Patent ID: 7528767

Claim:
A variable ratio power divider used for adjusting a calibration signal for a dual polarization radar system, comprising: an input line that receives a calibration signal and splits the calibration signal into a first test signal and a second test signal, where the test signals have a 0° phase shift; a horizontal polarization output port for a horizontal calibration signal; a vertical polarization output port for a vertical calibration signal; a waveguide switch that receives the first test signal; where the waveguide switch may be configured to operate in an open position and pass the first test signal through a variable 0°-180° phase shifter so that the power of the first and second test signals is evenly divided between the horizontal polarization output port and the vertical polarization output port; and where the waveguide switch may be configured to operate in a closed position and cause the first test signal to bypass the variable 0°-180° phase shifter so that the entire power of the first and second test signals is directed entirely to either the horizontal polarization output port or the vertical polarization output port.