Antenna matching circuit, mobile communication device including antenna matching circuit, and dielectric antenna including antenna matching circuit
AssigneeTaiyo Yuden Co., Ltd.
InventorTatsuya Imaizumi
Life of this patent
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Abstract
In an antenna matching circuit including a parallel resonant section connected to a radiation element constituting an antenna, the parallel resonant section includes a series resonant portion composed of an inductance component and a capacitance component. The series resonant portion realizes antenna matching and band widening. The parallel resonant section can be inserted in a feeder line connected to the radiation element or inserted in a GND line connected to the radiation element.
Claims15
A dielectric antenna in which a radiation element pattern and a parallel resonant type matching section connected to said radiation element pattern are formed on a dielectric substrate, wherein said matching section comprises:
- a series resonant portion composed of a first equivalent inductance pattern and a capacitive coupling portion;
- and
- a second equivalent inductance pattern connected in parallel with said series resonant portion.
An antenna matching circuit comprising a parallel resonant section which is connected to a radiation element constituting an antenna,
- wherein said parallel resonant section includes a series resonant portion composed of an inductance component and a capacitance component, wherein said parallel resonant section is inserted in a GND line connected to said radiation element;
- and
- wherein at least a portion of said parallel resonant section is disposed on a dielectric substrate with the radiation element.
A communication device comprising a radiation element comprising an antenna, an antenna matching circuit connected to said radiation element, and a power feeding means for feeding power to said radiation element,
- wherein said matching circuit is formed by a parallel resonant circuit which includes a series resonant portion composed of an inductance component and a capacitance component;
- and
- wherein a portion of said matching circuit is disposed on a dielectric substrate with said antenna.
An antenna comprising:
- a parallel resonant type matching circuit connected to a radiation element, wherein said matching circuit includes a series resonant portion composed of an inductance component and a capacitance component;
- wherein said matching circuit is inserted in a GND line connected to said radiation element;
- and
- wherein a portion of said matching circuit is formed on a dielectric substrate with said radiation element.
Dependencies are inferred from the claim text.