The balun of nrf51822

[KING JAMES]

I simulated the balun of nrf51822 accroding to the referenced design of nrf51822 on the official website.
However,it showed the differential phase of the balun was not 180 degrees.
Please help me to find a solution,thanks.

[KING JAMES]

[KING JAMES]

[ketiljo]

Sorry, I have no idea what you do wrong here. 

Note that even if the impedance you get matches the recommended load impedance, you don't know how the harmonics are going to behave. Only real measurements will show that. 

[KING JAMES]

Please confirm it to you again.Is the impedance from point A  to NRF51822 50 ohms, or the load at point A 50 ohms?

[ketiljo]

The impedance, looking from the matching network, at A, into the load is 50 ohm. It's _not_ 50 ohm seen from the load into A.