1396 THE BELL SYSTEM TECHNICAL JOURNAL, NOVEMBER 1956 



2 



Fig. 12 — Balanced converter with wafer-type rectifiers. 



meter-wave reflex klystron* as the beating oscillator and a 60-mc 

 intermediate frequency amplifier with a 5-db noise figure. 



REVERSED POLARITY WAFER UNIT 



When using crystal rectifiers in a balanced converter arrangement, 

 there is a distinct advantage, circuit-wise, in using two units of opposite 

 polarity. For this reason, a reversed-polarity wafer type rectifier has 

 also been developed. This was done by interchanging the silicon and the 



* E. D. Reed, A Tunable, Low-Voltage Reflex Klystron for Operation in the 

 50 to 60 kmc Band, B. S. T. J., 34, pp. 563-599, May, 1955. 



