The increase in the bandwidth of the antenna causes the thermal noise power to ______(a) decrease linearly(b) increase linearly(c) increase exponentially(d) decrease exponentiallyThis question was addressed to me during a job interview.My doubt stems from Antenna Tradeoffs topic in section Technology Tradeoffs in Software Defined Radio of Cognitive Radio

The increase in the bandwidth of the antenna causes the thermal noise

1.	The increase in the bandwidth of the antenna causes the thermal noise power to ______(a) decrease linearly(b) increase linearly(c) increase exponentially(d) decrease exponentiallyThis question was addressed to me during a job interview.My doubt stems from Antenna Tradeoffs topic in section Technology Tradeoffs in Software Defined Radio of Cognitive Radio
Answer» The CORRECT choice is (B) increase linearly The BEST I can explain: WIDER bandwidth results in increase of noise which REDUCES the value of SNR, affecting the performance negatively. Filtering of antenna channels according to subscriber signals can give better performance.

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