Patent EP0621653A2 successfully refreshed from Google Patents.
EP0621653A2
Expired / Lapsed
EP
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Surface-mountable antenna unit
Assignee: Murata Manufacturing Co Ltd
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Filing: 1994-04-20
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Granted: —
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Expires: 2014-04-20
Abstract
Abstract A surface-mountable antenna unit including a dielectric substrate (21) having a rectangular plane shape which is provided on a side surface (21b) and/or a bottom surface thereof with a ground electrode (23), and a radiator (22), provided with a radiating part having a substantially rectangular plane shape, which is fixed to the dielectric substrate (21) so that the radiator (22) is opposed to a top surface (21a) of the dielectric substrate (21), with a feed part (24) provided on a side surface (21c) of a laminate which is formed by the dielectric substrate (21) and the radiator (22). <IMAGE>
Inventors
- 👤 Teruhisa Tsuru
- 👤 Hisatake Okamura
- 👤 Harufumi Mandai
- 👤 Mitsuhide Katou
- 👤 Ken Tonegawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 20:03
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/30; H01Q9/42; H01Q9/0407; H01Q9/0421
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
105 words
A surface-mountable antenna unit comprising: a dielectric substrate having a top surface, a bottom surface and side surfaces; a ground electrode being formed on at least one of a side surface and a bottom surface of said dielectric substrate; a radiator, having a major surface and consisting of a material having low conductor loss, being fixed to said dielectric substrate so that its major surface is opposed to the top surface of said dielectric substrate; and a feed part being provided at least on one of a side surface and a bottom surface of a laminate being formed by said dielectric substrate and said radiator.
Claim 2
Dependent Claim
21 words
A surface-mountable antenna unit in accordance with claim 1, wherein the bottom surface of said dielectric substrate is to be surface-mounted.
Claim 3
Dependent Claim
30 words
A surface-mountable antenna unit in accordance with claim 1, wherein said major surface of said radiator is opposed to be in contact with said top surface of said dielectric substrate.
Claim 4
Dependent Claim
33 words
A surface-mountable antenna unit in accordance with claim 1, wherein said major surface of said radiator is opposed to said top surface of said dielectric substrate through a space of a prescribed space.
Claim 5
Dependent Claim
64 words
A surface-mountable antenna unit in accordance with claim 1, wherein said radiator comprises a radiating part having said major surface, and at least one fixed part extending from at least one edge of said radiating part toward said dielectric substrate, said at least one fixed part being fixed to said side surface of said dielectric substrate, thereby fixing said radiator to said dielectric substrate.
Claim 6
Dependent Claim
38 words
A surface-mountable antenna unit in accordance with claim 5, wherein said major surface of said radiating part of said radiator is opposed to said top surface of said dielectric substrate through a space layer of a prescribed thickness.
Claim 7
Dependent Claim
31 words
A surface-mountable antenna unit in accordance with claim 5, wherein said major surface of said radiating part of said radiator is superposed on said first major surface of said dielectric substrate.
Claim 8
Dependent Claim
32 words
A surface-mountable antenna unit in accordance with claim 6 or 7, wherein a feed terminal serving as said feed part is integrally formed on a forward end of one said fixed part.
Claim 9
Dependent Claim
35 words
A surface-mountable antenna unit in accordance with claim 6 or 7, further comprising a feed terminal and a ground terminal being integrally formed on forward end or ends of identical or different said fixed parts.
Claim 10
Dependent Claim
43 words
A surface-mountable antenna unit in accordance with claim 9, wherein said radiating part has a rectangular plane shape being provided with longer and shorter sides, said feed terminal and said ground terminal being arranged on the same said side of said radiating part.
Claim 11
Dependent Claim
27 words
A surface-mountable antenna unit in accordance with claim 10, wherein said feed terminal and said ground terminal are arranged on said longer side of said radiating part.
Claim 12
Dependent Claim
27 words
A surface-mountable antenna unit in accordance with claim 10, wherein said feed terminal and said ground terminal are arranged on said shorter side of said radiating part.
Claim 13
Dependent Claim
42 words
A surface-mountable antenna unit in accordance with claim 9, wherein said radiating part has a rectangular plane shape being provided with longer and shorter sides, said feed terminal and said ground terminal being arranged on different said sides of said radiating part.
Claim 14
Dependent Claim
26 words
A surface-mountable antenna unit in accordance with claim 6 or 7, further comprising a capacitor being electrically connected between said ground electrode and said radiating part.
Claim 15
Dependent Claim
48 words
A surface-mountable antenna unit in accordance with claim 14, comprising a capacitor electrode being formed in said dielectric substrate and a ground electrode being arranged to overlap with said capacitor electrode through a dielectric substrate layer, said capacitor being formed by said capacitor electrode and said ground electrode.
Claim 16
Dependent Claim
43 words
A surface-mountable antenna unit in accordance with claim 6, further comprising a capacitor being electrically connected between said ground electrode and said radiating part, and said capacitor being formed by a capacitor element being carried on said top surface of said dielectric substrate.
Claim 17
Dependent Claim
58 words
A surface-mountable antenna unit in accordance with claim 6, further comprising a capacitor being electrically connected between said ground electrode and said radiating part said capacitor being formed by a pair of capacitor electrodes being formed on said top surface of said dielectric substrate at a prescribed distance and a dielectric layer being connected between said capacitor electrodes.
