Accession Number : AD0676817

Title :   BORON-NITRIDE HIGH-POWER DUPLEXING DEVICE.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : DeCamp,Edward E. , Jr. ; True,Robert M. ; Edwards,Edward V.

Report Date : AUG 1968

Pagination or Media Count : 20

Abstract : The results of an experimental program to improve the power-handling capacity of duplexer devices through the use of an improved dielectric material are described. A dielectric container made of chemical-vapor-deposited (CVD) isotropic boron-nitride (BN) is substituted for the commonly used quartz envelope. A cylindrical pre-TR that failed because of high-temperature effects at a power level of 38 MW peak, 38 kW average, using a quartz envelope, operated satisfactorily at a power level of 65 MW peak, 65 kW average, with an isotropic CVD BN cylinder. The improvements in performance that can be achieved through the use of this material are significant in high-power duplexer applications. (Author)

Descriptors :   (*RADAR DUPLEXERS, *DIELECTRICS), BORON COMPOUNDS, NITRIDES, RADIOFREQUENCY POWER, TRANSMIT RECEIVE TUBES, VAPOR PLATING, MICROWAVE FREQUENCY, QUARTZ

Subject Categories : Electrical and Electronic Equipment
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE