[time-nuts] injection locking

[Don Latham]

Hi Ulrich and all, you kicked up an old memory. In the early 1960's a
friend and I messed some with nuclear magnetic resonance and synchronous
oscillators for detection of same. Later found a nice paper:
Uzunoglu and White, IEEE Journal of Solid-State Circuits V. SC-20,#6,
Dec.1985, p.1214-1226. Has substantially the same circuit as the web page
someone noted earlier, and a lot of analysis. Basically, the problems are
the same as lock-in, the fight being between essentialy the Q of the
locking circuit and lock time and so forth.
Interesting; when the time comes for the 64 MHz oscillator I'll try it!
Don



Ulrich Bangert
> Joop,
>
> you may also search for "synchronous oscillator". You will find for
> example:
>
> http://www.amalgamate2000.com/radio-hobbies/radio/synchronous_oscillator.htm
>
> Best regards
> Ulrich
>
>> -----Ursprungliche Nachricht-----
>> Von: time-nuts-bounces at febo.com
>> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Joop
>> Gesendet: Mittwoch, 10. Februar 2010 13:50
>> An: time-nuts at febo.com
>> Betreff: [time-nuts] injection locking
>>
>>
>> >You can even build an injection locked divide by 5 stage.
>> Choosing the
>> >right oscillator topology and injection method allows high level
>> >injection to be used with an LC oscillator.
>> >
>> >Bruce
>> >
>>
>> Are there references to some practical circuits? That would be great.
>>
>> A google search on "injection locking" and "synchronous
>> oscillator" results in a lot of conceptual descriptions but
>> nothing that one can build, try out and study. Maybe some of
>> the scientific articles or books contain circuits, but I am
>> not a IEEE member.
>>
>> Cheers,
>> Joop
>>
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-- 
Dr. Don Latham AJ7LL
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