1. One relates to noise factor while the other relates to noise temperature . 2. Thus the noise temperature is proportional to the power spectral density of the noise, P / B. 3. This particular design had very low sidelobes, and thus made very low receiving system noise temperatures possible. 4. Plot used in the Y-factor method for determining the gain and noise temperature of an amplifier. 5. Typical receiver noise temperatures at 115.3 GHz are 65-70 K single sideband ( SSB ). 6. The antenna noise temperature T _ { ant } gives the noise power seen at the output of the antenna. 7. The low-noise quality of an LNB is expressed as the noise figure ( or sometimes noise temperature ). 8. Thus it doesn't make sense to talk about the noise temperature of a capacitor or of a voltage source. 9. The noise temperature of the receiver circuitry T _ { sys } represents noise generated by noisy components inside the receiver. 10. The whole system noise temperature looking at cold sky ( 2.7 kelvins in the microwave band ) was 17 kelvins.
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