Progress in Lou7-pouw Digital Microwave Radiometer Technologies
نویسنده
چکیده
AbstracCThrce component technologies were combined into a digital correlation microwave radiometer. The radiometer comprises a duakhannel X-band superbetemdyne receiver, lowpower high-speed crosscornlator (HSCC), threelevel ADCs, and a correlated noise source (43s). The HSCC dissipates 10 mW and operates at 500 MHz clock specd. The ADCs are implemented using ECL components and dissipate more power than desired. Thus, a low-power ADC development is underway. The new ADCs arc predictsd to dissipated lcss than 200 m W and operate at 1 GSps with 1.5 GHz of input bandwidth. The CNS provides different input cornlation values for calibration of the radiometer. The correlation channel had a null o f k t of O.OOO8. Test results indicate that the mrrelation ch8nnei can be calibrated with 0.09% error in g8h.
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Progress in Low-power Digital Microwave Radiometer Technologies
Three component technologies were combined into a digital correlation microwave radiometer. The radiometer comprises a dual-channel X-band superheterodyne receiver, lowpower high-speed cross-correlator (HSCC), three-level ADCs, and a correlated noise source (CNS). The HSCC dissipates 10 mW and operates at 500 MHz clock speed. The ADCs are implemented using ECL components and dissipate more powe...
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