Yüksek çözünürlüklü FMCW radar

The radar is a device that measures the range and speed of targets using radio frequency (RF) signals. The main purpose of a radar sensor is to detect all targets within the observation area and simultaneously estimate the target range and relative velocity with a high update rate. Frequency Modulated Continuous Wave (FMCW) is capable of measuring speed and range simultaneously. FMSD radar is often preferred for short-range measurements and applications requiring high resolution. FMCW radar uses a Voltage Controlled Oscillator (VCO) to modulate the frequency of the transmit signal. The VCO modulates its frequency according to the input voltage. But for the input voltage, the output frequency is not linear. Range resolution deteriorates considerably if the modulated signal is nonlinear. Modular components; When using mixers, low noise amplifiers, and power amplifiers, time delays on cables are critical. The range resolution deteriorates as the resulting losses change the beat frequency. To achieve high resolution, losses must be considered in the design of the components. In this thesis, theoretical research and design were carried out to increase the range resolution of the C band FMSD radar and to reduce the range error. The designed radar is aimed to work with low power, be low cost, and provide high resolution. While VCO, mixer and amplifiers are used ready, antenna and power divider are designed. High isolation and good matching have been achieved with the power divider design. The microstrip patch antenna design is simulated due to its low-power operation.