| 摘要 |
<p>PURPOSE:To provide a cubic circuit structure to construct a microwave detector of multiband where two local oscillators which work in time division and alternately to a horn antenna and a mixer are combined. CONSTITUTION:A cubic circuit main body 1 includes a 2-port cavity 5 and a 1-port cavity 6 which are connected in series at the inside of a throat part 4 of a horn antenna 3. Then a mixer diode 7 is added to the part 4, and the 1st local oscillators 9a and 9b are provided to the cavity 5. Meanwhile the 2nd local oscillators 10a and 10b are provided in the cavity 6.</p> |
