Patent
Voltage controlled oscillator, voltage controlled oscillator device and radar device
Sadao Yamashita,Haruta Kazumasa +1 more
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TLDR
In this article, the presence or absence of oscillation or a failure of the varactor diode or oscillation device is detected by a detection signal, for example, from the variable reactance element (VRE) as monitored by a voltage monitor, and/or from the oscillation devices, as monitoring by a current sensing device.Abstract:
A voltage controlled oscillator, a voltage controlled oscillator device, and a radar device provided therewith which can detect when the oscillation frequency becomes uncontrollable. According to one embodiment, a Gunn or other oscillation device is connected to a main line and a varactor diode which is a variable reactance element is connected between the main line and a sub line to constitute a voltage controlled oscillator. A control voltage is applied to the varactor diode via a switching circuit, and the presence or absence of oscillation or a failure of the varactor diode or oscillation device is detected by a detection signal, for example, from the varactor diode as monitored by a voltage monitor, and/or from the oscillation device, as monitored by a current sensing device.read more
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Patent
Short-range automotive radar transceiver
Nikolai S. Boltovets,Vladimir V. Basanets,Aleksander V. Zorenko,Sergei B. Maltsev,Anatoliy F. Odnolko,Vasilii I. Rudyk,Dmitrii V. Sobolev,Serguei D. Shevchuk,Alexander S. Markov,Iryna A. Maltseva,Andrei V. Pavlyuchenko,Vladimir P. Rukin,Sergei V. Makovenko,David S. Breed +13 more
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References
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Patent
Varactor tuned microstrip line resonator and vco using same
TL;DR: In this paper, a low noise, wide tuning bandwidth, voltage controlled oscillator employs a resonator circuit formed from at least two microstrip lines (42, 44) which are electromagnetically coupled to one another.
Patent
Voltage-controlled oscillator
TL;DR: In this paper, a voltage-controlled oscillator with a reference crystal oscillator is presented, where the frequency of the crystal is phase-locked to cancel a phase-noise component generated in the oscillator.
Patent
Automobile collision prevention radar with own action failure detection function
TL;DR: In this article, a conductivity detection circuit detects the conductivity condition by detecting current or voltage and outputs a detection signal S8 when the sections between the predetermined number of electrodes 14 come in the conductivities condition due to adhesion of muddy water 17 on the surface of the radome 13 and freezing of the surface.
Patent
Automobile collision preventing radar with self-fault detecting function
TL;DR: In this article, the radar is provided with a gate current detecting and diagnosing circuit 11 which detects the gate current Ig of each device, such as an oscillator 1, transmission-side amplifier 2, multiplier 3, reception side amplifier 6, mixer 7, etc., and judges whether or not the current Ig is an adequate operating current.