ANTENNA MULTIPLEXER AND PORTABLE RADIO EQUIPMENT USING THE SAME

摘要

PROBLEM TO BE SOLVED: To simultaneously satisfy impedance matching, an antenna gain and a radiation pattern in a desired frequency by providing polygonal radiation elements having spatial extension at the tip of a feeding pin through a capacitive element. SOLUTION: A micro strip plane antenna (MSA) 1 is provided with the feeding pin 1a, the patch-like radiation element 1b, a dielectric substrate 1c and a ground conductor (conductor board) 4 provided at the back (other face) of the dielectric substrate 1c. The capacitive element 7 is connected to the upper end of the feeding pin 1a near the pin. The first polygonal radiation element 9 is connected to the feeding pin la through the capacitive element 7. The second polygonal radiation element 10 is similarly connected to the feeding pin 1a through the capacitive element 7. The first polygonal radiation element 9 and the second polygonal radiation element 10 are bent in a horizontal direction from the upper end of the capacitive element 7 and in a vertical direction for several times and spatial extension is given on MSA1.