FR2227683A1 - - Google Patents
Info
- Publication number
- FR2227683A1 FR2227683A1 FR7414625A FR7414625A FR2227683A1 FR 2227683 A1 FR2227683 A1 FR 2227683A1 FR 7414625 A FR7414625 A FR 7414625A FR 7414625 A FR7414625 A FR 7414625A FR 2227683 A1 FR2227683 A1 FR 2227683A1
- Authority
- FR
- France
- 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
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/10—Angle modulation by means of variable impedance
- H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
- H03C3/22—Angle modulation by means of variable impedance by means of a variable reactive element the element being a semiconductor diode, e.g. varicap diode
- H03C3/222—Angle modulation by means of variable impedance by means of a variable reactive element the element being a semiconductor diode, e.g. varicap diode using bipolar transistors
-
- 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
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/006—Functional aspects of oscillators
- H03B2200/007—Generation of oscillations based on harmonic frequencies, e.g. overtone oscillators
-
- 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
- H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
- H03B5/362—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device the amplifier being a single transistor
-
- 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
- H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
- H03B5/366—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device and comprising means for varying the frequency by a variable voltage or current
- H03B5/368—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device and comprising means for varying the frequency by a variable voltage or current the means being voltage variable capacitance diodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
- H03C2200/0037—Functional aspects of modulators
- H03C2200/0079—Measures to linearise modulation or reduce distortion of modulation characteristics
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP48047856A JPS49135558A (fr) | 1973-04-27 | 1973-04-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2227683A1 true FR2227683A1 (fr) | 1974-11-22 |
FR2227683B1 FR2227683B1 (fr) | 1978-06-02 |
Family
ID=12786999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7414625A Expired FR2227683B1 (fr) | 1973-04-27 | 1974-04-26 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS49135558A (fr) |
CA (1) | CA996206A (fr) |
DE (1) | DE2420420A1 (fr) |
FR (1) | FR2227683B1 (fr) |
GB (1) | GB1472884A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2501419A1 (fr) * | 1981-03-05 | 1982-09-10 | Italtel Spa | Circuit pour signaux de tres haute frequence comprenant au moins une microbande |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2904045C2 (de) * | 1979-02-02 | 1982-04-15 | Siemens AG, 1000 Berlin und 8000 München | Quarzoszillator mit gemischt induktiver und kapazitiver Schwingfrequenzsteuerung |
JPS57166704A (en) * | 1981-04-06 | 1982-10-14 | Nec Corp | Voltage-controlled oscillator |
JPH06188729A (ja) * | 1992-12-16 | 1994-07-08 | Murata Mfg Co Ltd | ノイズ除去回路および電圧制御形発振回路 |
JP2007049254A (ja) * | 2005-08-08 | 2007-02-22 | Nippon Dempa Kogyo Co Ltd | 水晶発振器 |
GB0724475D0 (en) * | 2007-12-14 | 2008-01-30 | Acp Advanced Circuit Pursuit A | Variable inductor |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2925561A (en) * | 1955-07-01 | 1960-02-16 | Motorola Inc | Crystal oscillator system |
US3382463A (en) * | 1967-02-20 | 1968-05-07 | Damon Eng Inc | Variable frequency voltage controlled crystal oscillator |
-
1973
- 1973-04-27 JP JP48047856A patent/JPS49135558A/ja active Pending
-
1974
- 1974-04-25 GB GB1821774A patent/GB1472884A/en not_active Expired
- 1974-04-26 FR FR7414625A patent/FR2227683B1/fr not_active Expired
- 1974-04-26 DE DE2420420A patent/DE2420420A1/de active Pending
- 1974-04-26 CA CA198,241A patent/CA996206A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2501419A1 (fr) * | 1981-03-05 | 1982-09-10 | Italtel Spa | Circuit pour signaux de tres haute frequence comprenant au moins une microbande |
Also Published As
Publication number | Publication date |
---|---|
JPS49135558A (fr) | 1974-12-27 |
FR2227683B1 (fr) | 1978-06-02 |
DE2420420A1 (de) | 1974-11-07 |
CA996206A (en) | 1976-08-31 |
GB1472884A (en) | 1977-05-11 |