Abstract: To provide a radar device capable of detecting a position of a target in a direction orthogonal to a viewing angle. In a radar device which detects a target by using a radio wave, the radar device includes: a receiving array antenna (receiving array antenna 17) where a plurality of receiving antenna elements (first receiving antenna 17-1 to eighth receiving antenna 17-8) each having a predetermined length in a first direction are arranged to be disposed in a second direction almost orthogonal to the first direction; a dispersion part (dispersion part 31) which is disposed in a vicinity of the receiving array antenna, and dispersion properties of the radio wave change with respect to the first direction; and a detection part (control and process part 15) which detects the position of the target in the first direction based on the radio wave reflected by the dispersion part.

Abstract: A pulse generating device of an in-vehicle radar configured to output a high frequency pulse including a main lobe and a side lobe includes a high frequency oscillator that generates a carrier wave of a predetermined frequency, an output variable device that adjusts an output of the high frequency oscillator, a power measuring unit that measures the output of the high frequency oscillator, a temperature measuring unit that measures an ambient temperature, a baseband pulse generating unit that generates a signal of a pulse shape, and a modulator that modulates the output of the high frequency oscillator with the signal of the pulse shape, and, when the ambient temperature is a first threshold value or less, the output or the pulse shape is adjusted so that the side lobe is a predetermined output or less.

Abstract: To detect an object present in the vicinity.

Abstract: [OBJECT] To provide a radar device capable of detecting a position of a target in a direction orthogonal to a viewing angle. [ORGANIZATION] In a radar device which detects a target by using a radio wave, the radar device includes: a receiving array antenna (receiving array antenna 17) where a plurality of receiving antenna elements (first receiving antenna 17-1 to eighth receiving antenna 17-8) each having a predetermined length in a first direction are arranged to be disposed in a second direction almost orthogonal to the first direction; a dispersion part (dispersion part 31) which is disposed in a vicinity of the receiving array antenna, and dispersion properties of the radio wave change with respect to the first direction; and a detection part (control and process part 15) which detects the position of the target in the first direction based on the radio wave reflected by the dispersion part.

Abstract: A pulse generating device of an in-vehicle radar configured to output a high frequency pulse including a main lobe and a side lobe includes a high frequency oscillator that generates a carrier wave of a predetermined frequency, an output variable device that adjusts an output of the high frequency oscillator, a power measuring unit that measures the output of the high frequency oscillator, a temperature measuring unit that measures an ambient temperature, a baseband pulse generating unit that generates a signal of a pulse shape, and a modulator that modulates the output of the high frequency oscillator with the signal of the pulse shape, and, when the ambient temperature is a first threshold value or less, the output or the pulse shape is adjusted so that the side lobe is a predetermined output or less.

Abstract: A radar device that transmits a high frequency signal and detects an object by a reflected wave that is reflected by the object includes a transmitting antenna that transmits the high frequency signal, a receiving antenna that receives a reflected wave that is transmitted by the transmitting antenna and reflected by the object, and a dummy antenna that attenuates a reflected wave that is reflected by a structure arranged on a transmission path of the high frequency signal. The dummy antenna is configured be selectable as an antenna having another function.

Abstract: A radar device that transmits a high frequency signal and detects an object by a reflected wave that is reflected by the object includes a transmitting antenna that transmits the high frequency signal, a receiving antenna that receives a reflected wave that is transmitted by the transmitting antenna and reflected by the object, and a dummy antenna that attenuates a reflected wave that is reflected by a structure arranged on a transmission path of the high frequency signal. The dummy antenna is configured be selectable as an antenna having another function.

Abstract: A high-frequency circuit board capable of easily forming a bias line whose resonance frequency is sufficiently separated from operating frequency is provided. On a high-frequency circuit board 100, by electrically connecting a bias line 11 to a high-frequency circuit 10 using blind via holes 106 and 107, it is possible to limit the route that has a possibility of producing resonance only to the bias line connecting the ends 106a and 107a of the blind via holes 106 and 107 to the bias line 11. By adjusting the route length from the end 106a to the end 107a, it is possible to prevent production of resonance in the vicinity of the operating frequency.

Abstract: A radar device capable of removing noise signals before digital conversion and detecting an object with high precision by a simple configuration is provided. In a transmitting RF unit 110, a signal switch 141 is switched so that the noise signal generated by the operation of a first switch 111 passes through a signal delaying device 142. The signal switch 141 is switched so that the noise signal generated by the operation of a second switch 112 passes through a signal delaying device 143. Furthermore, the signal switch 141 is switched so that a baseband pulse signal obtained when the first switch 111 and the second switch 112 are operated at the same time passes through a signal delaying device 144. In a signal synthesizer 145, synthesizing is carried out so that the noise signals mixed in pulse signals are cancelled out.

Abstract: A high-frequency circuit board capable of easily forming a bias line whose resonance frequency is sufficiently separated from operating frequency is provided. On a high-frequency circuit board 100, by electrically connecting a bias line 11 to a high-frequency circuit 10 using blind via holes 106 and 107, it is possible to limit the route that has a possibility of producing resonance only to the bias line connecting the ends 106a and 107a of the blind via holes 106 and 107 to the bias line 11. By adjusting the route length from the end 106a to the end 107a, it is possible to prevent production of resonance in the vicinity of the operating frequency.

Abstract: A low noise amplification circuit comprises a low noise amplifier and a filter coupled to the input terminal of the low noise amplifier. The low noise amplifier comprises an amplifying element and a matching input circuit coupled to the input terminal of the amplifying element. When gamma.sub.s shows a reflection factor in the case that signals flow from the input terminal of the amplifying element to the output terminal of the matching input circuit, impedance conversion for setting the gamma.sub.s at a desired value is made entirely or in part by means of setting the output impedance of the filter at the value different from that of characteristic impedance.

Abstract: A low noise amplification circuit comprises a low noise amplifier and a filter coupled to the input terminal of the low noise amplifier. The low noise amplifier comprises an amplifying element and a matching input circuit coupled to the input terminal of the amplifying element. When gamma.sub.s shows a reflection factor in the case that signals flow from the input terminal of the amplifying element to the output terminal of the matching input circuit, impedance conversion for setting the gamma.sub.s at a desired value is made entirely or in part by means of setting the output impedance of the filter at the value different from that of characteristic impedance.