Abstract: A dual epilator for removal of unwanted hair. Line power is reduced and rectified in a power supply which energizes a timer circuit and an RF amplifier. A timed DC pulse emitted from the timer circuit under an operator's regulation feeds a normally unenergized crystal controlled oscillator whose output is boosted in the RF amplifier. The RF power can be selectively utilized by a needle or tweezers. A tuned antenna provides an efficient return for the RF power.

Abstract: An electromagnetic wave radiation system includes an array of stationary antenna elements, a multiplicity of phase modulator units coupled to the antenna elements, a source of high frequency energy supplying energy to the antenna array, and modulator driving means activating the same to cause phase displacement and rotation of the beam transmitted by the antenna elements. The antenna may be a discone assembly or an assembly of antenna elements in a circular configuration, and the modulator units may be passive ferrite members located in the aperture of the antenna. The modulator driving units may comprise electromagnets located below the ground plane of the antenna and alternatively or selectively energized by in-phase and phase shifted sine wave voltages.