JPS6468107A - Phase detection circuit - Google Patents
Phase detection circuitInfo
- 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
Links
Landscapes
- 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.
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) |
-
1987
- 1987-09-09 JP JP22554587A patent/JPS6468107A/en active Pending
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