Keating & Bennett, LLP
Signal processing circuit and antenna apparatus
To form a signal processing circuit and an antenna apparatus that do not need a circuit to adjust resonant frequency of a resonant circuit or resonant-frequency adjustment work and that are downsized, an antenna coil and a capacitor define an antenna resonant circuit. An impedance matching circuit including capacitors, a first coil, and a second coil is provided between the antenna resonant circuit and a wireless IC. The first coil and the second coil are magnetically coupled.
Murata Manufacturing Co., Ltd.
G H H H H
G06K H01Q H01Q H01Q H04B
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Katsumi Noboru
Taniguchi Kato