4.1 General Considerations Limited bandwidth Shannon's theorem states that the achievable data rate of a communication channel is equal to B log2(1+SNR), where B denotes the bandwidth and SNR the signal-to-noise ratio. Challenge for RF engineer TX:Low spectrum emission RX:Strong Rejection on other channel Cascaded Stages个一一Nonlinearity/Noise个 )))))4.1 General Considerations Limited bandwidth ◦ Shannon’s theorem states that the achievable data rate of a communication channel is equal to B log2 (1 + SNR), ◦ where B denotes the bandwidth and SNR the signal-to-noise ratio. ◦ Challenge for RF engineer ◦ TX: Low spectrum emission ◦ RX: Strong Rejection on other channel Cascaded Stages↑ ——Nonlinearity/Noise ↑