A USB transmitter (upper sideband transmitter) is a form
of SSB transmitter (single sideband transmitter) that transmits only on
the upper sideband. A USB transmitter usually operates by
generating a DSB (double sideband) signal and using a filter
to remove the lower sideband. The design of this filter
often causes a USB transmitter to perform two separate
frequency-shifting modulation operations.
Other topics in our resources on Transmitters and Receivers related to USB Transmitter include: