Accession Number : AD0430402


Title :   FREQUENCY CONVERTER UNITS FOR L-BAND, S-BAND, C-BAND AND X-BAND.


Descriptive Note : Interim development rept. no. 7, 1-31 Jan 64.


Corporate Author : ELECTROMAGNETIC TECHNOLOGY CORP PALO ALTO CALIF


Report Date : 14 Feb 1964


Pagination or Media Count : 30


Abstract : Effort was continued on the development of the frequency converter units. The high-pass filter using a circular bore and tapered input and outoutput sections was completed and tested. A lowpass filter for use in the L.O.hannel of the X-band converter was designed, built, and tested. A developmental frequency converter unit including a 3db broadwall directional coupler, mounting for two reversed pairs of 1N53 crystals and a coaxial output jack has been designed and is being fabricated. An experimental unit has been used for both up and down frequency conversion. The conversion losses observed in the two directions are alike to one-half db and are in good agreement with the value calculated from the direct current rectified at various levels of K band carrier. Extensive measurements were made of the IF impedance of 1N26 and 1N53 crystals in a simple holder. The internal capacitance of 1N26 crystals is high enough to make IF matching very difficult. The capacitance of 1N53 crystals is substantially lower. Preliminary tests indicate that we will be able to obtain matches consistent with the specified value VSWR = 3. (Author)


Descriptors :   MICROWAVE FREQUENCY , FREQUENCY CONVERTERS , L BAND , S BAND , C BAND , X BAND , FREQUENCY MULTIPLIERS , FREQUENCY DIVIDERS , HIGH PASS FILTERS , K BAND , CRYSTAL MIXERS , SEMICONDUCTOR DIODES


Distribution Statement : APPROVED FOR PUBLIC RELEASE