| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable an n-division harmonic frequency divider (wherein, n is an integer of two or above) to be easily configured. <P>SOLUTION: The harmonic frequency divider 30 includes a harmonic mixer 32, a resonance circuit 34, and a buffer 36. The harmonic mixer 32 is equipped with a ternary multiplier 38 and a multiplier 40. The harmonic mixer 32 is composed of a single FET, and the FET functions as the multiplier 40. When output signals are input between the source and drain of the FET, a drain current becomes an odd function of a source-drain voltage due to nonlinearity, and the third harmonics occur. As the result, signals three times high in frequency can be obtained. When input signals are applied to the gate terminal of the FET, a result obtained by multiplying signals three times as high in frequency as output signals by input signals can be obtained in a drain current. As the result, the harmonic frequency divider 30 of simple configuration can be achieved. <P>COPYRIGHT: (C)2007,JPO&INPIT |
