[time-nuts] Advice on 10 MHz isolation/distribution amplifier

[Bob Camp]

Hi

How quiet does in need to be (phase noise)?

How clean does it need to be (harmonics)?

How much isolation / how much gain do you need?

How well do the outputs need to be matched / do you need a broad band match?

Does the issue with transformers also extend to other inductors?

Is cost / military components / small size / radiation tolerance an issue?

The answer to your question could be any of several bipolar transistor 
circuits, op amps, right up to "can't be done" based on some of the answers.

Bob

--------------------------------------------------
From: "life speed" <life_speed at yahoo.com>
Sent: Wednesday, February 10, 2010 8:27 PM
To: <time-nuts at febo.com>
Subject: [time-nuts] Advice on 10 MHz isolation/distribution amplifier

> Hello everyone,
>
> I am new to this list, happened across it while searching on distribution 
> amplifiers.
>
> I need to design a 10 MHz isolation/distribution amplifier with two 
> outputs for a high-vibration wide temperature range environment.  I was 
> considering using a design based on the NIST article 'A new 5 and 10 MHz 
> distribution amp', most likely the third incarnation, as I cannot tolerate 
> modulation of the signal via the transformer.
>
> I have looked at the work by Gerhard Hoffman, which is impressive. 
> However, the transformer remains.  I should mention I am also limited to 
> 15V power supply, and need to output into 50 ohms at 10 dBm.  Ideally DC 
> current will be minimized, preferably 20 - 30 mA per channel.  I can 
> generate a negative power supply if necessary, but would prefer not to.
>
> If anybody can offer tips so I don't undertake to reinvent the wheel, it 
> would be appreciated.
>
> Thanks in advance,
>  - Lifespeed
>
>
>
>
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