WIRELESS TRANSCEIVER SYSTEM FOR SUPPORTING DUAL MODE
First Claim
1. A wireless transceiver system provided at a front-end of a system for supporting a dual mode, the wireless transceiver system comprising:
- a first selecting switch connected to an antenna transmitting/receiving a radio signal, the first selecting switch determining a transmitting/receiving path of a signal according to a communication system;
a first mixer for converting a transmission signal on the basis of a first frequency;
a duplexer for transmitting a transmission signal converted at the first mixer to the antenna via the first selecting switch and for receiving a reception signal received through the antenna via the first selecting switch in a first communication system;
a band-pass filter for receiving a reception signal, which is received through the antenna, via the first selecting switch, and extracting a signal in a predetermined frequency band from the reception signal in a second communication system;
a second selecting switch for selecting and outputting one of a reception signal received through the duplexer and a reception signal received through the first selecting switch according to a communication system; and
a second mixer for converting a reception signal outputted from the second selecting switch on the basis of the first frequency or a second frequency according to a communication system and for outputting the reception signal.
1 Assignment
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Accused Products
Abstract
The present invention relates to a wireless transceiver system for supporting a dual mode, and more particularly to a wireless transceiver system for supporting a dual mode that simultaneously supports the Frequency Division Duplex (FDD) method and the Time Division Duplex (TDD) method in a certain frequency band. The present system supports the FDD system conducting transmission and reception simultaneously by using different frequency bands for transmission and reception as well as the TDD system temporally alternating transmission and reception by using the common frequency band among an upper frequency band and a lower frequency band used in the FDD system as well as another frequency band adjacent thereto, thereby selectively supporting both of the two communication systems in a wireless transceiver system. Therefore, efficient use of various wireless communication standards and the limited frequency resource is provided, and on this basis, an efficient application of all wireless transceiver systems adopting the TDD system and the FDD system as well as the mobile communication base station and the terminal is provided.
27 Citations
25 Claims
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1. A wireless transceiver system provided at a front-end of a system for supporting a dual mode, the wireless transceiver system comprising:
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a first selecting switch connected to an antenna transmitting/receiving a radio signal, the first selecting switch determining a transmitting/receiving path of a signal according to a communication system; a first mixer for converting a transmission signal on the basis of a first frequency; a duplexer for transmitting a transmission signal converted at the first mixer to the antenna via the first selecting switch and for receiving a reception signal received through the antenna via the first selecting switch in a first communication system; a band-pass filter for receiving a reception signal, which is received through the antenna, via the first selecting switch, and extracting a signal in a predetermined frequency band from the reception signal in a second communication system; a second selecting switch for selecting and outputting one of a reception signal received through the duplexer and a reception signal received through the first selecting switch according to a communication system; and a second mixer for converting a reception signal outputted from the second selecting switch on the basis of the first frequency or a second frequency according to a communication system and for outputting the reception signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A wireless transceiver system provided at a front-end of a system for supporting dual mode, the wireless transceiver system comprising:
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a first selecting switch connected to an antenna transmitting/receiving a radio signal, the first selecting switch determining a transmitting/receiving path of a signal according to a communication system; a first mixer for converting a transmission signal on the basis of a first frequency or a second frequency according to a communication system; a second selecting switch for determining a path of a transmission signal converted at the first mixer according to a communication system; a duplexer for receiving a reception signal received through the antenna via the first selecting switch and for receiving a transmission signal converted at the first mixer via the second selecting switch in a first communication system and transmitting the transmission signal to the antenna via the first selecting switch; a band-pass filter for receiving a transmission signal converted at the first mixer via the second selecting switch in a second communication system and for extracting a signal having a frequency in a predetermined band and transmitting the signal to the antenna via the first selecting switch; and a second mixer for converting a signal outputted from the duplexer on the basis of a second frequency and outputting the signal. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification