Patent US6127988A successfully refreshed from Google Patents.
US6127988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixed wireless base station antenna arrangement
Assignee: Nortel Networks Corp
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Filing: 1998-05-05
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Granted: 2000-10-03
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Expires: 2018-05-05
Abstract
Abstract An antenna arrangement for a fixed wireless access base station comprising at least one pair of directional antenna wherein the pair of antennas have a common phase centre. If both antenna in the pair then operate on the same frequency channels, the correlation of fading of same sector co-channel interference can be maximised. To provide full cell coverage a plurality of pairs of antenna are arranged spaced apart in a tier about a support and to provide spatial diversity a second tier of antenna substantially the same as the first and which is vertically separated from the first tier is added.
Inventors
- 👤 John Duncan McNichol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:57
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/1242; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/246
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
37 words
An antenna arrangement for a fixed wireless access base station comprising at least one pair of directional antenna wherein the pair of antennas have a common phase centre, the two antenna in each pair being oppositely directed.
Claim 2
Dependent Claim
37 words
An antenna arrangement for a fixed wireless access base station comprising at least one pair of directional antenna wherein the pair of antennas have a common phase centre, the two antenna in each pair being oppositely directed.
Claim 3
Dependent Claim
21 words
An antenna arrangement according to claim 1 wherein both antenna in the pair operate on at least one common frequency channel.
Claim 4
Dependent Claim
21 words
An antenna arrangement according to claim 2 wherein both antenna in the pair operate on a majority of common frequency channels.
Claim 5
Dependent Claim
31 words
An antenna arrangement according to claim 1 wherein a plurality of pairs of antenna are arranged spaced apart in a tier about a support so as to provide cell sector coverage.
Claim 6
Dependent Claim
21 words
An antenna arrangement according to claim 4 wherein both antenna in each pair operate on at least one common frequency channel.
Claim 7
Dependent Claim
32 words
An antenna arrangement according to claim 5 wherein each of the antenna pairs operate on at least one frequency channel which is different from those on which the other antenna pairs operate.
Claim 8
Dependent Claim
30 words
An antenna arrangement according to claim 6 which additionally comprises a second tier of antenna substantially the same as the first and which is vertically separated from the first tier.
Claim 9
Dependent Claim
33 words
An antenna arrangement according to claim 7 wherein the antenna pairs in the second tier are located to the opposite side of the support to the equivalent antenna pair of the first tier.
Claim 10
Dependent Claim
32 words
An antenna arrangement according to claim 7 wherein each antenna in the second tier is directed with its bore sight in the same direction as the equivalent antenna in the first tier.
Claim 11
Dependent Claim
21 words
An antenna arrangement according to claim 7 wherein three antenna pairs are arranged in each tier and are spaced 120° apart.
Claim 12
Dependent Claim
14 words
An antenna arrangement according to claim 7 wherein different antennas operate with different polarisations.
Claim 13
Dependent Claim
25 words
An antenna arrangement according to claim 7 wherein the frequency channels are time divided and the time slots for each tier of antenna are synchronised.
Claim 14
Dependent Claim
21 words
An antenna arrangement according to claim 4 wherein both antenna in each pair operate on a majority of common frequency channels.
Claim 15
Dependent Claim
17 words
An antenna arrangement according to claim 4 wherein the antenna each have a substantially horizontal bore sight.
Claim 16
Dependent Claim
31 words
An antenna a arrangement according to claim 4 which additionally comprises a second tier of antenna substantially the same as the first and which is vertically separated from the first tier.
Claim 17
Dependent Claim
33 words
An antenna arrangement according to claim 15 wherein the antenna pairs in the second tier are located to the opposite side of the support to the equivalent antenna pair of the first tier.
Claim 18
Dependent Claim
32 words
An antenna arrangement according to claim 15 wherein each antenna in the second tier is directed with its bore sight in the same direction as the equivalent antenna in the first tier.
Claim 19
Dependent Claim
21 words
An antenna arrangement according to claim 15 wherein three antenna pairs are arranged in each tier and are spaced 120° apart.
Claim 20
Dependent Claim
14 words
An antenna arrangement according to claim 15 wherein different antennas operate with different polarisations.
Claim 21
Dependent Claim
25 words
An antenna arrangement according to claim 15 wherein the frequency channels are time divided and the time slots for each tier of antenna are synchronised.
References Cited (Backward Citations)
US4446465A
Cited
EP0106494A2
Cited
EP0435283A1
Cited
US5365571A
Cited
WO1994029972A1
Cited
GB2281176A
Cited
GB2292865A
Cited
WO1996013952A2
Cited
EP0802579A2
Cited
GB2320618A
Cited
US5872548A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-10-03 | 2004-04-03 | 2004-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-10-03 | 2008-04-03 | 2008-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-10-03 | 2012-04-03 | 2012-10-03 | $7700.00 | Window Closed / Lapsed |