Patent EP0738023A2 successfully refreshed from Google Patents.
EP0738023A2
Expired / Lapsed
EP
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Antenna device
Assignee: Murata Manufacturing Co Ltd
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Filing: 1996-04-11
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Granted: —
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Expires: 2016-04-11
Abstract
Abstract An antenna device (10) includes a dielectric substrate (17), at least one peripheral antenna circuit (18,19) formed inside or on a surface of the dielectric substrate (17), and a radiator (11) for receiving or transmitting a signal. The radiator (11) has a radiating portion (12) and at least a pair of opposed fixing portions (13,14) extending from the radiating portion (12) so as to form a square-bottomed U-shaped cross section. The pair of opposed fixing portions (13,14) are attached to side faces of the dielectric substrate (17) such that the radiating portion (11) and an upper surface of the dielectric substrate (17) create a space (22).
Inventors
- 👤 Teruhisa Tsuru
- 👤 Harufumi Mandai
- 👤 Koji Shiroki
- 👤 Kenji Asakura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 07:24
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0421; H01Q23/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
114 words
An antenna device (10) comprising: a dielectric substrate (17); at least one peripheral antenna circuit (18,19) formed at the dielectric substrate (17); and a radiator (11) connected to said at least one peripheral antenna circuit, for carrying a signal, said radiator having a radiating portion (12) and at least a pair of fixing portions (13,14) depending from the radiating portion (12) toward said dielectric substrate (17) so that said radiator has a substantially square-bottomed U-shaped cross-sectional shape, the pair of fixing portions (13,14) being attached to opposing side faces of the dielectric substrate (17), such that the radiating portion (12) and an upper surface of the dielectric substrate (17) create a space (22) therebetween.
Claim 2
Dependent Claim
48 words
The antenna device (10) according to claim 1, wherein the peripheral antenna circuit is an antenna switch circuit (18) including at least one diode (18e) and one resistor (18f), and the diode (18e) and the resistor (18f) are formed on the upper surface of the dielectric substrate (17).
Claim 3
Dependent Claim
32 words
The antenna device (10) according to claim 2, wherein the diode (18e) and the resistor (18f) are formed in substantially the central portion of the upper surface of the dielectric substrate (17).
Claim 4
Dependent Claim
26 words
The antenna device (10) according to claim 3, further comprising an additional portion of said antenna switch circuit which is formed inside the dielectric substrate (17).
Claim 5
Dependent Claim
22 words
The antenna device (10) according to claim 2, further comprising a band pass filter circuit (19) formed inside the dielectric substrate (17).
Claim 6
Dependent Claim
23 words
The antenna device (10) according to claim 1, wherein said at least on peripheral antenna circuit is formed inside the dielectric substrate (17).
Claim 7
Dependent Claim
27 words
The antenna device (10) according to claim 1, wherein said at least one peripheral antenna circuit is formed on an upper surface of the dielectric substrate (17).
Claim 8
Dependent Claim
31 words
The antenna device (10) according to claim 7, further comprising an additional portion of said at least one peripheral antenna circuit, said additional portion being formed inside the dielectric substrate (17).
Claim 9
Dependent Claim
25 words
The antenna device (10) according to claim 7 or 8, further comprising a second peripheral antenna circuit which is formed inside the dielectric substrate (17).
Claim 10
Dependent Claim
162 words
An antenna device (10) comprising: a dielectric substrate (17) having external electrodes and connecting electrodes (20,21a,21b,21c) at side surfaces thereof; circuit elements (18a-18f, 19a-19d) forming at least two peripheral antenna circuits (18,19), said circuit elements being provided in the interior and on the surface of the dielectric substrate (17); and a radiator (11) whose cross-sectional shape is substantially a square-bottomed U-shape, the radiator (11) including a substantially flat radiating portion, a pair of fixing portions extending toward said dielectric substrate (17) from a pair of opposing end portions of the radiating portion (11), and a signal feed terminal (15) and ground terminal (16) formed integrally with a distal end of one of the fixing portions (13), wherein the radiator (11) is attached to the dielectric substrate (17) with a space (22) provided between the radiating portion of the radiator (12) and an upper surface of the dielectric substrate (17) with the external electrodes (20,21a,21b,22c) being exposed to the outside of the radiator.
Claim 11
Dependent Claim
45 words
The antenna device (10) according to claim 10, wherein the circuit elements comprise at least a diode (18e) and a resistor (18f), the diode (18e) and the resistor (18f) being formed in a substantially central portion of the upper surface of the dielectric substrate (17).
References Cited (Backward Citations)
No citation records indexed.
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