It uses Squint Phenomena. Target abd clutter will be hit by two beams seperately.
By this radar echoes will be added up whereas clutter which has Radar Cross Section Fluctuations will average. By this desired targets will be obtained with reduced fluctuations.
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Horn antenna are typically fed by a section of a waveguide, the waveguide itself is often fed with a short dipole.
horn
Horn Antenna is best exited by waveguide
waveguide is a metal pipe that contains and guides microwaves from place to place in a microwave system (e.g. oscillators, amplifiers, mixers, modulators, filters, antennas)horn antenna has a waveguide connected at its focus, in transmit mode the waveguide feeds the horn which then emits a microwave beam, in receive mode the horn collects a microwave beam and concentrates it int the waveguide
microwave. it couples the waveguide to open space.
Circular waveguides offer implementation advantages over rectangular waveguide in Calculations for circular waveguide requires the application of Bessel.
A horn antenna is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam. Horn antennas are used as antennas at UHF and microwave frequencies that are above 300 MHz.
well the slotted retainer nut needs to be removed.Then have someone turn the radio on in the car, when the motor start to eject the antenna upward gentlly pull on it helping it gentlly pull til it comes all the way out. with the new antenna take the plastic slotted part and face it the way the old one came out, (facing forward of the car) push it in gentlly til it stops.Then have that same person turn the radio off. the motor will now pull the cord and antenna inwhen its all the way in screw back the slotted retainer nut. Kongkit Raggan-Supatanampon
Rectangular Waveguide - TE10; (TM11 in case of TM waves) Circular Waveguide - TE11;
Moisture in the air in a waveguide can scatter the microwave energy the waveguide is designed to transport. This translates into signal loss or attenuation. The VSWR drops, and that is not a good thing.
•Advantage: •size •design simplicity •robustness
An electromagnetic pump implies pumping or adding energy to electromagnetic wave or fields. This can be accomplished by using an amplifier and some of of antenna or field coil. Could be a simple microwave amplifier and dish antenna, or like the large hadron Collider, a lot of Klystron (amplifiers) resonating their energy into a large circular waveguide of sorts.