SMA CONNECTOR AND WAVEGUIDE PORT DIFFERENCE

[memince]

Hello, I have designed a broadband antenna, but there are serious differences between waveguide port and sma connector.
I wonder what I am doing wrong.

 

[lkminz]

Hi,

check the port impedance of waveguide port and port impedance of port attached to SMA connector. they must be different thats why there is difference in result.

 

[AlexBDB]

Is the wave port the good size ?? with integration line between ground ant microstrip ??

 

[volker@muehlhaus]

waveguide port and sma connector.

Your result shows total reflection.
Where/how is the port defined inside the SMA connector?
Do both conductors contact the PCB properly?

 

[vfone]

Yes, looks like there is not proper connection, but in the same time may be an accidental design short inside of the SMA structure.