The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2009
Filed:
Dec. 07, 2007
William H. Walker, Madison, AL (US);
William H. Walker, Madison, AL (US);
Baron Services, Inc., Huntsville, AL (US);
Abstract
A variable ratio power divider (VRPD) used for adjusting a calibration signal for a dual polarization radar system has been developed. The VRPD includes an input line that receives a calibration signal and splits the calibration signal into two separate test signals that have a 0° phase shift between them. The VRPD also includes a horizontal polarization output port for a horizontal calibration signal and a vertical polarization output port for a vertical calibration signal. A waveguide switch receives one of the test signals. If the waveguide switch is operating in an open position, it passes the test signal through a variable 0°-180° phase shifter. This evenly divides the power of the test signals between the horizontal and vertical output ports. If the waveguide switch is operating in a closed position, it causes the test signal to bypass the phase shifter so that the entire power of the both test signals is directed entirely to either the horizontal phase output port or the vertical phase output port.