How To Specify Antennas - Millimeter Wave Products
Cassegrain antennas are recommended for frequencies where the feed waveguide attenuation is appreciable and where the reflector is large enough to produce a beamwidth of 1 degree or less. (See Gain/Beamwidth Chart). At millimeter wavelengths, the loss in a waveguide from the input flange to the focus of parabolic reflector can be several dB.
Cassegrain antenna - Wikipedia
In telecommunications and radar, a Cassegrain antenna is a parabolic antenna in which the feed antenna is mounted at or behind the surface of the concave main parabolic reflector dish and is aimed at a smaller convex secondary reflector suspended in front of the primary reflector.
The CCG cassegrain antenna feature a precision aluminum main reflector that provides excellent performance at millimeter wave frequencies between 18 to 140 GHz. The CCGI series antennas feature metallized fiberglass reflectoras and are available from 12.4 to 140 GHz. They offer very high performance in a lightweight antenna structure.
Cassegrain Reflector Antennas | Antenna Design, Gain & Specs
At Millimeter Wave Products Inc. (Mi-Wave) we specialize in manufacturing the highest quality cassegrain reflector antennas for many needs. The 223 Series antennas feature metalized fiberglass reflectors and are available from 5.0 to 220 GHz.
Scalar feed horns are widely used to feed the Gaussian optical antennas and Cassegrain antennas. Besides flat gain scalar feed horns, choke flange horns are another type of antenna that features low sidelobe levels and flat gain across the full waveguide band.
Cassegrain Antennas | Eravant, Formerly SAGE Millimeter
42 dBi Gain, 71 to 86 GHz, 9" Reflector Diameter, WR-10 Waveguide, Weather Resistant, W-Band Cassegrain Antenna
The CCG cassegrain antenna feature a precision aluminum main reflector that provides excellent performance at millimeter wave frequencies between 18 to 140 GHz. The CCGI series antennas feature metallized fiberglass reflectoras and are available from 12.4 to 140 GHz. They offer very high performance in a lightweight antenna structure.
Cassegrain Antennas – Millimeter Wave Products | Waveguide …
Mi-Wave’s 222 & 223 Series cassegrain reflector antennas consists of a parabolic reflector, a primary feed, sub-reflector, and a feed support assembly of four low profile aluminum spars that are attached to the rim if the reflector to position the feed.
Cassegrain Antenna Design, Fabrication, and Testing for Passive ...
The aim of our study was to describe the design and characterization of a Cassegrain antenna for Millimeter Wave (MMW) Imaging purposes. The software design and hardware fabrication model of Ka band Cassegrain Antenna operating at 35 GHz center frequency is provided, with a high gain of 42.7 dBi and narrow beamwidth of 0.3°.
Cassegrain antennas are a subcategory of reflector antennas. Reflector antennas have been used from discovery of electromagnetic wave propagation onwards. The most important applications of reflector antennas are in radar, space communications, radio astronomy and wireless communications.
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