JPS57142025A - Sweep signal generator - Google Patents
Sweep signal generatorInfo
- Publication number
- JPS57142025A JPS57142025A JP56026741A JP2674181A JPS57142025A JP S57142025 A JPS57142025 A JP S57142025A JP 56026741 A JP56026741 A JP 56026741A JP 2674181 A JP2674181 A JP 2674181A JP S57142025 A JPS57142025 A JP S57142025A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- mixer
- signal
- trigger pulse
- pass filter
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B23/00—Generation of oscillations periodically swept over a predetermined frequency range
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To attenuate a power level of a frequency band desired to be removed, by sweeping the band with a waveform signal having steep rise and fall instantaneously. CONSTITUTION:A trigger pulse generator 8 consists of a mixer 8a, a reference oscillator 8b and a low-pass filter 8c, and a signal in 125-155MHz intermediate frequencies outputted from a frequency mixer 5 is applied to one input of the mixer 8a, and a reference frequency corresponding to a frequency f0 (e.g., 138MHz) among this intermediate frequency band signal is applied to another input for mixing. This mixed output is applied to the low-pass filter 8c having 500kHz cutoff frequency to generate a trigger pulse at a time location before the generated time location of the frequency f0 by 0.5mus. After this trigger pulse is converted into a rectangular wave signal, 1mus in width having steep rise and fall at a wave signal generator, the pulse is applied to a local oscillator 4 to instantaneously change the oscillated frequency.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56026741A JPS57142025A (en) | 1981-02-27 | 1981-02-27 | Sweep signal generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56026741A JPS57142025A (en) | 1981-02-27 | 1981-02-27 | Sweep signal generator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57142025A true JPS57142025A (en) | 1982-09-02 |
JPS6351563B2 JPS6351563B2 (en) | 1988-10-14 |
Family
ID=12201719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56026741A Granted JPS57142025A (en) | 1981-02-27 | 1981-02-27 | Sweep signal generator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57142025A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61123206A (en) * | 1984-11-19 | 1986-06-11 | Advantest Corp | Frequency sweep signal generator |
JP2007205142A (en) * | 2006-02-06 | 2007-08-16 | Shunsuke Irie | Built-up fence conduit equipped with single plate sidewall panel |
-
1981
- 1981-02-27 JP JP56026741A patent/JPS57142025A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61123206A (en) * | 1984-11-19 | 1986-06-11 | Advantest Corp | Frequency sweep signal generator |
JP2007205142A (en) * | 2006-02-06 | 2007-08-16 | Shunsuke Irie | Built-up fence conduit equipped with single plate sidewall panel |
Also Published As
Publication number | Publication date |
---|---|
JPS6351563B2 (en) | 1988-10-14 |
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