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A duplexer is a device that allows bi-directional (duplex) communication over a single channel. In radar systems, a device that isolates the receiver from the transmitter while permitting them to share a common antenna. Note 1: A duplexer must be designed for operation in the frequency band used by the receiver and transmitter, and must be capable of handling the output power of the transmitter. Note 2: A duplexer must provide adequate rejection of transmitter noise occurring at the receive frequency, and must be designed to operate at, or less than, the frequency separation between the transmitter and receiver. Note 3: A duplexer must provide sufficient isolation to prevent receiver desensitization.

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What electronic device that detects both vertically and horizontally polarized signal simultaneously?

Orthomode transducerFrom Wikipedia, the free encyclopediaOrthomode transducer, VSAT KubandOutdoor unit, includes feed horn, OMT, LNB and BUCOrthomode transducer (Portenseigne, France)Orthomode transducer, vertical and horizontal polarityAntenna side of OMTAn orthomode transducer is a microwave duct component of the class of microwave circulators. It is commonly referred to as an OMT, and commonly referred as a polarisation duplexer. Such device may be part of a VSAT antenna feed Orthomode transducers serve either to combine or to separate two microwave signal paths. One of the paths forms the uplink, which is transmitted over the same waveguide as the received signal path, or downlink path. For VSAT modems the transmission and reception paths are at 90° to each other, or in other words, the signals are orthogonally polarised with respect to each other. This orthogonal shift between the two signal paths provides approximately an isolation of 40dB in the Ku band and Ka band radio frequency bands.Hence this device serves in an essential role as the junction element of the outdoor, unit (ODU) of a VSAT modem. It protects the receiver front-end element (thelow-noise block converter, LNB) from burn-out by the power of the output signal generated by the block up converter (BUC). The BUC is also connected to thefeed horn through a wave guide port of the OMT junction device.Orthomode transducers are used in dual-polarised Very small aperture terminals (VSATs), in sparsely populated areas, radar antennas, radiometers, and communications links. They are usually connected to the antenna's down converter or LNB and to the High Power Amplifier (HPA) attached to a transmittingantenna.Wherever there are two polarisations of radio signals (Horizontal and Vertical), the transmitted and received radio signal to and fro the antenna are said to be "orthogonal". This means that the modulation planes of the two radio signal waves are at 90 degrees angles to each other. The OMT device is used to separate two equal frequency signals, of high and low signal power. Protective separation is essential as the transmitter unit would seriously damage the very sensitive low (µV) micro-voltage, front-end receiver amplifier unit at the antenna.The transmission signal of the up-link, of relatively high power (1, 2,or 5 watts for common VSAT equipment) originating from BUC,(block up converter) and the very low power received signal power (µ-volts) coming from the antenna (aerial) to the LNB receiver unit, in this case are at an angle of 90° relative to each other, are both coupled together at the feed-horn focal-point of the Parabolic antenna. The device that unites both up-link and down-link paths, which are at 90° to each other, is known as an Orthogonal Mode Transducer OMT.In the VSAT Ku band of operation case, a typical OMTOrthomode Transducer provides a 40dB isolation between each of the connected radio ports to the feed horn that faces the parabolic dish reflector (40dB means that only 0.01% of the transmitter's output power is cross-fed into the receiver's wave guide port). The port facing the parabolic reflector of the antenna is a circular polarizing port so that horizontal and vertical polarity coupling of inbound and outbound radio signal is easily achieved.The 40dB isolation provides essential protection to the very sensitive receiver amplifier against burn out from the relatively high-power signal of the transmitter unit. Further isolation may be obtained by means of selective radio frequency filtering to achieve an isolation of 100dB (100dB means that only a 10−10 fraction of the transmitter's output power is cross-fed into the wave guide port of the receiver).The second image demonstrates two types of outdoor units, a 1-watt Hughes unit and a composite configuration of a 2-watt BUC/OMT/LNB Andrew, Swedish Microwave units.The following images show a Portenseigne & HirschmannKu band configuration, that highlights the horizontal the vertical, and circular polarized wave-guide ports that join to the Feed-horn, the LNB or BUC elements of an outdoor unit


Related questions

What is radar duplexer?

duplexer is the device that can separated the trasmitted signal and received signal.


A duplexer is used?

There are several kinds of equipment called a "duplexer", including: * In telecommunications, a duplexer is a device that combines two or more signals into a common channel or medium to increase its transmission efficiency. Simply put the duplexer allows the antenna to be shared between transmit and receiv. * In printing, a duplexer is used to print on both sides of the paper. * ...


What are the price ranges for an HP Duplexer?

HP Duplexer printers are priced according to the specifications of the printers. Some of the basic printers are priced under $50. The more deluxe models sell for as much as $500.


What type of device is a duplexer?

A duplexer may refer to a device used in radar and radio communications systems that allows for bi-directional communication, meaning that it allows the user to both send and receive messages. It may also refer to the component of a printer that allows it to simultaneously print both sides of a sheet of paper.


What are the different applications of directional coupler?

unidirectional wave length unidirectional power measurement reflectometer balanced duplexer swr measurement


What has the author David Chikowore written?

David Chikowore has written: 'Design of 1500 MHZ duplexer for fixed link radio systems'


What is the use of duplexer in microwave communication and explain its types?

The meaning of a dip-lexer in a microwave is used for non-broadcast applications. This can be non broadcast on the radio.


What is the function of duplexer in a cell phone?

The way a duplex functions in a cell phone is by having a two - way communication in which both terminals can transmit simultaneously.


What is a Canon MP830 capable of doing?

A Canon MP830 is capable of scanning, printing, faxing, functioning as an ADF, a duplexer, and a media card reader. It's recommended due to its multiple and easy functions.


What is the application of hybrid tee?

1.hybrid tee can be used to measure unknown impedance. 2.it is also used as duplexer in radars to use same antenna for transmission and reception. 3.it is used as mixer to convert RF signal into intermediate signal in receiver section.


Difference between duplexer and diplexer?

Everyone is clear on what a filter is, but there exists a lot of confusion over what is the difference between a duplexer and a diplexer. As you might expect, there are a lot of opinions - even between manufacturers. Traditionally, duplex communications implies the ability to transmit (Tx) and receive (Rx) on the same channel simultaneously. doing so requires a means of separating the transmit and receive paths in a manner rendering them independent of each other, i.e., isolation. Thus, a duplexer is used. One method is to use a circulator for routing signals from the transmitter to the antenna while routing singles from the antenna to the receiver. If the Tx and Rx operate at different frequencies, the job can be accomplished by a set of filters with a common feed point. A diplexer is usually thought of as a set of filters, again with a common feed point, that is used to combine or split signals travelling to or from an antenna, respectively, while providing isolation between the two independent paths. If more than two independent paths are required, the name for both usually changes to a common term: multiplexer.


What are some eight letter words with 6th letter X and 8th letter R?

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern -----X-R. That is, eight letter words with 6th letter X and 8th letter R. In alphabetical order, they are: diplexer duplexer