Feed horn

feedhornfeed antennafeedhornssatellite feedhorn
In parabolic antennas such as satellite dishes, a feed horn (or feedhorn) is a small horn antenna used to convey radio waves between the transmitter and/or receiver and the parabolic reflector.wikipedia
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Horn antenna

hornhornsCorrugated Horn
In parabolic antennas such as satellite dishes, a feed horn (or feedhorn) is a small horn antenna used to convey radio waves between the transmitter and/or receiver and the parabolic reflector.
They are used as feed antennas (called feed horns) for larger antenna structures such as parabolic antennas, as standard calibration antennas to measure the gain of other antennas, and as directive antennas for such devices as radar guns, automatic door openers, and microwave radiometers.

Satellite dish

satellite dishesdishsatellite antenna
In parabolic antennas such as satellite dishes, a feed horn (or feedhorn) is a small horn antenna used to convey radio waves between the transmitter and/or receiver and the parabolic reflector.
Mounted on brackets at the dish's focal point is a device called a feedhorn.

Parabolic antenna

dish antennaparabolicparabolic dish antenna
In parabolic antennas such as satellite dishes, a feed horn (or feedhorn) is a small horn antenna used to convey radio waves between the transmitter and/or receiver and the parabolic reflector.
A typical parabolic antenna consists of a metal parabolic reflector with a small feed antenna suspended in front of the reflector at its focus, pointed back toward the reflector.

Low-noise block downconverter

LNBlow-noise block converterBlock conversion
This is called the low-noise block downconverter (LNB), and the unit consisting of the horn plus the converter is called the LNB with feedhorn (LNBF).
The microwave signal from the dish is picked up by a feedhorn on the LNB and is fed to a section of waveguide.

Focal cloud

If the imperfections are formed in a way that the phase shifts of reflected waves, at a large portion of the dish, are near 180 degrees between them and the feed horn, this results in self-cancellation of the specific frequency.

Radio wave

radio wavesradioradio signal
In parabolic antennas such as satellite dishes, a feed horn (or feedhorn) is a small horn antenna used to convey radio waves between the transmitter and/or receiver and the parabolic reflector. In transmitting antennas, it is connected to the transmitter and converts the radio frequency alternating current from the transmitter to radio waves and feeds them to the rest of the antenna, which focuses them into a beam.

Transmitter

radio transmittertransmittersradio transmitters
In parabolic antennas such as satellite dishes, a feed horn (or feedhorn) is a small horn antenna used to convey radio waves between the transmitter and/or receiver and the parabolic reflector. In transmitting antennas, it is connected to the transmitter and converts the radio frequency alternating current from the transmitter to radio waves and feeds them to the rest of the antenna, which focuses them into a beam.

Parabolic reflector

parabolic mirrorparabolicparabolic dish
In parabolic antennas such as satellite dishes, a feed horn (or feedhorn) is a small horn antenna used to convey radio waves between the transmitter and/or receiver and the parabolic reflector.

Radio frequency

RFradio frequenciesradio-frequency
In transmitting antennas, it is connected to the transmitter and converts the radio frequency alternating current from the transmitter to radio waves and feeds them to the rest of the antenna, which focuses them into a beam.

Alternating current

ACalternating-currentalternating
In transmitting antennas, it is connected to the transmitter and converts the radio frequency alternating current from the transmitter to radio waves and feeds them to the rest of the antenna, which focuses them into a beam.

Radio receiver

receiverreceiversRadios
In parabolic antennas such as satellite dishes, a feed horn (or feedhorn) is a small horn antenna used to convey radio waves between the transmitter and/or receiver and the parabolic reflector.

Microwave

microwavesmicrowave radiationmicrowave tube
Feed horns are used mainly at microwave (SHF) and higher frequencies.

Super high frequency

SHFSHF-bandsuper-high frequency
Feed horns are used mainly at microwave (SHF) and higher frequencies.

Frequency

frequenciesperiodperiodic
Feed horns are used mainly at microwave (SHF) and higher frequencies.

Polarization (waves)

polarizationpolarizedpolarized light
The feedhorn also selects the polarization of the waves to be received, which helps to attenuate unwanted signals from adjacent channels and transponders, and from other communications satellites at nearby orbital positions.

Attenuation

attenuateattenuatedattenuating
The feedhorn also selects the polarization of the waves to be received, which helps to attenuate unwanted signals from adjacent channels and transponders, and from other communications satellites at nearby orbital positions.

Signaling (telecommunications)

signalsignalingout-of-band signaling
The feedhorn also selects the polarization of the waves to be received, which helps to attenuate unwanted signals from adjacent channels and transponders, and from other communications satellites at nearby orbital positions.

Adjacent channel

adjacent-channeladjoining frequencyfirst adjacent
The feedhorn also selects the polarization of the waves to be received, which helps to attenuate unwanted signals from adjacent channels and transponders, and from other communications satellites at nearby orbital positions.

Transponder

transpondersCground beacon
The feedhorn also selects the polarization of the waves to be received, which helps to attenuate unwanted signals from adjacent channels and transponders, and from other communications satellites at nearby orbital positions.

Communications satellite

satellite communicationssatellitecommunication satellite
The feedhorn also selects the polarization of the waves to be received, which helps to attenuate unwanted signals from adjacent channels and transponders, and from other communications satellites at nearby orbital positions.

Vertical and horizontal

verticalhorizontalhorizontal plane
This can be either horizontal or vertical if the polarization is linear, or clockwise or counterclockwise (also called left- and right-handed) if it is circular.

Linear polarization

linearly polarizedlinearlinear polarized
This can be either horizontal or vertical if the polarization is linear, or clockwise or counterclockwise (also called left- and right-handed) if it is circular.

Clockwise

counterclockwiseCCWCW
This can be either horizontal or vertical if the polarization is linear, or clockwise or counterclockwise (also called left- and right-handed) if it is circular.

Circular polarization

circularly polarizedcircularly polarized lightcircular
This can be either horizontal or vertical if the polarization is linear, or clockwise or counterclockwise (also called left- and right-handed) if it is circular.

Insertion loss

lossInsertion Loss Measurement
Certain devices can also allow a feedhorn to accept both linear and circular, though these cause a slight insertion loss to all incoming signals.