Abstract:
A local oscillation signal level adjustment circuit includes: a local oscillation circuit that outputs a local oscillation signal; a variable gain amplifier that amplifies the local oscillation signal level; a frequency conversion circuit that converts a radio signal into an analog baseband signal by using the local oscillation signal thus amplified; an A/D converter that converts the analog baseband signal into an output code of a digital baseband signal; and a control circuit that controls a gain of the variable gain amplifier on a basis of the output code of the digital baseband signal, wherein the control circuit increases the gain of the variable gain amplifier until the output code of the digital baseband signal becomes saturated.
Abstract translation:本地振荡信号电平调整电路包括:输出本地振荡信号的本地振荡电路; 放大本地振荡信号电平的可变增益放大器; 频率转换电路,通过使用如此放大的本地振荡信号将无线信号转换为模拟基带信号; A / D转换器,将模拟基带信号转换为数字基带信号的输出码; 以及控制电路,其基于所述数字基带信号的输出码来控制所述可变增益放大器的增益,其中,所述控制电路增加所述可变增益放大器的增益,直到所述数字基带信号的输出代码变为饱和。
Abstract:
A radar apparatus includes a transmitter including a plurality of circuits that intermittently transmit one or more radar signals, the plurality of circuits being suspended power supplying during a period in which the one or more radar signals are not transmitted, variation detection circuitry that detects process variations of the plurality of circuits, and determination circuitry that determines a startup timing of each of the plurality of circuits in response to the process variations and outputs startup commands in response to the determined startup timings to the plurality of circuits.