pi -section digital phase shifter apparatus

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...

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Bibliographic Details
Main Author YARMAN; BINBOGA S
Format Patent
LanguageEnglish
Published 05.08.1986
Edition4
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
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Summary: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.
Bibliography:Application Number: US19850767455