ADF7030-1 Differential LNA input matching

Hi WY.P,

Please refer to UG-957: ADF7030-1 Hardware Reference Manual for reference on the ADF7030-1 matching networks.

Regards,
Aldrich

I have already seen the file. But it not applies to the three questions I asked. Ultimately, I think I want to know how to test about Q1~Q3...

Regards,

WY.P

Hi WY.P,

The impedances on page 5 of the datasheet is valid for both separate and combined match. The LNA in RX Mode impedances is for both separate and combined match, while the LNA in Tx Mode is for combined match. Likewise, Optimum PA Load While in Transmit is for both combined and separate match, while PA Input Impedance While in Rx is for combined match.

The design for both combined and separate matching networks for PA and LNA is already available in the Hardware Reference Manual. I'm afraid you'd have to design and test your own matching network if you'd like to use otherwise.

Thanks,
Aldrich

Thank you. Aldrich!
A lot of help and concerns have been resolved!

There is another point to be asked about.

When measuring impedance with a network analyzer, Port1 is of course the ANT input, and does Port2 need to short-circuit the LNA1 pin and LNA2 pin to measure the impedance?

If you measure the LNA1 pin and LNA2 pin separately, you will still get other impedance values, so I don't know how to do. Because I handled for the first time ever with a Transceiver for me.

Great Thanks,
WY.P