Tunable distributed oscillator

An integrated circuit transceiver device comprising:

• a plurality of functional circuits of the integrated circuit transceiver device, each functional circuit being disposed at a different spatial location of the integrated circuit transceiver device;
• and
• clock circuitry for distributing synchronous, in-phase, phase-locked clock signals to all functional circuits in the plurality of functional circuits, the clock circuitry comprising:
• a frequency-controllable distributed oscillator configured to generate a clock signal, the distributed oscillator including:
• at least one coupled pair of transmission line oscillators, each transmission line oscillator having a respective oscillator core, and at least one respective transmission line segment;
• at least one impedance element coupling the at least one respective transmission line segment of a first transmission line oscillator in the pair of transmission line oscillators to the at least one respective transmission line segment of a second transmission line oscillator in the pair of transmission line oscillators, impedance of the at least one impedance element being different from impedance of each of the at least one respective transmission line segment to cause reflection at the at least one impedance element, the at least one impedance element comprising a plurality of independently controllable switches, each respective independently controllable switch being configured to selectably establish at its respective location, when closed, a null in a standing wave of its respective transmission line oscillator to control an oscillation mode of its respective transmission line oscillator;
• and
• at least one tap corresponding to each respective one of the transmission line oscillators, each tap being configured to output synchronous, in-phase, phase-locked clock signals for the functional circuits at points along the distributed oscillator.