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Millimeter-wave radio transmitting apparatus and millimeter-wave band radio receiver and millimeter-wave band communication system
Millimeter-wave radio transmitting apparatus and millimeter-wave band radio receiver and millimeter-wave band communication system
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机译：毫米波无线电发送设备，毫米波无线电接收机和毫米波通信系统
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摘要
PROBLEM TO BE SOLVED: To provide a millimeter wave radio transmitter, a millimeter wave radio receiver and a millimeter wave band communication system, capable of improving phase noise characteristics of a local oscillator, accurately controlling respective levels of radio signal waves to be transmitted, local oscillation waves and unwanted suppression signal waves with excellent reproducibility and increasing the radio transmission distance.;SOLUTION: By using a local oscillation waves 106 outputted from a local oscillator 105, modulated signal waves 108a are frequency up-converted to a millimeter wave band by an image rejection type frequency mixer 101. Unwanted side band signal waves on the lower side of side bands on both sides generated at the time of the frequency up-conversion are suppressed. The radio signal waves 107 which are the side band signal waves on the upper side frequency up-converted by the image rejection type frequency mixer 101 and the local oscillation waves 106 for frequency down-converting the radio signal waves 107 on a reception side are transmitted simultaneously by transmission parts (103 and 104).;COPYRIGHT: (C)2003,JPO
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