Three dimensional, dual band, planar inverted-F antenna formation

An antenna 1 comprises a ground portion 3 connected to a radiating portion 4 by a connection portion 2, where the connection portion 2 is also connected to a signal feed portion 22 and where there is a first radiating extending portion 45 connected to the radiating portion 4 and there is a second radiating extending portion 42 connected at an angle relative to the radiating portion 4. The radiating portion 4 and the extending portion 45 may be in a plane parallel to that of the ground portion 3. The connection portion 2 and feed 22 may be in a common plane which may be perpendicular or at some other angle relative to the ground portion 3 or radiating portion 4. The second radiating extending portion 42 may be perpendicular to the radiating portion 4. The said antenna portions may be shaped planar conductive elements connected and arranged to provide a simple, compact, dual frequency antenna with adjustable impedance matching.