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In this paper, an ultra-low power and configurable IR-UWB transmitter is presented. The center frequency can be tuned from 500 MHz to 4.1 GHz. The configurability is achieved by the digitally programmable shunt capacitor delay elements. Shift registers are used to configure the delay lines and to minimize the number of pins used. The transmitter is capable of achieving 600 MHz pulse repetition frequency...
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