Multiple cavity tuning of a transmitter output in a communication system
First Claim
1. A base-site in a communication system, comprising:
- a transmitter for transmitting variable frequency signals at an output; and
at least first and second cavities tuned to first and second frequencies respectively, the first and second cavities each having as input the output of the transmitter and having an output coupled to a common antenna.
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Accused Products
Abstract
A base-site (304) combines baseband frequency hopping and fast-synthesizer hopping to produce an economical frequency hopping communication system (300). The base-site (304) combines the fast-synthesizer frequency hopping capability of transmitters (307-309) with baseband frequency hopping to produce a frequency hopping communication system (300) which serves the same number of subscribers served by transmitters (208-213) in a purely baseband hopping communication system (200), but with fewer transmitters (307-309). The implementation of frequency-selective cavities (312-317) having very low loss eliminates the need for wideband hybrid combiners (112-114), which in turn eliminates transmitted-signal power loss experienced in a purely fast-synthesizer frequency hopping communication system (100).
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Citations
17 Claims
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1. A base-site in a communication system, comprising:
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a transmitter for transmitting variable frequency signals at an output; and at least first and second cavities tuned to first and second frequencies respectively, the first and second cavities each having as input the output of the transmitter and having an output coupled to a common antenna. - View Dependent Claims (2, 3)
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4. A transmission system comprising:
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a transmitter for transmitting variable frequency signals at an output; and first and second cavities, coupled to the output of said transmitter and tuned to first and second frequencies respectively, said first and second cavaties each having an output coupled to a common antenna. - View Dependent Claims (5, 6)
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7. A base-site in a communication system, the base-site transmitting signals at first and second frequencies, the base-site comprising:
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a transmitter for transmitting variable frequency signals at an output; and first and second frequency responsive means, coupled to the output of said transmitter, for frequency-tuning signals transmitted at said first and second frequencies, said first and second frequency responsive means each having an output coupled to a common antenna. - View Dependent Claims (8, 9, 10, 11)
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12. A method of transmission in a communication system, the method comprising the steps of:
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transmitting, via a transmitter, variable frequency signals; and frequency-tuning, via first and second frequency responsive means having outputs coupled to a common antenna, signals transmitted at first and second frequencies for transmission. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification