Discrete digital transmitter

摘要

A transmitter includes a conversion module, a sample and hold module, and a discrete time bandpass filter module. The conversion module is operable to convert an outbound baseband signal into outbound frequency domain pulse signal. The sample and hold module is operable to sample and hold the outbound frequency domain pulse signal to produce a frequency domain sample pulse train, wherein the sample and hold module is clocked at a rate corresponding to a frequency component of an outbound wireless signal. The discrete time bandpass filter module is operable to bandpass filter the frequency domain sample pulse train to produce the outbound wireless signal.

主权项

1. A transmitter comprising:
a conversion module configured to convert an outbound baseband signal into a baseband analog signal in frequency domain, the conversion module comprising a digital to analog conversion module configured to convert the outbound baseband signal into the baseband analog signal; a sample and hold module configured to sample and hold the baseband analog signal to produce a plurality of pulses spaced in frequency by a sampling frequency, wherein the pulses include a pulse at baseband, which corresponds to the baseband analog signal and include a pulse at RF; and a discrete time bandpass filter module configured to bandpass filter a filter response corresponding to a bandpass filter centered at the RF and attenuate the pulses of other frequencies of the plurality of pulses to produce an outbound RF signal.