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" <[email protected]>
Sent: Wednesday, February 10, 2010 8:27 PM
To: <[email protected]>
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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