US5831577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
GPS/radio antenna combination
Assignee: Trimble Inc
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Filing: 1997-07-28
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Granted: 1998-11-03
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Expires: 2017-07-28
Abstract
Abstract A GPS/radio antenna for receiving a GPS satellite signal and a DGPS radio signal. The GPS/radio antenna includes a GPS antenna using a microstrip antenna element for receiving the GPS signal having GPS location determination information, a radio antenna for receiving a DGPS radio signal in the FM broadcast frequency range having DGPS corrections, an enclosure, and a cable. The GPS/radio antenna may be included in a GPS/DGPS receiver system also including a receiver unit with an FM DGPS receiver for demodulating the DGPS radio signal and providing DGPS corrections, and a differential-ready GPS receiver for providing a differentially-corrected GPS location.
Inventors
- 👤 Mark E. Nichols
- 👤 Eric B. Rodal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:15
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q1/38; H01Q21/00; H01Q21/28; H01Q21/30; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/30; H01Q9/32; G; G01; G01S; G01S19/00; G01S19/01; G01S19/13; G01S19/35; G01S19/36; G01S19/38; G01S19/39; G01S19/40; G01S19/41
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
167 words
An antenna combination, comprising: a microstrip antenna having a downward facing planar ground layer and an opposed upward facing planar radiating layer having a vertical center axis, the microstrip antenna for one of (i) receiving a first airwave signal and issuing a first conducted signal representative of said first airwave signal or (ii) transmitting said first airwave signal and receiving said first conducted signal; and a wire loop antenna having a loop center axis approximately concentric with said vertical center axis, a circumference of less than one quarter a circumference of said radiating layer, disposed above said radiating layer, and having a first end and a second end connecting the wire loop antenna for one of (i) receiving a second airwave signal and issuing a second conducted signal between said first and said second end representative of said second airwave signal or (ii) receiving said second conducted signal between said first and said second end and transmitting said second airwave signal representative of said second conducted signal.
Claim 2
Dependent Claim
167 words
An antenna combination, comprising: a microstrip antenna having a downward facing planar ground layer and an opposed upward facing planar radiating layer having a vertical center axis, the microstrip antenna for one of (i) receiving a first airwave signal and issuing a first conducted signal representative of said first airwave signal or (ii) transmitting said first airwave signal and receiving said first conducted signal; and a wire loop antenna having a loop center axis approximately concentric with said vertical center axis, a circumference of less than one quarter a circumference of said radiating layer, disposed above said radiating layer, and having a first end and a second end connecting the wire loop antenna for one of (i) receiving a second airwave signal and issuing a second conducted signal between said first and said second end representative of said second airwave signal or (ii) receiving said second conducted signal between said first and said second end and transmitting said second airwave signal representative of said second conducted signal.
Claim 3
Dependent Claim
23 words
The antenna combination of claim 1, wherein: said first airwave signal is a global position system (GPS) signal including GPS location determination information.
Claim 4
Dependent Claim
32 words
The antenna combination of claim 1, wherein: said second airwave signal is a differential global positioning system (DGPS) signal having information for correcting a geographical location determined from the global positioning system.
Claim 5
Dependent Claim
25 words
The antenna combination of claim 1, wherein: said second airwave signal is a radio signal including information for a geographical position of the antenna combination.
Claim 6
Dependent Claim
32 words
The antenna combination of claim 1, wherein: the wire loop antenna is tuned for receiving said second airwave signal in a frequency band within a frequency range of 80 to 1900 MHz.
Claim 7
Dependent Claim
65 words
The antenna combination of claim 1, further including: a diplexer coupled to the microstrip antenna and the wire loop antenna for one of (i) receiving said first conducted signal and said second conducted signal and issuing a combined signal representative of said first and said second conducted signals or (ii) receiving said combined signal and issuing said first conducted signal and said second conducted signal.
Claim 8
Dependent Claim
125 words
An antenna combination, comprising: a microstrip antenna including a downward facing planar ground layer and an opposed upward facing planar top side having a vertical center axis, the microstrip antenna for one of (i) receiving a first airwave signal and issuing a first conducted signal representative of said first airwave signal or (ii) transmitting said first airwave signal and receiving said first conducted signal; and a wire loop antenna having a loop center axis approximately concentric with said vertical center axis and disposed below said ground layer, the wire loop antenna for one of (i) receiving a second airwave signal and issuing a second conducted signal representative of said second airwave signal or (ii) transmitting said second airwave signal and receiving said second conducted signal.
Claim 9
Dependent Claim
125 words
An antenna combination, comprising: a microstrip antenna including a downward facing planar ground layer and an opposed upward facing planar top side having a vertical center axis, the microstrip antenna for one of (i) receiving a first airwave signal and issuing a first conducted signal representative of said first airwave signal or (ii) transmitting said first airwave signal and receiving said first conducted signal; and a wire loop antenna having a loop center axis approximately concentric with said vertical center axis and disposed below said ground layer, the wire loop antenna for one of (i) receiving a second airwave signal and issuing a second conducted signal representative of said second airwave signal or (ii) transmitting said second airwave signal and receiving said second conducted signal.
Claim 10
Dependent Claim
25 words
The antenna combination of claim 7, wherein: said first airwave signal is a global positioning system (GPS) signal having information for determining a geographical location.
Claim 11
Dependent Claim
32 words
The antenna combination of claim 7, wherein: said second airwave signal is a differential global positioning system (DGPS) signal having information for correcting a geographical location determined from the global positioning system.
Claim 12
Dependent Claim
25 words
The antenna combination of claim 7, wherein: said second airwave signal is a radio signal including information for a geographical position of the antenna combination.
Claim 13
Dependent Claim
31 words
The antenna combination of claim 7, wherein: the radio antenna is tuned for receiving said second airwave signal having a frequency band within a frequency range of 80 to 1900 MHz.
Claim 14
Dependent Claim
65 words
The antenna combination of claim 7, further including: a diplexer coupled to the microstrip antenna and the wire loop antenna for one of (i) receiving said first conducted signal and said second conducted signal and issuing a combined signal representative of said first and said second conducted signals or (ii) receiving said combined signal and issuing said first conducted signal and said second conducted signal.
References Cited (Backward Citations)
US3984834A
Cited
US5099249A
Cited
US5272485A
Cited
US5300936A
Cited
US5523761A
Cited
US5486836A
Cited
US5654717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-02 | 2002-05-04 | 2002-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-02 | 2006-05-04 | 2006-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-02 | 2010-05-04 | 2010-11-03 | $7700.00 | Window Closed / Lapsed |