VARIABLE PHASE SHIFTER

PROBLEM TO BE SOLVED: To provide a variable phase shifter having a large amount of phase shift in output voltage and a high stability during phase shift. SOLUTION: At a variable phase shifter 10, a variable reactance circuit made of capacitors 30, 36, variable capacity diodes 32, 38, and inductors 3...

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Bibliographische Detailangaben
Hauptverfasser:	MIZUMA ATSUO, MIYAZAWA KOJI, HIRAI TAKAMI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BASIC ELECTRONIC CIRCUITRY ELECTRICITY IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS RESONATORS RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE WAVEGUIDES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a variable phase shifter having a large amount of phase shift in output voltage and a high stability during phase shift. SOLUTION: At a variable phase shifter 10, a variable reactance circuit made of capacitors 30, 36, variable capacity diodes 32, 38, and inductors 34, 40 is connected electrically among a 0° terminal 14 and a 90° terminal 16 of a 90° hybrid coupler 20 and earth (GND). When a high frequency input signal Si is supplied to an input terminal 12, a high frequency output signal St is outputted from an output terminal 18. On this occasion, a control voltage Vc is impressed from a voltage control terminal 52 via the coils 46, 48 to variable capacity diodes 32, 38 to change the phase θ of the high frequency output signal St. COPYRIGHT: (C)2006,JPO&NCIPI