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K-MC4 데이터시트(PDF) 10 Page - RFbeam Microwave GmbH |
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K-MC4 데이터시트(HTML) 10 Page - RFbeam Microwave GmbH |
10 / 11 page K-MC4 MONOPULSE RADAR TRANSCEIVER Datasheet Sampling Requirements Using RSW requires sampling of the IF signals during the active enable time. Normally, AD conversion and asserting /Enable signal on K-MC4 must be synchronized. If the ADC contains a sample-and-hold (S&H) device, sampling command can be fired at the end of the /Enable signal. Enable time ton must be > 5µs or > setup time of the S&H, whatever value is higher. If the ADC does not contain a S&H input stage, conversion command should be issued at the very beginning of the enable period. Enable time ton must be > 5µs or > 1/bandwidth of the ADC, whatever value is higher. Sensitivity and Maximum Range The values indicated here are intended to give you a 'feeling' of the attainable detection range with this module. It is not possible to define an exact RCS (radar cross section) value of real objects because reflectivity depends on many parameters. The RCS variations however influence the maximum range only by 4 . Maximum range for Doppler movement depends mainly on: - Module sensitivity S: -134dBc (@1kHz IF Bandwidth) - Carrier frequency f0: 24.125GHz - Radar cross section RCS ("reflectivity") of the object 1): 1m2 approx. for a moving person >50m2 for a moving car note 1) RCS indications are very inaccurate and may vary by factors of 10 and more. The famous "Radar Equation" may be reduced for our K-band module to the following relation: 4 40 10 0167 . 0 s r Using this formula, you get an indicative detection range of - > 37 meters for a moving person - > 93 meters for a moving car Please note, that range values also highly depend on the performance of signal processing, environment conditions (i.e. rain, fog), hoµsing of the module and other factors. With K-MC3, you can achieve a maximum range of more than 500m when µsing high resolution AD- converters and selective FFT algorithms. © RFbeam Microwave GmbH, Schuppisstrasse 7, CH-9016 St. Gallen Page 10/11 |
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