PL127641B1 - Quartz overtone oscillator with tunable frequency - Google Patents

Quartz overtone oscillator with tunable frequency

Info

Publication number
PL127641B1
PL127641B1 PL22200580A PL22200580A PL127641B1 PL 127641 B1 PL127641 B1 PL 127641B1 PL 22200580 A PL22200580 A PL 22200580A PL 22200580 A PL22200580 A PL 22200580A PL 127641 B1 PL127641 B1 PL 127641B1
Authority
PL
Poland
Prior art keywords
frequency
quartz
transistor
overtone
capacitance
Prior art date
Application number
PL22200580A
Other languages
Polish (pl)
Other versions
PL222005A1 (en
Inventor
Marek Jeziorowski
Adam Fiok
Original Assignee
Inst Tele I Radiotech
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 Inst Tele I Radiotech filed Critical Inst Tele I Radiotech
Priority to PL22200580A priority Critical patent/PL127641B1/en
Priority to FR8102780A priority patent/FR2475821A1/en
Priority to DE19813105134 priority patent/DE3105134A1/en
Priority to GB8104635A priority patent/GB2069788A/en
Publication of PL222005A1 publication Critical patent/PL222005A1/xx
Publication of PL127641B1 publication Critical patent/PL127641B1/en

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03BGENERATION 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
    • H03B5/00Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/36Generation 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
    • H03B5/362Generation 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

