Transmitter including selectively enabled clock source based on digital transmit data

A method, comprising:

• generating a local oscillator (LO) clock signal;
• generating a radio frequency (RF) signal based on a data signal and the LO clock signal;
• detecting a stream of idle data in the data signal;
• and
• gating the LO clock signal to cease generating at least a portion of the RF signal in response to detecting the stream of idle data.

An apparatus, comprising:

• a modem configured to generate a physical layer (“phy”) data signal;
• an ultra-wideband (UWB) pulse generator configured to generate a UWB signal based on the phy data signal and a first clock signal;
• a radio frequency digital-to-analog converter (RF DAC) configured to generate a radio frequency (RF) signal based on the UWB signal and a second clock signal;
• and
• a gating circuit configured to gate the second clock signal from being applied to the RF DAC in response to a pattern in the phy data signal.

An apparatus, comprising:

• a modem configured to generate a physical layer (“phy”) data signal;
• an ultra-wideband (UWB) pulse generator configured to generate a UWB signal based on the phy data signal and a first clock signal, wherein the UWB signal comprises a set of significant bit groups;
• a set of radio frequency digital-to-analog converters (RF DACs) configured to generate a set of radio frequency (RF) signals based on the set of significant bit groups of the UWB signal and a second clock signal, respectively;
• an idle data detector configured to generate a set of control signals based on detecting a set of idle data stream in the set of significant bit groups, respectively;
• and
• a gating circuit configured to pass or gate the second clock signal to or from the set of RF DACs based on the set of control signals, respectively.