Patent US5867131A successfully refreshed from Google Patents.
US5867131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna for a mobile computer
Assignee: Lenovo PC International Ltd
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Filing: 1996-11-19
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Granted: 1999-02-02
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Expires: 2016-11-19
Abstract
Abstract Disclosed is an antenna mounted on a dielectric card with three pairs of dipoles. The dielectric card may be made of epoxy or epoxy glass or Teflon with glass fibers or any plastic with low dielectric loss and/or glass. Each dipole pair is designed to resonate at a different frequency band. Thus, for instance, a first pair provide signals in 800 MHZ range, a second dipole pair provide signals in the 1900 MHZ range and a third dipole pair provide signals in the 2400 MHZ range. With multiple dipoles the antenna can be used to provide wireless communications for several different frequency bands. The antenna card may hingeable or slideably mounted to a mobile computer. Thus, using a single antenna card a mobile computer can operate in several different frequency bands.
Inventors
- 👤 William O. Camp, Jr.
- 👤 Daniel Paul Homiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:50
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; G; G06; G06F; G06F1/00; G06F1/16; G06F1/1613; G06F1/1633; G06F1/1637; G06F1/1615; G06F1/1616; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/36; H01Q1/38; H01Q21/00; H01Q21/24; H01Q21/26; H01Q5/00; H01Q5/30; H01Q5/307; H01Q5/342; H01Q5/357; H01Q5/364; H01Q5/371; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28; H01Q9/285
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
142 words
An radio antenna comprising: a dielectric card; a first pair of antenna traces forming a first dipole on the dielectric card for resonating at a first RF band; a second pair of antenna traces forming a second dipole on the dielectric card for resonating at a second RF band; a third pair of antenna traces forming a third dipole on the dielectric card for resonating at a third RF band; a first metal trace on the top of the dielectric card electrically coupled to one trace from each of said antenna pairs at a first common point; a second metal trace on the bottom of the dielectric card electrically coupled to one trace from each of said antenna pairs at a second common point; where said first and second traces form a single transmission line for the first, second and third dipoles.
Claim 2
Dependent Claim
142 words
An radio antenna comprising: a dielectric card; a first pair of antenna traces forming a first dipole on the dielectric card for resonating at a first RF band; a second pair of antenna traces forming a second dipole on the dielectric card for resonating at a second RF band; a third pair of antenna traces forming a third dipole on the dielectric card for resonating at a third RF band; a first metal trace on the top of the dielectric card electrically coupled to one trace from each of said antenna pairs at a first common point; a second metal trace on the bottom of the dielectric card electrically coupled to one trace from each of said antenna pairs at a second common point; where said first and second traces form a single transmission line for the first, second and third dipoles.
Claim 3
Dependent Claim
16 words
The radio antenna of claim 1 further including a cover to protect the antenna from damage.
Claim 4
Dependent Claim
15 words
The radio antenna of claim 1 wherein the dielectric card is made of epoxy glass.
Claim 5
Dependent Claim
17 words
The radio antenna of claim 3 wherein the first RF band is 1850 MHZ to 1960 MHZ.
Claim 6
Dependent Claim
17 words
The radio antenna of claim 4 wherein the second RF band is 824 MHZ to 896 MHZ.
Claim 7
Dependent Claim
17 words
The radio antenna of claim 5 wherein the third RF band is 2400 MHZ to 2500 MHZ.
Claim 8
Dependent Claim
17 words
The radio antenna of claim 1 wherein the first RF band is 1850 MHZ to 1960 MHZ.
Claim 9
Dependent Claim
17 words
The radio antenna of claim 7 wherein the second RF band is 824 MHZ to 896 MHZ.
Claim 10
Dependent Claim
17 words
The radio antenna of claim 8 wherein the third RF band is 2400 MHZ to 2500 MHZ.
Claim 11
Dependent Claim
212 words
A mobile computer comprising: a system unit; an antenna having a dielectric card with a first pair of antenna traces forming a first dipole on the dielectric card for resonating at a first RF band, a second pair of antenna traces forming a second dipole on the dielectric card for resonating at a second RF band, a third pair of antenna traces forming a third dipole on the dielectric card for resonating at a third RF band, a first metal trace on the top of the dielectric card electrically coupled to one trace from each of said antenna pairs at a first common point, a second metal trace on the bottom of the dielectric card electrically coupled to one trace from each of said antenna pairs at a second common point, said first and second traces forming a single transmission line for the first, second and third dipoles; a display portion coupled to the system unit, said display portion forming a recess, said recess providing a receptacle for securing the antenna; and a sliding mechanism for securing said antenna within the recess in a stowed away position and for securing the antenna in a fully deployed position, said sliding mechanism permitting said antenna card to slide between said secured positions when released.
