vastuvõtutundlikkus

Vastuvõtutundlikkus refers to the sensitivity of a receiver in telecommunications to incoming signals. It quantifies how weak a signal can be for the receiver to still successfully detect and process it. A higher vastuvõtutundlikkus indicates that the receiver can pick up fainter signals, which is crucial for extending communication range, improving reliability in noisy environments, or enabling communication with low-power transmitters.

This characteristic is often expressed in decibels relative to one milliwatt (dBm), where a more negative number signifies a higher sensitivity (e.g., -120 dBm is more sensitive than -100 dBm). Factors influencing vastuvõtutundlikkus include the receiver's noise figure, bandwidth, and the specific detection algorithms employed. A lower noise figure means the receiver adds less of its own noise to the incoming signal, making it easier to discern the signal from the background. Similarly, a narrower bandwidth can help reject interference from adjacent frequencies, effectively increasing the signal-to-noise ratio.

Vastuvõtutundlikkus is a critical parameter in the design and selection of radio receivers, wireless communication systems, and sensor networks. It directly impacts the performance and usability of devices operating in various frequency bands and application scenarios, from mobile phones to satellite receivers. Engineers strive to optimize vastuvõtutundlikkus to achieve the desired communication performance while considering constraints such as cost, power consumption, and size.