Receiver basics and how big is big?
It is fundamental that to detect a signal a receiver is required. A receiver includes an antenna (telescope) of some sort to collect the signal and feed it to a detector which, typically, converts electromagnetic waves into an electrical signal in order to trigger an electronic apparatus by exceeding the random noise of the detection system. The receiver is therefore just one part of a communication link, and we must understand all the key elements of a link before we can delve into aspects over which we have significant control, such as the size of the receiver.
KeywordsRadio Frequency Direct Detection Local Oscillator Antenna Size Collection Area
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