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From: rgh on 16 Feb 2010 23:10
Hello all

looking for a device to add two signals x(t) and y(t)
x(t) - is a signal having a bandwidth of upto 5GHz
y(t) - more or less noise with uniform ditribution

Would appreciate some pointers/links in this direction.

Regards
rhg
From: Eric Jacobsen on 16 Feb 2010 23:30
On 2/16/2010 9:10 PM, rgh wrote:
> Hello all
>
> looking for a device to add two signals x(t) and y(t)
> x(t) - is a signal having a bandwidth of upto 5GHz
> y(t) - more or less noise with uniform ditribution
>
> Would appreciate some pointers/links in this direction.
>
> Regards
> rhg

g(t) = x(t) + y(t)


That oughta do it.

If that's not an adequate answer for you, consider improving the question.

--
Eric Jacobsen
Minister of Algorithms
Abineau Communications
http://www.abineau.com
From: Vladimir Vassilevsky on 16 Feb 2010 23:36


rgh wrote:

> Hello all
>
> looking for a device to add two signals x(t) and y(t)
> x(t) - is a signal having a bandwidth of upto 5GHz
> y(t) - more or less noise with uniform ditribution
>
> Would appreciate some pointers/links in this direction.


x(t) >---[R]----
|----> x(t) + y(t)
y(t) >---[R]----


VLV
From: Eric Jacobsen on 16 Feb 2010 23:55
On 2/16/2010 9:36 PM, Vladimir Vassilevsky wrote:
>
>
> rgh wrote:
>
>> Hello all
>>
>> looking for a device to add two signals x(t) and y(t)
>> x(t) - is a signal having a bandwidth of upto 5GHz
>> y(t) - more or less noise with uniform ditribution
>>
>> Would appreciate some pointers/links in this direction.
>
>
> x(t) >---[R]----
> |----> x(t) + y(t)
> y(t) >---[R]----
>
>
> VLV

That's two devices. He must be looking for a splitter/combiner,
assuming the signals are electrical and the center frequency is low enough.

Hard to say.

--
Eric Jacobsen
Minister of Algorithms
Abineau Communications
http://www.abineau.com
From: Fred Marshall on 17 Feb 2010 02:48
Eric Jacobsen wrote:
> On 2/16/2010 9:36 PM, Vladimir Vassilevsky wrote:
>>
>>
>> rgh wrote:
>>
>>> Hello all
>>>
>>> looking for a device to add two signals x(t) and y(t)
>>> x(t) - is a signal having a bandwidth of upto 5GHz
>>> y(t) - more or less noise with uniform ditribution
>>>
>>> Would appreciate some pointers/links in this direction.
>>
>>
>> x(t) >---[R]----
>> |----> x(t) + y(t)
>> y(t) >---[R]----
>>
>>
>> VLV
>
> That's two devices. He must be looking for a splitter/combiner,
> assuming the signals are electrical and the center frequency is low enough.
>
> Hard to say.
>

"Add" is almost too general a term to deal with because of superposition
in linear systems. Really need more requirements / characterization
like the signals come from a voltage source, from a current source, from
some finite impedance sources, etc.

R is a device in some sense and multiple R's just use that same device
over again.... so, in that sense "a" device.

Fred
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