US5796772A
Expired / Lapsed
US
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Multi-band, multi-mode spread-spectrum communication system
Assignee: Intel Corp
•
Filing: 1995-06-07
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Granted: 1998-08-18
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Expires: 2015-06-07
Abstract
Abstract A technique for spread-spectrum communication which uses more than one mode and more than one frequency band. Selectable modes include narrowband mode and spread-spectrum mode, or cellular mode and microcellular mode. Selectable frequency bands include both licensed and unlicensed frequency bands, particularly frequency bands including the 902-928 MHz, 1850-1990 MHz, and 2.4-2.4835 GHz frequency bands. Spread-spectrum communication channels are 10 MHz or less in width. The frequency band onto which spread-spectrum signals are encoded may be changed upon a change in environment or other control trigger, such as establishment or de-establishment of communication with a private access network. A multi-band transmitter comprises a single frequency synthesizer and a frequency source (e.g., a local oscillator), coupled to a selectable band pass filter. A multi-band receiver capable of monitoring one or more frequency bands comprises bank of bandpass filters and a demodulator comprising a single frequency synthesizer and a frequency source.
Inventors
- 👤 Douglas G. Smith
- 👤 Robert C. Dixon
- 👤 Jeffrey S. Vanderpool
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:31
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/30; H04W52/36; H04W52/367; G; G10; G10L; G10L19/00; G10L19/012; H04B; H04B1/00; H04B1/005; H04B1/0053; H04B1/0057; H04B1/006; H04B1/38; H04B1/40; H04B1/403; H04B1/406; H04B1/69; H04B1/692; H04B1/707; H04B7/00; H04B7/24; H04B7/26; H04B7/2618; H04B7/2628; H04B7/2634; H04J; H04J13/00; H04L; H04L27/00; H04L27/10; H04L27/12; H04W52/06; H04W52/08; H04W52/362; H04W52/38; H04W52/40; H04B2201/00; H04B2201/69; H04B2201/707; H04B2201/70707; H04B2201/7071; H04L1/00; H04L1/0001; H04L1/0002; H04W36/00; H04W36/0005; H04W36/0055; H04W36/0069; H04W36/00692; H04W88/00; H04W88/02; H04W88/06
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
89 words
An apparatus for multi-band multi-mode communication comprising: a transmitter having a plurality of transmission modes and a plurality of modulators; a receiver having a plurality of demodulators; a first and second mode selection signal coupled respectively to said transmitter and said receiver; a first and second filter coupled respectively to said plurality of modulators and to said plurality of demodulators; and said plurality of modulators comprising a spread spectrum modulator and a narrowband modulator, wherein said transmitter is capable of transmitting a spread spectrum signal and a narrowband signal.
Claim 2
Independent Claim
89 words
An apparatus for multi-band multi-mode communication comprising: a transmitter having a plurality of transmission modes and a plurality of modulators; a receiver having a plurality of demodulators; a first and second mode selection signal coupled respectively to said transmitter and said receiver; a first and second filter coupled respectively to said plurality of modulators and to said plurality of demodulators; and said plurality of modulators comprising a spread spectrum modulator and a narrowband modulator, wherein said transmitter is capable of transmitting a spread spectrum signal and a narrowband signal.
Claim 3
Dependent Claim
28 words
The apparatus of claim 1 further comprising a plurality of reception modes comprising a communications protocol selected from the group consisting of: AMPS, GSM, IS-45, IS-95 and DECT.
Claim 4
Dependent Claim
27 words
The apparatus of claim 1 further comprising a plurality of input and output frequency hands comprising a frequency band which spans from 2400 megahertz to 2483.5 megahertz.
Claim 5
Dependent Claim
27 words
The apparatus of claim 1 further comprising a plurality of input and output frequency bands comprising a frequency band which spans from 1850 megahertz to 1990 megahertz.
Claim 6
Dependent Claim
16 words
The apparatus of claim 1 wherein said receiver and transmitter are co-located in a mobile handset.
Claim 7
Dependent Claim
17 words
The apparatus of claim 1 wherein said plurality of transmission and reception modes comprise a cellular mode.
Claim 8
Dependent Claim
17 words
The apparatus of claim 1 wherein said plurality of transmission and reception modes comprise a microcellular mode.
Claim 9
Dependent Claim
27 words
The apparatus of claim 1 wherein said plurality of transmission modes comprises a communications protocol selected from the group consisting of: AMPS, GSM, IS-45, IS-95 and DECT.
Claim 10
Dependent Claim
10 words
The apparatus of claim 1 further comprising a paging unit.
Claim 11
Independent Claim
151 words
An apparatus for muiti-band multi-mode communication comprising: a transmitter comprising a first tunable frequency source; a plurality of modulators coupled to said first tunable frequency source, said plurality of modulators comprising a plurality of transmission modes; a first mode selection signal coupled to each of said plurality of modulators; a first filter coupled to an output of each of said plurality of modulators; said plurality of modulators comprising a spread spectrum modulator and a narrowband modulator and said transmitter is capable of transmitting a spread spectrum signal and a narrowband signal; and a receiver comprising a second filter; a second tunable frequency source; a frequency converter coupled to said second filter and coupled to said second tunable frequency source; a plurality of demodulators coupled to said frequency converter, said plurality of demodulators comprising a plurality of reception modes a second mode selection signal coupled to each of said plurality of demodulators.
Claim 12
Independent Claim
151 words
An apparatus for muiti-band multi-mode communication comprising: a transmitter comprising a first tunable frequency source; a plurality of modulators coupled to said first tunable frequency source, said plurality of modulators comprising a plurality of transmission modes; a first mode selection signal coupled to each of said plurality of modulators; a first filter coupled to an output of each of said plurality of modulators; said plurality of modulators comprising a spread spectrum modulator and a narrowband modulator and said transmitter is capable of transmitting a spread spectrum signal and a narrowband signal; and a receiver comprising a second filter; a second tunable frequency source; a frequency converter coupled to said second filter and coupled to said second tunable frequency source; a plurality of demodulators coupled to said frequency converter, said plurality of demodulators comprising a plurality of reception modes a second mode selection signal coupled to each of said plurality of demodulators.
Claim 13
Dependent Claim
19 words
The apparatus of claim 10 wherein said plurality of demodulators comprise a spread spectrum demodulator and a narrowband demodulator.
Claim 14
Dependent Claim
12 words
The apparatus of claim 10 wherein the apparatus is a mobile handset.
Claim 15
Dependent Claim
20 words
The apparatus of claim 10 further comprising a mode select switch which selects one of said plurality of transmission modes.
Claim 16
Dependent Claim
20 words
The apparatus of claim 10 further comprising a mode select switch which selects one of said plurality of reception modes.
Claim 17
Dependent Claim
33 words
The apparatus of claim 10 wherein said transmitter further comprises a power amplifier coupled to said plurality of modulators, said power amplifier adjustable to operate in each of said plurality of transmission modes.
Claim 18
Dependent Claim
22 words
The apparatus of claim 10 wherein at least one of said first and second tunable frequency sources comprises a programmable frequency synthesizer.
Claim 19
Dependent Claim
59 words
The apparatus of claim 16 wherein said programmable frequency synthesizer comprises: a reference frequency signal source; a programmable divide-by-N counter; a multiplier having inputs coupled to said programmable divide-by-N counter and said reference frequency signal course; and a voltage-controlled oscillator having an input coupled to said multiplier, said voltage-controlled oscillator having an output coupled to said programmable divide-by-N counter.
Claim 20
Dependent Claim
24 words
The apparatus of claim 10 wherein said first and second tunable frequency sources are the same component shared between said transmitter and said receiver.
Claim 21
Dependent Claim
22 words
The apparatus of claim 10 wherein said first and second filters are the same component shared between said transmitter and said receiver.
Claim 22
Dependent Claim
23 words
The apparatus of claim 10 wherein said first filter is capable of passing a signal in each of said plurality of transmission modes.
Claim 23
Dependent Claim
23 words
The apparatus of claim 10 wherein said second filter is capable of passing a signal in each of said plurality of reception modes.
Claim 24
Dependent Claim
21 words
The apparatus of claim 10 wherein said first and second filters comprise center filtering frequencies in a plurality of frequency bands.
Claim 25
Dependent Claim
20 words
The apparatus of claim 10 wherein at least one of said first and second filters comprises an adjustable bandpass filter.
Claim 26
Dependent Claim
28 words
The apparatus of claim 10 wherein said first filter comprises a plurality of narrowband power amplifiers in parallel, said plurality of narrowband power amplifiers coupled to a multiplexer.
Claim 27
Dependent Claim
23 words
The apparatus of claim 10 wherein at least one of said first and second filters comprises a plurality of bandpass filters in parallel.
References Cited (Backward Citations)
US2154921A
Cited
US2844650A
Cited
US4247942A
Cited
US3358227A
Cited
US3628155A
Cited
US3988679A
Cited
US4132952A
Cited
US3991419A
Cited
US4163944A
Cited
US4164628A
Cited
US4100498A
Cited
US4356567A
Cited
US4285060A
Cited
US4189677A
Cited
US4222115A
Cited
US4301530A
Cited
US4327438A
Cited
US4280222A
Cited
US4355411A
Cited
US4320514A
Cited
US4392231A
Cited
US4324001A
Cited
US4455651A
Cited
US4355399A
Cited
US4435821A
Cited
US4418425A
Cited
US4425661A
Cited
US4525835A
Cited
US4432089A
Cited
US4425642A
Cited
US4423519A
Cited
US4408350A
Cited
US4479226A
Cited
US4554668A
Cited
US4456793A
Cited
US4479227A
Cited
US4797677A
Cited
US4484028A
Cited
US4587662A
Cited
AU3984485A
Cited
EP0189695B1
Cited
US5005183A
Cited
US4866732A
Cited
US4688210A
Cited
US4630283A
Cited
US4742512A
Cited
US4864589A
Cited
US4754453A
Cited
US4868795A
Cited
US4672658A
Cited
US4701904A
Cited
US4724435A
Cited
US4718080A
Cited
US4736371A
Cited
US5063560A
Cited
US4703474A
Cited
US4765753A
Cited
US4815106A
Cited
US4837786A
Cited
US4807222A
Cited
US4748642A
Cited
US4837802A
Cited
US4754473A
Cited
US4901307A
Cited
US4804938A
Cited
US4955083A
Cited
US4797947A
Cited
US4893327A
Cited
US5115514A
Cited
US4905221A
Cited
US4878238A
Cited
US4811357A
Cited
US4928274A
Cited
US4979170A
Cited
EP0326104B1
Cited
US5111535A
Cited
US5073899A
Cited
US5016260A
Cited
US4995083A
Cited
US5127042A
Cited
US4989230A
Cited
US4984247A
Cited
US5023939A
Cited
US5416779A
Cited
US4943973A
Cited
US5022046A
Cited
US5042050A
Cited
US5008953A
Cited
US5042082A
Cited
US5022047A
Cited
US5016255A
Cited
US4972431A
Cited
US5101501A
Cited
US5056109A
Cited
US5109390A
Cited
US5008925A
Cited
US5222075A
Cited
US5058138A
Cited
US5029184A
Cited
US5073900A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-17 | 2002-02-16 | 2002-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-17 | 2006-02-16 | 2006-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-17 | 2010-02-16 | 2010-08-18 | $7700.00 | Window Closed / Lapsed |