Patent EP0470797A2 successfully refreshed from Google Patents.
EP0470797A2
Expired / Lapsed
EP
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Antenna apparatus
Assignee: Panasonic Holdings Corp
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Filing: 1991-08-05
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Granted: —
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Expires: 2011-08-05
Abstract
Abstract In an antenna apparatus, a plurality of divisions of antenna elements (21-24) are formed on a radio apparatus cabinet (41) or on a substrate packaged on the surface of the radio apparatus cabinet (1), the divisions are interconnected together by coils (25-27), and a capacitor (28) is connected in parallel with at least one of the coils. The antenna apparatus is compact and tunable to a plurality of frequencies and has a high antenna gain.
Inventors
- 👤 Hiroshi Haruki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 09:38
CPC Classifications
H; H01; H01Q; H01Q5/00; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/243; H01Q1/36; H01Q1/38; H01Q5/30; H01Q5/307; H01Q5/314; H01Q5/321
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
87 words
An antenna apparatus comprising: a plurality of divisions of antenna elements (21-24) formed on a radio apparatus cabinet (41) or on a substrate packaged on the surface of the radio apparatus cabinet (1); a plurality of inductance elements (25-27) for interconnecting together said divisions of antenna elements, said inductance elements being inductive lumped constant elements or distributed constant elements; and a capacitance element (28) connected in parallel with at least one of said inductance elements to form a resonance circuit which resonates with a frequency band used.
Claim 2
Dependent Claim
20 words
Antenna apparatus according to Claim 1 wherein said antenna elements are put together by bending an antenna element or elements.
Claim 3
Dependent Claim
72 words
An antenna apparatus comprising: a plurality of divisions (31-34) profuced by dividing a linear antenna (42); a plurality of lumped constant elements or distributed constant elements (35-37) having inductive inductance and adapted to interconnect together said divisions; and a capacitance element (38) connected in parallel with at least one of said interconnected inductive inductance elements, said inductance and capacitance elements in parallel connection being operable to resonate with a frequency band used.
Claim 4
Dependent Claim
30 words
An antenna apparatus according to Claim 1 wherein values of said inductance and capacitance elements are set such that the antenna resonates with the highest one of different frequencies used.
Claim 5
Dependent Claim
48 words
An antenna comprising: divisions of antenna elements (53-54) formed by print pattern technique on a printed wiring board (52) in the form of a film; and surface packaged type coils (57) for interconnecting together said divisions of antenna elements, said coils being effective to reduce the antenna length.
References Cited (Backward Citations)
No citation records indexed.
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