CN102832883A - Voltage-controlled oscillating circuit and wireless communication equipment - Google Patents
Voltage-controlled oscillating circuit and wireless communication equipment Download PDFInfo
- Publication number
- CN102832883A CN102832883A CN2012103150586A CN201210315058A CN102832883A CN 102832883 A CN102832883 A CN 102832883A CN 2012103150586 A CN2012103150586 A CN 2012103150586A CN 201210315058 A CN201210315058 A CN 201210315058A CN 102832883 A CN102832883 A CN 102832883A
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- variable capacitance
- capacitance diode
- frequency
- inductance
- 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
Images
Abstract
The embodiment of the invention discloses a voltage-controlled oscillating circuit and wireless communication equipment. The voltage-controlled oscillating circuit comprises a frequency-selecting feedback network, a first amplifying circuit and a second amplifying circuit, wherein the frequency-selecting feedback network is used for selecting an oscillation frequency signal from electric pulse; the first amplifying circuit is used for amplifying the oscillation frequency signal selected by the frequency-selecting feedback network and then outputting the signal; the second amplifying circuit is used for amplifying the signal output by the first amplifying circuit and then outputting the signal; and the frequency-selecting feedback network is also used for feeding back the signal output by the second amplifying circuit to the first amplifying circuit to be amplified and then outputting the signal. Due to the adoption of the technical scheme provided by the embodiment of the invention, the open loop phase noise of the voltage-controlled oscillating circuit is favorably reduced.
Description
Technical field
The present invention relates to electric and electronic technical field, be specifically related to voltage-controlled oscillating circuit and Wireless Telecom Equipment.
Background technology
As everyone knows, frequency source is one of core of Wireless Telecom Equipment.At present, the low voltage control oscillating circuit (VCO, voltage-controlled oscillator) of making an uproar mutually is the very important problem of high performance wireless communication apparatus.For example with frequency division multiple access (FDMA; Frequency division multiple access) is the individual radio digital handset (DPMR of communication modes; Digital private mobile radio) PHY requirement channel spacing is 6.25KHZ; Compare wireless digital intercom (DMR; Digital mobile radio) channel spacing one times of constriction, and the hardcore-frequency source of Wireless Telecom Equipment, the value of making an uproar mutually at the adjacency channel frequency interval increases along with reducing of adjacency channel frequency spacing value.Frequency source is big more in the value of making an uproar mutually at adjacency channel frequency interval, and then adjacent-channel interference and side channel power leakage performance worsen more, thereby will cause with DPMR when being the digital handset conversation of standard the side channel string serious frequently.
The main capacitance three-point type that adopts vibrates in the VCO topological structure of existing main flow; Wherein, Oscillating tube is an one-level; The amplification mode is common collector or common gate mode, and the noise factor of general main Q value and minimizing active device through improving the passive device in the oscillating circuit reduces the phase noise of VCO.Research and practice find that the loaded Q of the VCO of existing topological structure can't reach very high value, make the VCO open loop index of making an uproar mutually be difficult to reach high requirement.
Summary of the invention
The embodiment of the invention provides a kind of voltage-controlled oscillating circuit and Wireless Telecom Equipment, makes an uproar mutually in the hope of the open loop that reduces voltage-controlled oscillating circuit.
One aspect of the present invention provides a kind of voltage-controlled oscillating circuit, comprising:
Frequency-selecting feedback network, first amplifying circuit and second amplifying circuit, wherein, said first amplifying circuit is common collector amplifying circuit or common drain amplifying circuit, said second amplifying circuit is common-base amplification circuit or common gate amplifying circuit; Wherein, One end of said frequency-selecting feedback network is connected with the input of said first amplifying circuit; The other end of said frequency-selecting feedback network is connected with the output of said second amplifying circuit, and the output of said first amplifying circuit is connected with the input of second amplifying circuit;
Wherein, said frequency-selecting feedback network is used for pulse frequency-selecting from power on and goes out oscillation frequency signal;
Said first amplifying circuit is used for the oscillation frequency signal that said frequency-selecting feedback network is selected is amplified back output;
Said second amplifying circuit, the signal that is used for said first amplifying circuit output amplifies back output;
Said frequency-selecting feedback network also is used for, and amplifies back output for said first amplifying circuit signal feedback of said second amplifying circuit output.
Optional, said voltage-controlled oscillating circuit also comprises:
Tunable frequency-selecting phase-shift network, wherein, said first amplification circuit output end is connected through said tunable frequency-selecting phase-shift network with the input of second amplifying circuit;
Said tunable frequency-selecting phase-shift network is used for the signal of said first amplifying circuit output is carried out exporting after the phase compensation;
Said second amplifying circuit specifically is used for, and the signal that said tunable frequency-selecting phase-shift network is exported amplifies back output.
Optional, said tunable frequency-selecting phase-shift network is a LC type frequency-selecting phase-shift network.
Optional, said frequency-selecting feedback network is a LC type frequency-selecting feedback network.
Optional, said frequency-selecting feedback network comprises: first inductance, second inductance and the 3rd inductance, first variable capacitance diode and the 3rd variable capacitance diode, first electric capacity, second electric capacity, the 4th electric capacity, the 5th electric capacity, the 7th electric capacity and the 8th electric capacity;
The negative electrode of wherein, the plus earth of first variable capacitance diode, first variable capacitance diode is connected with the VT input of frequency-selecting feedback network through first inductance; The VT input of said frequency-selecting feedback network is also through first capacity earth;
Wherein, the negative electrode of the 3rd variable capacitance diode is connected with the negative electrode of first variable capacitance diode; The anode of the 3rd variable capacitance diode is also through the second inductance ground connection; The anode of the 3rd variable capacitance diode is also through second electric capacity and the 4th capacity earth; The anode of the 3rd variable capacitance diode is also through second electric capacity and the 3rd inductance ground connection, and the anode of the 3rd variable capacitance diode is also through second electric capacity, the 5th electric capacity, the 7th electric capacity and the 8th capacity earth.
Optional, said frequency-selecting feedback network comprises:
The 8th resistance, second inductance and the 3rd inductance, first variable capacitance diode, the 3rd variable capacitance diode and the 4th variable capacitance diode, first electric capacity, second electric capacity, the 4th electric capacity, the 5th electric capacity, the 7th electric capacity and the 8th electric capacity;
The negative electrode of wherein, the plus earth of first variable capacitance diode, first variable capacitance diode is connected with the VT input of frequency-selecting feedback network through the 8th resistance; The VT input of said frequency-selecting feedback network is also through first capacity earth;
Wherein, the negative electrode of the 3rd variable capacitance diode is connected with the negative electrode of first variable capacitance diode; The anode of the 3rd variable capacitance diode is also through the second inductance ground connection; The anode of the 3rd variable capacitance diode is also through second electric capacity and the 4th capacity earth; The anode of the 3rd variable capacitance diode is also through second electric capacity and the 3rd inductance ground connection, and the anode of the 3rd variable capacitance diode is also through second electric capacity, the 5th electric capacity, the 7th electric capacity and the 8th capacity earth.
Optional, said frequency-selecting feedback network also comprises:
Second variable capacitance diode and the 4th variable capacitance diode; Wherein, the anode of second variable capacitance diode is connected with the anode of first variable capacitance diode; The negative electrode of second variable capacitance diode is connected with the negative electrode of first variable capacitance diode; The anode of the 4th variable capacitance diode is connected with the anode of the 3rd variable capacitance diode; The negative electrode of the 4th variable capacitance diode is connected with the negative electrode of the 3rd variable capacitance diode; And/or,
Said frequency-selecting feedback network also comprises:
The 3rd electric capacity and the 6th electric capacity; Wherein, the 3rd electric capacity and second electric capacity parallel connection; The 6th electric capacity and the parallel connection of the 5th electric capacity; The capacitance size of the capacitance size of the 3rd electric capacity and second electric capacity is identical or different; The capacitance size of the capacitance size of the 6th electric capacity and the 5th electric capacity is identical or different.
Optional, said common collector amplifying circuit comprises:
First triode, first resistance, second resistance and the 7th resistance, the 4th inductance and the 5th inductance, the 9th electric capacity and the 11 electric capacity;
Wherein, the base stage of first triode is through the 5th inductance, the 7th electric capacity and the 8th capacity earth; The base stage of first triode is also through the 5th inductance, the 4th inductance and the 9th capacity earth; The collector electrode of first triode is connected with the supply voltage input, and wherein, the supply voltage input is also through the 11 capacity earth; The collector electrode of first triode is first resistance and the 9th capacity earth of logical series connection also; The emitter of first triode is through second grounding through resistance; The 7th resistance and the parallel connection of the 9th electric capacity.
Optional, said common collector amplifying circuit also comprises:
The 6th inductance, wherein, the emitter of first triode is through second resistance and the 6th inductance ground connection;
And/or,
Said common collector amplifying circuit also comprises:
The tenth electric capacity, wherein, the tenth electric capacity is parallelly connected with the 9th electric capacity; The capacitance size of the capacitance size of the tenth electric capacity and the 9th electric capacity is identical or different.
Optional, said tunable frequency-selecting phase-shift network comprises:
The 3rd resistance, the 5th variable capacitance diode, the 7th inductance and the 8th inductance, the 12 electric capacity, the 13 electric capacity, the 14 electric capacity and the 16 electric capacity;
Wherein, first transistor emitter is connected with the 5th variable capacitance diode anode with the 7th inductance through the 12 electric capacity; Also through the 3rd grounding through resistance, wherein, the 3rd resistance is also parallelly connected with the 14 electric capacity for the 5th variable capacitance diode anode; The negative electrode of the 5th variable capacitance diode is also through the 8th inductance and the 16 capacity earth; The negative electrode of the 5th variable capacitance diode also is connected with the VT input of frequency-selecting phase-shift network through the 8th inductance.
Optional, said tunable frequency-selecting phase-shift network also comprises:
The 15 electric capacity, wherein, the 5th variable capacitance diode is parallelly connected with the 15 electric capacity.
Optional, said common-base amplification circuit comprises:
Second triode, the 9th inductance and the tenth inductance, the 4th resistance, the 5th resistance and the 6th resistance, the 17 electric capacity, the 18 electric capacity, the 21 electric capacity and the 22 electric capacity;
Wherein, the emitter of second triode is connected with the negative electrode of the 5th variable capacitance diode through the 17 electric capacity; The emitter of second triode is also through the 6th resistance and the tenth inductance ground connection; The emitter of second triode also through the 6th resistance and the 22 electric capacity, is connected with first output of common-base amplification circuit; First output of common-base amplification circuit also through the 13 electric capacity, is connected with the emitter of first triode; The base stage of second triode is connected with the supply voltage input through the 5th resistance; Also through the 4th grounding through resistance, wherein, the 4th resistance is also parallelly connected with the 18 electric capacity for the base stage of second triode; The collector electrode of second triode is connected with the supply voltage input through the 9th inductance; The collector electrode of second triode is also through the 21 electric capacity and the 8th capacity earth.
Optional, said common-base amplification circuit also comprises:
The 19 electric capacity, wherein, the 19 electric capacity is parallelly connected with the 18 electric capacity, and the capacitance size of the 19 electric capacity and the capacitance size of the 18 electric capacity are identical or different;
And/or,
Said common-base amplification circuit also comprises:
The 20 electric capacity, wherein, said supply voltage input is also through the 20 capacity earth.
The present invention also provides a kind of Wireless Telecom Equipment on the other hand, comprising:
Like the described voltage-controlled oscillating circuit of above-mentioned embodiment.
Optional, said Wireless Telecom Equipment is radio reception device or wireless terminal device.
Therefore the voltage-controlled oscillating circuit of the embodiment of the invention comprises: frequency-selecting feedback network, first amplifying circuit and second amplifying circuit, wherein; First amplifying circuit can be common collector amplifying circuit or common drain amplifying circuit; Second amplifying circuit can be common-base amplification circuit or common gate amplifying circuit, and wherein, an end of frequency-selecting feedback network is connected with the input of first amplifying circuit; The other end of frequency-selecting feedback network is connected with the output of second amplifying circuit; The output of first amplifying circuit is connected with the input of second amplifying circuit, because prime is amplified the employing common collector or common drain amplifies mode, then level is amplified common base or the common gate amplification mode of adopting; Whole equivalent I/O impedance is higher after its two-stage amplifying circuit cascade; Thereby the access impedance that helps improving the positive feedback network improves the loaded Q of frequency-selecting feedback network, and then the open loop that helps reducing voltage-controlled oscillating circuit makes an uproar mutually, promotes circuit performance.
Further; If series connection one-level frequency-selecting phase-shift network between the two-stage amplifying circuit; The frequency-selecting phase-shift network helps making circuit highest-gain point to overlap zero point with phase place; And then help further improving the loaded Q at vibration frequency place, and higher loaded Q also just can obtain the higher open loop of the voltage-controlled oscillating circuit index of making an uproar mutually, further promotes circuit performance.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the sketch map of a kind of voltage-controlled oscillating circuit of providing of the embodiment of the invention;
Fig. 2 is the sketch map of the another kind of voltage-controlled oscillating circuit that provides of the embodiment of the invention;
Fig. 3 is the sketch map of the another kind of voltage-controlled oscillating circuit that provides of the embodiment of the invention;
Fig. 4 is the sketch map of the another kind of voltage-controlled oscillating circuit that provides of the embodiment of the invention;
Fig. 5 is the sketch map of the another kind of voltage-controlled oscillating circuit that provides of the embodiment of the invention;
Fig. 6 is the sketch map of the another kind of voltage-controlled oscillating circuit that provides of the embodiment of the invention;
Fig. 7 is the sketch map of a kind of Wireless Telecom Equipment of providing of the embodiment of the invention;
Fig. 8 is the sketch map of the another kind of Wireless Telecom Equipment that provides of the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of voltage-controlled oscillating circuit and Wireless Telecom Equipment, makes an uproar mutually in the hope of the open loop that reduces voltage-controlled oscillating circuit.
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Term " first " in specification of the present invention and claims and the above-mentioned accompanying drawing, " second ", " the 3rd " " 4th " etc. (if existence) are to be used to distinguish similar object, and needn't be used to describe specific order or precedence.The data that should be appreciated that such use suitably can exchanged under the situation, so as embodiments of the invention described herein for example can with except diagram here or describe those order enforcement.In addition; Term " comprises " and " having " and their any distortion; Intention is to cover not exclusive comprising; For example, comprised those steps or unit that process, method, system, product or the equipment of series of steps or unit are not necessarily limited to clearly list, but can comprise clearly do not list or for these processes, method, product or equipment intrinsic other step or unit.
Below be elaborated respectively through embodiment.
Referring to Fig. 1, the voltage-controlled oscillating circuit 100 that the embodiment of the invention provides can comprise:
Frequency-selecting feedback network 10, first amplifying circuit 20 and second amplifying circuit 30, wherein, first amplifying circuit 20 can be common collector amplifying circuit or common drain amplifying circuit, and second amplifying circuit 30 can be common-base amplification circuit or common gate amplifying circuit.
