Radio communication apparatus and its transmission and reception circuit
First Claim
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1. A radio communication apparatus comprising:
- a first transmission and reception section having a first reception section that receives a first received signal with a first frequency band and a first transmission section that transmits a first transmitted signal with the first frequency band;
a second transmission and reception section having a second reception section that receives a second received signal with a second frequency band and a second transmission section that transmits a second transmitted signal with the second frequency band, the second transmission and reception section having the same intermediate frequency as that of the first transmission and reception section; and
a control circuit that sets one of the first and second transmission and reception sections in an operation mode and, while setting the other of the first and second transmission and reception sections in a stop mode.
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Abstract
A radio communication apparatus includes a first transmission and reception section that executes process of receiving and transmitting a signal with a first frequency band, a second transmission and reception section that executes process of receiving and transmitting a signal with a second frequency band, and a control circuit that sets, in an operation mode, one of the respective transmission and reception sections which uses a frequency band with which a signal is transmitted and received, while setting the other transmission and reception sections in a stop mode.
68 Citations
14 Claims
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1. A radio communication apparatus comprising:
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a first transmission and reception section having a first reception section that receives a first received signal with a first frequency band and a first transmission section that transmits a first transmitted signal with the first frequency band;
a second transmission and reception section having a second reception section that receives a second received signal with a second frequency band and a second transmission section that transmits a second transmitted signal with the second frequency band, the second transmission and reception section having the same intermediate frequency as that of the first transmission and reception section; and
a control circuit that sets one of the first and second transmission and reception sections in an operation mode and, while setting the other of the first and second transmission and reception sections in a stop mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A transmission and reception circuit comprising:
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a first transmission and reception section having a first reception section that receives a first received signal with a first frequency band, a first transmission section that transmits a first transmitted signal with the first frequency band, and a first input section to which an external control signal is inputted; and
a second transmission and reception section having a second reception section that receives a second received signal with a second frequency band, a second transmission section that transmits a second transmitted signal with the second frequency band, and a second input section to which an external control signal is inputted, the second transmission and reception section having the same intermediate frequency as that of the first transmission and reception section, and wherein the first transmission and reception section sets the first reception section and the first transmission section in an operation mode if a operation control signal is inputted to the first input section, the operation control signal indicating that transmission and reception will be carried out, while setting the first reception section and the first transmission section in a stop mode if a stop control signal is inputted to the first input section, the stop control signal indicating that the transmission and reception will not be carried out, and the second transmission and reception section sets the second reception section and the second transmission section in the operation mode if the operation control signal is inputted to the second input section, while setting the second reception section and the second transmission section in the stop mode if the stop control signal is inputted to the second input section. - View Dependent Claims (13, 14)
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Specification