| 摘要 |
The transmitter includes a coder which passes in-phase and quadrature signals to a limiting circuit (T). The signals are passed through an interpolation circuit (M1,M2) which reduces the coding bandwidth and reduces output amplifier distortion. The signals then pass through anti-aliasing filters (Fb1,Fb2), D/A convertors and filters and are applied to a QPSK modulator. The signal is then applied to a pre-amplifier (PO) and two further amplifiers (P1,P2) which are connected in parallel. The signal is transmitted after summing and filtering. |
