Patent ID: 6636181
Filing Date: 2003-10-21
Classification: G06F,H01Q

Abstract:
An apparatus, comprising:a first antenna and a second antenna; a first member which houses a first circuit and said first antenna, wherein said first circuit couples a high-frequency signal to said first antenna, and wherein said first circuit is a circuit selected from the group consisting of: a transmitter, a receiver, and a signal generator; and a second member, movably attached to said first member, and to which said second antenna is attached, wherein said second antenna faces said first antenna in at least one engagement position between said second member and said first member, the engagement positions characterized in that: the high-frequency signal is coupled between said first antenna and said second antenna, and the distance between said first antenna and said second antenna is greater than zero and less than about &lgr;/8, where &lgr; is the wavelength of the high-frequency signal; wherein said first member and said second member are rotatably attached by a cylindrical joint, and wherein said first antenna is disposed along the center axis of the cylindrical joint, and wherein said second antenna is disposed coaxially relative to said first antenna.