Accession Number : ADD012495

Title :   Pi-Section Digital Phase Shifter Apparatus.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Yarman,Binboga S

Report Date : 05 Aug 1986

Pagination or Media Count : 5

Abstract : An extra high frequency pi-section digital phase shifter apparatus having a diode connected between two identical parallel shunt circuits. The parallel shunt circuits connect to the series inductor/diode circuit at both the input and output and each parallel shunt circuit has inductor connected in parallel with a capacitor and a diode to provide balanced insertion loss at each diode switching state. When the diodes of the circuit are in the forward-biased state they act as closed short circuit switches. When the diodes are reverse-biased, the inductance in the shunt circuit resonates with the diode capacitance to provide a short circuit path to the RF signal at the center frequency of the RF signal at the desired phase.

Descriptors :   *PATENTS, *INSERTION LOSS, *CIRCUITS, *ELECTRONIC SWITCHES, CAPACITANCE, DIODES, PARALLEL ORIENTATION, SHUNTS, CIRCUITS, RADIOFREQUENCY, SIGNALS, FREQUENCY, SWITCHING, INDUCTANCE, SHORT CIRCUITS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE