| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve a search range during the application to a millimeter wave radar or the like by cutting off a millimeter wave signal for transmission reflected on a connection part between an NRD guide and a dielectric waveguide or the like or leaked from a circulator before inputted through a mixer to an amplifier as a spurious signal. <P>SOLUTION: In the millimeter wave transmitter/receiver having a transmitting/receiving antenna, the output terminal of a mixer 15 is provided with a switching control part composed of a switch 16 and a control part 19 for opening the output terminal when the pulse-modulated millimeter wave signal for transmission is outputted from a pulse modulator 12. <P>COPYRIGHT: (C)2003,JPO |
