Patent ID: 7215283

Claim:
A antenna arrangement comprising a substantially planar patch conductor ( 102 ), having first ( 106 ) and second ( 108 ) connection points for connection to radio circuitry and a slot ( 202 ) incorporated between the points, and a ground plane ( 104 ), wherein the antenna arrangement operates in a first mode having a first operating frequency when the second connection point ( 108 ) is connected to the ground plane ( 104 ) and in a second mode having a second operating frequency when the second connection ( 108 ) point is not connected to the ground plane ( 104 ), and wherein a variable impedance having a range of values between zero and infinite impedance ( 514 ) is connected between the second connection point ( 108 ) and ground, thereby providing operational frequencies of the antenna arrangement between the first and the second operating frequencies, without changing the physical dimensions of the planar patch conductor.