US4955084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paging receiver with metallic display frame structure increasing antenna gain
Assignee: NEC Corp
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Filing: 1989-03-02
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Granted: 1990-09-04
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Expires: 2009-03-02
Abstract
Abstract A paging receiver having a display prevents the gain of an antenna from being lowered despite that a metal frame which fixes a display in place is located in close proximity to and in parallel with the antenna. A part of the metal frame which is close to the antenna is removed.
Inventors
- 👤 Shinjiro Umetsu
- 👤 Toshihiro Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:34
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/52; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/243
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
94 words
A receiver comprising: a loop antenna; a plurality of elements for processing a signal received by said antenna; and a metallic member for structurally supporting at least one of said elements, said metallic member having a generally-rectilinear portion located generally in parallel with a longitudinal axis of said loop antenna; said metallic member further having a portion adjacent to said loop antenna, said adjacent portion including a gap of sufficient size to substantially prevent loss of gain of said antenna resulting from mirror current in said metallic member induced by current in said antenna.
Claim 2
Dependent Claim
94 words
A receiver comprising: a loop antenna; a plurality of elements for processing a signal received by said antenna; and a metallic member for structurally supporting at least one of said elements, said metallic member having a generally-rectilinear portion located generally in parallel with a longitudinal axis of said loop antenna; said metallic member further having a portion adjacent to said loop antenna, said adjacent portion including a gap of sufficient size to substantially prevent loss of gain of said antenna resulting from mirror current in said metallic member induced by current in said antenna.
Claim 3
Dependent Claim
14 words
A receiver as defined in claim 1, wherein said receiver comprises a paging receiver.
Claim 4
Dependent Claim
89 words
A receiver comprising: a loop antenna; a display device for displaying information received by said antenna; and a metallic member for structurally supporting said display device, said metallic member having a generally-rectilinear portion located generally in parallel with a longitudinal axis of said loop antenna; said metallic member further having a portion adjacent to said loop antenna, said adjacent portion including a gap of sufficient size to substantially prevent loss of gain of said antenna resulting from mirror current in said metallic member induced by current in said antenna.
Claim 5
Dependent Claim
89 words
A receiver comprising: a loop antenna; a display device for displaying information received by said antenna; and a metallic member for structurally supporting said display device, said metallic member having a generally-rectilinear portion located generally in parallel with a longitudinal axis of said loop antenna; said metallic member further having a portion adjacent to said loop antenna, said adjacent portion including a gap of sufficient size to substantially prevent loss of gain of said antenna resulting from mirror current in said metallic member induced by current in said antenna.
Claim 6
Dependent Claim
14 words
A receiver as defined in claim 3, wherein said receiver comprises a paging receiver.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-03 | 1994-03-05 | 1994-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-03 | 1998-03-05 | 1998-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-03 | 2002-03-05 | 2002-09-04 | $7700.00 | Window Closed / Lapsed |