Receiver System Parameters
A receiver picks up the modulated carrier signal from its antenna. The carrier signal is downconverted, and the modulating signal (information) is recovered. Figure 5.1 shows a diagram of typical radio receivers using a double-conversion scheme. The receiver consists of a monopole antenna, an RF ampliﬁer, a synthesizer for LO signals, an audio ampliﬁer, and various mixers, IF ampliﬁers, and ﬁlters.