Patent ID: 6313800
Filing Date: 2001-11-06
Classification: G01R,G01S,H04N

Abstract:
An antenna of adjustable span for receiving broadband signals, the antenna comprising:a base;a first elongated antenna rod of a length;a second elongated antenna rod of a length, the first elongated antenna rod being slidably attached to the second elongated antenna rod in a parallel orientation to the second elongated antenna rod, allowing the first elongated antenna rod to slide in a parallel fashion from a first position where the first elongated antenna overlaps the second elongated antenna rod a first amount to a second position where the first antenna rod overlaps the second antenna rod a second amount, the second amount of overlap being smaller than the first amount of overlap, thereby adjust the span of the antenna;an electrical contact connected to said first elongated antenna rod; andan electrical contact connected to said second elongated antenna rod, so that the antenna is tuned to a desired wavelength by adjusting the span of the antenna by selectively positioning said first elongated antenna rod next to said second elongated antenna rod.