Wherein, frequency-selecting feedback network 10 is used for pulse frequency-selecting from power on and goes out oscillation frequency signal.
First amplifying circuit 20 is used for the oscillation frequency signal that frequency-selecting feedback network 10 is selected is amplified back output;
Second amplifying circuit 20, the signal that is used for the output of first amplifying circuit amplifies back output.
Frequency-selecting feedback network 10 also is used for, and amplifies back output for first amplifying circuit 20 signal feedback of second amplifying circuit, 30 outputs.
In some embodiments of the invention, frequency-selecting feedback network 10 can be the frequency-selecting feedback network of LC type frequency-selecting feedback network or other type.Wherein, The output of first amplifying circuit 20 can be connected with the input of second amplifying circuit 20; Wherein, The output of first amplifying circuit 20 can directly be connected or also can pass through other components and parts (like tunable frequency-selecting phase-shift network etc.) and connect with the input of second amplifying circuit 20, directly be connected to example with the output of first amplifying circuit 20 and the input of second amplifying circuit 20 among Fig. 1; One end of frequency-selecting feedback network 10 can directly be connected or pass through other components and parts connection with the output of second amplifying circuit 20, and the end with frequency-selecting feedback network 10 among Fig. 1 can directly be connected to example with the output of second amplifying circuit 20; The other end of frequency-selecting feedback network 10 can directly be connected with the input of first amplifying circuit 20 or connect through other components and parts, directly is connected to example with an end of frequency-selecting feedback network 10 and the input of first amplifying circuit 20 among Fig. 1.
Referring to Fig. 2, in some embodiments of the invention, voltage-controlled oscillating circuit 100 also can comprise: tunable frequency-selecting phase-shift network 40, wherein, the input of the output of first amplifying circuit 20 and second amplifying circuit can be connected through tunable frequency-selecting phase-shift network 40.
Tunable frequency-selecting phase-shift network 40 is used for the signal of first amplifying circuit, 20 outputs is carried out exporting after the phase compensation.Second amplifying circuit 30 can specifically be used for, and the signal that tunable frequency-selecting phase-shift network 40 is exported amplifies back output.
In some embodiments of the invention, tunable frequency-selecting phase-shift network 40 can be the frequency-selecting phase-shift network of LC type frequency-selecting phase-shift network or other type.
For ease of the such scheme of the better implement embodiment of the invention, provide a kind of particular circuit configurations of frequency-selecting feedback network 10 in the voltage-controlled oscillating circuit 100, first amplifying circuit 20, tunable frequency-selecting phase-shift network 40 and second amplifying circuit 30 below for example through Fig. 3 ~ Fig. 6.
Referring to Fig. 3, in some embodiments of the invention, frequency-selecting feedback network 10 can comprise:
First inductance L 1, second inductance L 2 and the 3rd inductance L 3,
The first variable capacitance diode D1 and the 3rd variable capacitance diode D3,
First capacitor C 1, second capacitor C 2, the 4th capacitor C 4, the 5th capacitor C 5, the 7th capacitor C 7 and the 8th capacitor C 8.
Wherein, the negative electrode of the plus earth of the first variable capacitance diode D1, the first variable capacitance diode D1 is connected with the VT input P1 of frequency-selecting feedback network 10 through first inductance L 1; The VT input P1 of frequency-selecting feedback network 10 is also through first capacitor C, 1 ground connection;
Wherein, the negative electrode of the 3rd variable capacitance diode D3 is connected with the negative electrode of the first variable capacitance diode D1; The anode of the 3rd variable capacitance diode D3 is also through second inductance L, 2 ground connection; The anode of the 3rd variable capacitance diode D3 is also through second capacitor C 2 and the 4th capacitor C 4 ground connection; The anode of the 3rd variable capacitance diode D3 is also through second capacitor C 2 and the 3rd inductance L 3 ground connection, and the anode of the 3rd variable capacitance diode D3 also passes through second capacitor C 2, the 5th capacitor C 5, the 7th capacitor C 7 and the 8th capacitor C 8 ground connection.
The structure that is appreciated that frequency-selecting feedback network 10 shown in Figure 3 is merely for example, and some components and parts wherein can omit or or replacement.
For example referring to Fig. 4, be that with the main distinction of voltage-controlled oscillating circuit shown in Figure 3 frequency-selecting feedback network 10, the first inductance L 1 in the voltage-controlled oscillating circuit shown in Figure 4 are replaced for the 8th resistance R 8.
Referring to Fig. 3, in some embodiments of the invention, frequency-selecting feedback network 10 also can comprise:
The 8th resistance R 8,
Second inductance L 2 and the 3rd inductance L 3,
The first variable capacitance diode D1 and the 3rd variable capacitance diode D3,
First capacitor C 1, second capacitor C 2, the 4th capacitor C 4, the 5th capacitor C 5, the 7th capacitor C 7 and the 8th capacitor C 8.
Wherein, the negative electrode of the plus earth of the first variable capacitance diode D1, the first variable capacitance diode D1 is connected with the VT input P1 of frequency-selecting feedback network 10 through the 8th resistance R 8; The VT input P1 of frequency-selecting feedback network 10 is also through first capacitor C, 1 ground connection;
Wherein, the negative electrode of the 3rd variable capacitance diode D3 is connected with the negative electrode of the first variable capacitance diode D1; The anode of the 3rd variable capacitance diode D3 is also through second inductance L, 2 ground connection; The anode of the 3rd variable capacitance diode D3 is also through second capacitor C 2 and the 4th capacitor C 4 ground connection; The anode of the 3rd variable capacitance diode D3 is also through second capacitor C 2 and the 3rd inductance L 3 ground connection, and the anode of the 3rd variable capacitance diode D3 also passes through second capacitor C 2, the 5th capacitor C 5, the 7th capacitor C 7 and the 8th capacitor C 8 ground connection.
Further, for the function of frequency-selecting feedback network 10 is improved in enhancing, also can in Fig. 3 or frequency-selecting feedback network 10 shown in Figure 4, increase some circuit devcies.
For example referring to Fig. 5 or Fig. 6, frequency-selecting feedback network 10 shown in Figure 5 on the basis of frequency-selecting feedback network 10 shown in Figure 3, has increased by the second variable capacitance diode D2, the 4th variable capacitance diode D4, the 3rd capacitor C 2 and the 6th capacitor C 6.Similarly, frequency-selecting feedback network 10 shown in Figure 6 on the basis of frequency-selecting feedback network 10 shown in Figure 4, has increased by the second variable capacitance diode D2, the 4th variable capacitance diode D4, the 3rd capacitor C 2 and the 6th capacitor C 6.Be appreciated that; Be that example describes simultaneously in frequency-selecting feedback network 10, to increase by the second variable capacitance diode D2, the 4th variable capacitance diode D4, the 3rd capacitor C 2 and the 6th capacitor C 6 among Fig. 5 and Fig. 6, also can optionally increase one or more as in the lower component as required certainly: the second variable capacitance diode D2, the 4th variable capacitance diode D4, the 3rd capacitor C 2 and the 6th capacitor C 6.
Like Fig. 5 or shown in Figure 6, frequency-selecting feedback network 10 also can comprise:
The second variable capacitance diode D2 and the 4th variable capacitance diode D4; Wherein, the anode of the second variable capacitance diode D2 is connected with the anode of the first variable capacitance diode D1; The negative electrode of the second variable capacitance diode D2 is connected with the negative electrode of the first variable capacitance diode D1; The anode of the 4th variable capacitance diode D4 is connected with the anode of the 3rd variable capacitance diode D3; The negative electrode of the 4th variable capacitance diode D4 is connected with the negative electrode of the 3rd variable capacitance diode D3.
Like Fig. 5 or shown in Figure 6, frequency-selecting feedback network 10 also can comprise:
The 3rd capacitor C 3 and the 6th capacitor C 6.
Wherein, the 3rd capacitor C 3 and 2 parallel connections of second capacitor C; The 6th capacitor C 6 and 5 parallel connections of the 5th capacitor C;
The capacitance size of the capacitance size of the 3rd capacitor C 3 and second capacitor C 2 is identical or different; The capacitance size of the capacitance size of the 6th capacitor C 6 and the 5th capacitor C 5 is identical or different.
Like Fig. 3 or shown in Figure 4, common collector amplifying circuit 20 can comprise:
The first triode Q1,
First resistance R 1, second resistance R 2 and the 7th resistance R 7;
The 4th inductance L 4 and the 5th inductance L 5;
The 9th capacitor C 9 and the 11 capacitor C 11;
Wherein, the base stage of the first triode Q1 is through the 5th inductance L 5, the 7th capacitor C 7 and the 8th capacitor C 8 ground connection; The base stage of the first triode Q1 is also through the 5th inductance L 5, the 4th inductance L 4 and the 9th capacitor C 9 ground connection; The collector electrode of the first triode Q1 is connected with supply voltage input P4, and wherein supply voltage input P4 is also through the 11 capacitor C 11 ground connection; The collector electrode of the first triode Q1 is first resistance R 1 and the 9th capacitor C 9 ground connection of logical series connection also; The emitter of the first triode Q1 is through second resistance R, 2 ground connection; The 7th resistance R 7 and 9 parallel connections of the 9th capacitor C.
Further, for the function of common collector amplifying circuit 20 is improved in enhancing, also can in Fig. 3 or common collector amplifying circuit 20 shown in Figure 4, increase some circuit devcies.For example referring to Fig. 5 or Fig. 6, be that with the main distinction of voltage-controlled oscillating circuit shown in Figure 3 common collector amplifying circuit 20 in the voltage-controlled oscillating circuit shown in Figure 5 has also increased the tenth capacitor C 10 and the 6th inductance L 6; Be with the main distinction of voltage-controlled oscillating circuit shown in Figure 4, also increased the tenth capacitor C 10 and the 6th inductance L 6 in the common collector amplifying circuit 20 in the voltage-controlled oscillating circuit shown in Figure 6.Be appreciated that; Be that example describes simultaneously in common collector amplifying circuit 20, to increase by the tenth capacitor C 10 with the 6th inductance L 6 among Fig. 5 and Fig. 6, also can optionally increase one or more as in the lower component as required certainly: the tenth capacitor C 10 and the 6th inductance L 6.
Like Fig. 5 or shown in Figure 6, common collector amplifying circuit 20 also can comprise:
The 6th inductance L 6, wherein, the emitter of the first triode Q1 is through second resistance R 2 and the 6th inductance R6 ground connection.
Like Fig. 5 or shown in Figure 6, common collector amplifying circuit 20 also can comprise:
The tenth capacitor C 10, wherein, the tenth capacitor C 10 is parallelly connected with the 9th capacitor C 9; The capacitance size of the capacitance size of the tenth capacitor C 10 and the 9th capacitor C 9 is identical or different.
Be appreciated that; The structure of Fig. 3 ~ common collector amplifying circuit 20 shown in Figure 6 is merely for example; Some components and parts wherein can omit or or the replacement, for example can also the first triode Q1 be replaced with fet, the circuit that replaces with fet repeats no more here.
Like Fig. 3 or shown in Figure 4, tunable frequency-selecting phase-shift network 40 can comprise:
The 3rd resistance R 3,
The 5th variable capacitance diode D5,
The 7th inductance L 7 and the 8th inductance L 8,
The 12 capacitor C the 12, the 13 capacitor C the 13, the 14 capacitor C 14 and the 16 capacitor C 16.
Wherein, the emitter of the first triode Q1 is connected with the anode of the 5th variable capacitance diode D5 with the 7th inductance L 7 through the 12 capacitor C 12; Also through the 3rd resistance R 3 ground connection, wherein, the 3rd resistance R 3 is also parallelly connected with the 14 capacitor C 14 for the anode of the 5th variable capacitance diode D5; The negative electrode of the 5th variable capacitance diode D5 is also through the 8th inductance L 8 and the 16 capacitor C 16 ground connection; The negative electrode of the 5th variable capacitance diode D5 also is connected with the VT input P2 of frequency-selecting phase-shift network 30 through the 8th inductance L 8.
Further, for the function of tunable frequency-selecting phase-shift network 40 is improved in enhancing, also can in Fig. 3 or tunable frequency-selecting phase-shift network 40 shown in Figure 4, increase some circuit devcies.For example referring to Fig. 5 or Fig. 6, be that with the main distinction of voltage-controlled oscillating circuit shown in Figure 3 tunable frequency-selecting phase-shift network 40 in the voltage-controlled oscillating circuit shown in Figure 5 has also increased by the 15 capacitor C 15; Be with the main distinction of voltage-controlled oscillating circuit shown in Figure 4, also increased by the 15 capacitor C 15 in the tunable frequency-selecting phase-shift network 40 in the voltage-controlled oscillating circuit shown in Figure 6.
Like Fig. 5 or shown in Figure 6, tunable frequency-selecting phase-shift network 40 also can comprise:
The 15 capacitor C 15, wherein, the 5th variable capacitance diode D5 is parallelly connected with the 15 capacitor C 15.
Like Fig. 3 or shown in Figure 4, common-base amplification circuit 30 comprises:
The second triode Q2,
The 9th inductance L 9 and the tenth inductance L 10,
The 4th resistance R 4, the 5th resistance R 5 and the 6th resistance R 6,
The 17 capacitor C the 17, the 18 capacitor C the 18, the 21 capacitor C 21 and the 22 capacitor C 22;
Wherein, the emitter of the second triode Q2 is connected with the negative electrode of the 5th variable capacitance diode D5 through the 17 capacitor C 17; The emitter of the second triode Q2 is also through the 6th resistance R 6 and the tenth inductance L 10 ground connection; The emitter of the second triode Q2 also through the 6th resistance R 6 and the 22 capacitor C 22, is connected with the first output P3 of common-base amplification circuit 30; The first output P3 of common-base amplification circuit 30 also through the 13 capacitor C 13, is connected with the emitter of the first triode Q1; The base stage of the second triode Q2 is through the 5th resistance R 5, and P4 is connected with the supply voltage input; Also through the 4th resistance R 4 ground connection, wherein, the 4th resistance R 4 is also parallelly connected with the 18 capacitor C 18 for the base stage of the second triode Q2; The collector electrode of the second triode Q2 is through the 9th inductance L 9, and P4 is connected with the supply voltage input; The collector electrode of the second triode Q2 is also through the 21 capacitor C 21 and the 8th capacitor C 8 ground connection.
