On Wed, Oct 17, 2012 at 3:11 PM, Sean Breheny wrote: > Are you just looking to combine two signals together or are you > looking for mathematical accuracy of the summed voltage? > > There are several different main combiner designs, some of which > sacrifice overall amplitude for broad bandwidth, while others have > almost no losses but only work over a narrow bandwidth. > > Sean My application is to add two signals, 100 MHz and 120 MHz. The power is a few watts. The generator is a DDS box and the load is an acousto-optic modulator. - Martin K --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .