm to generate array weights, an interfering signal was attenuated by 40 dB or more. The effective sensitivity of the system, including interferer power in the system noise temperature, was comparable to the sensitivity attained in the absence of RFI. Moving the interferer through the reflector pattern sidelobes caused fluctuations in the gain and system sensitivity. This effect was exacerbated by a reflector model with random surface distortions. These results indicate that array feeds are a promising approach for RFI mitigation, but achieving stable radiation patterns in the presence of an interferer may require a trade-off between pattern control and maximum attainable sensitivity.

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Antenna Feeds

Bird

2024

Encyclopedia of RF and Microwave Engineering

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The term “antenna feeds” describe many types of antennas in common use today. Feeds are a means of supplying energy to (or receiving energy from) a secondary antenna, such as a reflector, lens, reflectarray, or beam waveguide, via a transmission line or waveguide. Everyday applications of antennas with feeds include satellite communications, radar, radio telescopes, deep‐space probes, and terrestrial microwave and millimeter‐wave radiolinks.After a brief historical introduction, the basic characteristics of antenna feeds are explained. Specific feed types are then described under four main headings, namely, aperture, linear, traveling‐wave, and compound antennas. The approach adopted combines a short description of physical attributes with an outline of possible applications.The class of aperture antennas is the most extensive, and details are given of various circular and rectangular waveguides and horns, self‐supporting feeds, and microstrip patches in feed applications. Linear antenna feeds include the Yagi–Uda, log‐periodic, and zigzag arrays. These are reviewed, and the properties of importance are highlighted. Under the heading of traveling‐wave antennas, the antennas discussed include dielectric rods, profiled slots, Vivaldi antennas, and linefeed antennas for cylindrical and spherical reflectors. Finally, the antennas covered in the compound feeds category are arrays, beam waveguides, splash plates, and dichroic reflectors.Antenna feeds are linked intrinsically with feed systems, and some examples given are diplexers, beamforming networks, and comparator networks for monopulse tracking.The article concludes with an outline of modern design methods of importance of feed antennas and some predictions of possible future developments.

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EMCP microstrip antennas as feed for satellite receiver

Cited by 4 publications

References 2 publications

Feed Antennas

Feed Antennas

Interference mitigation using a focal plane array

Antenna Feeds

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