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
To add to signals
Started by ●February 17, 2010
Reply by ●February 17, 20102010-02-17
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 > rhgg(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
Reply by ●February 17, 20102010-02-17
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
Reply by ●February 17, 20102010-02-17
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]---- > > > VLVThat'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
Reply by ●February 17, 20102010-02-17
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
Reply by ●February 17, 20102010-02-17
On Tue, 16 Feb 2010 20:10:56 -0800, 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 > rhgElectrical signals? Optical signals? Source impedances? Load impedance? If it's electrical on a coax or in a waveguide then the pro-equipment/lab- equipment solution is to use a gizmo called a "hybrid combiner" suitable for your desired bandwidth. I _think_ the same term is used for optical. If you want to combine the signals without power loss then pay attention -- some hybrid combiners incorporate some attenuation, and any device at all has an upper power limit that it can handle. -- www.wescottdesign.com
Reply by ●February 17, 20102010-02-17
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.A packaged op-amp is one device, but a pair of resistors it two? OK. Combine the resistors into a single package. Call it a center-tapped resistor.> He must be looking for a splitter/combiner, > assuming the signals are electrical and the center frequency is low enough.It's a nothing problem. If he doesn't know how to combine the signals, his next question will be about how to use the combination. Someone handed him a task he doesn't understand. He has my sympathy.> Hard to say.Hard to ask. This is an analog question put to a digital newsgroup by someone who doesn't even understand that noise doesn't influence the solution. Jerry -- Engineering is the art of making what you want from things you can get. �����������������������������������������������������������������������
Reply by ●February 17, 20102010-02-17
On Feb 16, 10:10�pm, rgh <mailme....@rediffmail.com> 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 > rhgMany microwave companies sell power combiners/dividers. Below is a link to a 2 way combiner/divider that works from DC to 6 GHz. What's the minimum freq you need to support? Do you have isolation and insertion loss requirements? http://www.ifengineering.com/html/powerdiv.htm You can also try minicircuits.com and miteq.com. Darol Klawetter
Reply by ●February 17, 20102010-02-17
Darol Klawetter wrote:> On Feb 16, 10:10 pm, rgh <mailme....@rediffmail.com> 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 > > Many microwave companies sell power combiners/dividers. Below is a > link to a 2 way combiner/divider that works from DC to 6 GHz. What's > the minimum freq you need to support? Do you have isolation and > insertion loss requirements? > > http://www.ifengineering.com/html/powerdiv.htm > > You can also try minicircuits.com and miteq.com.rgh says that he needs a 6 GHz bandwidth. We don't know if that is some low frequency to 6 GHz, or, say, from 100 t0 106 GHz. Jerry -- Engineering is the art of making what you want from things you can get. �����������������������������������������������������������������������
Reply by ●February 17, 20102010-02-17
On Wed, 17 Feb 2010 11:35:41 -0500, Jerry Avins wrote:> Darol Klawetter wrote: >> On Feb 16, 10:10 pm, rgh <mailme....@rediffmail.com> 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 >> >> Many microwave companies sell power combiners/dividers. Below is a >> link to a 2 way combiner/divider that works from DC to 6 GHz. What's >> the minimum freq you need to support? Do you have isolation and >> insertion loss requirements? >> >> http://www.ifengineering.com/html/powerdiv.htm >> >> You can also try minicircuits.com and miteq.com. > > rgh says that he needs a 6 GHz bandwidth. We don't know if that is some > low frequency to 6 GHz, or, say, from 100 t0 106 GHz. > > Jerryrgh left out a lot, which is why he's getting the "Rorschach test" responses. Sure would be nice if he'd expand on his question. -- www.wescottdesign.com
