Radio communication system and a repeater
First Claim
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1. A repeater repeating a signal for a communication between a base station and a mobile terminal, which is provided between leaky coaxial cables connected in series from the base station, the repeater comprising:
- a first duplexer connected to a base station side leaky coaxial cable, which electrically separates an input signal from the base station side leaky coaxial cable from a signal to be output to the base station side leaky coaxial cable;
a first amplifier connected to the first duplexer;
a frequency-converting circuit connected to the first amplifier, which converts a frequency of an input signal into a different frequency and outputs a frequency-converted signal;
a second amplifier connected to the frequency-converting circuit; and
a power divider connected to the second amplifier, which divides an input signal and outputs divided signals to plural paths including a path to the first duplexer,wherein the repeater converts a frequency of the input signal from the base station side leaky coaxial cable into a different frequency, and outputs a frequency-converted signal to the base station side leaky coaxial cable.
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Abstract
A radio communication system for a communication between a base station and a mobile terminal. The radio communication system repeats a signal transmitted from the base station at repeaters that are multistage-connected by a leaky coaxial cable. Each repeater converts a frequency of an input signal into a different frequency and outputs the frequency-converted signal to the leaky coaxial cable connected to the repeater. The repeaters are provided between the leaky coaxial cables connected in series.
4 Citations
7 Claims
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1. A repeater repeating a signal for a communication between a base station and a mobile terminal, which is provided between leaky coaxial cables connected in series from the base station, the repeater comprising:
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a first duplexer connected to a base station side leaky coaxial cable, which electrically separates an input signal from the base station side leaky coaxial cable from a signal to be output to the base station side leaky coaxial cable; a first amplifier connected to the first duplexer; a frequency-converting circuit connected to the first amplifier, which converts a frequency of an input signal into a different frequency and outputs a frequency-converted signal; a second amplifier connected to the frequency-converting circuit; and a power divider connected to the second amplifier, which divides an input signal and outputs divided signals to plural paths including a path to the first duplexer, wherein the repeater converts a frequency of the input signal from the base station side leaky coaxial cable into a different frequency, and outputs a frequency-converted signal to the base station side leaky coaxial cable. - View Dependent Claims (2, 3)
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4. A repeater repeating a signal for a communication between a base station and a mobile terminal, which is provided between leaky coaxial cables connected in series from the base station, converts a frequency of an input signal from a base station side leaky coaxial cable to a different frequency, and outputs the frequency-converted signal to the base station side leaky coaxial cable, the repeater comprising:
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a first circulator connected to the base station side leaky coaxial cable; a first amplifier connected to the first circulator; a first power divider connected to the first amplifier, which divides an input signal and outputs divided signals to plural paths; a first frequency-converting circuit connected to an output port of the first power divider, which converts a frequency of an input signal into a different frequency and outputs a frequency-converted signal; a second amplifier connected to the first frequency-converting circuit; a second power divider connected to the second amplifier, which divides an input signal and outputs divided signals to the plural paths; a second circulator connected to an output port of the second power divider; a first power combiner connected to the second circulator and an other output port of the first power divider, which synthesizes signals supplied from the plural paths; a second frequency-converting circuit connected to the first power combiner, which converts a frequency of an input signal into a different frequency and outputs a frequency-converted signal; a second power combiner connected to the second frequency-converting circuit and an other output port of the second power divider, which synthesizes signals supplied from the plural paths; and a third amplifier having an input port connected to the second power combiner and an output port connected to the first circulator. - View Dependent Claims (5, 6, 7)
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Specification