Patent US6097974A successfully refreshed from Google Patents.
US6097974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined GPS and wide bandwidth radiotelephone terminals and methods
Assignee: Ericsson Inc
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Filing: 1997-12-12
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Granted: 2000-08-01
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Expires: 2017-12-12
Abstract
Abstract Wireless mobile terminals include a GPS Radio Frequency (RF) receiver and a wide bandwidth radiotelephone RF receiver having bandwidth that is at least half as wide as the GPS RF signal chip frequency. The wireless mobile terminals also include a shared Intermediate Frequency (IF) section that is responsive to both the GPS RF receiver and to the wide bandwidth radiotelephone RF receiver. A demodulator such as a CDMA despreader is responsive to the shared IF section. Thus, common circuitry may be provided except for the separate GPS RF receiver and wide bandwidth radiotelephone RF receiver. Low cost manufacturing and high efficiency operations may thereby be provided.
Inventors
- 👤 William O. Camp, Jr.
- 👤 Robert Ray Horton
- 👤 Paul Wilkinson Dent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:42
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; G; G01; G01S; G01S19/00; G01S19/01; G01S19/13; G01S19/35; H04B1/3805; G01S2205/00; G01S2205/001; G01S2205/008
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
100 words
A wireless mobile terminal for a wireless communications system, comprising: a Global Positioning System (GPS) Radio Frequency (RF) receiver that receives GPS signals at a predetermined chip frequency; a Code Division Multiple Access (CDMA) radiotelephone RF receiver having bandwidth that is at least half as wide as the predetermined chip frequency that receives CDMA signals; a shared Intermediate Frequency (IF) section that is responsive to both the GPS RF receiver and to the CDMA radiotelephone RF receiver; and a shared CDMA despreader that is responsive to the shared IF section to despread both the GPS signals and the CDMA signals.
Claim 2
Dependent Claim
100 words
A wireless mobile terminal for a wireless communications system, comprising: a Global Positioning System (GPS) Radio Frequency (RF) receiver that receives GPS signals at a predetermined chip frequency; a Code Division Multiple Access (CDMA) radiotelephone RF receiver having bandwidth that is at least half as wide as the predetermined chip frequency that receives CDMA signals; a shared Intermediate Frequency (IF) section that is responsive to both the GPS RF receiver and to the CDMA radiotelephone RF receiver; and a shared CDMA despreader that is responsive to the shared IF section to despread both the GPS signals and the CDMA signals.
Claim 3
Dependent Claim
26 words
A wireless mobile terminal according to claim 1 wherein the GPS RF receiver and the CDMA radiotelephone RF receiver have similar bandwidth in different RF spectra.
Claim 4
Dependent Claim
26 words
A wireless mobile terminal according to claim 1 wherein the GPS RF receiver and the CDMA radiotelephone RF receiver have identical bandwidth in different RF spectra.
Claim 5
Dependent Claim
29 words
A wireless mobile terminal according to claim 1 wherein the GPS RF receiver comprises a GPS antenna and wherein the CDMA radiotelephone RF receiver comprises a CDMA radiotelephone antenna.
Claim 6
Dependent Claim
53 words
A wireless mobile terminal according to claim 1 further comprising a dual band antenna, wherein the GPS RF receiver comprises a GPS RF filter that is responsive to the dual band antenna and wherein the CDMA radiotelephone RF receiver comprises a spread spectrum RF filter that is responsive to the dual band antenna.
Claim 7
Dependent Claim
28 words
A wireless mobile terminal according to claim 5 further comprising a wideband RF amplifier that is responsive to the GPS RF filter and the spread spectrum RF filter.
Claim 8
Independent Claim
84 words
A method of receiving wireless communications in a mobile terminal comprising the steps of: receiving Global Positioning System (GPS) Radio Frequency (RF) signals at a predetermined chip frequency on a first RF channel; receiving Code Division Multiple Access (CDMA) radiotelephone RF signals on a second RF channel, wherein the CDMA radiotelephone RF signals have bandwidth that is at least half as wide as the predetermined chip frequency; and despreading both the GPS RF signals and the CDMA radiotelephone RF signals in a shared despreader.
Claim 9
Independent Claim
84 words
A method of receiving wireless communications in a mobile terminal comprising the steps of: receiving Global Positioning System (GPS) Radio Frequency (RF) signals at a predetermined chip frequency on a first RF channel; receiving Code Division Multiple Access (CDMA) radiotelephone RF signals on a second RF channel, wherein the CDMA radiotelephone RF signals have bandwidth that is at least half as wide as the predetermined chip frequency; and despreading both the GPS RF signals and the CDMA radiotelephone RF signals in a shared despreader.
Claim 10
Dependent Claim
24 words
A method according to claim 7 wherein the GPS RF signals and the CDMA radiotelephone RF signals have similar bandwidth in different RF spectra.
Claim 11
Dependent Claim
24 words
A method according to claim 7 wherein the GPS RF signals and the CDMA radiotelephone RF signals have identical bandwidth in different RF spectra.
Claim 12
Dependent Claim
30 words
A method according to claim 9 wherein the demodulating step comprises the step of mixing both the GPS RF signals and the CDMA radiotelephone RF signals in a shared mixer.
Claim 13
Dependent Claim
115 words
A wireless mobile terminal for a wireless communications system, comprising: a Global Positioning System (GPS) Radio Frequency (RF) receiver that receives GPS signals at a predetermined chip frequency; a Code Division Multiple Access (CDMA) radiotelephone RF receiver having bandwidth that is at least half as wide as the predetermined chip frequency that receives CDMA signals; a GPS Intermediate Frequency (IF) section that is responsive to the GPS RF receiver; a CDMA radiotelephone IF section that is responsive to the CDMA radiotelephone RF receiver; and a shared spread spectrum despreader that is responsive to both the GPS IF section and to the CDMA radiotelephone IF section to despread both the GPS signals and the CDMA signals.
Claim 14
Dependent Claim
115 words
A wireless mobile terminal for a wireless communications system, comprising: a Global Positioning System (GPS) Radio Frequency (RF) receiver that receives GPS signals at a predetermined chip frequency; a Code Division Multiple Access (CDMA) radiotelephone RF receiver having bandwidth that is at least half as wide as the predetermined chip frequency that receives CDMA signals; a GPS Intermediate Frequency (IF) section that is responsive to the GPS RF receiver; a CDMA radiotelephone IF section that is responsive to the CDMA radiotelephone RF receiver; and a shared spread spectrum despreader that is responsive to both the GPS IF section and to the CDMA radiotelephone IF section to despread both the GPS signals and the CDMA signals.
Claim 15
Dependent Claim
26 words
A wireless mobile terminal according to claim 11 wherein the GPS RF receiver and the CDMA radiotelephone RF receiver have similar bandwidth in different RF spectra.
Claim 16
Dependent Claim
26 words
A wireless mobile terminal according to claim 11 wherein the GPS RF receiver and the CDMA radiotelephone RF receiver have identical bandwidth in different RF spectra.
Claim 17
Dependent Claim
29 words
A wireless mobile terminal according to claim 11 wherein the GPS RF receiver comprises a GPS antenna and wherein the CDMA radiotelephone RF receiver comprises a CDMA radiotelephone antenna.
Claim 18
Dependent Claim
24 words
A wireless mobile terminal according to claim 11 wherein the GPS IF section and the CDMA radiotelephone IF section comprise a shared local oscillator.
Claim 19
Independent Claim
101 words
A method of receiving wireless communications in a mobile terminal comprising the steps of: receiving Global Positioning System (GPS) Radio Frequency (RF) signals at a predetermined chip frequency on a first RF channel; receiving Code Division Multiple Access (CDMA) radiotelephone signals on a second RF channel, wherein the CDMA radiotelephone signals have bandwidth at least half as wide as the predetermined chip frequency; separately mixing the GPS RF signals and the CDMA radiotelephone signals in separate GPS and wide bandwidth radiotelephone mixers; and despreading both the mixed GPS RF signals and the mixed wide bandwidth radiotelephone signals in a shared despreader.
Claim 20
Independent Claim
101 words
A method of receiving wireless communications in a mobile terminal comprising the steps of: receiving Global Positioning System (GPS) Radio Frequency (RF) signals at a predetermined chip frequency on a first RF channel; receiving Code Division Multiple Access (CDMA) radiotelephone signals on a second RF channel, wherein the CDMA radiotelephone signals have bandwidth at least half as wide as the predetermined chip frequency; separately mixing the GPS RF signals and the CDMA radiotelephone signals in separate GPS and wide bandwidth radiotelephone mixers; and despreading both the mixed GPS RF signals and the mixed wide bandwidth radiotelephone signals in a shared despreader.
Claim 21
Dependent Claim
24 words
A method according to claim 16 wherein the GPS RF signals and the CDMA radiotelephone RF signals have similar bandwidth in different RF spectra.
Claim 22
Dependent Claim
24 words
A method according to claim 16 wherein the GPS RF signals and the CDMA radiotelephone RF signals have identical bandwidth in different RF spectra.
Claim 23
Dependent Claim
74 words
A wireless mobile terminal for a wireless communications system, comprising: a global positioning system (GPS) receiver that receives GPS signals at a predetermined chip frequency; and a Code Division Multiple Access (CDMA) radiotelephone receiver having bandwidth at least half as wide as the predetermined chip frequency, that receives CDMA signals; wherein the GPS receiver and the CDMA radiotelephone receiver share a spread spectrum despreader to despread both the GPS signals and the CDMA signals.
Claim 24
Dependent Claim
74 words
A wireless mobile terminal for a wireless communications system, comprising: a global positioning system (GPS) receiver that receives GPS signals at a predetermined chip frequency; and a Code Division Multiple Access (CDMA) radiotelephone receiver having bandwidth at least half as wide as the predetermined chip frequency, that receives CDMA signals; wherein the GPS receiver and the CDMA radiotelephone receiver share a spread spectrum despreader to despread both the GPS signals and the CDMA signals.
Claim 25
Dependent Claim
23 words
A wireless mobile terminal according to claim 19 wherein the wherein the GPS receiver and the CDMA radiotelephone receiver also share a mixer.
Claim 26
Dependent Claim
25 words
A wireless mobile terminal according to claim 19 wherein the GPS receiver and the CDMA radiotelephone receiver have identical bandwidth in different radio frequency spectra.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-01 | 2004-01-31 | 2004-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-01 | 2008-01-31 | 2008-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-01 | 2012-01-31 | 2012-08-01 | $7700.00 | Window Closed / Lapsed |