Patent ID: 7057474
Filing Date: 2006-06-06
Classification: G01R,H01P

Abstract:
1. A transmission line apparatus comprising: an electrically conductive signal line; a first distributed capacitance distributed substantially uniformly along at least a portion of said signal line, wherein said first distributed capacitance comprises a first conductor disposed along said at least a portion of said signal line, and wherein said first conductor is electrically insulated from said signal line; and first variable capacitance means for providing an amount of capacitance that varies with a first control signal, wherein said first variable capacitance means is electrically connected to said first distributed capacitance, wherein said first variable capacitance means is electrically insulated from but capacitively coupled to said signal line, and wherein said first control signal is provided to said first variable capacitance means through said first conductor, and varying a capacitance of said first variable capacitance means varies a transmission delay of said signal line along said at least a portion of said signal line.