Patent ID: 6243592
Filing Date: 2001-06-05
Classification: H01Q,H04B

Abstract:
A portable radio comprising:a case;a circuit board on which a circuit is provided, said circuit board being attached to said case;an antenna radiation element formed from a thin metal plate, said antenna radiation element being mounted on the internal wall of said case and spaced from the circuit board in a direction perpendicular to a main surface of the circuit board, and said antenna radiation element including a branch where one end of a longer radiation element is connected to one end of a shorter radiation element, and the other ends of the longer and shorter radiation elements which are open ends are positioned in close proximity to each other to form a gap therebetween, and wherein impedance matching is accomplished by means of coupling capacitance developed in the gap, and power is fed to the branch; anda power feed terminal which enables an electrical connection between said antenna radiation element and said circuit provided on the circuit board.