Surface mount antenna, method of manufacturing the surface mount antenna, and radio communication apparatus equipped with the surface mount antenna
First Claim
1. A surface mount antenna comprising:
- a substrate; and
a radiation electrode disposed on the substrate and arranged to perform an antenna function;
wherein the radiation electrode is disposed on four continuously connected surfaces of the substrate including a top surface, a bottom surface, and two shorter edge surfaces of the substrate, thereby defining a configuration in which the radiation electrode essentially surrounds an outer circumference of the substrate;
a slit is formed in the radiation electrode in a direction intersecting an outer circumferential direction of the substrate and extends across the whole width of the radiation electrode; and
at least one of two electrode ends located close to each other with the slit interposed therebetween is cut for adjusting the resonance frequency of the radiation electrode.
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Accused Products
Abstract
A surface mount antenna includes a substrate and a radiation electrode (having a predetermined resonance frequency) disposed on the substrate. An electrode is formed to cover four continuously connected surfaces including the front surface, the front end surface, the rear surface and the rear end surface of each substrate. Then, a dicer is used to cut a slit on the radiation electrode formed on the surface of the dielectric substrate. Here, the slit is arranged in a direction intersecting a direction α connecting the two end surfaces. Subsequently, the dielectric substrate is cut into a plurality of portions along the direction α, thus producing a plurality of surface mount antennas each including a substantially rectangular substrate and a radiation electrode formed essentially surrounding an outer circumference of the substrate. In this way, it is possible to produce a plurality of surface mount antennas in only one operation. Since each radiation electrode has a very simple shape, and since a dicer can be used to perform a high precision processing, it is easy to form each radiation electrode having a desired resonance frequency, by using a dicer to perform a cutting treatment to process the slit.
28 Citations
25 Claims
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1. A surface mount antenna comprising:
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a substrate; and
a radiation electrode disposed on the substrate and arranged to perform an antenna function;
whereinthe radiation electrode is disposed on four continuously connected surfaces of the substrate including a top surface, a bottom surface, and two shorter edge surfaces of the substrate, thereby defining a configuration in which the radiation electrode essentially surrounds an outer circumference of the substrate;
a slit is formed in the radiation electrode in a direction intersecting an outer circumferential direction of the substrate and extends across the whole width of the radiation electrode; and
at least one of two electrode ends located close to each other with the slit interposed therebetween is cut for adjusting the resonance frequency of the radiation electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of manufacturing a surface mount antenna, comprising the steps of:
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providing a substrate ;
forming an electrode to entirely cover top and bottom surfaces as well as two mutually opposite shorter edge surfaces of the substrate;
forming a slit in the electrode disposed on the surface of the substrate, the slit being formed by cutting with a dicer and so as to extend in a direction intersecting a direction connecting the two shorter edge surfaces;
cutting the dielectric substrate into a plurality of portions, using a dicer which cuts along the direction connecting the two shorter edge surfaces; and
producing a plurality of surface mount antennas each including a substantially rectangular substrate and a radiation electrode disposed so as to essentially surround the substantially rectangular substrate;
whereinwhen the dicer is used to cut the slit so that the slit is formed on the electrode attached to the surface of the substrate, said slit is formed in a position and has a width both corresponding to a predetermined resonance frequency of the radiation electrode of a surface mount antenna. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of manufacturing a surface mount antenna, comprising the steps of:
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providing a substrate;
forming an electrode to entirely cover top and bottom surfaces as well as two mutually opposite shorter edge surfaces of the substrate;
forming on the surface of the dielectric substrate an electrode having a slit formed in a direction intersecting a direction connecting the two shorter edge surfaces;
cutting the dielectric substrate into a plurality of portions, using a dicer which cuts along the direction connecting the two shorter edge surfaces; and
producing a plurality of surface mount antennas each including a substantially rectangular substrate and a radiation electrode disposed so as to essentially surround the substantially rectangular substrate;
whereinbefore the dielectric substrate is cut by a dicer into a plurality of portions, at least one of two electrode ends located close to each other with the slit interposed therebetween is cut by the dicer, so as to adjust the resonance frequency of the radiation electrode of each surface mount antenna to a predetermined resonance frequency. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification