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噪声源

2013-01-28 17:22:32  嘉兆科技（深圳）有限公司  发布

详细信息

 

For more than 30 years, Micronetics has been designing and manufacturing Noise Source Products that enable the predictability of RF systems under real-world noise conditions. 

The Problem: Noise is a random and unpredictable natural phenomenon that occurs everywhere. In RF communication systems; whether wireless, microwave, satellite, audio or video, noise emanates from every component inside the system, sending out "unwanted" signals through the network. Since RF communication receivers often have to process weak signals, the unwanted noise signal, even if it comes from the tiniest component in the system, can easily obscure a signal, resulting in poor overall system performance. 

The Solution: When designing a new system, or working to improve an existing one, noise itself can be a helpful tool for finding and measuring unwanted noise levels within the system design. 

If a known level of noise is injected into an RF system, it becomes a reference point, or benchmark, against which to gauge unwanted noise levels. The difference between the known, injected noise level and the actual noise level provides the system "noise figure", which is an extremely useful number widely employed by system engineers in the design process. 

Once the noise figure is known, the overall system sensitivity is easily determined. Noise figure also provides the basis on which to evaluate and compare one RF system to another. While there are many other measuring devices that characterize the entire RF system, noise is unique in that it can be used to characterize individual components within the system as well - amplifiers, filters, switches. In this way, noise can be used to seek out the biggest single contributors to overall system noise levels, giving system designers and engineers a practical starting point for designing RF systems that will perform well under real-world noise conditions.

 

 

Product Listing
Model Low Freq High Freq Noise
Output (ENR) 		Bias
Voltage (V) 		HTML PDF
CI821 8.5 GHz 9.6 GHz 34.5 dB Min 28 HTML PDF
CNS7105-D1C 100 kHz 3 MHz 101 dB Min 12 HTML PDF
CNS7106-D1C 200 kHz 12 MHz 79 dB Min 12 HTML PDF
CNS7108-D1C 50 kHz 100 MHz 85 dB Min 12 HTML PDF
CNS7109-D1C 5 MHz 500 MHz 70 dB Min 12 HTML PDF
CNS7114-C2A         HTML PDF
NC501SM-12 200 kHz 500 MHz 31 dB Min 12 HTML PDF
NC501SM-15 200 kHz 500 MHz 31 dB Min 15 HTML PDF
NC501SM-28 200 kHz 500 MHz 31 dB Min 28 HTML PDF
NC502SM-12 200 kHz 1 GHz 31 dB Min 12 HTML PDF
NC502SM-15 200 kHz 1 GHz 31 dB Min 15 HTML PDF
NC502SM-28 200 kHz 1 GHz 31 dB Min 28 HTML PDF
NC503SM-12 200 kHz 2 GHz 31 dB Min 12 HTML PDF
NC503SM-15 200 kHz 2 GHz 31 dB Min 15 HTML PDF
NC503SM-28 200 kHz 2 GHz 31 dB Min 28 HTML PDF
NC504SM-12 200 kHz 3.5 GHz 31 dB Min 12 HTML PDF
NC504SM-15 200 kHz 3.5 GHz 31 dB Min 15 HTML PDF
NC504SM-28 200 kHz 3.5 GHz 31 dB Min 28 HTML PDF
NFP1003 100 MHz 3 GHz 43 - 48 dB (100 MHz - 1 GHz) 12 to 28 HTML PDF
NMA2003-A1D 100 Hz 1 MHz 87 dB Min 15 HTML PDF
NMA2003-A2S 100 Hz 1 MHz 87 dB Min 15 HTML PDF
NMA2004-A1D 100 Hz 3 MHz 82.2 dB Min 15 HTML PDF
NMA2004-A2S 100 Hz 3 MHz 82.2 dB Min 15 HTML PDF
NMA2005-A1D 100 Hz 10 MHz 77 dB Min 15 HTML PDF
NMA2005-A2S 100 Hz 10 MHz 77 dB Min 15 HTML PDF
NMA2006-A1D 100 Hz 30 MHz 72.2 dB Min 15 HTML PDF
NMA2006-A2S 100 Hz 30 MHz 72.2 dB Min 15 HTML PDF
NMA2007-A1D 500 Hz 100 MHz 67 dB Min 15 HTML PDF
NMA2007-A2S 500 Hz 100 MHz 67 dB Min 15 HTML PDF
NMA2008-A1D 500 Hz 300 MHz 62.2 dB Min 15 HTML PDF
NMA2008-A2S 500 Hz 300 MHz 62.2 dB Min 15 HTML PDF
NMA2009-A1D 500 Hz 500 MHz 60 dB Min 15 HTML PDF
NMA2009-A2S 500 Hz 500 MHz 60 dB Min 15 HTML PDF
NMA2010-A1D 100 kHz 1000 MHz 57 dB Min 15 HTML PDF
NMA2010-A2S 100 kHz 1000 MHz 57 dB Min 15 HTML PDF
NMA2011-A1D 100 kHz 1500 MHz 55.2 dB Min 15 HTML PDF
NMA2011-A2S 100 kHz 1500 MHz 55.2 dB Min 15 HTML PDF
NMA2012-A1D 100 kHz 2000 MHz 54 dB Min 15 HTML PDF
NMA2012-A2S 100 kHz 2000 MHz 54 dB Min 15 HTML PDF
NMA2103-A1E 100 Hz 1 MHz 116.5 dB Min 15 HTML PDF
NMA2103-A2S 100 Hz 1 MHz 116.5 dB Min 15 HTML PDF
NMA2104-A1E 100 Hz 3 MHz 111.8 Min 15 HTML PDF
NMA2104-A2S 100 Hz 3 MHz 111.8 Min 15 HTML PDF
NMA2105-A1E 100 Hz 10 MHz 106.5 dB 15 HTML PDF
NMA2105-A2S 100 Hz 10 MHz 106.5 dB Min 15 HTML PDF
NMA2106-A1E 100 Hz 30 MHz 101.8 dB 15 HTML PDF
NMA2106-A2S 100 Hz 30 MHz 101.8 dB Min 15 HTML PDF
NMA2107-A1E 1 kHz 100 MHz 96.6 dB 15 HTML PDF
NMA2107-A2S 1 kHz 100 MHz 96.6 dB Min 15 HTML PDF
NMA2108-A1E 1 kHz 300 MHz 91.8 dB 15 HTML PDF
NMA2108-A2S 1 kHz 300 MHz 91.8 dB Min 15 HTML PDF
NMA2109-A1E 1 kHz 500 MHz 99.6 dB 15 HTML PDF
NMA2109-A2S 1 kHz 500 MHz 99.6 dB Min 15 HTML PDF
NMA2110-A1E 1 kHz 1000 MHz 86.6 dB 15 HTML PDF
NMA2110-A2S 1 kHz 1000 MHz 32 to 35 dB 15 HTML PDF
NMA2110-CS3 1 MHz 1000 MHz 81 - 84 dB 11.8 to 13 HTML PDF
NMA2218-A1T 1 GHz 18 GHz 32 to 35 dB 15 HTML PDF
NMA2218-A2T 1 GHz 18 GHz 32 to 35 dB 15 HTML PDF
NMA2410-A1S 10 MHz 1000 MHz 84 dB Min 15 HTML PDF
NMA2410-A1T 10 MHz 1000 MHz 84 dB Min 15 HTML PDF
NMA2410-A2S 10 MHz 1000 MHz 84 dB Min 15 HTML PDF
NMA2410-A2T 10 MHz 1000 MHz 84 dB 15 HTML PDF
NMA2410-B1T 10 MHz 1000 MHz 84 dB Min 12 HTML PDF
NMA2410-B2S 10 MHz 1000 MHz 84 dB Min 12 HTML
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