| 摘要 |
<p>A single sideband wave generation system is for a transmitter. It has two oscillators whose outputs are mixed to produce an IF wave from which a carrier wave is developed. This carrier wave is modulated by an AF signal. It is filtered to produce a single sideband audio signal, which is then mixed selectively with the outputs of the two oscillators to develop upper and lower sidebands of a transmission frequency. The frequency difference between the two oscillators is 2n times the carrier wave frequency, with n flip flop units or their equivalent being employed to reduce the difference frequency down to the carrier frequency.</p> |
