US5526003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna for mobile communication
Assignee: Panasonic Holdings Corp
•
Filing: 1994-07-29
•
Granted: 1996-06-11
•
Expires: 2014-07-29
Abstract
Abstract An antenna for mobile communication of this invention comprises a first metal plate having a slit, a second metal plate opposed to the first metal plate and electrically connected to the first metal plate, two metal foils connected to the second 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.
Inventors
- 👤 Koichi Ogawa
- 👤 Tomoki Uwano
- 👤 Masao Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:08
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: 4
Claim 1
Independent Claim
230 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; a capacitor having two terminals, one of the terminals being electrically connected to the first metal plate substantially at one point; 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 other of the terminals and a second conductor connected to the second metal plate, a first metal foil connected to a first end of the second metal plate, a second metal foil connected to a second end opposite the first end of the second metal plate, wherein the first metal foil and the second metal foil are flexible so as to follow curvature of a human body, 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, wherein a length of each of the first metal plate and the second metal plate is equal to or less than 65 mm and a width of each of the first metal plate and the second metal plate is equal to or less than 65 mm.
Claim 2
Dependent Claim
230 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; a capacitor having two terminals, one of the terminals being electrically connected to the first metal plate substantially at one point; 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 other of the terminals and a second conductor connected to the second metal plate, a first metal foil connected to a first end of the second metal plate, a second metal foil connected to a second end opposite the first end of the second metal plate, wherein the first metal foil and the second metal foil are flexible so as to follow curvature of a human body, 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, wherein a length of each of the first metal plate and the second metal plate is equal to or less than 65 mm and a width of each of the first metal plate and the second metal plate is equal to or less than 65 mm.
Claim 3
Dependent Claim
34 words
An antenna for mobile communication according to claim 1, 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 4
Dependent Claim
28 words
An antenna for mobile communication according to claim 2, wherein a shape of at lease one of the first to fourth metal foils is a meander line configuration.
References Cited (Backward Citations)
US2996713A
Cited
US4386357A
Cited
US5343214A
Cited
FR2553586A1
Cited
US4701763A
Cited
US4771291A
Cited
EP0366393A2
Cited
WO1990005390A1
Cited
US4992800A
Cited
US5061939A
Cited
JPH04129302A
Cited
US5278572A
Cited
EP0526643A1
Cited
US5313216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-06-11 | 1999-12-11 | 2000-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-11 | 2003-12-11 | 2004-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-11 | 2007-12-11 | 2008-06-11 | $7700.00 | Window Closed / Lapsed |