FREQUENCY MIXER

摘要

PROBLEM TO BE SOLVED: To provide a frequency mixer with a simpler configuration. SOLUTION: This mixer is provided with a PIN type photodiode 10 which has a nonlinear characteristic in the neighborhood of 0V voltage in a current- voltage characteristic at the time of being irradiated with bias light having a prescribed light power. Here, a frequency-mixed signal after the frequencies of 1st and 2nd electric signals are mixed is outputted from the photodiode 10 by setting an operation point in the neighborhood of 0V voltage, synthesizing the 1st and 2nd inputted electric signals by a signal synthesizer 23 and applying it to the photodiode 10.