Claim 18
Dependent Claim
50 words
A surface-mountable antenna unit in accordance with claim 6, further comprising a capacitor being electrically connected between said ground electrode and said radiating parsaid capacitor being formed by an electrode being formed on said top surface of said dielectric substrate and a ground electrode being formed in said dielectric substrate.
Claim 19
Dependent Claim
42 words
A surface-mountable antenna unit in accordance with claim 6, further comprising space holding means for mounting said first major surface of said radiating part of said radiator on said top surface of said dielectric substrate through a space of a prescribed thickness.
Claim 20
Dependent Claim
47 words
A surface-mountable antenna unit in accordance with claim 19, wherein said space holding means is formed by a stop member extending from an edge of said radiating part toward said top surface of said dielectric substrate and being formed on said top surface of said dielectric substrate.
Claim 21
Dependent Claim
35 words
A surface-mountable antenna unit in accordance with claim 20, wherein said radiating part has a rectangular plane shape, said stop member being formed on a side being different from that provided with said fixed part.
Claim 22
Dependent Claim
35 words
A surface-mountable antenna unit in accordance with claim 20, wherein said radiating part has a rectangular plane shape, said stop member being formed on the same said side as that provided with said fixed part.
Claim 23
Dependent Claim
46 words
A surface-mountable antenna unit in accordance with claim 22, wherein a pair of stop members are arranged on both sides of at least one said fixed part, forward ends of said pair of stop members being in contact with said top surface of said dielectric substrate.
Claim 24
Dependent Claim
50 words
A surface-mountable antenna unit in accordance with claim 20, wherein a stop surface part extending in parallel with said top surface of said dielectric substrate is formed on a forward end of said stop member, said stop surface part being in contact with said top surface of said dielectric substrate.
Claim 25
Dependent Claim
68 words
A surface-mountable antenna unit in accordance with claim 6, wherein said radiator has a radiating part and a side wall part being provided around said radiating part in the form of a closed ring, and a flange part is formed on a forward end of said side wall part, said flange part being fixed to said top surface of said dielectric substrate thereby forming said space holding means.
Claim 26
Dependent Claim
40 words
A surface-mountable antenna unit in accordance with claim 6, wherein said space holding means is formed by a projection being on said top surface of said dielectric substrate so that its forward end is in contact with said radiating part.
Claim 27
Dependent Claim
31 words
A surface-mountable antenna unit in accordance with claim 26, wherein said projection is defined by first and second strip-shaped projections being arranged along a pair of edges of said dielectric substrate.
Claim 28
Dependent Claim
39 words
A surface-mountable antenna unit in accordance with claim 26, wherein said projection is an annular projection being formed on said top surface of said dielectric substrate so that its forward end surface is in contact with said radiating part.
Claim 29
Dependent Claim
28 words
A surface-mountable antenna unit in accordance with claim 26, wherein a plurality of said projections are formed on said top surface of said dielectric substrate at prescribed distances.
Claim 30
Dependent Claim
35 words
A surface-mountable antenna unit in accordance with claim 6, further comprising a dielectric layer being arranged in said space between said major surface of said radiating part and said top surface of said dielectric substrate.
Claim 31
Dependent Claim
20 words
A surface-mountable antenna unit in accordance with claim 30, wherein said dielectric layer is arranged to fill up said space.
Claim 32
Dependent Claim
23 words
A surface-mountable antenna unit in accordance with claim 6, further comprising a circuit element being arranged on said dielectric substrate in said space.
Claim 33
Dependent Claim
26 words
A surface-mountable antenna unit in accordance with any one of claim 6, 7 or 31, further comprising a circuit element being stored in said dielectric substrate.
Claim 34
Dependent Claim
20 words
A surface-mountable antenna unit in accordance with claim 6 or 7, wherein said radiator is formed by a metal plate.
Claim 35
Dependent Claim
100 words
A surface-mountable antenna unit in accordance with claim 1, further comprising a shield electrode being formed on said dielectric substrate, said shield electrode being electrically connected to said ground electrode, and said radiator has a radiating part and an annular side wall part extending from an edge of said radiating part toward said dielectric substrate, a flange part being formed on a forward end of said annular side wall part, said flange part being electrically connected to and mechanically bonded with said shield electrode, thereby defining a space of a prescribed thickness between said radiating part and said dielectric substrate.
Claim 36
Dependent Claim
44 words
A surface-mountable antenna unit in accordance with claim 35, wherein said shield electrode and said ground electrode being formed on said side surface of said dielectric substrate are electrically connected with each other by a via hole electrode being formed in said dielectric substrate.
Claim 37
Dependent Claim
23 words
A surface-mountable antenna unit in accordance with claim 35, further comprising a capacitor being electrically connected between said ground electrode and said radiator.
Claim 38
Dependent Claim
48 words
A surface-mountable antenna unit in accordance with claim 35, comprising a capacitor electrode being formed in said dielectric substrate, and a ground electrode being arranged to overlap with said capacitor electrode through a dielectric substrate layer, said capacitor being formed by said capacitor electrode and said ground electrode.
Claim 39
Dependent Claim
35 words
A surface-mountable antenna unit in accordance with claim 35, wherein said capacitor is formed by a pair of capacitor electrodes being formed on said first major surface of said dielectric substrate at a prescribed distance.
Claim 40
Dependent Claim
37 words
A surface-mountable antenna unit in accordance with claim 35, wherein said capacitor is formed by an electrode being formed on said top surface of said dielectric substrate and a ground electrode being formed in said dielectric substrate.
References Cited (Backward Citations)
No citation records indexed.
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