Accession Number : AD0805770

Title :   ELECTROMAGNETIC GENERATION TECHNIQUES.

Descriptive Note : Final rept. 1 Jun 65-31 Aug 66,

Corporate Author : RCA LABS PRINCETON NJ

Personal Author(s) : Swartz, George A. ; Robinson, Bruce B.

Report Date : DEC 1966

Pagination or Media Count : 60

Abstract : Coherent microwave power at K-band frequencies was generated by three types of InSb structures: (1) a rod with the plane of a p-n junction parallel to the main current flow; (2) a p-type rod with electron injecting contacts and a remelted surface parallel to the main current flow; and (3) a p-type rod with electron injecting contacts. In each case, electric and magnetic fields are applied to the structures at an angle, Theta, to each other, at an ambient temperature of 77 K. The required electric fields are between 100 and 400 V/cm; the required magnetic fields are greater than 400G; and the required angles are generally between 25 and 90 degrees. The emission frequency decreases with time during the electric field pulse and increases with decreasing electric field. An instantaneous power output of 10 microns is generated with an instantaneous input power of 2.2 W. The linewidth of the K-band emission is less than 20 MHz. A theory, which considers two-stream interaction in a transverse magnetic field, is formulated and predicts microwave generation at the observed frequencies. A second theory, which considers the interaction of a hole stream and an adjacent electron stream in a longitudinal magnetic field, is formulated and predicts micro-wave generation in InSB, provided the ratio of hole temperature to electron temperature is much less than one. (Author)

Descriptors :   *SOLID STATE PHYSICS), *SEMICONDUCTOR DEVICES), (*MICROWAVE OSCILLATORS, (*RADIOFREQUENCY GENERATORS, MICROWAVE FREQUENCY), (*INDIUM ANTIMONIDES, K BAND, COHERENT RADIATION, SEMICONDUCTOR DIODES, ELECTRON BEAMS, MAGNETIC FIELDS, ELECTRIC FIELDS, INTERACTIONS, ELECTROMAGNETISM.

Subject Categories : Electrical and Electronic Equipment
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE