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how the Image frequency generated and how it rejected in Rx?

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rsunni

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how the Image frequency generated and how it rejected in superheterodyne Rx
 

Re: how the Image frequency generated and how it rejected in

thanks RealAEL, but i need deep details for image frequency and how it use to come
= F(rf) + 2IF
 

Re: how the Image frequency generated and how it rejected in

Image frequency - the frequency, which may exists in air with your desired frequency, but if you don't have antiimage filter or some kind of antiimage reciever's architecture, than this undesired freq will be translated by your mixer to the same IF and it may distorts usefull signal.
 

Re: how the Image frequency generated and how it rejected in

RF = 900
LO = 1000
IF = 100

IMAGE = 1100

LO - RF = IF

IMAGE - LO = IF ...BAD
 

Re: how the Image frequency generated and how it rejected in

... but if you don't have antiimage filter or some kind of antiimage reciever's architecture...

Antiimage Filter !!?? This is not the first time when I see this terminology.
For years I have used (accidentally) only Image Reject Filters.
 

Re: how the Image frequency generated and how it rejected in

For years I have used (accidentally) only Image Reject Filters

How do you accidentally use an image filter?

That's like accidently driving to San Fransisco.
 

Re: how the Image frequency generated and how it rejected in

Probably you miss the English class, but I’ll try to help you.

Checking the Webster Dictionary can find the signification of the word “Accidentally”:

“Happening without intent or through carelessness and often with unfortunate results”

Following words are synonyms and have almost the same signification:
Accidentally, incidentally, fortuitous, promiscuously, undesignately, adventitious, contingent.
 

Re: how the Image frequency generated and how it rejected in

vfone said:
Antiimage Filter !!?? This is not the first time when I see this terminology.
For years I have used (accidentally) only Image Reject Filters.

Yes, this is my mistake, I work now at antialias filter)). Correct in general use name, of course, is Image Rejection filter.
 

Re: how the Image frequency generated and how it rejected in

Probably you miss the English class, but I’ll try to help you.

No need to be an (ãs'hōl') !


1. The anus.
2. A thoroughly contemptible, detestable person.
3. The most miserable or undesirable place in a particular area.
 

Re: how the Image frequency generated and how it rejected in

Well done!!
Definitely you didn’t miss this class…is any of the three definitions that characterize you?
 

Re: how the Image frequency generated and how it rejected in

Yes,

1. The anus.

:D
 

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