Abstract: A method and apparatus adapted to be worn by a person for measuring radio frequency (RF) energy absorbed by a person's body in the frequency range of 10 KHz-42 MHz wherein the person's height is less than 1/4 of the free space wavelength of the radiation.

Abstract: An apparatus for charging a dosimeter which has a capacitor connected between first and second electrodes and a movable electrode in a chamber electrically connected to the first electrode. The movable electrode deflects varying amounts depending upon the charge present on said capacitor. The charger apparatus includes first and second charger electrodes couplable to the first and second dosimeter electrodes. To charge the dosimeter, it is urged downwardly into a charging socket on the charger apparatus. The second dosimeter electrode, which is the dosimeter housing, is electrically coupled to the second charger electrode through a conductive ring which is urged upwardly by a spring. As the dosimeter is urged into the socket, the ring moves downwardly, in contact with the second charger electrode.

Abstract: A method and apparatus adapted to be worn by the user for measuring radio frequency (RF) and microwave energy absorbed by a person's body in the frequency range in which substantial reflection by the body normally occurs. Included is a broad band body-mounted antenna responsive to the frequency range of interest, a detector, and integrator for providing a signal correlated to the energy absorbed during a predetermined interval by the body of the user on which the antenna is mounted. Also included is a radiation absorber located between the antenna and the user's body. The absorber provides at least 3db attenuation for incident energy in the frequency range of interest for minimizing energy reflected by the user's body toward the antenna. This, in turn, minimizes measurement errors due to location of the antenna in close proximity to the body which has substantial energy-reflecting properties at microwave frequencies of interest.

Abstract: A device is disclosed for charging and/or reading a capacitor associated with an electrometer incorporated in a radiation dosimeter for the purpose of initializing or "zeroing", the dosimeter at the commencement of a radiation measurement cycle or reading it at any time thereafter. The dosimeter electrometer has a movable electrode the position of which is indicative of the charge remaining on the dosimeter capacitor and in turn the amount of radiation incident on the dosimeter since it was zeroed. The charging device also includes means for discharging, immediately upon conclusion of the dosimeter capacitor charging operation, stray capacitance inherent in the dosimeter by reason of its mechanical construction. The charge on the stray capacitance, if not discharged at the conclusion of the dosimeter capacitor charging operation, leaks off during the measurement cycle, introducing measurement errors.