Wireless Communication Device
First Claim
1. A wireless communication device for relay transmission of communication signals transmitted and received by a time division multiduplexing type modem with a counterpart wireless communication device as wireless signals, comprising:
- a first circulator connected to the modem so as to out put transmitting signals from the modem to one connection terminal, and outputting input signals from other connection terminal to the modem;
transmission side frequency conversion means for rising frequencies of the output signals from said one connection terminal of the first circulator by a predetermined frequency width, and outputting the output signals;
a transmit antenna for wireless transmission of the output signals from the transmission side frequency conversion means;
a receive antenna for receiving wireless signals; and
reception side frequency conversion means for lowering frequencies of the receiving signals by the receive antenna by a predetermined frequency width, and outputting the receive signals to said other connection terminal of the first circulator.
1 Assignment
0 Petitions
Accused Products
Abstract
Existing modems of time division duplex (TDD) type can be utilized without modification to perform a high speed wireless communication with stable communication quality in other frequency bands such as quasi-millimeter to millimeter wave bands. There are included a circulator (11) connected to TDD modems (1, 2) and receives signals transmitted thereby to output those signals from a first connection terminal (p1) and outputs signals received at a second connection terminal (p2) to the TDD modems (1, 2), and a frequency converter (2a) that raise the frequency of the signals from the circulator (11) by a predetermined frequency width and lowers the frequency of signals from a receive antenna (32) by a predetermined frequency width. It may be arranged that the frequency conversion width be made different between the uplink and downlink and that a filter, which blocks the transmitting wireless frequency and passes the receiving wireless frequency, is provided between the receive antenna (32) and a frequency converter (22a).
26 Citations
19 Claims
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1. A wireless communication device for relay transmission of communication signals transmitted and received by a time division multiduplexing type modem with a counterpart wireless communication device as wireless signals, comprising:
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a first circulator connected to the modem so as to out put transmitting signals from the modem to one connection terminal, and outputting input signals from other connection terminal to the modem;
transmission side frequency conversion means for rising frequencies of the output signals from said one connection terminal of the first circulator by a predetermined frequency width, and outputting the output signals;
a transmit antenna for wireless transmission of the output signals from the transmission side frequency conversion means;
a receive antenna for receiving wireless signals; and
reception side frequency conversion means for lowering frequencies of the receiving signals by the receive antenna by a predetermined frequency width, and outputting the receive signals to said other connection terminal of the first circulator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification