TW202312671A - Oscillator including a voltage switching circuit, a voltage adjusting circuit, and a frequency generating circuit - Google Patents
Oscillator including a voltage switching circuit, a voltage adjusting circuit, and a frequency generating circuit Download PDFInfo
- Publication number
- TW202312671A TW202312671A TW110133087A TW110133087A TW202312671A TW 202312671 A TW202312671 A TW 202312671A TW 110133087 A TW110133087 A TW 110133087A TW 110133087 A TW110133087 A TW 110133087A TW 202312671 A TW202312671 A TW 202312671A
- Authority
- TW
- Taiwan
- Prior art keywords
- voltage
- signal
- output
- voltage signal
- transistor switch
- Prior art date
Links
Images
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Surgical Instruments (AREA)
Abstract
Description
本發明係有關於一種振盪器,特別是有關於一種無須使用石英晶體的振盪器。The present invention relates to an oscillator, in particular to an oscillator which does not require the use of a quartz crystal.
振盪器電路係為目前廣泛使用的電路之一,用於產生具有振盪頻率之訊號,作為各種電子產品中的頻率訊號來源。然而,在目前振盪器電路的整體架構上,需要使用石英晶體作為訊號的來源,因而提高了振盪器的製作成本,且造成振盪器電路在電路設計上的複雜度較高。Oscillator circuit is one of the widely used circuits at present, which is used to generate signals with oscillation frequency as the source of frequency signals in various electronic products. However, in the overall structure of the current oscillator circuit, a quartz crystal needs to be used as a signal source, thus increasing the manufacturing cost of the oscillator and causing high complexity in the circuit design of the oscillator circuit.
據此,如何提供一種無須使用石英晶體的振盪器已成為目前急需研究的課題。Accordingly, how to provide an oscillator without using a quartz crystal has become an urgent research topic.
鑑於上述問題,本發明揭露一種振盪器,包含電壓切換電路、電壓調整電路以及頻率產生電路。電壓切換電路電性連接第一輸出端及第二輸出端,並接收第一輸出端及第二輸出端產生的第一輸出電壓訊號及第二輸出電壓訊號,以藉由第一輸出電壓訊號及第二輸出電壓訊號切換第一輸入電壓訊號輸出至第一電壓準位訊號,以及切換第二輸入電壓訊號輸出至第二電壓準位訊號,其中第一電壓準位訊號與第二電壓準位訊號係反相,第一輸出電壓訊號與第二輸出電壓訊號係反相,第一電壓準位訊號與第二電壓準位訊號係反相。電壓調整電路電性連接電壓切換電路,並接收第一電壓準位訊號及第二電壓準位訊號的電壓,以藉由第一電壓準位訊號及第二電壓準位訊號的電壓產生第一調整電壓訊號及第二調整電壓訊號。頻率產生電路電性連接電壓調整電路,並接收第一調整電壓訊號及第二調整電壓訊號,以根據第一調整電壓訊號及第二調整電壓訊號產生第一輸出頻率訊號及第二輸出頻率訊號。In view of the above problems, the present invention discloses an oscillator including a voltage switching circuit, a voltage adjusting circuit and a frequency generating circuit. The voltage switching circuit is electrically connected to the first output terminal and the second output terminal, and receives the first output voltage signal and the second output voltage signal generated by the first output terminal and the second output terminal, so as to use the first output voltage signal and The second output voltage signal switches the output of the first input voltage signal to the first voltage level signal, and switches the output of the second input voltage signal to the second voltage level signal, wherein the first voltage level signal and the second voltage level signal Inverted, the first output voltage signal and the second output voltage signal are inverted, the first voltage level signal and the second voltage level signal are inverted. The voltage adjustment circuit is electrically connected to the voltage switching circuit, and receives the voltages of the first voltage level signal and the second voltage level signal, so as to generate the first adjustment by the voltages of the first voltage level signal and the second voltage level signal The voltage signal and the second adjusted voltage signal. The frequency generation circuit is electrically connected to the voltage adjustment circuit, and receives the first adjustment voltage signal and the second adjustment voltage signal, so as to generate the first output frequency signal and the second output frequency signal according to the first adjustment voltage signal and the second adjustment voltage signal.
承上所述,本發明藉由電路設計,在無須使用石英晶體的情況下,即可產生可調振盪頻率之振盪器,具有成本低廉、設計簡易以及彈性調節等優點。Based on the above, the present invention can generate an oscillator with an adjustable oscillation frequency without using a quartz crystal through circuit design, and has the advantages of low cost, simple design, and flexible adjustment.
請參閱圖1及圖2,其係為本發明振盪器的方塊示意圖以及各個電壓訊號以及輸出頻率訊號相位示意圖。振盪器1包含電壓切換電路11、電壓調整電路12以及頻率產生電路13。電壓切換電路11具有第一輸入端及第二輸入端,第一輸入端接收第一輸入電壓訊號VI1,第二輸入端接收第二輸入電壓訊號VI2,電壓切換電路11進一步電性連接振盪器1的第一輸出端及第二輸出端,並接收振盪器1第一輸出端及第二輸出端輸出的第一輸出電壓訊號VO1及第二輸出電壓訊號VO2,以藉由第一輸出電壓訊號VO1及第二輸出電壓訊號VO2切換第一輸入電壓訊號VI1輸出至第一電壓準位訊號VL1,以及切換第二輸入電壓訊號VI2輸出至第二電壓準位訊號VL2,其中第一電壓準位訊號VL1與第二電壓準位訊號VL2係為反相的電壓準位訊號。電壓調整電路12電性連接電壓切換電路11,並接收第一電壓準位訊號VL1及第二電壓準位訊號VL2的電壓,以藉由第一電壓準位訊號VL1及第二電壓準位訊號VL2的電壓產生第一調整電壓訊號VA1及第二調整電壓訊號VA2。頻率產生電路13電性連接電壓調整電路12,並接收第一調整電壓訊號VA1及第二調整電壓訊號VA2,以根據第一調整電壓訊號VA1及第二調整電壓訊號VA2產生具有第一輸出頻率訊號f1的第一輸出電壓訊號VO1以及具有第二輸出頻率訊號f2的第二輸出電壓訊號VO2,其中第一輸出頻率訊號f1與第二輸出頻率訊號f2係反相。Please refer to FIG. 1 and FIG. 2 , which are block schematic diagrams of the oscillator of the present invention and phase schematic diagrams of various voltage signals and output frequency signals. The oscillator 1 includes a
請參閱圖3,其係為本發明振盪器的電壓切換電路示意圖。電壓切換電路11包含第一電晶體開關111、第二電晶體開關112、第三電晶體開關113以及第四電晶體開關114。第一電晶體開關111及第二電晶體開關112係為P型金氧半導體(PMOS)電晶體,第三電晶體開關113以及第四電晶體開關114係為N型金氧半導體(NMOS)電晶體。第一電晶體開關111具有第一接收端、第一驅動端及第一輸出端,第一接收端連接接收第一輸入電壓訊號VI1,第一驅動端接收第一輸出電壓訊號VO1,使第一電晶體開關111根據第一輸出電壓訊號VO1開啟或關閉,並使得第一輸出端的訊號隨著第一輸出電壓訊號VO1以及第一輸入電壓訊號VI1而變動。第二電晶體開關112具有第二接收端、第二驅動端及第二輸出端,第二接收端接收第一輸入電壓訊號VI1,第二驅動端接收第二輸出電壓訊號VO2,使第二電晶體開關112根據第二輸出電壓訊號VO2開啟或關閉,並使得第二輸出端的訊號隨著第二輸出電壓訊號VO2以及第一輸入電壓訊號VI1而變動。第三電晶體開關113具有第三接收端、第三驅動端及第三輸出端,第三接收端接收第二輸入電壓訊號VI2,第三驅動端接收第一輸出電壓訊號VO1,使第三電晶體開關113根據第一輸出電壓訊號VO1開啟或關閉,並使得第三輸出端的訊號隨著第一輸出電壓訊號VO1以及第二輸入電壓訊號VI2而變動。第四電晶體開關114具有第四接收端、第四驅動端及第四輸出端,第四接收端接收第二輸入電壓訊號VI2,第四驅動端接收第二輸出電壓訊號VO2,使第四電晶體開關114根據第二輸出電壓訊號VO2開啟或關閉,並使得第四輸出端的訊號隨著第二輸出電壓訊號VO2以及第二輸入電壓訊號VI2而變動。Please refer to FIG. 3 , which is a schematic diagram of the voltage switching circuit of the oscillator of the present invention. The
承上所述,於本發明之一實施例中,當第三電晶體開關113的第三驅動端接收到的第一輸出電壓訊號VO1為高電壓準位時,使得第三電晶體開關113導通,第三電晶體開關113則根據第一輸出電壓訊號VO1以及第二輸入電壓訊號VI2,切換第三輸出端的訊號為第一電壓準位訊號VL1。此時,由於第二輸出電壓訊號VO2與第一輸出電壓訊號VO1係為反相,因此,第二電晶體開關112導通,第二電晶體開關112則根據第二輸出電壓訊號VO2以及第一輸入電壓訊號VI1,切換第二輸出端的訊號為第二電壓準位訊號VL2。相同地,當第一電晶體開關111的第一驅動端接收到的第一輸出電壓訊號VO1為低電壓準位時,使得第一電晶體開關111導通,第一電晶體開關111則根據第一輸出電壓訊號VO1以及第一輸入電壓訊號VI1,切換第一輸出端的訊號為第一電壓準位訊號VL1。此時,由於第二輸出電壓訊號VO2與第一輸出電壓訊號VO1係為反相,因此,第四電晶體開關114導通,第四電晶體開關114則根據第二輸出電壓訊號VO2以及第二輸入電壓訊號VI2,切換第四輸出端的訊號為第二電壓準位訊號VL2,其中第一電壓準位訊號VL1與第二電壓準位訊號VL2係為反相的電壓訊號準位。其餘電晶體開關的作動原理與此相同,相似的作動過程於此不再贅述。As mentioned above, in one embodiment of the present invention, when the first output voltage signal VO1 received by the third driving terminal of the
請參閱圖4,其係為本發明振盪器的電壓調整電路示意圖。電壓調整電路12包含第一充放電元件121及第二充放電元件122,第一充放電元件121根據電壓切換電路11產生的第一電壓準位訊號VL1或第二電壓準位訊號VL2充電或放電,第二充放電元件122根據第一電壓準位訊號VL1或第二電壓準位訊號VL2充電或放電。於本發明之實施例中,第一充放電元件121包含第一電阻R1及第一可變電容C1,第一電阻R1的第一端連接第一電壓準位訊號VL1的電壓,第二端連接第一可變電容C1的第一端,第一可變電容C1的第二端連接第二電壓準位訊號VL2的電壓。第二充放電元件122包含第二電阻R2及第二可變電容C2,第二電阻R2的第一端連接第二電壓準位訊號VL2的電壓,第二端連接第二可變電容C2的第一端,第一可變電容C2的第二端連接第一電壓準位訊號VL1的電壓,其中第一調整電壓訊號VA1係藉由調整第一可變電容C1的電容值改變其電壓值,亦即藉由調整第一充放電元件121的時間常數改變其充放電速度,第二調整電壓訊號VA2係藉由調整第二可變電容C2的電容值改變其電壓值,亦即藉由調整第二充放電元件122的時間常數改變其充放電速度。Please refer to FIG. 4 , which is a schematic diagram of the voltage adjustment circuit of the oscillator of the present invention. The
承上所述,當第一電壓準位訊號VL1處於高電壓準位時,係透過第一電阻R1對第一可變電容C1充電,使得第一可變電容C1的端點上產生的第一調整電壓訊號VA1為高電壓準位,相對地,當第二電壓準位訊號VL2處於低電壓準位,第二可變電容C2係透過第二電阻R2放電,使得第二可變電容C2的端點上產生的第二調整電壓訊號VA2為低電壓準位。相似地,當第一電壓準位訊號VL1處於低電壓準位時,第一可變電容C1係透過第一電阻R1放電,使得第一可變電容C1的端點上產生的第一調整電壓訊號VA1為低電壓準位,相對地,當第二電壓準位訊號VL2處於高電壓準位,第二可變電容C2係透過第二電阻R2對第二可變電容C2充電,使得第二可變電容C2的端點上產生的第二調整電壓訊號VA2為高電壓準位。As mentioned above, when the first voltage level signal VL1 is at a high voltage level, the first variable capacitor C1 is charged through the first resistor R1, so that the first voltage generated at the terminal of the first variable capacitor C1 Adjust the voltage signal VA1 to a high voltage level. Correspondingly, when the second voltage level signal VL2 is at a low voltage level, the second variable capacitor C2 is discharged through the second resistor R2, so that the terminal of the second variable capacitor C2 The second adjustment voltage signal VA2 generated at the point is a low voltage level. Similarly, when the first voltage level signal VL1 is at a low voltage level, the first variable capacitor C1 is discharged through the first resistor R1, so that the first adjustment voltage signal generated at the terminal of the first variable capacitor C1 VA1 is a low voltage level. Relatively, when the second voltage level signal VL2 is at a high voltage level, the second variable capacitor C2 charges the second variable capacitor C2 through the second resistor R2, so that the second variable capacitor C2 The second adjustment voltage signal VA2 generated at the terminal of the capacitor C2 is a high voltage level.
請參閱圖5,其係為本發明振盪器的頻率產生電路示意圖。頻率產生電路13包含定電壓電路131以及反相偏壓比較電路132。定電壓電路131輸出一定電壓訊號VC至反相偏壓比較電路132。反相偏壓比較電路132電性連接定電壓電路131及電壓調整電路12,並接收定電壓電路131產生的定電壓訊號VC,以及接收電壓調整電路12產生的第一調整電壓訊號VA1及第二調整電壓訊號VA2,以根據定電壓訊號VC、第一調整電壓訊號VA1及第二調整電壓訊號VA2產生具有第一輸出頻率訊號f1的第一輸出電壓訊號VO1及具有第二輸出頻率訊號f2的第二輸出電壓訊號VO2。Please refer to FIG. 5 , which is a schematic diagram of the frequency generating circuit of the oscillator of the present invention. The
定電壓電路131包含比較電路131A、偏壓電路131B以及複製電路131C。比較電路131A具有第一輸入端、第二輸入端及輸出端。偏壓電路131B電性連接至高電壓、低電壓及比較電路131A的第一輸入端,以產生偏壓電壓訊號VR1至比較電路131A的第一輸入端。複製電路131C電性連接至高電壓、低電壓以及比較電路131A的輸出端及第二輸入端,以產生複製電壓訊號VR2至比較電路131A的第二輸入端。比較電路131A藉由比較偏壓電壓訊號VR1及複製電壓訊號VR2以產生一比較結果,並由該比較結果產生定電壓訊號VC至複製電路131C及反相偏壓比較電路132。The
反相偏壓比較電路132包含第五電晶體開關132A、第六電晶體開關132B、第七電晶體開關132C、第八電晶體開關132D、第九電晶體開關132E、第一反相器132F及第二反相器132G。第五電晶體開關132A、第六電晶體開關132B、第七電晶體開關132C係為P型金氧半導體(PMOS)電晶體,第八電晶體開關132D、第九電晶體開關132E係為N型金氧半導體(NMOS)電晶體。第五電晶體開關132A的汲極端連接高電壓,閘極端連接定電壓電路131的輸出端,以根據定電壓電路131產生的定電壓訊號VC作動。而由於定電壓電路131產生的定電壓訊號VC之電壓為一固定值,因此,第五電晶體開關132A係處於固定開啟的狀態。第六電晶體開關132B的閘極連接第八電晶體開關132D的閘極,並接收第一調整電壓訊號VA1。第六電晶體開關132B的源極連接第八電晶體開關132D的汲極,並連接第一反相器132F的輸入端。第八電晶體開關132D的源極連接低電壓。第七電晶體開關132C的閘極連接第九電晶體開關132E的閘極,並接收第二調整電壓訊號VA2。第七電晶體開關132C的源極連接第九電晶體開關132E的汲極,並連接第二反相器132G的輸入端。第九電晶體開關132E的源極連接低電壓。The reverse
承上所述,當第一調整電壓訊號VA1為高電壓準位時,第八電晶體1開關132D導通,使得第一反相器132F的輸入端為低電壓準位,輸出端則反相輸出具有第一輸出頻率訊號f1的第一輸出電壓訊號VO1,其係為高電壓準位。當第一調整電壓訊號VA1為高電壓準位時,第二調整電壓訊號VA2則相對為低電壓準位,第七電晶體開關132C導通,使得第二反相器132G的輸入端為高電壓準位,輸出端則反相輸出具有第二輸出頻率訊號f2的第二輸出電壓訊號VO2,其係為低電壓準位。相似地,當第一調整電壓訊號VA1為低電壓準位時,第六電晶體開關132B導通,使得第一反相器132F的輸入端為高電壓準位,輸出端則反相輸出具有第一輸出頻率訊號f1的第一輸出電壓訊號VO1,其係為低電壓準位。當第一調整電壓訊號VA1為低電壓準位時,第二調整電壓訊號VA2則相對為高電壓準位,第九電晶體開關132E導通,使得第二反相器132G的輸入端為低電壓準位,輸出端則反相輸出具有第二輸出頻率訊號f2的第二輸出電壓訊號VO2,其係為高電壓準位,其中第一輸出頻率訊號f1與第二輸出頻率訊號f2係反相。As mentioned above, when the first adjustment voltage signal VA1 is at a high voltage level, the eighth transistor 1
綜上所述,本發明藉由簡易的電路設計,在無須使用石英晶體的情況下,即可產生可調式之振盪器電路的震盪頻率,具有成本低廉、設計簡易以及彈性調節等優點。To sum up, the present invention can generate an adjustable oscillation frequency of an oscillator circuit without using a quartz crystal through a simple circuit design, and has the advantages of low cost, simple design, and flexible adjustment.
1:振盪器
11:電壓切換電路
111:第一電晶體開關
112:第二電晶體開關
113:第三電晶體開關
114:第四電晶體開關
12:電壓調整電路
121:第一充放電元件
122:第二充放電元件
13:頻率產生電路
131:定電壓電路
131A:比較電路
131B:偏壓電路
131C:複製電路
132:反相偏壓比較電路
132A:第五電晶體開關
132B:第六電晶體開關
132C:第七電晶體開關
132D:第八電晶體開關
132E:第九電晶體開關
132F:第一反相器
132G:第二反相器
VI1:第一輸入電壓訊號
VI2:第二輸入電壓訊號
VL1:第一電壓準位訊號
VL2:第二電壓準位訊號
VO1:第一輸出電壓訊號
VO2:第二輸出電壓訊號
VA1:第一調整電壓訊號
VA2:第二調整電壓訊號
VR1:偏壓電壓訊號
VR2:複製電壓訊號
VC:定電壓訊號
R1:第一電阻
C1:第一可變電容
R2:第二電阻
C2:第二可變電容
1: Oscillator
11: Voltage switching circuit
111: first transistor switch
112: second transistor switch
113: The third transistor switch
114: The fourth transistor switch
12: Voltage adjustment circuit
121: The first charging and discharging element
122: The second charging and discharging element
13: Frequency generating circuit
131:
圖1係為本發明振盪器的方塊示意圖; 圖2係為本發明振盪器各個電壓訊號以及輸出頻率訊號的相位示意圖; 圖3係為本發明振盪器的電壓切換電路示意圖; 圖4係為本發明振盪器的電壓調整電路示意圖;以及 圖5係為本發明振盪器的頻率產生電路示意圖。 Fig. 1 is a schematic block diagram of an oscillator of the present invention; Fig. 2 is the phase schematic diagram of each voltage signal and output frequency signal of the oscillator of the present invention; Fig. 3 is the schematic diagram of the voltage switching circuit of the oscillator of the present invention; Fig. 4 is the schematic diagram of the voltage adjustment circuit of the oscillator of the present invention; and FIG. 5 is a schematic diagram of the frequency generating circuit of the oscillator of the present invention.
1:振盪器 1: Oscillator
11:電壓切換電路 11: Voltage switching circuit
12:電壓調整電路 12: Voltage adjustment circuit
13:頻率產生電路 13: Frequency generating circuit
VI1:第一輸入電壓訊號 VI1: The first input voltage signal
VI2:第二輸入電壓訊號 VI2: Second input voltage signal
VO1:第一輸出電壓訊號 VO1: The first output voltage signal
VO2:第二輸出電壓訊號 VO2: Second output voltage signal
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW110133087A TWI785779B (en) | 2021-09-06 | 2021-09-06 | oscillator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW110133087A TWI785779B (en) | 2021-09-06 | 2021-09-06 | oscillator |
Publications (2)
Publication Number | Publication Date |
---|---|
TWI785779B TWI785779B (en) | 2022-12-01 |
TW202312671A true TW202312671A (en) | 2023-03-16 |
Family
ID=85794748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW110133087A TWI785779B (en) | 2021-09-06 | 2021-09-06 | oscillator |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI785779B (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE519333C2 (en) * | 2000-08-25 | 2003-02-18 | Ericsson Telefon Ab L M | Mixer comprising noise-reducing passive filter |
TWI430591B (en) * | 2011-08-25 | 2014-03-11 | Richwave Technology Corp | Radio frequency circuits and mixers |
TWI686054B (en) * | 2019-07-04 | 2020-02-21 | 國立暨南國際大學 | Downmixer |
CN112910416A (en) * | 2021-01-14 | 2021-06-04 | 温州大学 | High-gain millimeter wave mixer applied to automobile radar |
-
2021
- 2021-09-06 TW TW110133087A patent/TWI785779B/en active
Also Published As
Publication number | Publication date |
---|---|
TWI785779B (en) | 2022-12-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3931588A (en) | Voltage controlled oscillator utilizing field effect transistors | |
US5485126A (en) | Ring oscillator circuit having output with fifty percent duty cycle | |
EP0735677A1 (en) | Oscillator circuit having oscillation frequency independent from the supply voltage value | |
US5705946A (en) | Low power low voltage level shifter | |
CN114124040A (en) | Low-power consumption relaxation oscillation circuit capable of self-adapting to threshold value | |
CN110995161B (en) | Frequency-adjustable ring oscillator circuit based on RC | |
US4947140A (en) | Voltage controlled oscillator using differential CMOS circuit | |
CN109510596B (en) | Frequency adjusting circuit and CMOS oscillator | |
CN112953526A (en) | Ring oscillation circuit, method and integrated chip | |
CN108667439B (en) | Novel low-power-consumption high-precision low-temperature-drift RC oscillator | |
US6211744B1 (en) | Ring oscillator having an externally adjustable variable frequency | |
US20060232346A1 (en) | Integrated circuit including a ring oscillator circuit | |
TWI785779B (en) | oscillator | |
CN106026983A (en) | Ring oscillator | |
CN215072364U (en) | Annular oscillation circuit and integrated chip | |
KR20030072527A (en) | Generator of dc-dc converter | |
US7321270B2 (en) | Current-controlled CMOS ring oscillator circuit | |
CN111510114B (en) | Clock generator circuit | |
CN115776278A (en) | Oscillator | |
US5701105A (en) | Timer oscillation circuit with comparator clock control signal synchronized with oscillation signal | |
US11444573B1 (en) | Oscillator | |
US20240223127A1 (en) | Rc oscillator | |
CN111682865A (en) | Relaxation oscillator and on-chip | |
CN114244320B (en) | Relaxation oscillation circuit | |
CN113938100B (en) | Oscillator |