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To GOTWW: Sounds interesting. Is there a reference text you can refer me to that elaborates on this? I'm a long time engineer but relatively new to RF. Thanks

To "logbook", The main reason I want to use a 10dbm mixer is that I happen to have a few of these in my parts stash. Your suggestion of the series RC is basically the diplexer scheme I mentioned earlier. It should work but adds a little complexity. I am trying to keep the design as simple as...

To GOTWW: Could you explain more on your suggestion to adjust line length? Do you mean the length of the PCB trace? How do you calculate the proper one to help the mismatch?

In response to "logbook", frequency pulling is a MiniCircuits spec for how much the output frequency of the VCO will shift as a function of load mismatch. Also, as you point out, I meant to say second harmonic. I am laying out a prototype PCB at this point. I talked to MiniCircuits and they...

I have the output of a MiniCircuits ROS 1500 VCO (output approx 9dbm) feeding into a MiniCircuits LFCN-1325 low pass filter. In the stopband the VSWR of the filter is 40. Since this will cause large refected signals in the stopband, and since the first harmoinic of the VCO is at about 0dbm...

My application requires mixing at 1.5GHz. I am currently just experimenting with the MiniCircuits parts to become familiar with RF mixing. I am using a MiniCircuits VCO ROS-1500 (8.7dBm)for the LO drive. I am using a ROS-2160W (5dBm) as a wideband source.The mixer I am using is a SYM-25DLHW...

My circuit has a two Minicircuit VCOs driving the RF and LO ports of a Minicircuits mixer. The VCO signals are very clean when tested separately, but when I hook them up to the mixer and connect the IF port to a spectrum analyzer there are all kind of unwanted components. The IF is at 1Ghz. I...