SE334396B - - Google Patents
Info
- Publication number
- SE334396B SE334396B SE1152567A SE1152567A SE334396B SE 334396 B SE334396 B SE 334396B SE 1152567 A SE1152567 A SE 1152567A SE 1152567 A SE1152567 A SE 1152567A SE 334396 B SE334396 B SE 334396B
- Authority
- SE
- Sweden
- Prior art keywords
- resonators
- resonator
- coupling
- crystal
- oscillator
- Prior art date
Links
- 239000013078 crystal Substances 0.000 abstract 4
- 230000008878 coupling Effects 0.000 abstract 3
- 238000010168 coupling process Methods 0.000 abstract 3
- 238000005859 coupling reaction Methods 0.000 abstract 3
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
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/323—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator the resonator having more than two terminals
-
- 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
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/326—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator the resonator being an acoustic wave device, e.g. SAW or BAW device
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Abstract
1,192,560. Crystal oscillator circuits. WESTERN ELECTRIC CO. Inc. 10 Aug., 1967 [17 Aug., 1966], No. 36781/67. Heading H3T. In an oscillator having a crystal tuning means CR comprising a crystal body CW coupling two resonators, one resonator PR is connected in the feedback path of an amplifier, e.g. transistor TR, the other resonator SR is adapted to supply output signals to a load network LN and the coupling is such that depending on whether the other resonator SR is terminated by a low or high impedance the resonators pass energy over substantially only a first or a second pass-band respectively. The trimmers CT 1 and CT 2 tune the primary and secondary resonators PR and SR to the same operating frequency. The coupling between the resonators PR and SR may be critical or less than critical and is varied by adjusting the mass loading of the electrodes E1-E4 or the spacing between electrodes. Frequency drifts of the oscillator tuning relative to the filter tuning due to temperature changes are avoided by forming the resonators PR and SR on the same crystal body.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US57294466A | 1966-08-17 | 1966-08-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
SE334396B true SE334396B (en) | 1971-04-26 |
Family
ID=24290014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE1152567A SE334396B (en) | 1966-08-17 | 1967-08-16 |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE702569A (en) |
ES (1) | ES344476A1 (en) |
GB (1) | GB1192560A (en) |
NL (1) | NL6711334A (en) |
SE (1) | SE334396B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5789990A (en) * | 1996-02-14 | 1998-08-04 | Rf Monolithics, Inc. | Feedback oscillator circuit using a saw resonator filter |
-
1967
- 1967-08-10 GB GB3678167A patent/GB1192560A/en not_active Expired
- 1967-08-11 BE BE702569D patent/BE702569A/xx unknown
- 1967-08-16 SE SE1152567A patent/SE334396B/xx unknown
- 1967-08-17 ES ES344476A patent/ES344476A1/en not_active Expired
- 1967-08-17 NL NL6711334A patent/NL6711334A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
NL6711334A (en) | 1968-02-19 |
GB1192560A (en) | 1970-05-20 |
BE702569A (en) | 1968-01-15 |
ES344476A1 (en) | 1968-10-16 |
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