What is up and down converter?
An up-down converter and mixer is a device that is intended to convert an analog signal between a lower frequency and a higher frequency. They are typically used in receiver front-ends or in the transmitter signal path to generate the RF signal for subsequent amplification.
What is RF up down converter?
an RF downconverter is a device which converts high radio frequency signal to low radio frequency signal is known as RF downconverter. Like RF upconverter, an RF downconverter will also have either one or two stages of mixing. Often RF downconverter is used in combination with RF LNA (Low Noise Amplifier).
What does a down converter do?
In digital signal processing, a digital down-converter (DDC) converts a digitized, band-limited signal to a lower frequency signal at a lower sampling rate in order to simplify the subsequent radio stages. The process can preserve all the information in the frequency band of interest of the original signal.
What is BUC and LNB?
BUC (Block Up converter) It converts the radio signals from a lower frequency to higher to transmit to the satellite. On the other hand LNB (Low Noise Block Converter) collects the radio waves from the satellite and converts them to a signal sent to the modem at the endpoint through a cable.
How does an up converter work?
Block Up Converter uses phase-locked loop local oscillators and optionally uses an external frequency of 10 MHz to maintain the correct transmitted frequency. It converts frequencies from L-band to any of the required bands like S, C, X Ku and Ka band.
Why do we convert RF to IF?
Conversion to an intermediate frequency is useful for several reasons. When several stages of filters are used, they can all be set to a fixed frequency, which makes them easier to build and to tune. Lower frequency transistors generally have higher gains so fewer stages are required.
How do Upconverters work?
An upconverter allows the digital information stored on a DVD to be transmitted directly to a hi-definition TV without ever having to be converted to an analog signal. An upconverter also takes the lower screen resolution on most DVDs and “upconverts” it to the higher resolutions offered by HDTVs.
How does a block up converter work?
A block up converter (BUC) is used to transmit signals to satellites. It converts a low IF frequency signal to higher frequencies for transmission to a satellite. In addition to up converting the frequency, they also amplify the signals.
What is a digital up converter?
Digital Up Converters (DUC) and Digital Down Converters (DDC) are widely used in communication systems for scaling the sample rate of signals. Digital up conversion is required when a signal is translated from baseband to intermediate frequency (IF) band.
What is data rate in ADC?
• Data rate is the rate of the digital output data from an ADC or digital input data rate. to a DAC. • In many cases, these are NOT the same rate.
What is difference between LNA and LNB?
Also called a low-noise block, low-noise converter (LNC), or even low-noise downconverter (LND), the device is sometimes inaccurately called a low-noise amplifier (LNA). The LNB is a combination of low-noise amplifier, frequency mixer, local oscillator and intermediate frequency (IF) amplifier.