Frequency-Dependent Filtering for Wireless Communications Transmitters
First Claim
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1. A method of transmitting information in a wireless communications system comprising:
- selectively applying filtering to transmission of a carrier signal of a first band of frequencies of a wireless communications system based on a frequency separation distance between a frequency content of the carrier signal and a second band of frequencies allocated to a communications system other than the wireless communications system.
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Abstract
A method of transmitting information in a wireless communications system can be provided by selectively applying filtering to transmission of a carrier signal of a first band of frequencies of a wireless communications system based on a frequency separation distance between a frequency content of the carrier signal and a second band of frequencies allocated to a communications system other than the wireless communications system.
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Citations
32 Claims
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1. A method of transmitting information in a wireless communications system comprising:
selectively applying filtering to transmission of a carrier signal of a first band of frequencies of a wireless communications system based on a frequency separation distance between a frequency content of the carrier signal and a second band of frequencies allocated to a communications system other than the wireless communications system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A communications circuit in an Ancillary Terrestrial Component (ATC) of a wireless communications system, the circuit comprising:
a transmitter circuit configured to selectively filter transmission of a carrier signal for a first band of frequencies based on a frequency separation distance between a frequency content of the carrier signal and a second band of frequencies allocated to a communications system other than the wireless communications system. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A transmitter circuit in an Ancillary Terrestrial Component (ATC) of a wireless communications system, the circuit comprising:
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a power amplifier circuit configured to amplify radiofrequency communications signals for transmission;
a filter circuit configured to filter the transmission of the carrier signal when coupled to the power amplifier circuit;
a switch circuit coupled to an input and/or output of the filter circuit;
an antenna coupled to the output of the filter circuit and/or the power amplifier circuit; and
a control circuit coupled to the switch circuit, the control circuit configured to operate the switch based on a frequency content of a carrier signal transmitted by the transmitter circuit. - View Dependent Claims (29, 30, 31, 32)
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Specification