Description

Przedmiotem wynalazku jest kwarcowy owertonowy generator z przestrajanlem czestotliwosci* Znana konstrukcja owertonowego generatora kwarcowego z przestrajanlem czestotli¬ wosci /Patent USA nr k 001 *72k/ stanowi trójpunktowy uklad generacyjny Colpitts*a z wyjsciem kaskodowym. V ukladzie tym w celu uzyskania wymaganego zakresu przestrajania oraz selekcji pozadanego drgania owertonowego zastosowano dwa elementy indukcyjne po¬ laczone szeregowo i równolegle z rezonatorem kwarcowym* Do przestrajania czestotliwosci sluzy dioda pojemnosciowa polaczona szeregowo z trzecim elementem indukcyjnym. Czwarty element indukcyjny wlaczony pomiedzy diode pojemnosciowa a emiter tranzystora sluzy do eliminacji niepozadanych drgan w ukladzie* Inna znana konstrukcja generatora z przestrajanlem czestotliwosci /patent USA nr 3 916 3kk/ pracuje w trójtranzystorowym ukladzie Butler*a* Dwójnik zlozony z równo¬ legle polaozonych rezonatora kwarcowego i indukcyjnosci wlaczony jest miedzy emitery tranzystorów stanowiacych wzmacniacz rezonansowy* Obciazenie pierwszego tranzystora we wzmacniaczu stanowi równolegly obwód rezonansowy zlozony z drugiej indukcyjnosci oraz zmiennej pojemnosci w postaci diody pojemnosciowej* Opisane uklady charakteryzuja sie duzym stopniem komplikacji i wymagaja uzycia 00 najmniej dwóch indukcyjnosci, które sa elementami w istotny sposób pogarszajacymi temperaturowa i dlugookresowa stabilnosc czestotliwosci sygnalu generatora* Elementy indukcyjne sa ponadto elementami o duzej objetosci i sa klopotliwe w montazu z uwagi na koniecznosc ekranowania* Istota ukladu wedlug wynalazku polega na tym, ze pomiedzy baze tranzystora i wspólny punkt wlaozony jest szeregowo dwójnik zlozony z indukcyjnosci i pojemnosci tworzacy wraz z pojemnoscia wlaozona miedzy baze i emiter tranzystora szeregowy obwód2 127 641 o czestotliwosci rezonansowej wiekszej ni* czestotliwosc rezonansu podstawowego rezona¬ tora kwarcowego, lecz mniejszej niz czestotliwosc wykorzystywanego drgania owertonowego rezonatora kwarcowego, a pomiedzy wspólny punkt i emiter tranzystora wlaczony jest sze¬ regowo dwójnik zlozony z pojemnosci przestrajajaoej i rezonatora kwarcowego* Generator wedluc wynalazku charakteryzuje sie szerokim zakresem przestrajania oraz dobra stabilnoscia czestotliwosci sygnalu wynikajaca z ograniczenia liczby elemen¬ tów indukcyjnych do jednej indukoyjnosci, która sluzy do selekcji pozadanego drgania owertonowego oraz do powiekszenia zakresu przestrajania ozestotliwosoi* Cechy te zachowuje generator w calym przedziale czestotliwosci obecnie produkowa¬ nych rezonatorów kwarcowych takze w zakresie fal met rowyoh /do ok* 300 MHz/* Przedmiot wynalazku przedstawiony jest w przykladzie wykonania na rysunku, który stanowi podstawowy uklad generatora wedlug wynalazku* Pomiedzy emiter tranzystora 1 a wspólny punkt 2 wlaczony jest szeregowy obwód rezo¬ nansowy zlozony z indukcyjnosci 3 oraz pojemnosci k i 5» Obwód ten decyduje o selekcji wybranego drgania owertonowego rezonatora 6* Selekcja ta polega na takim doborze wartos¬ ci elementów 3 i 5 aby czestotliwosc rezonansowa wspomnianego obwodu byla wyzsza od czestotliwosci podstawowego drgania rezonatora kwarcowego 6 lecz nizsza od czestotliwos¬ ci wybranego drgania owertonowego rezonatora* Praktycznie reaktancja jaka stanowi powyzszy obwód rezonansowy winna równac sie co do modulu reaktancji jaka przedstawia soba pojemnosc statystyczna rezonatora kwarcowego na czestotliwosci pracy ^generatora* Galaz zlozona z szeregowo polaczonych rezonatora kwarcowego 6 i pojemnosci prze- strajajacej 7 wlaczona jest miedzy emiter tranzystora 1 i wspólny punkt 2* Na czestotli¬ wosci pracy generatora galaz ta ma charakter pojemnosciowy, co implikuje prace rezonato¬ ra ponizej czestotliwosci rezonansu szeregowego wybranego drgania owertonowego* Rezonator pracujacy w tym zakresie czestotliwosci charakteryzuje sie znaczna podatnoscia na prze- strajanie czestotliwosci przy pomocy reaktancji zewnetrznej z uwagi na male nachylenia zmian reaktancji rezonatora w funkcji czestotliwosci* Elementem przestrajajacym czesto¬ tliwosc generatora jest kondensator 7 o zmiennej pojemnosci zrealizowany zazwyczaj w po¬ staci diody pojemnosciowej* Zastrzezenie patentowe Kwarcowy owertonowy generator z przestrajaniem czestotliwosci pracujacy w ukladzie jednotranzystorowym trójpunktowym Colpittsa, znamienny tym, ze pomiedzy baze tranzystora /1/ i wspólny punkt /Z/ wlaczony jest szeregowy dwójnik zlozony z indukcyj- nosci /3/ i pojemnosci /k/ tworzacy wraz z pojemnoscia /5/ wlaczona miedzy baze i emiter tranzystora /1/ szeregowy obwód o czestotliwosci rezonansowej wiekszej niz czestotliwosc rezonansu podstawowego rezonatora kwarcowego /6/ lecz mniejszej niz czestotliwosc wyko¬ rzystywanego drgania owertonowego rezonatora kwarcowego /6/, a pomiedzy wspólny punkt /2/ i emiter tranzystora /1/ wlaczony jest szeregowy dwójnik zlozony z pojemnosci przestrajajaoej /7/ i rezonatora kwarcowego /6/* Pracownia Poligraficzna UP PRL. Naklad 100 egz.Cena 100 zl PLThe present invention relates to a frequency tuned overtone quartz generator. The known design of an overtone overtone generator with frequency tunable (US Patent No. k 001 * 72k) is a Colpitts three point generator circuit with cascade output. In this system, in order to obtain the required tuning range and selection of the desired overtone vibration, two inductive elements connected in series and in parallel with the quartz resonator were used. A capacitive diode connected in series with the third inductive element is used to tune the frequency. The fourth inductive element connected between the capacitive diode and the emitter of the transistor serves to eliminate undesirable vibrations in the system * Another known design of the generator with tuned frequency / US patent No. 3,916 3kk / works in a three-transistor Butler system * and * A two-terminal composed of a quartz field oscillator and inductance is connected between the emitters of the transistors constituting the resonant amplifier * The load of the first transistor in the amplifier is a parallel resonant circuit composed of the second inductance and a variable capacitance in the form of a capacitive diode * The described circuits are characterized by a high degree of complication and require the use of 00 at least two inductances significantly deteriorating the temperature and long-term stability of the generator signal frequency * Inductive elements are also large-volume elements and are difficult to assemble due to the need for screening * The essence of the system according to the formula between the base of the transistor and the common point, there is a series of two-pole composed of inductance and capacitance, which together with the capacitance inserted between the base and the emitter of the transistor form a series circuit2 127 641 with a resonant frequency greater than the frequency of the fundamental resonance resonance, lower than the frequency of the used overtone quartz resonator, and between the common point and the emitter of the transistor there is a two-terminal in series consisting of the tuning capacitance and the quartz resonator * The generator, according to the invention, is characterized by a wide range of tuning and good frequency stability due to the number of signal elements inductance to one inductance, which is used to select the desired overtone vibration and to increase the range of tuning of the frequency. These features are retained by the generator over the entire frequency range of currently produced quartz resonators Also in the meter wavelength range (up to about 300 MHz). The subject of the invention is presented in an example of an embodiment in the drawing, which is the basic generator circuit according to the invention. * Between the emitter of the transistor 1 and the common point 2 a series resonant circuit composed of inductance 3 and capacitance ki 5 This circuit determines the selection of the selected oscillation of the overtone resonator 6 * This selection consists in selecting the values of the elements 3 and 5 in such a way that the resonant frequency of the mentioned circuit is higher than the frequency of the fundamental oscillation of the quartz resonator 6 but lower than the frequency of the selected oscillation of the overtone resonator * Practically, the reactance of the above resonant circuit should be equal to the reactance modulus of the statistical capacity of the quartz resonator at the operating frequency of the generator * Gallium composed of a series-connected quartz resonator 6 and the striking capacity 7 is on emitter t 1 and common point 2 * At the generator operating frequency, this branch has a capacitive character, which implies that the resonator works below the series resonance frequency of the selected overtone vibration * The resonator operating in this frequency range is characterized by considerable susceptibility to frequency shifting by external reactance due to small slopes of the resonator reactance changes as a function of frequency * The generator frequency tuning element is a capacitor 7 of variable capacity, usually in the form of a capacitive diode * Patent disclaimer Quartz overtone generator with frequency tuning, working in a single-point Column configuration characterized by the fact that between the base of the transistor / 1 / and the common point / Z / there is a series two-terminal composed of inductance / 3 / and capacitance / k / forming together with the capacitance / 5 / between the transistor's base and emitter / 1 / serial circuit resonance frequency greater than the fundamental resonance frequency of the quartz resonator / 6 / but lower than the frequency of the used oscillation of the overtone quartz resonator / 6 /, and between the common point / 2 / and the emitter of the transistor / 1 / there is a serial double junction tuned with capacitance / and a quartz resonator / 6 / * Pracownia Poligraficzna UP PRL. Mintage 100 copies Price PLN 100 PL

Claims (1)

1. Zastrzezenie patentowe Kwarcowy owertonowy generator z przestrajaniem czestotliwosci pracujacy w ukladzie jednotranzystorowym trójpunktowym Colpittsa, znamienny tym, ze pomiedzy baze tranzystora /1/ i wspólny punkt /Z/ wlaczony jest szeregowy dwójnik zlozony z indukcyj- nosci /3/ i pojemnosci /k/ tworzacy wraz z pojemnoscia /5/ wlaczona miedzy baze i emiter tranzystora /1/ szeregowy obwód o czestotliwosci rezonansowej wiekszej niz czestotliwosc rezonansu podstawowego rezonatora kwarcowego /6/ lecz mniejszej niz czestotliwosc wyko¬ rzystywanego drgania owertonowego rezonatora kwarcowego /6/, a pomiedzy wspólny punkt /2/ i emiter tranzystora /1/ wlaczony jest szeregowy dwójnik zlozony z pojemnosci przestrajajaoej /7/ i rezonatora kwarcowego /6/* Pracownia Poligraficzna UP PRL. Naklad 100 egz. Cena 100 zl PL1. Patent claim Quartz overtone generator with frequency tuning working in the Colpitts single-transistor three-point system, characterized in that between the transistor base / 1 / and the common point / Z / there is a serial two-terminal composed of inductance / 3 / and capacitance / k / forming, together with the capacitance / 5 /, between the base and the emitter of the transistor / 1 / a series circuit with a resonant frequency higher than the basic resonance frequency of the quartz resonator / 6 / but lower than the frequency of the vibrations of the overtone quartz resonator / 6 / and between / 2 / and the emitter of the transistor / 1 / the serial two-terminal is on, consisting of the tuning capacitance / 7 / and a quartz resonator / 6 / * Pracownia Poligraficzna UP PRL. Mintage 100 copies. Price PLN 100 PL
PL22200580A 1980-02-13 1980-02-13 Quartz overtone oscillator with tunable frequency PL127641B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL22200580A PL127641B1 (en) 1980-02-13 1980-02-13 Quartz overtone oscillator with tunable frequency
FR8102780A FR2475821A1 (en) 1980-02-13 1981-02-12 ADJUSTABLE FREQUENCY QUARTZ RESONATOR OSCILLATOR WITH RESONANCE IN HARMONIC MODES
DE19813105134 DE3105134A1 (en) 1980-02-13 1981-02-12 OBERTON QUARTZ OSCILLATOR
GB8104635A GB2069788A (en) 1980-02-13 1981-02-13 Improvements in or relating to tuneable quartz overtone oscillators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL22200580A PL127641B1 (en) 1980-02-13 1980-02-13 Quartz overtone oscillator with tunable frequency

Publications (2)

Publication Number Publication Date
PL222005A1 PL222005A1 (en) 1981-08-21
PL127641B1 true PL127641B1 (en) 1983-11-30

Family

ID=20001342

Family Applications (1)

Application Number Title Priority Date Filing Date
PL22200580A PL127641B1 (en) 1980-02-13 1980-02-13 Quartz overtone oscillator with tunable frequency

Country Status (4)

Country Link
DE (1) DE3105134A1 (en)
FR (1) FR2475821A1 (en)
GB (1) GB2069788A (en)
PL (1) PL127641B1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2544929B1 (en) * 1983-04-20 1986-03-21 Adret Electronique LOW NOISE QUARTZ OSCILLATOR
NL8301905A (en) * 1983-05-30 1984-12-17 Philips Nv OSCILLATOR SWITCH.
DE3339512A1 (en) * 1983-10-31 1985-05-09 Siemens AG, 1000 Berlin und 8000 München Harmonic crystal oscillator having a capacitive three-point circuit
US4843349A (en) * 1988-04-27 1989-06-27 Westinghouse Electric Corp. UHF crystal oscillator
GB9617313D0 (en) * 1996-08-17 1996-09-25 Cedardell Ltd Transmitter controller

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1467718A (en) * 1974-06-25 1977-03-23 Gen Electric Co Ltd Piezoelectric resonators
DE2739057C2 (en) * 1977-08-30 1985-06-20 Siemens AG, 1000 Berlin und 8000 München Low noise, high frequency transistor oscillator

Also Published As

Publication number Publication date
PL222005A1 (en) 1981-08-21
DE3105134A1 (en) 1982-01-07
GB2069788A (en) 1981-08-26
FR2475821A1 (en) 1981-08-14

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