Abstract: A phase-locked loop double-point modulator may include a frequency divider having a ratio which can be changed by a first modulation signal, and an oscillator, a frequency of which can be changed by a second modulation signal correlated to the first modulation signal. A calibration circuit may be configured, in a calibration mode, to match the gains of the first and second modulation signals based on frequency measurements of the oscillator for two different calibration values of the second modulation signal. The phase-locked double-point modulator may also include an attenuator having a constant ratio greater than 1 and placed in the path of the second modulation signal, and a selector switch configured to be controlled by the calibration circuit to reduce the ratio of the attenuator in the calibration mode.

Abstract: A multiphase resonant pulse generator (74) has N groups of N?1 switches (44,46,48) which, when activated, form N paths from a power supply (Vdc) to ground or a reference voltage. Here N is a positive integer greater than 2. Each of the paths includes an inductance (38,40,42) and N?1 switches. The signal outputs (X1,X2,X3) from each of the N paths are cross coupled to switches belonging to the other N?1 paths to active or deactivate the groups of switches.

Abstract: An apparatus having a radio frequency resonator, which has a coil, a capacitor means and at least one switch means being associated with another capacitor means, a resistor means and a high voltage supply means, one end of the switch means being connected to a junction of the coil and the capacitor means where a radio frequency voltage is provided, another end of the switch means being connected to ground with said another capacitor means and to the high voltage power supply means with the resistor means.

Abstract: The resonant circuit has at least one resonant body of a semiconductor material anchored on the surface of a semiconductor substrate, at least one first electrode being arranged at said semiconductor material, and at least one second electrode. The first and second electrode are arranged lying opposite one another. When an AC-superimposed DC voltage is applied between the first and the second electrode, the resonant body is excited to mechanical oscillation by the DC voltage. In particular, the resonant circuit can be monoically integrated in electronic circuits.

Abstract: The high-power, short-pulse array is a self-contained radiating oscillator system which radiates a high peak-power pulse of radio frequency energy. The radiated pulses contain only a few cycles of RF and hence it is a short-pulse emitter. The device contains a chain or a series of loops which radiate in phase and each loop has a spark gap. The spark gaps are sequentially fired. The radiated waveform can be a single pulse of RF or a train of RF pulses. The device requires only a high voltage power supply for operation.