image rejection sentence in Hindi
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- Image rejection is an important factor in choosing the intermediate frequency of a receiver.
- IF increases the receiver's " image rejection " without requiring additional selectivity in the RF stage.
- The ability of a receiver to reject interfering signals at the image frequency is measured by the image rejection ratio.
- The ability of the receiver to reject this image gives the image rejection ratio ( IMRR ) of the system.
- IF "', the higher the IF, the farther apart these two frequencies are, and the better the image rejection.
- In order to suppress local oscillator leakage and provide a slight amount of image rejection, a varactor and a coil provide one stage of tracking bandpass filtering.
- Since the frequency separation between the bandpass and the image frequency is 2f _ \ mathrm { IF } \ !, a higher intermediate frequency improves image rejection.
- This image rejection filter does not need great selectivity, but as the receiver is tuned to different frequencies it must " track " in tandem with the LO.
- "' Double-conversion superheterodyne "': In choosing the intermediate frequency ( IF ) used in a superhet, there is a tradeoff between image rejection and selectivity.
- RF, but in some modern receivers ( e . g . scanners and spectrum analyzers ) a higher IF frequency is used to minimize problems with image rejection or gain the benefits of fixed-tuned stages.
- In order to achieve both good image rejection and selectivity, many modern superhet receivers use " two " intermediate frequencies; this is called a " dual-conversion " or " double-conversion " superheterodyne.
- There is a second frequency conversion ( making a triple-conversion receiver ) that mixes the 81.4 MHz first IF with 80 MHz to create a 1.4 MHz second IF . Image rejection for the second IF is not a major problem because the first IF provides adequate image rejection and the second mixer is fixed tuned.
- There is a second frequency conversion ( making a triple-conversion receiver ) that mixes the 81.4 MHz first IF with 80 MHz to create a 1.4 MHz second IF . Image rejection for the second IF is not a major problem because the first IF provides adequate image rejection and the second mixer is fixed tuned.
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