EP0637094A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Antenna for mobile communication
Assignee: Panasonic Holdings Corp
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Filing: 1994-07-27
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Granted: —
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Expires: 2014-07-27
Abstract
Abstract An antenna of this invention comprises a first metal plate (102) having a slit (401), a second metal plate (103) opposed to the first metal plate (102) and electrically connected (104) to the first metal plate (102), two metal foils connected to the second metal plate, and a cable (105) for supplying feed signals to the first metal plate (102) and the second metal plate (103), the cable (105) including a first conductor connected to the first metal plate (102) via a capacitor (106) and a second conductor connected to the second metal plate (103).
Inventors
- 👤 Koichi Ogawa
- 👤 Tomoki Uwano
- 👤 Masao Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 06:20
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q1/38; H01Q1/27; H01Q1/273; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0421
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
70 words
An antenna for mobile communication comprising: a first metal plate; a second metal plate opposed to the first metal plate, and electrically connected to the first metal plate; and a cable for supplying feed signals to the first metal plate and the second metal plate, the cable including a first conductor connected to the first metal plate via a capacitor and a second conductor connected to the second metal plate.
Claim 2
Dependent Claim
49 words
An antenna for mobile communication according to claim 1, wherein the antenna further comprises a dielectric substrate having a through-hole formed between the first metal plate and the second metal plate, and the first metal plate and the second metal plate are connected to each other via the through-hole.
Claim 3
Dependent Claim
51 words
An antenna for mobile communication according to claim 1, wherein the first metal plate and the second metal plate are connected to each other by means of a metal wire, and the first metal plate and the second metal plate are fixed by the metal wire at a predetermined distance apart.
Claim 4
Dependent Claim
28 words
An antenna for mobile communication according to claim 3, further comprising a fixing means to fix the first metal plate and the second metal plate to each other.
Claim 5
Dependent Claim
17 words
An antenna for mobile communication according to claim 1, wherein the first metal plate has a slit.
Claim 6
Dependent Claim
25 words
An antenna for mobile communication according to claim 5, wherein the length of the slit is in the range of 20 mm to 60 mm.
Claim 7
Dependent Claim
44 words
An antenna for mobile communication according to claim 1, further comprising a first metal foil connected to a first end of the second metal plate, and a second metal foil connected to the second end opposite the first end of the second metal plate.
Claim 8
Dependent Claim
34 words
An antenna for mobile communication according to claim 7, wherein each of the length of the first metal foil and the second metal foil is in the range of 30 mm to 150 mm.
Claim 9
Dependent Claim
53 words
An antenna for mobile communication according to claim 7, further comprising a third metal foil connected to a third end interposed between the first end and the second end of the second metal plate, and a fourth metal foil connected to a fourth end opposite the third end of the second metal plate.
Claim 10
Dependent Claim
34 words
An antenna for mobile communication according to claim 9, wherein each of the length of the third metal foil and the fourth metal foil is in the range of 20 mm to 50 mm.
Claim 11
Dependent Claim
22 words
An antenna for mobile communication according to claim 1, wherein the shape of the first metal plate is a meander line configuration.
Claim 12
Dependent Claim
28 words
An antenna for mobile communication according to claim 9, wherein the shape of at least one of the first to fourth metal foils is a meander line configuration.
Claim 13
Dependent Claim
32 words
An antenna for mobile communication according to claim 1, wherein the first metal plate and the second metal plate have substantially the same sizes and are installed substantially parallel to each other.
Claim 14
Dependent Claim
30 words
An antenna for mobile communication according to claim 1, wherein each of the length and the width of the first metal plate is equal to or less than 65 mm.
Claim 15
Dependent Claim
30 words
An antenna for mobile communication according to claim 1, wherein the distance between the first metal plate and the second metal plate is equal to or less than 30 mm.
Claim 16
Dependent Claim
40 words
An antenna for mobile communication according to claim 1, wherein the cable is a coaxial cable, and the first conductor constitutes the inner conductor of the coaxial cable and the second conductor constitutes the outer conductor of the coaxial cable.
Claim 17
Dependent Claim
16 words
An antenna for mobile communication according to claim 1, wherein the capacitor is a variable capacitor.
References Cited (Backward Citations)
US2996713A
Cited
FR2553586A1
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US4701763A
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US4771291A
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EP0366393A2
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WO1990005390A1
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EP0526643A1
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