Matching differential transmitter and receiver between PLL ADF4159 and PA ADF5901

The source ADF5901, LO output have 200 ohm differential impedance and the load (ADF4159) is 1k differential {page11 of rev E. datasheet}.

The reference design is routed without matching, but it obviously need matching. The simplest way is to parallel resistance in end of line to match line and receiver, but how must become ensure that the source can support this low resistor load? also this will cause power consumption, any idea will appreciated

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  • pair w/o

    What is it?

    Sorry for my English, I am not native speaker. w/o = without

    12mm line at 12GHz is not quite short. So be careful, use e.g. radius instead of refractions in the layout. But I think you know that.

    Forget LC transformer at 12GHz, I didn't know the frequency. The component values would be small. It think you find a transformer 1:2 at 12GHz but is not easy. Other way is any microwave structure, I am not sure if e.g. Branchline can be somehow recalculated and use as a balanced transformer. The question is if it is a good deal because of I.L. and time for final adjustment. If you have experiences...

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