INFORMATION TERMINAL DEVICE
First Claim
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1. An information terminal device for supporting a plurality of radio systems, comprising:
- a casing;
a wireless board; and
an antenna including a power feeding terminal and a plurality of resonant circuits, the plurality of resonant circuits being arranged to radiate radio waves;
whereinthe plurality of resonant circuits further define a matching circuit arranged to provide impedance matching between an impedance on a power feeding side as viewed from the power feeding terminal and a radiation impedance of a free space.
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Abstract
An information terminal device includes a casing, a wireless board, and an antenna arranged to utilize a plurality of radio systems. The antenna includes a power feeding terminal and a plurality of resonant circuits. The plurality of resonant circuits are arranged to radiate radio waves. The plurality of resonant circuits further define a matching circuit that provides impedance matching between an impedance on a power feeding side as viewed from the power feeding terminal and a radiation impedance of a free space.
78 Citations
6 Claims
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1. An information terminal device for supporting a plurality of radio systems, comprising:
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a casing; a wireless board; and an antenna including a power feeding terminal and a plurality of resonant circuits, the plurality of resonant circuits being arranged to radiate radio waves;
whereinthe plurality of resonant circuits further define a matching circuit arranged to provide impedance matching between an impedance on a power feeding side as viewed from the power feeding terminal and a radiation impedance of a free space. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification