JPS6468107A - Phase detection circuit - Google Patents

Phase detection circuit

Info

Publication number
JPS6468107A
JPS6468107A JP22554587A JP22554587A JPS6468107A JP S6468107 A JPS6468107 A JP S6468107A JP 22554587 A JP22554587 A JP 22554587A JP 22554587 A JP22554587 A JP 22554587A JP S6468107 A JPS6468107 A JP S6468107A
Authority
JP
Japan
Prior art keywords
phase
signal
phase detection
coupler
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP22554587A
Other languages
Japanese (ja)
Inventor
Norio Muto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP22554587A priority Critical patent/JPS6468107A/en
Publication of JPS6468107A publication Critical patent/JPS6468107A/en
Pending legal-status Critical Current

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  • Measuring Phase Differences (AREA)

Abstract

PURPOSE:To obtain a phase detection circuit with high accuracy by acquiring I, Q components required for phase detection in time series through the phase shift of a reference signal by 0 deg. or 90 deg. in response to a phase control signal by means of one circuit only thereby eliminating the dispersion of the characteristics between circuits. CONSTITUTION:When a switch 10 is thrown to the position of a 1st input of a 90 deg., 3dB coupler 1, that is, a 0 deg. terminal, a reference signal divided equally into two by the coupler 1 causes a signal in phase to the input to the 0 deg. terminal being a 1st output, the signal is subjected to phase detection by a measured signal by a mixer 2 and a voltage corresponding to the phase difference of both the signals is outputted at an IF terminal. A 1st data is the I component of the phase to be obtained. In switching the transmission line of the reference signal given to the 90 deg., 3dB coupler 11 by the switch 10, a 2nd data being the Q component of the phase to be switched is obtained. The I, Q components obtained in time series are used to calculate a phase theta to be obtained.
JP22554587A 1987-09-09 1987-09-09 Phase detection circuit Pending JPS6468107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22554587A JPS6468107A (en) 1987-09-09 1987-09-09 Phase detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22554587A JPS6468107A (en) 1987-09-09 1987-09-09 Phase detection circuit

Publications (1)

Publication Number Publication Date
JPS6468107A true JPS6468107A (en) 1989-03-14

Family

ID=16830970

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22554587A Pending JPS6468107A (en) 1987-09-09 1987-09-09 Phase detection circuit

Country Status (1)

Country Link
JP (1) JPS6468107A (en)

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