| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To eliminate transmission of high-level radio frequency band signals to a plurality of individual transmitting/receiving units, to avoid detrimental effects on the operation of each unit, and to decrease introduction level errors, by reducing the attenuation amount of a reference signal level at a reference signal introducing unit. <P>SOLUTION: A reference signal distributing unit 60 is provided for converting a baseband reference signal ref (BB) from a reference signal generator into a radio-frequency band reference signal ref (RF) and for supplying it to each individual transmitting/receiving unit 20. According to this arrangement, a frequency converter can be eliminated from a reference signal introducing unit of each individual transmitting/receiving unit 20, the level of the reference signal for the reference signal introducing unit can be lowered, the attenuation amount of a variable attenuator for level attenuation can be reduced, and errors in the reference signal introduction level for receiving system circuits are made small. <P>COPYRIGHT: (C)2004,JPO</p> |
