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Post subject: Multiplying two signals with
Posted: Wed Jul 18, 2012 5:31 am
Joined: Wed Jul 18, 2012
Hi, im new to this forum and i am not sure i am posting
this question in the right place but here it goes.
have two baseband signals- u1(t) = A1(t)cos(wt+p(t)) and
u2(t) = A2(t)cos(wt-p(t)),
where A1 and A2 are the
amplitude changes in time in its band(which is 100 MHz for
example) and p(t) is the phase changes in time in their
both signals reside in frequency - w. so they
basicly overlap if put together.
now we multiply the
first on the second and filter out the low frequencies -
so basicly we receive
question is this- if i mentally divide u1 by half (take
the first 50 MHz of the band) and u2 by half and then
multiply all 4 halfs between themselves (and take hgher
frequencies) will i receive the initial output -
Thanks in advance.