Abstract: According to one aspect of the inventive concept there is provided a transmitter-receiver system comprising: a transmitter arranged to transmit a wavelet; a receiver arranged to receive a wavelet; a wavelet generator arranged to generate a reference wavelet; and timing circuitry arranged to receive a reference clock signal, output a first trigger signal for triggering transmission of a wavelet and output a second trigger signal for triggering generation of a reference wavelet. The timing circuitry further comprises a delay line including at least one delay element and being arranged to receive a signal at an input of the delay line and transmit a delayed signal at an output of the delay line, wherein a state of each delay element of at least a subset of said at least one delay elements is switchable between at least a first state and a second state. A delay element in said first state, i.e. switched to its first state, presents a first propagation delay. A delay element in said second state, i.e.

Abstract: According to one aspect of the inventive concept there is provided a transmitter-receiver system comprising: a transmitter arranged to transmit a wavelet; a receiver arranged to receive a wavelet; a wavelet generator arranged to generate a reference wavelet; and timing circuitry arranged to receive a reference clock signal, output a first trigger signal for triggering transmission of a wavelet and output a second trigger signal for triggering generation of a reference wavelet. The timing circuitry further comprises a delay line including at least one delay element and being arranged to receive a signal at an input of the delay line and transmit a delayed signal at an output of the delay line, wherein a state of each delay element of at least a subset of said at least one delay elements is switchable between at least a first state and a second state. A delay element in said first state, i.e. switched to its first state, presents a first propagation delay. A delay element in said second state, i.e.

Abstract: A transceiver comprising a tank circuit, a variable differential conductance, VDC, coupled to the tank circuit, and a variable resistance coupled to the VDC is disclosed. The variable resistance is arranged to bias the VDC into a region of positive differential conductance during a first state of operation of the transceiver, and bias the VDC into a region of negative differential conductance during a second state of operation of the transceiver.

Abstract: A transceiver comprising a tank circuit, a variable differential conductance, VDC, coupled to the tank circuit, and a variable resistance coupled to the VDC is disclosed. The variable resistance is arranged to bias the VDC into a region of positive differential conductance during a first state of operation of the transceiver, and bias the VDC into a region of negative differential conductance during a second state of operation of the transceiver.