Filters for combined radiotelephone/GPS terminals
First Claim
1. A satellite radiotelephone system comprising:
- a space-based component that is configured to provide wireless radiotelephone communications using satellite radiotelephone frequencies;
a plurality of ancillary terrestrial components including a plurality of ancillary terrestrial component antennas that are configured to provide wireless radiotelephone communications using at least one of the satellite radiotelephone frequencies in a radiation pattern that increases radiation below the horizon compared to above the horizon; and
a plurality of radiotelephones that are configured to communicate with the space-based component and with the plurality of ancillary terrestrial components, the radiotelephones also including a GPS signal receiver and a GPS mode filter that is configured to suppress energy at and/or below (1575.42−
Δ
) MHz, where 0<
Δ
≦
16.42 MHz.
18 Assignments
0 Petitions
Accused Products
Abstract
A satellite radiotelephone system includes a space-based component, a plurality of ancillary terrestrial components, and a plurality of radiotelephones. The space-based component is configured to provide wireless radiotelephone communications using satellite radiotelephone frequencies. The plurality of ancillary terrestrial components include a plurality of ancillary terrestrial component antennas configured to provide wireless radiotelephone communications using at least one of the satellite radiotelephone frequencies in a radiation pattern that increases radiation below the horizon compared to above the horizon. The plurality of radiotelephones are configured to communicate with the space-based component and with the plurality of ancillary terrestrial components. Each radiotelephone also includes a GPS signal processor and a GPS mode filter that is configured to suppress energy at (1575.42−Δ) MHz, where 0<Δ≦16.42 MHz. Related radiotelephones and methods are also discussed.
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Citations
39 Claims
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1. A satellite radiotelephone system comprising:
-
a space-based component that is configured to provide wireless radiotelephone communications using satellite radiotelephone frequencies;
a plurality of ancillary terrestrial components including a plurality of ancillary terrestrial component antennas that are configured to provide wireless radiotelephone communications using at least one of the satellite radiotelephone frequencies in a radiation pattern that increases radiation below the horizon compared to above the horizon; and
a plurality of radiotelephones that are configured to communicate with the space-based component and with the plurality of ancillary terrestrial components, the radiotelephones also including a GPS signal receiver and a GPS mode filter that is configured to suppress energy at and/or below (1575.42−
Δ
) MHz, where 0<
Δ
≦
16.42 MHz.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A radiotelephone comprising:
-
a radio front end that is configured to provide wireless radiotelephone communications using radiotelephone frequencies, and that is configured to receive global positioning satellite (GPS) signals from a plurality of global positioning satellites;
a signal processor that is configured to determine a measure of location of the radiotelephone using GPS signals received at the radio front end when providing GPS mode operations and that is configured to process communications that are received at and/or transmitted from the radio front end when providing wireless radiotelephone communications; and
a GPS mode filter that is configured to filter GPS signals received at the radio front end before being provided to the signal processor, wherein the GPS mode filter is configured to suppress energy at and/or below (1575.42−
Δ
) MHz, where 0<
Δ
≦
16.42 MHz.- View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of providing radiotelephone communications at a radiotelephone comprising a radio front end that is configured to provide wireless radiotelephone communications using radiotelephone frequencies, and that is configured to receive global positioning satellite (GPS) signals from a plurality of Global positioning satellites, the method comprising:
-
during GPS mode operations, suppressing energy at and/or below (1575.42−
Δ
) MHz for GPS signals received from the radio front end, where 0<
Δ
≦
16.42 MHz;
during GPS mode operations, determining a measure of location of the radiotelephone using the GPS signals having suppressed energy at and/or below (1575.42−
Δ
) MHz; and
during wireless radiotelephone communications, processing communications that are received at and/or transmitted from the radio front end. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
receiving an incoming call page during GPS mode operations; and
processing the incoming call page during GPS operations.
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39. The method according to claim 27, further comprising:
during GPS mode operations prior to determining the measure of location, providing low noise amplification of the GPS signals having suppressed energy at and/or below (1575.42−
Δ
) MHz.
Specification