Further, for the function of common-base amplification circuit 30 is improved in enhancing, also can in Fig. 3 or common-base amplification circuit 30 shown in Figure 4, increase some circuit devcies.For example referring to Fig. 5 or Fig. 6, be that with the main distinction of voltage-controlled oscillating circuit shown in Figure 3 common-base amplification circuit 30 shown in Figure 5 has also increased the 19 capacitor C 19 and the 20 capacitor C 20; Be with the main distinction of voltage-controlled oscillating circuit shown in Figure 4, also increased the 19 capacitor C 19 and the 20 capacitor C 20 in the common-base amplification circuit 30 in the voltage-controlled oscillating circuit shown in Figure 6.Be appreciated that; Be that example describes simultaneously in common-base amplification circuit 30, to increase by the 19 capacitor C 19 with the 20 capacitor C 20 among Fig. 5 and Fig. 6, also can optionally increase one or more as in the lower component as required certainly: the 19 capacitor C 19 and the 20 capacitor C 20.
Like Fig. 5 or shown in Figure 6, common-base amplification circuit 30 also comprises:
The 19 capacitor C 19, wherein, the 19 capacitor C 19 is parallelly connected with the 18 capacitor C 18, and the capacitance size of the 19 capacitor C 19 and the capacitance size of the 18 capacitor C 18 are identical or different.
Like Fig. 5 or shown in Figure 6, common-base amplification circuit 30 also comprises:
The 20 capacitor C 20, wherein, supply voltage input P4 is also through the 20 capacitor C 20 ground connection.
Be appreciated that; The structure of Fig. 3 ~ common-base amplification circuit 30 shown in Figure 6 is merely for example; Some components and parts wherein can omit or or the replacement, for example can also the second triode Q2 be replaced with fet, the circuit that replaces with fet repeats no more here.Certainly, those skilled in the art also can obtain other accompanying drawing, and other situation are not being given an example one by one here based on this thought.
Therefore the voltage-controlled oscillating circuit of the embodiment of the invention comprises: frequency-selecting feedback network, first amplifying circuit and second amplifying circuit, wherein; First amplifying circuit can be common collector amplifying circuit or common drain amplifying circuit; Second amplifying circuit can be common-base amplification circuit or common gate amplifying circuit, and wherein, an end of frequency-selecting feedback network is connected with the input of first amplifying circuit; The other end of frequency-selecting feedback network is connected with the output of second amplifying circuit; The output of first amplifying circuit is connected with the input of second amplifying circuit, because prime is amplified the employing common collector or common drain amplifies mode, then level is amplified common base or the common gate amplification mode of adopting; Whole equivalent I/O impedance is higher after its two-stage amplifying circuit cascade; Thereby the access impedance that helps improving the positive feedback network improves the loaded Q of frequency-selecting feedback network, and then the open loop that helps reducing voltage-controlled oscillating circuit makes an uproar mutually, promotes circuit performance.
Further; If series connection one-level frequency-selecting phase-shift network between the two-stage amplifying circuit; The frequency-selecting phase-shift network helps making circuit highest-gain point to overlap zero point with phase place; And then help further improving the loaded Q at vibration frequency place, and higher loaded Q also just can obtain the higher open loop of the voltage-controlled oscillating circuit index of making an uproar mutually, further promotes circuit performance.
Referring to Fig. 7, the embodiment of the invention also provides a kind of Wireless Telecom Equipment 200, wherein; Wireless Telecom Equipment 200 can comprise voltage-controlled oscillating circuit 210; Wherein, this voltage-controlled oscillating circuit 210 comprises: frequency-selecting feedback network, first amplifying circuit and second amplifying circuit, wherein; This first amplifying circuit is common collector amplifying circuit or common drain amplifying circuit, and this second amplifying circuit is common-base amplification circuit or common gate amplifying circuit; Wherein, an end of this frequency-selecting feedback network is connected with the input of this first amplifying circuit, and the other end of this frequency-selecting feedback network is connected with the output of this second amplifying circuit, and the output of this first amplifying circuit is connected with the input of second amplifying circuit;
Wherein, above-mentioned frequency-selecting feedback network is used for pulse frequency-selecting from power on and goes out oscillation frequency signal;
First amplifying circuit is used for the oscillation frequency signal that above-mentioned frequency-selecting feedback network is selected is amplified back output;
Second amplifying circuit, the signal that is used for the output of first amplifying circuit amplifies back output;
Above-mentioned frequency-selecting feedback network also is used for, and amplifies back output for first amplifying circuit signal feedback of second amplifying circuit output.
Referring to Fig. 8, in some embodiments of the invention, Wireless Telecom Equipment 200 also can comprise: the application circuit 220 that is connected with voltage-controlled oscillating circuit 210, wherein, application circuit 220 can be used for the signal of voltage-controlled oscillating circuit 210 outputs is handled.For example, the input of application circuit 220 can be connected with the output of second amplifying circuit, so that the signal of second amplifying circuit output is handled.
In some embodiments of the invention, the frequency-selecting feedback network can be the frequency-selecting feedback network of LC type frequency-selecting feedback network or other type.Wherein, The output of first amplifying circuit can be connected with the input of second amplifying circuit; Wherein, the output of first amplifying circuit can directly be connected or also can pass through other components and parts (like tunable frequency-selecting phase-shift network etc.) and connects with the input of second amplifying circuit 20; One end of frequency-selecting feedback network can directly be connected with the output of second amplifying circuit 20 or connect through other components and parts; The other end of frequency-selecting feedback network can directly be connected with the input of first amplifying circuit or connect through other components and parts.
In some embodiments of the invention, voltage-controlled oscillating circuit also can comprise:
Tunable frequency-selecting phase-shift network, wherein, the input of the output of first amplifying circuit and second amplifying circuit can be connected through tunable frequency-selecting phase-shift network.
Tunable frequency-selecting phase-shift network is used for the signal of first amplifying circuit output is carried out exporting after the phase compensation.Second amplifying circuit can specifically be used for, and the signal that tunable frequency-selecting phase-shift network is exported amplifies back output.
In some embodiments of the invention, tunable frequency-selecting phase-shift network can be the frequency-selecting phase-shift network of LC type frequency-selecting phase-shift network or other type.
In some embodiments of the invention, the frequency-selecting feedback network can comprise:
First inductance, second inductance and the 3rd inductance,
First variable capacitance diode and the 3rd variable capacitance diode;
First electric capacity, second electric capacity, the 4th electric capacity, the 5th electric capacity, the 7th electric capacity and the 8th electric capacity;
The negative electrode of wherein, the plus earth of first variable capacitance diode, first variable capacitance diode is connected with the VT input of frequency-selecting feedback network through first inductance; The VT input of said frequency-selecting feedback network is also through first capacity earth;
Wherein, the negative electrode of the 3rd variable capacitance diode is connected with the negative electrode of first variable capacitance diode; The anode of the 3rd variable capacitance diode is also through the second inductance ground connection; The anode of the 3rd variable capacitance diode is also through second electric capacity and the 4th capacity earth; The anode of the 3rd variable capacitance diode is also through second electric capacity and the 3rd inductance ground connection, and the anode of the 3rd variable capacitance diode is also through second electric capacity, the 5th electric capacity, the 7th electric capacity and the 8th capacity earth.
In other embodiment of the present invention, the frequency-selecting feedback network can comprise:
The 8th resistance;
Second inductance and the 3rd inductance;
First variable capacitance diode, the 3rd variable capacitance diode and the 4th variable capacitance diode;
First electric capacity, second electric capacity, the 4th electric capacity, the 5th electric capacity, the 7th electric capacity and the 8th electric capacity;
The negative electrode of wherein, the plus earth of first variable capacitance diode, first variable capacitance diode is connected with the VT input of frequency-selecting feedback network through the 8th resistance; The VT input of said frequency-selecting feedback network is also through first capacity earth;
Wherein, the negative electrode of the 3rd variable capacitance diode is connected with the negative electrode of first variable capacitance diode; The anode of the 3rd variable capacitance diode is also through the second inductance ground connection; The anode of the 3rd variable capacitance diode is also through second electric capacity and the 4th capacity earth; The anode of the 3rd variable capacitance diode is also through second electric capacity and the 3rd inductance ground connection, and the anode of the 3rd variable capacitance diode is also through second electric capacity, the 5th electric capacity, the 7th electric capacity and the 8th capacity earth.
In some embodiments of the invention, the frequency-selecting feedback network also comprises:
Second variable capacitance diode and the 4th variable capacitance diode; Wherein, the anode of second variable capacitance diode is connected with the anode of first variable capacitance diode; The negative electrode of second variable capacitance diode is connected with the negative electrode of first variable capacitance diode; The anode of the 4th variable capacitance diode is connected with the anode of the 3rd variable capacitance diode; The negative electrode of the 4th variable capacitance diode is connected with the negative electrode of the 3rd variable capacitance diode;
In some embodiments of the invention, the frequency-selecting feedback network also comprises:
The 3rd electric capacity and the 6th electric capacity;
Wherein, the 3rd electric capacity and second electric capacity parallel connection; The 6th electric capacity and the parallel connection of the 5th electric capacity;
The capacitance size of the capacitance size of the 3rd electric capacity and second electric capacity is identical or different; The capacitance size of the capacitance size of the 6th electric capacity and the 5th electric capacity is identical or different.
In some embodiments of the invention, common collector amplifying circuit can comprise:
First triode,
First resistance, second resistance and the 7th resistance,
The 4th inductance and the 5th inductance,
The 9th electric capacity and the 11 electric capacity,
Wherein, the base stage of first triode is through the 5th inductance, the 7th electric capacity and the 8th capacity earth; The base stage of first triode is also through the 5th inductance, the 4th inductance and the 9th capacity earth; The collector electrode of first triode is connected with the supply voltage input, and wherein, the supply voltage input is also through the 11 capacity earth; The collector electrode of first triode is first resistance and the 9th capacity earth of logical series connection also; The emitter of first triode is through second grounding through resistance; The 7th resistance and the parallel connection of the 9th electric capacity.
In some embodiments of the invention, common collector amplifying circuit also can comprise:
The 6th inductance, wherein, the emitter of first triode is through second resistance and the 6th inductance ground connection.
In some embodiments of the invention, common collector amplifying circuit also can comprise:
Said common collector amplifying circuit also comprises:
The tenth electric capacity, wherein, the tenth electric capacity is parallelly connected with the 9th electric capacity; The capacitance size of the capacitance size of the tenth electric capacity and the 9th electric capacity is identical or different.
In some embodiments of the invention, tunable frequency-selecting phase-shift network can comprise:
The 3rd resistance,
The 5th variable capacitance diode,
The 7th inductance and the 8th inductance,
The 12 electric capacity, the 13 electric capacity, the 14 electric capacity and the 16 electric capacity.
Wherein, first transistor emitter is connected with the 5th variable capacitance diode anode with the 7th inductance through the 12 electric capacity; Also through the 3rd grounding through resistance, wherein, the 3rd resistance is also parallelly connected with the 14 electric capacity for the 5th variable capacitance diode anode; The negative electrode of the 5th variable capacitance diode is also through the 8th inductance and the 16 capacity earth; The negative electrode of the 5th variable capacitance diode also is connected with the VT input of frequency-selecting phase-shift network through the 8th inductance.
In some embodiments of the invention, tunable frequency-selecting phase-shift network also can comprise:
The 15 electric capacity, wherein, the 5th variable capacitance diode is parallelly connected with the 15 electric capacity.
In some embodiments of the invention, common-base amplification circuit can comprise:
Second triode,
The 9th inductance and the tenth inductance,
The 4th resistance, the 5th resistance and the 6th resistance,
The 17 electric capacity, the 18 electric capacity, the 21 electric capacity and the 22 electric capacity.
Wherein, the emitter of second triode is connected with the negative electrode of the 5th variable capacitance diode through the 17 electric capacity; The emitter of second triode is also through the 6th resistance and the tenth inductance ground connection; The emitter of second triode also through the 6th resistance and the 22 electric capacity, is connected with first output of common-base amplification circuit; First output of common-base amplification circuit also is connected with the emitter of first triode through the 13 electric capacity; The base stage of second triode is connected with the supply voltage input through the 5th resistance; Also through the 4th grounding through resistance, wherein, the 4th resistance is also parallelly connected with the 18 electric capacity for the base stage of second triode; The collector electrode of second triode is connected with the supply voltage input through the 9th inductance; The collector electrode of second triode is also through the 21 electric capacity and the 8th capacity earth.
In some embodiments of the invention, common-base amplification circuit also can comprise:
The 19 electric capacity, wherein, the 19 electric capacity is parallelly connected with the 18 electric capacity, and the capacitance size of the 19 electric capacity and the capacitance size of the 18 electric capacity are identical or different.
In some embodiments of the invention, common-base amplification circuit also can comprise:
The 20 electric capacity, wherein, the supply voltage input is also through the 20 capacity earth.
It is understandable that; Voltage-controlled oscillating circuit 210 in the present embodiment Wireless Telecom Equipment 200 for example can be equal to or be similar to the voltage-controlled oscillating circuit of mentioning in the foregoing description 100; The concrete structure of voltage-controlled oscillating circuit 210 can also can be its distressed structure certainly shown in any width of cloth of Fig. 1 ~ Fig. 6.Wherein, Wireless Telecom Equipment 200 can be radio reception device (for example base station or access point etc.) or wireless terminal device (for example digital handset, mobile phone or personal digital assistant equipment etc.).
Therefore the voltage-controlled oscillating circuit that uses in the embodiment of the invention Wireless Telecom Equipment 200 comprises frequency-selecting feedback network, first amplifying circuit and second amplifying circuit, wherein; First amplifying circuit can be common collector amplifying circuit or common drain amplifying circuit; Second amplifying circuit can be common-base amplification circuit or common gate amplifying circuit, and wherein, an end of frequency-selecting feedback network is connected with the input of first amplifying circuit; The other end of frequency-selecting feedback network is connected with the output of second amplifying circuit; The output of first amplifying circuit is connected with the input of second amplifying circuit, because prime is amplified the employing common collector or common drain amplifies mode, then level is amplified common base or the common gate amplification mode of adopting; Whole equivalent I/O impedance is higher after its two-stage amplifying circuit cascade; Thereby the access impedance that helps improving the positive feedback network improves the loaded Q of frequency-selecting feedback network, and then the open loop that helps reducing voltage-controlled oscillating circuit makes an uproar mutually, promotes circuit performance.
Further; If series connection one-level frequency-selecting phase-shift network between the two-stage amplifying circuit; The frequency-selecting phase-shift network helps making circuit highest-gain point to overlap zero point with phase place; And then help further improving the loaded Q at vibration frequency place, and higher loaded Q also just can obtain the higher open loop of the voltage-controlled oscillating circuit index of making an uproar mutually, further promotes circuit performance.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, do not have the part that details among certain embodiment, can be referring to the associated description of other embodiment.
In several embodiment that the application provided, should be understood that the device that is disclosed can be realized through other mode.For example; Device embodiment described above only is schematically, and the for example division of said unit only is that a kind of logic function is divided; During actual the realization other dividing mode can be arranged; For example a plurality of unit or assembly can combine or can be integrated into another system, or some characteristics can ignore, or do not carry out.Another point, the coupling each other that shows or discuss or directly coupling or communication to connect can be through some interfaces, the INDIRECT COUPLING of device or unit or communication connect, and can be electrically or other form.
Said unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, promptly can be positioned at a place, perhaps also can be distributed on a plurality of NEs.Can realize the purpose of present embodiment scheme according to the needs selection some or all of unit wherein of reality.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing unit, also can be that the independent physics in each unit exists, and also can be integrated in the unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, also can adopt the form of SFU software functional unit to realize.
If said integrated unit is realized with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding; Part or all or part of of this technical scheme that technical scheme of the present invention contributes to prior art in essence in other words can come out with the embodied of software product; This computer software product is stored in the storage medium, comprises that some instructions are used so that a computer equipment (can be personal computer, server or the network equipment etc.) is carried out all or part of step of the said method of each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), portable hard drive, magnetic disc or CD.
The above, above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (12)
1. a voltage-controlled oscillating circuit is characterized in that, comprising:
Frequency-selecting feedback network, first amplifying circuit and second amplifying circuit, wherein, said first amplifying circuit is common collector amplifying circuit or common drain amplifying circuit, said second amplifying circuit is common-base amplification circuit or common gate amplifying circuit; Wherein, One end of said frequency-selecting feedback network is connected with the input of said first amplifying circuit; The other end of said frequency-selecting feedback network is connected with the output of said second amplifying circuit, and the output of said first amplifying circuit is connected with the input of second amplifying circuit;
Wherein, said frequency-selecting feedback network is used for pulse frequency-selecting from power on and goes out oscillation frequency signal;
Said first amplifying circuit is used for the oscillation frequency signal that said frequency-selecting feedback network is selected is amplified back output;
Said second amplifying circuit, the signal that is used for said first amplifying circuit output amplifies back output;
Said frequency-selecting feedback network also is used for, and amplifies back output for said first amplifying circuit signal feedback of said second amplifying circuit output.
2. voltage-controlled oscillating circuit according to claim 1 is characterized in that,
Said voltage-controlled oscillating circuit also comprises:
Tunable frequency-selecting phase-shift network, wherein, said first amplification circuit output end is connected through said tunable frequency-selecting phase-shift network with the input of second amplifying circuit;
Said tunable frequency-selecting phase-shift network is used for the signal of said first amplifying circuit output is carried out exporting after the phase compensation;
Said second amplifying circuit specifically is used for, and the signal that said tunable frequency-selecting phase-shift network is exported amplifies back output.
3. voltage-controlled oscillating circuit according to claim 1 and 2 is characterized in that,
Said frequency-selecting feedback network comprises:
First inductance, second inductance and the 3rd inductance,
First variable capacitance diode and the 3rd variable capacitance diode,
First electric capacity, second electric capacity, the 4th electric capacity, the 5th electric capacity, the 7th electric capacity and the 8th electric capacity;
The negative electrode of wherein, the plus earth of first variable capacitance diode, first variable capacitance diode is connected with the VT input of frequency-selecting feedback network through first inductance; The VT input of said frequency-selecting feedback network is also through first capacity earth;
Wherein, the negative electrode of the 3rd variable capacitance diode is connected with the negative electrode of first variable capacitance diode; The anode of the 3rd variable capacitance diode is also through the second inductance ground connection; The anode of the 3rd variable capacitance diode is also through second electric capacity and the 4th capacity earth; The anode of the 3rd variable capacitance diode is also through second electric capacity and the 3rd inductance ground connection, and the anode of the 3rd variable capacitance diode is also through second electric capacity, the 5th electric capacity, the 7th electric capacity and the 8th capacity earth.
4. voltage-controlled oscillating circuit according to claim 1 and 2 is characterized in that,
Said frequency-selecting feedback network comprises:
The 8th resistance;
Second inductance and the 3rd inductance,
First variable capacitance diode, the 3rd variable capacitance diode and the 4th variable capacitance diode,
First electric capacity, second electric capacity, the 4th electric capacity, the 5th electric capacity, the 7th electric capacity and the 8th electric capacity;
The negative electrode of wherein, the plus earth of first variable capacitance diode, first variable capacitance diode is connected with the VT input of frequency-selecting feedback network through the 8th resistance; The VT input of said frequency-selecting feedback network is also through first capacity earth;
Wherein, the negative electrode of the 3rd variable capacitance diode is connected with the negative electrode of first variable capacitance diode; The anode of the 3rd variable capacitance diode is also through the second inductance ground connection; The anode of the 3rd variable capacitance diode is also through second electric capacity and the 4th capacity earth; The anode of the 3rd variable capacitance diode is also through second electric capacity and the 3rd inductance ground connection, and the anode of the 3rd variable capacitance diode is also through second electric capacity, the 5th electric capacity, the 7th electric capacity and the 8th capacity earth.
5. voltage-controlled oscillating circuit according to claim 4 is characterized in that,
Said frequency-selecting feedback network also comprises:
Second variable capacitance diode and the 4th variable capacitance diode; Wherein, the anode of second variable capacitance diode is connected with the anode of first variable capacitance diode; The negative electrode of second variable capacitance diode is connected with the negative electrode of first variable capacitance diode; The anode of the 4th variable capacitance diode is connected with the anode of the 3rd variable capacitance diode; The negative electrode of the 4th variable capacitance diode is connected with the negative electrode of the 3rd variable capacitance diode;
And/or,
Said frequency-selecting feedback network also comprises:
The 3rd electric capacity and the 6th electric capacity;
Wherein, the 3rd electric capacity and second electric capacity parallel connection; The 6th electric capacity and the parallel connection of the 5th electric capacity;
The capacitance size of the capacitance size of the 3rd electric capacity and second electric capacity is identical or different; The capacitance size of the capacitance size of the 6th electric capacity and the 5th electric capacity is identical or different.
6. according to each described voltage-controlled oscillating circuit of claim 3 to 5, it is characterized in that,
Said common collector amplifying circuit comprises:
First triode,
First resistance, second resistance and the 7th resistance,
The 4th inductance and the 5th inductance,
The 9th electric capacity and the 11 electric capacity;
Wherein, the base stage of first triode is through the 5th inductance, the 7th electric capacity and the 8th capacity earth; The base stage of first triode is also through the 5th inductance, the 4th inductance and the 9th capacity earth; The collector electrode of first triode is connected with the supply voltage input, and wherein, the supply voltage input is also through the 11 capacity earth; The collector electrode of first triode is first resistance and the 9th capacity earth of logical series connection also; The emitter of first triode is through second grounding through resistance; The 7th resistance and the parallel connection of the 9th electric capacity.
7. voltage-controlled oscillating circuit according to claim 6 is characterized in that,
Said common collector amplifying circuit also comprises:
The 6th inductance, wherein, the emitter of first triode is through second resistance and the 6th inductance ground connection;
And/or,
Said common collector amplifying circuit also comprises:
The tenth electric capacity, wherein, the tenth electric capacity is parallelly connected with the 9th electric capacity; The capacitance size of the capacitance size of the tenth electric capacity and the 9th electric capacity is identical or different.
8. according to claim 6 or 7 described voltage-controlled oscillating circuits, it is characterized in that,
Said tunable frequency-selecting phase-shift network comprises:
The 3rd resistance,
The 5th variable capacitance diode,
The 7th inductance and the 8th inductance,
The 12 electric capacity, the 13 electric capacity, the 14 electric capacity and the 16 electric capacity;
Wherein, first transistor emitter is connected with the 5th variable capacitance diode anode with the 7th inductance through the 12 electric capacity; Also through the 3rd grounding through resistance, wherein, the 3rd resistance is also parallelly connected with the 14 electric capacity for the 5th variable capacitance diode anode; The negative electrode of the 5th variable capacitance diode is also through the 8th inductance and the 16 capacity earth; The negative electrode of the 5th variable capacitance diode also is connected with the VT input of frequency-selecting phase-shift network through the 8th inductance.
9. voltage-controlled oscillating circuit according to claim 8 is characterized in that,
Said tunable frequency-selecting phase-shift network also comprises:
The 15 electric capacity, wherein, the 5th variable capacitance diode is parallelly connected with the 15 electric capacity.
10. according to Claim 8 or 9 described voltage-controlled oscillating circuits, it is characterized in that,
Said common-base amplification circuit comprises:
Second triode,
The 9th inductance and the tenth inductance,
The 4th resistance, the 5th resistance and the 6th resistance,
The 17 electric capacity, the 18 electric capacity, the 21 electric capacity and the 22 electric capacity;
Wherein, the emitter of second triode is connected with the negative electrode of the 5th variable capacitance diode through the 17 electric capacity; The emitter of second triode is also through the 6th resistance and the tenth inductance ground connection; The emitter of second triode also through the 6th resistance and the 22 electric capacity, is connected with first output of common-base amplification circuit; First output of common-base amplification circuit also through the 13 electric capacity, is connected with the emitter of first triode; The base stage of second triode is connected with the supply voltage input through the 5th resistance; Also through the 4th grounding through resistance, wherein, the 4th resistance is also parallelly connected with the 18 electric capacity for the base stage of second triode; The collector electrode of second triode is connected with the supply voltage input through the 9th inductance; The collector electrode of second triode is also through the 21 electric capacity and the 8th capacity earth.
11. voltage-controlled oscillating circuit according to claim 10 is characterized in that,
Said common-base amplification circuit also comprises:
The 19 electric capacity, wherein, the 19 electric capacity is parallelly connected with the 18 electric capacity, and the capacitance size of the 19 electric capacity and the capacitance size of the 18 electric capacity are identical or different;
And/or,
Said common-base amplification circuit also comprises:
The 20 electric capacity, wherein, said supply voltage input is also through the 20 capacity earth.
12. a Wireless Telecom Equipment is characterized in that, comprising:
Like each described voltage-controlled oscillating circuit of claim 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210315058.6A CN102832883B (en) | 2012-08-30 | 2012-08-30 | Voltage-controlled oscillating circuit and Wireless Telecom Equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210315058.6A CN102832883B (en) | 2012-08-30 | 2012-08-30 | Voltage-controlled oscillating circuit and Wireless Telecom Equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102832883A true CN102832883A (en) | 2012-12-19 |
| CN102832883B CN102832883B (en) | 2015-08-12 |
Family
ID=47335880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210315058.6A Active CN102832883B (en) | 2012-08-30 | 2012-08-30 | Voltage-controlled oscillating circuit and Wireless Telecom Equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102832883B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452433A (en) * | 2016-11-17 | 2017-02-22 | 深圳市华讯方舟卫星通信有限公司 | Frequency synthesizer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3638223A (en) * | 1969-05-01 | 1972-01-25 | Bronson M Potter | Oscillator means for driving a resonant load |
| CN1187269A (en) * | 1995-04-19 | 1998-07-08 | 艾利森电话股份有限公司 | Multi-resmator oscillator |
| CN1269633A (en) * | 1999-10-08 | 2000-10-11 | 李希强 | Common collector-common base and common collector-common base-common collector transistor amplifier circuit |
| CN101212200A (en) * | 2006-12-27 | 2008-07-02 | 富士通媒体部品株式会社 | Oscillator |
| CN202374227U (en) * | 2011-12-15 | 2012-08-08 | 广州易迩达电子有限公司 | Radio-frequency pre-amplification circuit with automatic middle-frequency gain control function |
-
2012
- 2012-08-30 CN CN201210315058.6A patent/CN102832883B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3638223A (en) * | 1969-05-01 | 1972-01-25 | Bronson M Potter | Oscillator means for driving a resonant load |
| CN1187269A (en) * | 1995-04-19 | 1998-07-08 | 艾利森电话股份有限公司 | Multi-resmator oscillator |
| CN1269633A (en) * | 1999-10-08 | 2000-10-11 | 李希强 | Common collector-common base and common collector-common base-common collector transistor amplifier circuit |
| CN101212200A (en) * | 2006-12-27 | 2008-07-02 | 富士通媒体部品株式会社 | Oscillator |
| CN202374227U (en) * | 2011-12-15 | 2012-08-08 | 广州易迩达电子有限公司 | Radio-frequency pre-amplification circuit with automatic middle-frequency gain control function |
Non-Patent Citations (2)
| Title |
|---|
| HTTP://WENKU.BAIDU.COM/LINK?URL=4RABAUVKLZ990UF9DPST2XQGSOI-UDKA: "差分对管振荡电路", 《百度文库》, 27 October 2011 (2011-10-27) * |
| 高子斌: "稳定度高，频偏大的LC压控振荡器的设计", 《无线电通信技术》, vol. 21, no. 5, 31 October 1995 (1995-10-31) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452433A (en) * | 2016-11-17 | 2017-02-22 | 深圳市华讯方舟卫星通信有限公司 | Frequency synthesizer |
| WO2018090686A1 (en) * | 2016-11-17 | 2018-05-24 | 深圳市华讯方舟卫星通信有限公司 | Frequency synthesizer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102832883B (en) | 2015-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102577123B (en) | There is the RF buffer circuits of dynamic bias | |
| CN105322894A (en) | Envelope tracking with low frequency loss correction | |
| US10879850B2 (en) | Radio frequency power amplifier for inhibiting harmonic wave and stray, chip and communication terminal | |
| CN103731107B (en) | For the control circuit and method of the operation for controlling power amplifier | |
| CN104011998B (en) | Apparatus and method for power amplifier | |
| US9014734B2 (en) | Mobile wireless communications device with NFC coupling circuit and related methods | |
| CN104038168B (en) | Apparatus and method for buffering linearisation | |
| US9106072B2 (en) | Electrostatic discharge protection of amplifier cascode devices | |
| US9350835B2 (en) | Mobile wireless communications device with improved broadband antenna impedance matching | |
| CN105915262A (en) | Radio frequency transmitting circuit and mobile terminal | |
| CN103988422A (en) | Voltage-controlled oscillator with reduced single-ended capacitance | |
| CN103546570A (en) | Method, device and terminal for achieving network client-side cross-domain data request | |
| CN103678259B (en) | The adaptation method of a kind of page, device and terminal unit | |
| CN103631592B (en) | A kind of configuration, call method, device and equipment that shows resource | |
| WO2017197807A1 (en) | Circuit and method for adjusting frequency band of antenna, and electronic device | |
| CN112653403B (en) | Radio frequency power amplifier, chip and communication terminal for reducing load change sensitivity | |
| CN102832883A (en) | Voltage-controlled oscillating circuit and wireless communication equipment | |
| CN105704788A (en) | Communication network access method and user equipment | |
| KR102353459B1 (en) | Power amplifier circuit | |
| CN105025064A (en) | Method, device and system for downloading files | |
| CN103617036B (en) | A kind of method, apparatus and terminal device for showing plug-in unit | |
| CN102594288A (en) | Stage matching circuit of radio-frequency power amplifier | |
| CN208939904U (en) | A kind of low pressure and low power amplifier and its biasing circuit | |
| CN103684271A (en) | Device and method for improving efficiency of radio frequency power amplifier | |
| CN103618547A (en) | Amplifier with output voltage exceeding power source voltage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |