Abstract: A common mode noise filter includes a non-magnetic body and first to third coil conductors provided inside the non-magnetic body. The second coil conductor is provided in a downward direction from the first coil conductor. The third coil conductor is provided in the downward direction from the second coil conductor. The first and third coil conductors deviate in a direction perpendicular to the downward direction with respect to the second coil conductor. At least one of the first and third coil conductors overlaps the second coil conductor viewing from the direction perpendicular to the downward direction. This common mode noise filter allows these coil conductors to be magnetically coupled to each other with a preferable balance, thereby preventing degradation of differential signals.

Abstract: Disclosed herein is a frequency modulated continuous wave (FMCW) radar. The FMCW radar includes: a transmission signal generator that generates a frequency-modulated transmission signal; a transmission signal sender that sends the transmission signal; a receiver that receives a reflected wave of the transmission signal; an adjuster that adjusts the amplitude and phase of a cancel signal, which cancels a leakage signal component in a received signal, in accordance with a variation in the frequency of the transmission signal; and a superimposer that superimposes the cancel signal over the received signal to cancel the leakage signal component.

Abstract: A common mode noise filter includes a non-magnetic body and first to third coil conductors provided inside the non-magnetic body. The second coil conductor is provided in a downward direction from the first coil conductor. The third coil conductor is provided in the downward direction from the second coil conductor. The first and third coil conductors deviate in a direction perpendicular to the downward direction with respect to the second coil conductor. At least one of the first and third coil conductors overlaps the second coil conductor viewing from the direction perpendicular to the downward direction. This common mode noise filter allows these coil conductors to be magnetically coupled to each other with a preferable balance, thereby preventing degradation of differential signals.

Abstract: Disclosed herein is a frequency modulated continuous wave (FMCW) radar. The FMCW radar includes: a transmission signal generator that generates a frequency-modulated transmission signal; a transmission signal sender that sends the transmission signal; a receiver that receives a reflected wave of the transmission signal; an adjuster that adjusts the amplitude and phase of a cancel signal, which cancels a leakage signal component in a received signal, in accordance with a variation in the frequency of the transmission signal; and a superimposer that superimposes the cancel signal over the received signal to cancel the leakage signal component.

Abstract: In the stop state of a VCO and an injection locked frequency divider, an ILFD controller sets the control parameter of an injection locked frequency divider on the basis of the frequencies of a reference signal and the frequency-divided signal measured according to the control parameter of the injection locked frequency divider. While the injection locked frequency divider is operated and in the stop state of the VCO, the ILFD controller sets the control parameter of the injection locked frequency divider on the basis of the frequencies of the reference signal and the frequency-divided signal measured according to the control parameter of the injection locked frequency divider.

Abstract: In the stop state of a VCO and an injection locked frequency divider, an ILFD controller sets the control parameter of an injection locked frequency divider on the basis of the frequencies of a reference signal and the frequency-divided signal measured according to the control parameter of the injection locked frequency divider. While the injection locked frequency divider is operated and in the stop state of the VCO, the ILFD controller sets the control parameter of the injection locked frequency divider on the basis of the frequencies of the reference signal and the frequency-divided signal measured according to the control parameter of the injection locked frequency divider.

Abstract: A fractional frequency divider (28) includes a latch (31) for holding frequency division data, a ?? modulator (33), a digital dither circuit (32) for receiving a digital input F representing fraction part of the frequency division data from the latch (31) and supplying a digital output alternately changing between F+k and F?k (where k is an integer) or a F value itself to the ?? modulator (33), and circuit means (34 through 38) for executing fractional frequency division based on integer part (M value) of the frequency division data and an output of the ?? modulator (33). The digital dither circuit (32) is useful for suppressing a spurious signal generated as a result of concentration of quantization noise at a particular frequency when the ?? modulator (33) receives a particular F value (e.g., F=2n?1).

Abstract: A fractional frequency divider (28) includes a latch (31) for holding frequency division data, a ?? modulator (33), a digital dither circuit (32) for receiving a digital input F representing fraction part of the frequency division data from the latch (31) and supplying a digital output alternately changing between F+k and F?k (where k is an integer) or a F value itself to the ?? modulator (33), and circuit means (34 through 38) for executing fractional frequency division based on integer part (M value) of the frequency division data and an output of the ?? modulator (33). The digital dither circuit (32) is useful for suppressing a spurious signal generated as a result of concentration of quantization noise at a particular frequency when the ?? modulator (33) receives a particular F value (e.g., F=2n?1).