Method and apparatus for radio frequency (RF) metrology

A radio frequency (RF) probe head for detecting RMS electrical and magnetic fields in a sampled transmission line, said probe head comprising:

• a conductive housing, a pair of RF ports configured to couple an RF signal through said housing;
• circuitry within said housing configured to produce a first DC output proportional to a root-mean-square (RMS) value of an electric field produced by said RF signal inside said conductive housing and to produce a second DC output proportional to an RMS value of a magnetic field produced by said RF signal inside said conductive housing;
• and
• a pair of ports configured to couple said first DC output and said second DC output out of said conductive housing.

A method for measuring radio frequency (RF) power in an RF probe head comprising:

• passing RF power through an RF probe head having a conductive housing;
• sensing electric and magnetic fields produced by the RF power within the conductive housing to produce a first electrical signal representative of the electric field and a second electrical signal representative of the magnetic field within the housing;
• and
• processing the first electrical signal and the second electrical signal to produce a first DC output representative of a root-mean-square (RMS) value of the electrical field and a second DC output representative of an RMS value of the magnetic field;
• wherein said processing takes place entirely within the conductive housing.