WebUHF Vertical Antenna Feed Point Loop—Why? Vote. Amateur radio Hobbies. 1 comment. Best. Add a Comment. dnult • 3 min. ago. Those are called "ugly baluns" and it's a simple effective way of suppressing common mode current on the outer surface of the coax shield. WebApr 5, 2024 · A wideband flexible coplanar microstrip patch (CPW) antenna is developed on a felt substrate to radiate from 1.4 to 3 GHz. The dimension of the antenna is 0.37λ × 0.37λ × 0.007λ, developed on felt, which is a flexible textile material with a 1.38 dielectric constant.The patch and ground are printed on the same side of the substrate, where a …
UHF Vertical Antenna Feed Point Loop—Why? : r/amateurradio
WebAntenna Designer Gregorian – offset reflector The reflector can be analyzed using the student version of GRASP available from TICRA using a Gaussian beam feed antenna. The executable GRANETDOF ( Linux … WebThe simplest reflector antenna consists of two components: a reflecting surface and a much smaller feed antennaat the reflector’s focal point. Constructions that are more complex involve a secondary reflector (a subreflector) at the focal point, which is illuminated by a primary feed. These are called dual-reflector antennas. i hate talking to my mom
Introduction to Antenna principles
WebIn telecommunication and radar use, a Cassegrain antenna is an antenna in which the feed radiator is at or near the surface of a concave paraboloidal main reflector and directs to a convex hyperboloidal sub-reflector. Both reflectors have a common focal point. WebGregory antenna is an antenna with a secondary sub-reflector in front of a concave primary mirror, which is usually a paraboloid. The Gregory antenna is designed similar to the Cassegrain antenna . In the Gregorian … Weba parabolic antenna in which the feed antenna is mounted at or behind the surface of the main parabolic reflector dish. For the transmitter system, the beam of radio waves from the feed ... difference is that the Cassegrain uses a hyperboloid subreflector while the Gregorian uses an elliptical subreflector. Because it allows for a relatively ... i hate talking to people reddit