EP0777293A1
Expired / Lapsed
EP
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Chip antenna having multiple resonance frequencies
Assignee: Murata Manufacturing Co Ltd
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Filing: 1996-11-14
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Granted: —
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Expires: 2016-11-14
Abstract
Abstract A chip antenna (10) comprising a substrate (11) comprising at least one material selected from dielectric materials and magnetic materials, at least two conductors (12a, 12b) formed on at least one surface of the substrate (11) or inside the substrate, and at least one feeding terminal (15) provided on the surface of the substrate (11) for applying a voltage to the conductors.
Inventors
- 👤 Kenji Asakura
- 👤 Harufumi Mandai
- 👤 Teruhisa Tsuru
- 👤 Seiji Kanba
- 👤 Tsuyoshi Suesada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 11:06
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/30; H01Q1/00; H01Q1/36; H01Q1/362; H01Q1/38; H01Q5/00; H01Q5/30; H01Q5/307; H01Q5/314; H01Q5/321; H01Q5/342; H01Q5/357; H01Q5/364; H01Q5/371
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
101 words
A chip antenna (10; 20; 30),comprising: a substrate (11; 21; 31) comprising at least one of a dielectric material and a magnetic material; a first conductor (12a; 22a; 32a) disposed on at least one of a surface of said substrate (11; 21; 31) and inside said substrate; a second conductor (12b; 22b; 32b) disposed on at least one of a surface of said substrate (11; 21; 31) and inside said substrate; and at least one feeding terminal (15, 33a; 33b) provided on the surface of said substrate (11; 21; 31) for applying a voltage to at least one of said conductors.
Claim 2
Dependent Claim
22 words
A chip antenna (10) according to claim 1, wherein said first and second conductors (12a, 12b) connect with each other in series.
Claim 3
Dependent Claim
22 words
A chip antenna (20) according to claim 1, wherein said first and second conductors (22a, 22b) connect with each other in parallel.
Claim 4
Dependent Claim
22 words
A chip antenna (20; 30) according to one of claims 1 to 3, wherein said first conductor (22a; 32a) comprises a spiral.
Claim 5
Dependent Claim
22 words
A chip antenna (20; 30) according to one of claims 1 to 4, wherein said second conductor (22b; 32b) comprises a spiral.
Claim 6
Dependent Claim
20 words
A chip antenna (10) according to one of claims 1 to 3, wherein said first conductor (12a) is meanderingly formed.
Claim 7
Dependent Claim
20 words
A chip antenna (10) according to one of claims 1 to 3, wherein said second conductor (12b) is meanderingly formed.
Claim 8
Dependent Claim
33 words
A chip antenna (10; 20; 30) according to one of claims 1 to 7, wherein said chip antenna further comprises at least one fixing terminal to fix said substrate to a mounting board.
Claim 9
Dependent Claim
56 words
A chip antenna (30) according to claim 1, wherein a first feeding terminal (33a) is provided on the surface of said substrate (31) for applying a voltage to said first conductor (32a), and a second feeding terminal (33b) is provided on the surface of said substrate (31) for applying a voltage to said second conductor (32b).
Claim 10
Dependent Claim
20 words
A chip antenna (10; 20; 30) according to claim 1, wherein the substrate comprises a plurality of layers (13a-13e; 23a-23e).
Claim 11
Dependent Claim
43 words
A chip antenna (10) according to claim 10, wherein the first conductor (12a) is disposed on a surface of a first layer (13d) and the second conductor (12b) is disposed on a surface of a second layer (13b), said layers being laminated together.
Claim 12
Dependent Claim
33 words
A chip antenna (10) according to claim 11, wherein the first and second conductors (12a, 12b) are coupled together by a conductive through hole (14) disposed through at least one of the layers.
Claim 13
Dependent Claim
92 words
A chip antenna (20) according to claim 10 wherein portions of said first conductor (22a) are disposed on at least two layers, portions of said second conductor (22b) are disposed on at least two layers, a conductive through hole being provided in at least one of said layers connecting respective portions of the first conductor (22a) together when the layers are laminated together and a conductive through hole being provided in at least one of said layers connecting respective portions of the second conductor (22b) together when the layers are laminated together.
Claim 14
Dependent Claim
29 words
A chip antenna (10; 20; 30) according to one of claims 1 to 13, wherein said chip antenna has a plurality of resonance frequencies due to said two conductors.
Claim 15
Dependent Claim
23 words
A chip antenna (30) according to claim 1, wherein the first and second conductor (32a, 32b) each have a feeding terminal (33a, 33b).
Claim 16
Dependent Claim
35 words
A chip antenna (10; 20; 30) according to one of claims 1 to 15, wherein at least one of said conductors (12b; 22a, 22b; 32a, 32b) has a free end (17; 28a, 28b; 35a, 35b).
Claim 17
Dependent Claim
24 words
A chip antenna (20; 30),according to claim 1, wherein both said conductors (22a, 22b; 32a, 32b) have a free end (28a, 28b; 35a, 35b).
Claim 18
Dependent Claim
29 words
A chip antenna (10, 20, 30) according to one of claims 1 to 17, wherein the conductors (12a, 12b; 22a, 22b; 32a, 32b) comprise copper or a copper alloy.
Claim 19
Dependent Claim
30 words
A chip antenna (10, 20, 30) according to one of claims 1 to 18, wherein the substrate (11; 21; 31) comprises a combination of a dielectric and a magnetic material.
Claim 20
Dependent Claim
25 words
A chip antenna (10; 20; 30) according to one of claims 1 to 19, wherein the dielectric material comprises barium oxide, aluminum oxide and silica.
Claim 21
Dependent Claim
28 words
A chip antenna (10; 20; 30) according to one of claims 1 to 19, wherein the dielectric material comprises at least one of titanium oxide and neodymium oxide.
Claim 22
Dependent Claim
27 words
A chip antenna (10; 20; 30) according to one of claims 1 to 21, wherein the magnetic material comprises at least one of nickel, cobalt and iron.
Claim 23
Dependent Claim
17 words
A chip antenna (20; 30) according to claim 1, wherein the chip antenna has three resonance frequencies.
Claim 24
Dependent Claim
33 words
A chip antenna according to claim 1, wherein the substrate is mounted on a board extending in a first direction, the conductors being arranged to have a longitudinal extent in the first direction.
Claim 25
Dependent Claim
39 words
A chip antenna according to claim 1, wherein the substrate is mounted on a board extending in a first direction, the conductors being arranged to have a longitudinal extent in a second direction substantially perpendicular to the first direction.
Claim 26
Dependent Claim
34 words
A chip antenna according to claim 23, wherein at least two of the resonance frequencies are spaced close together so that an area of extended bandwidth can be achieved near the two resonance frequencies.
Claim 27
Dependent Claim
21 words
A chip antenna (10; 20; 30) according to one of claims 1 to 26, wherein the substrate comprises a rectangular parallelopiped.
Claim 28
Dependent Claim
20 words
A chip antenna (20; 30) according to claim 4 or 5, wherein said spiral conductor has a rectangular cross section.
Claim 29
Dependent Claim
15 words
A chip antenna according to claim 5, wherein said spiral conductor has a rectangular cross-section.
Claim 30
Dependent Claim
97 words
A chip antenna (10; 20; 30) comprising: a substrate (11; 21; 31) comprising at least one of a dielectric material and a magnetic material; a plurality of conductors( 12a, 12b, 22a; 22b, 32a; 32b) disposed on at least one of a surface of the substrate (11; 21;31) and inside the substrate; at least one feeding terminal (15; 33a, 33b) provided on the surface of the substrate for applying a voltage to at least one of the conductors; and said plurality of conductors (12a, 12b; 22a, 22b; 32a, 32b) providing said antenna with a plurality of resonance frequencies.
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