Abstract: A latching electromagnetic RF switch is provided with an armature having a permanent magnet mounted thereon. An electromagnetic coil surrounding the armature has a ferromagnetic member mounted opposite the armature. A spring holds the permanent magnet away from the ferromagnetic member, latching the switch in a first position. In a second position, the permanent magnet attracts the ferromagnetic member and holds the armature against the force of the spring latching the switch.

Abstract: An electromagnetic relay, such as an electromechanical RF switch, which is operated by an electromagnetic coil, is provided with an indicating circuit which responds to the position of the electromagnetic armature as well as the application of driving current to the coil. A magnetically activated reed switch is mounted adjacent to the electromagnetic coil at a distance selected so that the magnetic field of the coil will operate the reed switch when current is applied to the coil and the armature is driven into a position closing a magnetic circle.

Abstract: A double pole, double throw electromechanical RF switch is configured to enable the same switch mechanical arrangement to accommodate various applications, including make-before-break or break-before-make switch operations and latching or fail-safe switching. By simple interchange of the two armatures provided, the operation of the same mechanical switch can be changed.

Abstract: The present invention relates to a dipole antenna for monitoring electromagnetic radiation fields over an extended frequency range with essentially flat characteristics. The dipole antenna includes two arms, each of which is divided into two or more conducting elements. In one arm, a relatively low resistance is connected in series between the segments, and in the other arm, a relatively large resistance is connected in series between the segments.

Abstract: A unique diode sensor adapted for responding with pre-established sensitivity over a range of relatively low frequencies. A diode is connected to a dipole antenna having both conductive and resistive portions. Lumped impedances are connected in parallel with the diode and the values of these impedances are selected in coordination with the characteristics of the diode and antenna to control the sensitivity of the sensor as a function of the frequency of the illuminating energy.

Abstract: An antenna comprising orthogonal arrays of resistive thermocouple dipoles interconnected by transversely extending conductive elements of discrete length. The components are designed to create an additional response by a traveling wave effect on the dipoles along the Poynting vector to offset the fall-off in dipole sensitivity experienced as frequency rises.

Abstract: Microwave dielectric resonator apparatus which, for example, may be a microwave oscillator frequency stabilized by a dielectric resonator or may be a microwave filter whose critical frequency is determined by a dielectric resonator, has the dielectric resonator environmentally protected in a hermetic chamber. As the hermetic integrity of the chamber would be destroyed by having a tuning slug therein at the end of a screw threaded into a tapped hole through a chamber wall for rotation by a screwdriver outside the chamber, the tuning slug is instead located within a non-hermetic chamber at the end of a screw threaded into a tapped hole through a wall of the non-hermetic chamber serving also as an outer wall of a housing enclosing both chambers. The chambers have an interface which is transparent to microwave fields and proximate the dielectric resonator and tuning slug.

Abstract: An electromagnetic field detector adapted to display potential hazard to humans and other animals arising from illuminating electromagnetic energy over the frequency range determined to be hazardous by the American National Standards Institute; the detector being designed with various sensing means to create a sensitivity vs. frequency response that is the inverse of the A.N.S.I. protection guides.

Abstract: A radiation detector utilizing thin film thermocouples serially connected in an array and substantially disposed within a plane, said thermocouples being selectively mounted for non-perturbing introduction into the near-field region of an electric field.This application is a continuation of copending application Ser. No. 678,901 filed Apr. 21, 1976, now abandoned, which prior application was a continuation of previously copending application Ser. No. 423,754 filed Dec. 11, 1973, now abandoned, which latter application was a divisional of copending application Ser. No. 200,536, filed Nov. 19, 1971, now U.S. Pat. No. 3,794,914, which latter application was a continuation-in-part of copending application Ser. No. 848,620 filed Aug. 8, 1969, now U.S. Pat. No. 3,641,439.

Abstract: This portable microwave radiation monitor utilizes an antenna formed in a dual Archimedean spiral. The power density of the electric field is indicated on a meter coupled to diode means connected across the inner terminals of the antenna by inductance means selected to resonate with the variable capacitance of the diode, substantially at the frequency of the field being monitored.

Abstract: This portable microwave radiation monitor utilizes an antenna formed in a dual Archimedean spiral. The ellipse ratio of the spiral is minimized by selective placement of resistive means over a portion of the antenna and the power density of the electric field is indicated on a meter connected via diode means to the inner terminals of the antenna.

Abstract: A temperature probe that does not perturb incident electromagnetic fields which includes a high resistance thermocouple mounted within a rigid needle structure. Special leads connect the thermocouple to appropriate metering means to register the temperature sensed by the thermocouple.

Abstract: A temperature probe that does not perturb incident electromagnetic fields which includes a high resistance thermocouple mounted within a rigid needle structure. Special leads connect the thermocouple to appropriate metering means to register the temperature sensed by the thermocouple.

Abstract: This is a probe for detecting the magnetic field component of low frequency electro-magnetic fields. Loop antennas utilizing thermocouples are tuned to resonate at a frequency below the lower frequency of the range being detected and a plurality of these loop antennas are arranged orthogonally to one another in order to obtain isotropic performance.