Patent ID: 6766141
Filing Date: 2004-07-20
Classification: G01S,H01Q,H04B

Abstract:
A method for communicating with the distal end of an electrically conducting pipe which comprises the steps of:(a) generating a radio frequency signal having a chosen frequency at the proximal end of the electrically conducting pipe such that the electrically conducting pipe radiates the signal at least in the vicinity of the distal end thereof; (b) reflecting the radiated radio frequency signal in the vicinity of the distal end of the electrically conducting pipe such that the reflected radio frequency signal is received by the conducting pipe and transmitted to the proximal end thereof; (c) modulating the reflected radio frequency signal in response to data received from the vicinity of the distal end of the electrically conducting pipe; and (d) detecting the modulated, reflected signal at the proximal end of the electrically conducting pipe.