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#1
March 31st 06, 05:14 AM
posted to rec.radio.amateur.homebrew
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BJT MIXER QUESTION: should it be used as non-llinear mode or switching mode?
very simple application..i have two input frequencies and would like to
use single-fed bjt transistor to get a difference frequency... any other design recommendation is highly appreciated......thanks! |
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#2
March 31st 06, 12:44 PM
posted to rec.radio.amateur.homebrew
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BJT MIXER QUESTION: should it be used as non-llinear mode or switching mode?
e2 wrote: very simple application..i have two input frequencies and would like to use single-fed bjt transistor to get a difference frequency... any other design recommendation is highly appreciated......thanks! A balanced switching mixer using two BJTs would be a lot better. Or, you could use bus switches as in the FST3125 which would be better still. Leon |
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#3
March 31st 06, 04:31 PM
posted to rec.radio.amateur.homebrew
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BJT MIXER QUESTION: should it be used as non-llinear mode or switching mode?
Just make sure one signal is large enough to drive the device well into it's
non-linear region. 73, Steve, K9DCI "e2" wrote in message oups.com... very simple application..i have two input frequencies and would like to use single-fed bjt transistor to get a difference frequency... any other design recommendation is highly appreciated......thanks! |
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#4
April 1st 06, 05:43 AM
posted to rec.radio.amateur.homebrew
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BJT MIXER QUESTION: should it be used as non-llinear mode or switching mode?
can you give me a simple configuration?or schematic?
thanks! |
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#5
April 1st 06, 05:45 AM
posted to rec.radio.amateur.homebrew
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BJT MIXER QUESTION: should it be used as non-llinear mode or switching mode?
using fixed bias, i will connect each frequency input to the bjt's base
which is emitter couple then how will i combine them? thalks |
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Linear Mode