Claim 12
Dependent Claim
212 words
A mobile computer comprising: a system unit; an antenna having a dielectric card with a first pair of antenna traces forming a first dipole on the dielectric card for resonating at a first RF band, a second pair of antenna traces forming a second dipole on the dielectric card for resonating at a second RF band, a third pair of antenna traces forming a third dipole on the dielectric card for resonating at a third RF band, a first metal trace on the top of the dielectric card electrically coupled to one trace from each of said antenna pairs at a first common point, a second metal trace on the bottom of the dielectric card electrically coupled to one trace from each of said antenna pairs at a second common point, said first and second traces forming a single transmission line for the first, second and third dipoles; a display portion coupled to the system unit, said display portion forming a recess, said recess providing a receptacle for securing the antenna; and a sliding mechanism for securing said antenna within the recess in a stowed away position and for securing the antenna in a fully deployed position, said sliding mechanism permitting said antenna card to slide between said secured positions when released.
Claim 13
Dependent Claim
12 words
The mobile computer of claim 10 wherein the antenna having a cover.
Claim 14
Dependent Claim
31 words
The mobile computer of claim 10 further comprising a coaxial cable which is electrically coupled to the antenna and a coaxial connector located on an outside surface of the mobile computer.
Claim 15
Dependent Claim
17 words
The mobile computer of claim 12 wherein the outward surface is the bottom of the display portion.
Claim 16
Dependent Claim
15 words
The mobile computer of claim 10 wherein the dielectric card is made of epoxy glass.
Claim 17
Dependent Claim
17 words
The mobile computer of claim 10 wherein the first RF band is 1850 MHZ to 1960 MHZ.
Claim 18
Dependent Claim
17 words
The mobile computer of claim 15 wherein the second RF band is 824 MHZ to 896 MHZ.
Claim 19
Dependent Claim
17 words
The mobile computer of claim 16 wherein the third RF band is 2400 MHZ to 2500 MHZ.
Claim 20
Dependent Claim
213 words
A mobile computer comprising: a system unit; an antenna having a dielectric card with a first pair of antenna traces forming a first dipole on the dielectric card for resonating at a first RF band, a second pair of antenna traces forming a second dipole on the dielectric card for resonating at a second RF band, a third pair of antenna traces forming a third dipole on the dielectric card for resonating at a third RF band, a first metal trace on the top of the dielectric card electrically coupled to one trace from each of said antenna pairs at a first common point, a second metal trace on the bottom of the dielectric card electrically coupled to one trace from each of said antenna pairs at a second common point, said first and second traces forming a single transmission line for the first, second and third dipoles; a display portion coupled to the system unit, said display portion forming a recess, said recess providing a receptacle for securing the antenna; and a hinging mechanism for securing said antenna within the recess in a stowed away position and for securing the antenna in a fully deployed position, said hinging mechanism permitting said antenna card to travel between said fully deployed and stored positions.
Claim 21
Dependent Claim
213 words
A mobile computer comprising: a system unit; an antenna having a dielectric card with a first pair of antenna traces forming a first dipole on the dielectric card for resonating at a first RF band, a second pair of antenna traces forming a second dipole on the dielectric card for resonating at a second RF band, a third pair of antenna traces forming a third dipole on the dielectric card for resonating at a third RF band, a first metal trace on the top of the dielectric card electrically coupled to one trace from each of said antenna pairs at a first common point, a second metal trace on the bottom of the dielectric card electrically coupled to one trace from each of said antenna pairs at a second common point, said first and second traces forming a single transmission line for the first, second and third dipoles; a display portion coupled to the system unit, said display portion forming a recess, said recess providing a receptacle for securing the antenna; and a hinging mechanism for securing said antenna within the recess in a stowed away position and for securing the antenna in a fully deployed position, said hinging mechanism permitting said antenna card to travel between said fully deployed and stored positions.
Claim 22
Dependent Claim
14 words
The mobile computer of claim 18 wherein the antenna is contain within a cover.
Claim 23
Dependent Claim
31 words
The mobile computer of claim 18 further comprising a coaxial cable which is electrically coupled to the antenna and a coaxial connector located on an outside surface of the mobile computer.
Claim 24
Dependent Claim
17 words
The mobile computer of claim 20 wherein the outward surface is the bottom of the display portion.
Claim 25
Dependent Claim
15 words
The mobile computer of claim 18 wherein the dielectric card is made of epoxy glass.
Claim 26
Dependent Claim
17 words
The mobile computer of claim 18 wherein the first RF band is 1850 MHZ to 1960 MHZ.
Claim 27
Dependent Claim
17 words
The mobile computer of claim 23 wherein the second RF band is 824 MHZ to 896 MHZ.
Claim 28
Dependent Claim
17 words
The mobile computer of claim 24 wherein the third RF band is 2400 MHZ to 2500 MHZ.
References Cited (Backward Citations)
US4121218A
Cited
US4313119A
Cited
US4356492A
Cited
US4584709A
Cited
US4922263A
Cited
US5075691A
Cited
US5138328A
Cited
US5229777A
Cited
US5373300A
Cited
US5361061A
Cited
US5387919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-02-01 | 2002-08-03 | 2003-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-02-01 | 2006-08-03 | 2007-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-02-01 | 2010-08-03 | 2011-02-02 | $7700.00 | Window Closed / Lapsed |