mixing signal with RF carrier

[actra]

hello
suppose that i have a 1.3 GHZ carrier as the output from a PLL

and i have asource of data and i want to modulate it with this carrier
the data bandwidth is 2 MHZ

is it possible to mixthem one time ? i didnt find such an ic to mix them ?
any suggestions ?

thank u vmuch

 

[vfone]

One option is to modulate the VCO, that is part of your PLL.

 

[FANT]

If you just mix them and supposing that all the elements are linear, at the output you will have the same 2 MHz and 1,3 GHz.
It depend on wich type of modulation you need, the circuits can be very different.
For example you can modulate the 1,3 GHz with a diode mixer, with an attenuator, modulating directly the VCO voltage, etc, having different modulations.
If you can give us more info you will have more help.

Mandi

 

[actra]

the data source is modulated by biphase shift keying//

the output of the vco is 1.3 GHZ

i want to mix them to produce a signal 1.3G (+/-) 1 MHZ...
ithink its very simple...
no modulation technique is required .. just mixing