Abstract:
An avalanche diode which will oscillate to generate microwave powers in the frequency range of 2 to 16 gigahertz with efficiencies of up to at least 30 percent. The diode will also function as a microwave amplifier in the same frequency range. The diode includes a body of semiconductor material having two spaced apart regions and a third region between and contiguous to both of the other regions. The outer two regions are of low resistivity and of opposite conductivity type. The third intermediate region is of a conductivity type the same as one of the outer regions and forms an abrupt or hyperabrupt PN junction with the other of the outer regions. The third region is of a thickness of between 0.5 and 3 microns and a resistivity of between 0.5 and 10 ohm-cm.
Abstract:
A high power semiconductor device comprising a housing having an enclosed chamber therein and a plurality of semiconductor elements mounted in the chamber and electrically connected in series. The semiconductor elements are individually mounted in spaced relation on a plate of an electrically insulating material which is a good conductor of heat and are electrically connected between a metal body secured to one side of the plate and a metal cover secured to the other side of the plate.
Abstract:
A high efficiency mode avalanche diode oscillator is disclosed. The avalanche diode and a tuning capacitor are connected in parallel at a high microwave voltage point at one end of a resonant transmission line section electrically one-eighth wavelength long at the operating frequency of the oscillator, so as to match the complex impedance of the diode to a load impedance, and to provide the high efficiency mode of operation.
Abstract:
A semiconductor thyristor device having a cathode region and an anode region comprises ballast means adjacent thereto. The device further comprises first and second electrode means which are positioned such that only the cathode region and the anode region respectively are contacted thereby. The present structure is compatible with conventional device structures.