CN101461131A - Differential oscillation device, and modulator - Google Patents
Differential oscillation device, and modulator Download PDFInfo
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- CN101461131A CN101461131A CN 200780021098 CN200780021098A CN101461131A CN 101461131 A CN101461131 A CN 101461131A CN 200780021098 CN200780021098 CN 200780021098 CN 200780021098 A CN200780021098 A CN 200780021098A CN 101461131 A CN101461131 A CN 101461131A
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Abstract
Provided is a differential oscillation device, which is intended to shorten the time period from an oscillation starting time to the reversals of the phases of output signals outputted from two output terminals. The differential oscillation device comprises a differential oscillation unit (103) including a switch circuit (104) having an external input terminal at the terminal of one transistor (105), a first control signal generating circuit (101) for generating a first control signal to control the oscillation start and the oscillation stop of the differential oscillation unit (103), and a second control signal generating circuit (102) for generating a second control signal to be inputted to the terminal of that one transistor (105) of the differential oscillation unit (103). The phase relation of the collector currents to flow to the two transistors (105, 106) is determined on the basis of the second control signal, so that the phases of the output signals to be outputted from the two output terminals are reversed from those at the oscillation starting time.
Description
Technical field
The present invention relates to differential oscillation device, from the resonance that occurs in frequency, very short by the time of delay of this differential oscillation device that causes till anti-phase up to each phase place from the output signal of two lead-out terminals outputs of differential oscillator part by circuit constant decision.
Background technology
A kind of as UWB (ultra broadband) technology continues to carry out by using the pulse signal support communication or the equipment of range measurement or the development of system.In order to be the AC signal that only on the frequency band of expectation, has composition, two kinds of methods are arranged substantially to pulse signal shaping.A kind of method is only to extract the special frequency band composition by filter, and the pulse band of restriction pulse signal, and, another kind is such method, partly extract AC signal by arrange window off and on AC signal, perhaps operation is used as the pierce circuit of ac signal which to produce vibration itself off and on off and on.
As the method (partly extracting method of AC signal) that pulse signal be multiply by ac signal which by on AC signal, arranging window off and on, usually, the blender circuit that is similar to carrier communication by application class comes the output and the pulse signal of modulating oscillator circuit.And, as the method for operated oscillator circuit off and on, such method has been proposed:, come operated oscillator circuit off and on by flow through the electric current that uses transistorized oscillating circuit by switch conduction or shutoff.
Also disclose by using the next technology of paired transistor with differential mode operated oscillator circuit.Configuration in this technology shown in Figure 15.Figure 15 is the circuit block diagram that the configuration of using differential oscillation device at transistorized intermittence of the prior art is shown.
This pierce circuit is made up of the differential oscillator part of forming with current supply switch 1601, transistor 1602,1603 and resonant circuit 1,604 1605 and the first control signal generator circuit 1606.By the control signal from 1606 outputs of the first control signal generator circuit, the operating current source switch 1601 off and on.In response to voltage level with from application cycle of the control signal of the first control signal generator circuit 1606 output, 1605 vibrations (seeing patent documentation 1) of differential oscillator part.
Yet in the circuit structure of prior art, in the operation of beginning differential oscillator part 1605, two transistors begin operation simultaneously.Thus, caused small time delay after resonance takes place the frequency place by circuit constant decision, till pierce circuit begins its difference operation.
Herein, when by being that differential oscillator part 1605 is operated when exporting two potential differences between the lead-out terminal off and on by unit with the nanosecond, because appear small time of delay, so, in the pulse rise time of vibration output, from two also nonphase-inverting separately waveforms of terminal output.Therefore, under they differ from one another the condition of phase, be eliminated or synthetic at the voltage oscillation between two lead-out terminals of differential oscillator part 1605, and therefore can not obtain big output amplitude.As a result, the rising of vibration output is delayed, and therefore, when being the given pulsewidth of unit with the nanosecond, in some cases, differential oscillator part 1605 can not produce the vibration output with expected time width.
In order to address this problem, configuration shown in Figure 14 has been proposed.Figure 14 is the circuit block diagram that the configuration of use of the prior art differential oscillation device at transistorized intermittence is shown.This pierce circuit comprises current source 1501, stabilized voltage power supply 1502, resonator 1503, resonator 1504, transistor 1505 to 1508 and signal input end 1509.In this case, transistor 1505 that is connected in series and current source 1501 are carried out the function of the current supply switch 1601 shown in Figure 15.That is, when operating current supply switch 1601 shown in Figure 15 off and on by the control signal of control discontinuous operation, it finishes the function of the discontinuous operation that is equivalent to transistor 1505.Current supply switch 1601 shown in Figure 15 is also carried out the function of the constant-current source similar to the current source 1501 shown in Figure 14.
Square wave based on from signal input end 1509 inputs of the base terminal that is connected to transistor 1505 carries out this discontinuous operation.In this case, when turn-offing discontinuous operation, do not have electric current to flow through current source 1501, and standby (standby) electric current flow through the inductor between constant voltage source 1502 and resonator 1503.
Then, in case open the square wave and the discontinuous operation of input transistors 1505, standby current just is cut off, and, by the influence of this cut-out, in circuit, cause singing (ringing).By this singing as trigger, pierce circuit is operated rapidly, and, obtain short pulse duration output, as output signal (seeing non-patent literature 1) from pierce circuit
Patent documentation 1:JP-A-2005-49200
Non-patent literature 1:T.Teshirogi etc.: ' Residual-carrier free burst oscillator forautomotive UWB radar applications ', IEEE Electrics Letters, on April 28th, 2005, the 41st volume, the 9th phase.
Summary of the invention
Problem to be solved by this invention
Yet, in the circuit structure of above-mentioned prior art, use a large amount of transistors to produce singing, and problem is power consumption.And, since very big at the transistor size of the electric current source of the collector current of control chiasma type differential oscillator circuit, so because the variation of the current value that temperature causes is also very big, and the temperature characterisitic of circuit is not good.And, because the path that needs two resonators to keep standby current to flow, so, need the control of frequency characteristic.
The present invention makes considering on the problems referred to above of the prior art, and, target of the present invention is, differential oscillation device and modulator are provided, it can shorten up to the phase place from two outputs of oscillator section and reaches opposite phase respectively and small time of delay of causing, thereby temperature characterisitic is worsened.
The means of dealing with problems
In order to solve the problems of the prior art, differential oscillation device of the present invention comprises: the differential oscillator part, and it comprises pair of transistor and current source, provides external input terminals to described transistorized at least one terminal; The first control signal maker part is used to produce first control signal, with the beginning of controlling this current source with stop, and exports first control signal to this current source; And the second control signal maker part, in order to producing second control signal, controlling described transistorized output current, and export second control signal to outside input terminal.
Thus, when by will be input to the current source of differential oscillation device the time, will be input to a transistorized terminal forming differential oscillation device from second control signal of second control signal generative circuit output from first control signal of first signal generating circuit output.Therefore, the opposite polarity control signal of the polarity and second control signal appears on another transistorized terminal.The result, can obtain such effect, that is, can reduce on the frequency of determining by the circuit constant, resonance to occur after, time fine delay (after this being called as " difference operation time of delay ") of till the phase place of two output signals of different differential oscillators parts arrives opposite phase respectively, being produced.
And, in differential oscillation device of the present invention, provide external input terminals, and second control signal produces part output, with this transistorized base voltage of control to transistorized base stage.
Thus, import the transistorized base terminal that second control signal is given differential oscillation device as magnitude of voltage.Therefore, the voltage that polarity is opposite with second control signal appears on another transistorized collector terminal.As a result, can obtain the effect that time fine delay in differential vibrating is reduced.
And, in differential oscillation device of the present invention, provide external input terminals, and second control signal produces the signal of the collector current of part output control transistor to transistorized emitter terminal.
Thus, input is arrived an intermittently transistorized emitter terminal of differential oscillation device as second control signal of current value.Therefore, the electric current that polarity is opposite with second control signal appears on another transistorized emitter terminal.As a result, can obtain the effect that time fine delay in differential vibrating is reduced.
Moreover in differential oscillation device of the present invention, second control signal is the signal that is present in rising period of first control signal.
Thus, when input first control signal to the timing of current supply switch part with second control signal is applied to a transistorized terminal or has applied moment of second control signal when consistent, the phase place of adjusting differential oscillator output signal partly in the time of can be from starting of oscillation.
Moreover in differential oscillation device of the present invention, first control signal is at least once or the beginning in more times Control current source, ground and the signal of end operation.
Thus, when only by the beginning of the operation in the first control signal Control current source, this operator scheme is being effective when sleep pattern starts portable terminal.When by the beginning in the first control signal Control current source and end operation, in the rising of the modulation signal of this operator scheme in chopped pulse communication and fall time (that is, accelerating communication speed) effectively.
Modulator of the present invention comprises: differential oscillation device of the present invention; And transmit the signal generator circuit, be used to produce transmission signal, and will transmit signal and output to the first control signal maker partly and the second control signal maker part as the transmission data; Wherein, first control signal maker part and the partial response of secondary signal maker produce first control signal and second control signal respectively in transmitting signal, and differential oscillation device output transmits the modulation signal that signal produces by modulation.
Thus, because input control signal to a transistorized terminal, so, can construct such modulator, when having shortened the beginning from resonance, up to the phase place of the output of two oscillating circuits of differential oscillation device by anti-phase and time fine delay of this modulator of producing respectively.Therefore, even when obtaining output signal by the potential difference between given two lead-out terminals, even perhaps when by respectively when terminal is sorted out signal and obtained output signal, the rising of the output signal of differential oscillation device is also quickened.As a result, can produce pulsewidth is the output signal that unit is provided with the nanosecond, and can realize high-speed modulator.
Modulator of the present invention comprises: differential oscillation device; Switching part is selected in output, any in exporting from the vibration with out of phase of differential oscillator part in order to selection; And transmit the signal generator part, be used to produce transmission signal as the transmission data, and, will transmit signal and output to this output selection switching part; Wherein, output selects switching part to select in response to transmitting signal to export from the vibration of differential oscillator part, and differential oscillation device output transmits the modulation signal that signal produces by modulation.
Thus, the amplitude of output signal can be come Be Controlled by transmitting the voltage of signals value, and, also can adopt the differential oscillation device at intermittence that can access the output signal that its small time delay in differential vibrating shortened, as modulator.
Moreover in modulator of the present invention, transmission signal generator part also will transmit signal and output to the first control signal maker part and the second control signal maker part.
Thus, the amplitude and the phase place that can obtain output signal can be by transmitting the effect of voltage of signals value control, can adopt the differential oscillation device at intermittence that can access the output signal that its small time delay in differential vibrating shortened, as modulator, and, can handle modulation signal by multi valued logic.
Differential oscillation device of the present invention comprises: the differential oscillator part, it comprises the first transistor and transistor seconds, described the first transistor is connected by public with a transistor seconds terminal separately, and its two other terminal is connected intersected with each otherly, and, be connected to current source by the terminal of public connection; And two lead-out terminals.This differential oscillation device comprises: be provided for any external input terminals of terminal in the first transistor and the transistor seconds; Wherein, first control signal that is provided for the beginning of operation in Control current source and end is given the terminal of current source, and the signal that is provided for controlling the voltage between the terminal of the first transistor and transistor seconds is given external input terminals.
Thus, when and when operating the differential oscillator part off and on by importing that first control signal is given current source, import second control signal to transistorized external input terminals forming the differential oscillator part, and the opposite polarity control signal of the polarity and second control signal appears on another transistorized terminal.Thus, the differential oscillator part can shorten from the time started of resonance, time fine delay (after this being called as " difference operation time of delay ") that is produced occurring by the definite frequency of circuit constant till the phase place of two output signals arrives opposite phase respectively.As a result, compare, can under good temperature characterisitic, realize reducing of difference operation time of delay with the prior art that shortens difference operation time of delay by the circuit structure that has increased transistorized number.
And, differential oscillation device of the present invention comprises: the differential oscillator part, it comprises the first transistor and transistor seconds, described the first transistor is connected by public with a transistor seconds terminal separately, and its two other terminal is connected intersected with each otherly, and, be connected to current source by the terminal of public connection; And two lead-out terminals.This differential oscillation device comprises: first external input terminals that is provided for arbitrary terminal of the first transistor; Be provided for second external input terminals of arbitrary terminal of transistor seconds; Wherein, first control signal that is provided for the beginning of operation in Control current source and end is given the terminal of current source, second control signal that is provided for controlling the voltage between the terminal of the first transistor is given first external input terminals, and the 3rd control signal that is provided for controlling the voltage between the terminal of transistor seconds is given second external input terminals.
Thus, when when importing first control signal and operate the differential oscillator part off and on to current source, import first external input terminals of second control signal, and import second external input terminals of the 3rd control signal to transistor seconds to the first transistor of forming the differential oscillator part.As a result, difference operation is shortened time of delay, and can temperature characterisitic be worsened owing to not increasing number of transistors.
Advantage of the present invention
According to differential oscillation device of the present invention, when importing first control signal and begin discontinuous operation, import second control signal to a transistorized terminal, and the opposite polarity control signal of the polarity and second control signal also appears at another transistorized terminal.Therefore, arrive opposite phase respectively and time fine delay of causing is shortened up to the phase place of two outputs of differential oscillator part from the starting of oscillation time, and can temperature characterisitic be worsened owing to not increasing number of transistors.
Description of drawings
[Fig. 1] is the figure that the structure of the differential oscillation device in the embodiments of the invention 1 is shown.
[Fig. 2] illustrates the control signal waveform in the embodiments of the invention 1 and the figure of signal output waveform.
[Fig. 3] is the figure that another structure of the differential oscillation device in the embodiments of the invention 1 is shown.
[Fig. 4] is the figure that the structure of the differential oscillation device in the embodiments of the invention 2 is shown.
[Fig. 5] illustrates the control signal waveform in the embodiments of the invention 2 and the figure of signal output waveform.
[Fig. 6] is that the structure that the modulator in the embodiments of the invention 3 is shown is figure.
[Fig. 7] illustrates the transmission signal of the modulator in the embodiments of the invention 3 and the figure of output signal.
[Fig. 8] is the figure that the structure of the control signal generator circuit group in the embodiments of the invention 3 is shown.
[Fig. 9] is the figure that the control signal waveform in the embodiments of the invention 3 is shown.
[Figure 10] is the figure that the structure of the modulator in the embodiments of the invention 4 is shown.
[Figure 11] illustrates the control signal waveform in the embodiments of the invention 4 and the figure of signal output waveform.
[Figure 12] is the figure that another structure of the modulator in the embodiments of the invention 4 is shown.
[Figure 13] illustrates the control signal waveform in the embodiments of the invention 4 and the figure of signal output waveform.
[Figure 14] is the circuit block diagram that the configuration of differential oscillation device of the prior art is shown.
[Figure 15] is the circuit block diagram that another configuration of differential oscillation device of the prior art is shown.
[Figure 16] is the figure of another pattern that the configuration of the differential oscillation device in the embodiments of the invention 1 is shown.
[Figure 17] is the figure of another pattern that the configuration of the differential oscillation device in the embodiments of the invention 1 is shown.
[Figure 18] is the figure of another pattern that the configuration of the differential oscillation device in the embodiments of the invention 2 is shown.
[Figure 19] is the figure of another pattern that the configuration of the differential oscillation device in the embodiments of the invention 3 is shown.
[Figure 20] is the figure of another pattern that the configuration of the differential oscillation device in the embodiments of the invention 4 is shown.
[Figure 21] is the figure of another pattern that the configuration of the differential oscillation device in the embodiments of the invention 4 is shown.
The description of Reference numeral
101,602: the first control signal generator circuits
102,603: the second control signal generator circuits
103: current supply switch
104: current supply switch
105,106: transistor
107,108: lead-out terminal
109: resonant circuit
301: the three control signal generator circuits
401: the current/voltage converter circuit
601,1001,1201: transmit the signal generator circuit
604: control signal generative circuit group
801,1003: drive circuit
802,1004: amplifier circuit
803: the magnitude of voltage control circuit
804: gate circuit
805: delay circuit
1002: commutation circuit is selected in output
1005: lead-out terminal
1202: comparator circuit
1203: OR circuit
1505,1506,1507,1508: transistor
1501: current source
1502: constant voltage source
1503,1504: resonator
1509: signal input end
1601: current supply switch
1602: transistor
1603: transistor
1604: resonant circuit
1605: the differential oscillator part
1606: the first control signal generator circuits
1701: resonant circuit
Embodiment
The back will be explained embodiments of the invention with reference to the accompanying drawings.
(embodiment 1)
Fig. 1 is the figure that the structure of the differential oscillation device in the embodiments of the invention 1 is shown.In the present embodiment, hereinafter will explain the situation of operating differential oscillation device off and on.Differential oscillation device shown in Fig. 1 is made of the differential oscillator part 103, the first control signal generator circuit 101 and the second control signal generator circuit 102 that comprise current supply switch 104, transistor 105,106 and resonant circuit 109.
The first control signal generator circuit 101 is connected to current supply switch 104.And the second control signal generator circuit 102 is connected to the base terminal of transistor 105.For example, the signal exported separately of the first control signal generator circuit 101 and the second control signal generator circuit 102 is a square wave.The back will make an explanation under control signal is the hypothesis of square wave.
When from the first control signal generator circuit, 101 output control signals, operate differential oscillation device off and on.When the control signal from 102 outputs of the second control signal generator circuit outputed to the base terminal of transistor 105, the differential vibrating circuit vibrated with difference form from the moment of starting of oscillation.Thus, when beginning certainly, be in the output signal of opposite phase separately from two lead-out terminal outputs.
Fig. 2 shows the control signal waveform in the differential oscillation device shown in Fig. 1 and the sequential chart of output signal.Then, will explain below with reference to figure 1 and Fig. 2 and in embodiments of the invention 1, can produce the differential oscillation device at intermittence that short pulse causes differential vibrating with from starting of oscillation the time.
The first control signal generator circuit, 101 input control signals 201 are to the current supply switch 104 of differential oscillator part 103.By control signal 201 operating current source switch 104 off and on.In response to the cycle that applies of voltage level and control signal 201,103 vibrations of differential oscillator part.
With the rising of control signal 201 regularly synchronously, the second control signal generator circuit 102 receives control signal 202 on the base terminal of transistor 105.As shown in Figure 1, when input control signal 202 during, the skew of voltage V2 is applied to transistor 105 to base terminal.Thus, voltage V2 is set to: exceed the almost voltage of diode drop (0.6V is to 0.7V) than voltage V1.
In the period of input control signal 202, the voltage between the base-emitter terminal of increase transistor 105.Thus, in this period, increase the collector current of transistor 105.Because differential oscillator part 103 is made up of the chiasma type difference channel, so in response to control signal 202, the base voltage of transistor 106 is changed by the voltage of indication in signal 203.The phase place of the differential oscillator part 103 in the time of therefore, can being controlled at starting oscillation.
In differential oscillator part 103, the collector current of transistor 105 became greater than the collector current of transistor 106 in the period of the base terminal that control signal 202 is applied to transistor 105.In differential oscillator part 103, when input control signal 201 to the timing of current supply switch 104 with control signal 202 is applied to the base terminal of transistor 105 or has applied the timing of control signal 202 when consistent, can determine the phase place of the collector current that transistor is right by the starting of oscillation time.Therefore, owing to can in differential oscillator part 103, control the phase place of output signal 204,205, so, time fine delay (after this being called as " difference operation time of delay ") that after can reducing on the frequency of determining by the circuit constant, resonance to occur, till the phase place of two output signals 204,205 of differential oscillator part 103 arrives opposite phase respectively, is produced.
As mentioned above, during from starting of oscillation, opposite on phase place from the output signal of lead-out terminal 107 and lead-out terminal 108 outputs.And even when obtaining output signal based on the potential difference between two lead-out terminals, differential oscillator part 103 also can obtain by a relatively large margin according to the mode of not eliminated mutually when the starting of oscillation from the voltage oscillation of two terminals.As a result, quickened the rising of output signal, and thus, intermittently differential vibrating equipment can produce the output signal with the pulsewidth that is provided with nanosecond unit.
As mentioned above, because control signal 202 is input to the base terminal of a transistor 105 of differential oscillator part 103, so, can shorten difference operation time of delay.Therefore, such differential vibrating equipment can be constructed, the short pulse that produces differential vibrating when being used for can be generated from starting of oscillation.
Herein, in Fig. 1, the output of the second control signal generator circuit only is connected to the base terminal of transistor 105.In this case, as shown in Figure 3, the 3rd control signal generator circuit 301 of signal 203 shown in the output map 2 can be connected to the base terminal of transistor 106.
In this case, by the control signal 202 from 102 outputs of the second control signal generator circuit, the current potential of the base terminal of transistor 105 increases to and is higher than voltage V2, and, get back to V2 afterwards.Simultaneously, by the control signal 203 from 301 outputs of the 3rd control signal generator circuit, the current potential of the base terminal of transistor 106 is reduced to and is lower than voltage V2, and, get back to V2 afterwards.Thus, on the positive and negative both sides, determine the potential change of the base terminal of transistor 105 and transistor 106 respectively.As a result, the mode that can distinguish phases opposite determines the phase place of starting stage of vibrating, and, also can realize differential vibrating from the starting stage of vibration.
As the explanation among Fig. 1, during from starting of oscillation, opposite on phase place from the output signal of lead-out terminal 107 and lead-out terminal 108 outputs.Even when obtaining output signal based on the potential difference between two lead-out terminals, differential oscillator part also can obtain by a relatively large margin according to the mode of not eliminated mutually when the starting of oscillation from the voltage oscillation of two terminals.
As a result, quickened the rising of output signal, and thus, intermittently differential oscillation device can produce the output signal that has with the nanosecond pulsewidth that is the unit setting.According to the configuration of present embodiment, can obtain such effect independently: the precision that can improve the timing that the opposite output signal of phase place occurs.
In above-mentioned explanation,, shortened difference operation time of delay by the base terminal of input rectangle control signal to transistor 105.In this case, also can shorten difference operation time of delay to the collector terminal of transistor 105 by input rectangle control signal.
As Figure 16 and shown in Figure 17, can be configured in the structure shown in Fig. 1 and Fig. 3 respectively, making provides resonant circuit 1701 by the resonance shown in Fig. 1 and Fig. 3 is divided into two circuit.
And, in the superincumbent explanation, from the second control signal generator circuit, 102 output control signals 202, and, when control signal 202 is imported into the base terminal of transistor 105, provide offset voltage V2.In this case, can in the second control signal generator circuit 102, comprise identical functions.
(embodiment 2)
The structure chart of the differential oscillation device among the 2nd embodiment of the present invention shown in Figure 4.Embodiment 2 is with the different of embodiment 1 among Fig. 1, provides current/voltage converter circuit 401 in the back level of the second control signal generator circuit 102.Current potential in the second control signal generator circuit, 102 1 sides of current/voltage converter circuit 401 is set to be higher than voltage V1.And, can be by structure such as transistor current/voltage converter circuit 401, perhaps, by using transistor configurations current/voltage converter circuit 401 as current source.
Fig. 5 illustrates the sequential chart of the control signal and the output signal of the differential oscillation device shown in Fig. 4.Differential oscillation device among the embodiment 2 will be explained in conjunction with Fig. 4 and Fig. 5 in the back.
To be input to current/voltage converter circuit 401 from the control signal 501 of the second control signal generator circuit, 102 outputs, and, be converted into control signal 502 with current value.Input control signal 502 arrives the emitter terminal of transistor 105, and provides the variation composition of the collector current of transistor 105.
In differential oscillator part 103, the emitter terminal of transistor 105 and transistor 106 is connected to current supply switch 104.Therefore, the control signal 503 that the variation composition 502 of phase place and the collector current of transistor 105 is opposite is as the variation composition of the collector current of transistor 106 and occur.
During from starting of oscillation, can be by the variation composition 502,503 of collector current, the phase place of regulating difference channel, and, can construct difference operation short differential oscillation device time of delay.Therefore, respectively from lead-out terminal 107 and lead-out terminal 108 outputs opposite output signal 504 and output signal 505 of phase place during from starting of oscillation.Like this, can arrive the emitter terminal of a transistor 105 of differential oscillator part 103 by input control signal 501, and the differential oscillation device at intermittence of structure difference operation weak point time of delay.
In the superincumbent explanation, only be connected to the emitter terminal of transistor 105 from the control signal 501 of the second control signal generator circuit, 102 outputs through current/voltage converter circuit 401.In this case, as in embodiment 1, explaining, also can the 3rd control signal generator circuit 301 be connected to the emitter terminal of transistor 106 via current/voltage converter circuit 401 with reference to Fig. 3.By doing like this, can obtain such effect independently: the precision that can improve the timing that the opposite output signal of phase place occurs.
And, in above-mentioned explanation, will be input to the emitter terminal of transistor 105 via the control signal 501 of 401 outputs of the current/voltage converter circuit Fig. 4 from the second control signal generator circuit 102.But, even, also can obtain similar effect also exporting control signal 501 to the collector terminal period of the day from 11 p.m. to 1 a.m.In this case, all right input control signal is to the collector terminal of transistor 106.
In above-mentioned explanation, explained that the second control signal generator circuit 102 and the 3rd control signal produce the configuration that magical circuit 301 is interconnected to same terminal.In this case, be connected to the emitter terminal of transistor 105 and the collector terminal period of the day from 11 p.m. to 1 a.m that the 3rd control signal generator circuit 301 is connected to transistor 106, also can obtain similar effect even work as the second control signal generator circuit 102.Be connected under the situation of the collector terminal of transistor 105 and the emitter terminal that the 3rd control signal generator circuit 301 is connected to transistor 106 this establishment too at the second control signal generator circuit 102.
As shown in figure 18, the configuration in also can structural map 4 makes that the resonant circuit 109 among Fig. 4 is divided into two resonant circuits 1701.
(embodiment 3)
Fig. 6 is the figure that the structure of the modulator in the embodiments of the invention 3 is shown.Can construct modulator by the further additional signal generator circuit 601 that transmits of the differential oscillation device in embodiment 1.Fig. 7 illustrates the sequential chart of transmission signal, control signal and output signal in the modulator that uses the differential oscillation device among Fig. 6.To explain the operation of modulator in the present embodiment with reference to figure 6 and Fig. 7 in the back.
To be input to the control signal generative circuit group 604 who comprises the first control signal generator circuit 602 and the second control signal generator circuit 603 from the transmission signal 701 that transmits 601 outputs of signal generator circuit.Then, export control signal respectively, its magnitude of voltage changes in response to the magnitude of voltage that transmits signal 701 respectively.Therefore, can control the amplitude of the output signal of differential oscillation device arbitrarily.
, in embodiment 1, illustrated herein: by making differential oscillator part intermittent oscillation, the operation of output signal output 702 and output signal 703, and therefore, will omit their explanation herein.When the transmission voltage of signals value of exporting from transmission signal generator circuit 601 is high, from lead-out terminal 107 output signal outputs 702, and, from lead-out terminal 108 output signal outputs 703.
Fig. 8 illustrates control signal generator circuit group 604 structure, and Fig. 9 is the sequential chart of the control signal that produced of control signal generator circuit group 604.Explain the operation of control signal generator circuit group 604 embodiment below with reference to Fig. 8 and Fig. 9.
To be input to the first control signal generator circuit 602 from the transmission signal 901 that transmits 601 outputs of signal generator circuit, be converted into the signal 902 in forward position precipitous (sharp) then by drive circuit 801, and, be entered into amplifier circuit 802, export as having the voltage value signal 903 that is enough to drive current source switch 104 then.Then, input signal 903 arrives delay circuit 805, and, the signal 904 that output at any time is delayed.
And, similarly, will transmit signal 901 and be input to the second control signal generator circuit 603, be converted to the precipitous signal in forward position 902 by drive circuit 801 then, be entered into magnitude of voltage control circuit 803 then.
In this case, by amplifier circuit or limiter (limiter) circuit, construct magnitude of voltage control circuit 803.Can depend on the magnitude of voltage that transmits signal 901 and be imported into amplitude relation between the desired voltage values of signal of terminal of a transistor 105 of differential oscillator part 103, and determine which circuit should be suitable for this magnitude of voltage control circuit 803.In Fig. 9, the situation as by the structure of the amplifier circuit among Fig. 8 magnitude of voltage control circuit 803 shows the control signal 905 that its amplitude is conditioned.
Then, will be input to gate circuit 804 from the control signal 905 of magnitude of voltage control circuit 803 outputs.Thus, regulate the pulsewidth of control signal 905, and output signal 906.
Herein, the modulator of present embodiment adopts difference operation short differential oscillation device time of delay.Therefore, during from starting of oscillation, opposite separately from the phase of output signal of lead-out terminal 107 and lead-out terminal 108 outputs.When obtaining output signal 704 by the potential difference between two lead-out terminals of sensing, even when starting of oscillation, also can obtain significantly, make that the change in voltage from the output signal of two lead-out terminals is not cancelled.
As a result, can quicken the intermittently rising of the output signal of differential oscillation device, and can to produce with the nanosecond be the output signal that unit is provided with its pulsewidth.Thus, can realize the fast modulation of output signal output 704 in response to the magnitude of voltage of control signal 701.
In above-mentioned explanation, the control signal of the second control signal maker 102 is input to the base terminal of the transistor 105 among Fig. 6.In this case, when input control signal arrives the collector terminal period of the day from 11 p.m. to 1 a.m shown in the embodiment 1, can realize similar effect.
And, in above-mentioned explanation, by add transmitting the intermittence differential oscillation device of signal generating circuit in Fig. 3, and the structure modulator circuit.But, transmit signal generating circuit to differential oscillation device at intermittence shown in Figure 4 by adding similarly, also can obtain similar effect.Herein, as shown in figure 19, the structure in can structural map 6 makes that the resonant circuit 109 among Fig. 6 is divided into two resonant circuits 1701.
(embodiment 4)
Figure 10 illustrates the configuration of the modulator in the embodiments of the invention 4.Present embodiment shows such modulator, wherein, adds output and selects the output of commutation circuit to differential oscillation device.The block diagram of modulator shown in Figure 10, and, the change of the waveform among Figure 10 shown in Figure 11.
As shown in figure 10, provide transmission signal generator circuit 1001, output selection commutation circuit 1002, drive circuit 1003 and the amplifier circuit 1004 that transmits signal 1103 in order to output.Therefore, in response to the magnitude of voltage that transmits signal 1103, can control the phase place of the output signal 1101,1102 of differential oscillator part 103 arbitrarily.The processing that produces respectively from the output signal 1101,1102 of lead-out terminal 107 and lead-out terminal 108 outputs has been described in embodiment 1, and, their explanation therefore omitted herein.
At first, output signal 1101 and output signal 1102 are input to output selection commutation circuit 1002.By magnitude of voltage, control the handover operation that commutation circuit 1002 is selected in output from the transmission signal 1103 that transmits 1001 outputs of signal generator circuit.
Then, drive circuit 1003 will transmit signal 1103 and be converted to the precipitous signal in forward position 1104.Signal 1104 is input to amplifier circuit 1004, and then, being converted into to have is enough to drive the voltage value signal 1105 that commutation circuit 1002 is selected in output, then, will work outputing to output selection commutation circuit 1002.
For example, output selects commutation circuit 1002 can carry out handover operation, make when magnitude of voltage is in high level, from lead-out terminal 1005 output signal outputs 1101, and when magnitude of voltage is in low level, from lead-out terminal 1005 output signal outputs 1102, and, can change the output signal 1106 of phase place from lead-out terminal 1005 outputs in response to transmitting signal 1103.
In this case, the modulator of present embodiment adopts difference operation short differential oscillation device at intermittence time of delay.Therefore, during from starting of oscillation, opposite separately on phase place from the signal of two lead-out terminal outputs.As a result, even phase modulated can be applied to the nanosecond be the intermittent oscillation output that unit is provided with pulsewidth, and thus, can carry out High Speed Modulation.
As shown in figure 12, also can come the modulator of tectonic response multi valued logic by adding comparator circuit 1202 and OR circuit 1203.To explain this configuration below.
Figure 13 is the control signal waveform among Figure 12 and the sequential chart of signal output waveform.Export control signals 1301 from transmitting signal generator circuit 1201, and, be entered into comparator circuit 1202.When the magnitude of voltage of control signal 1301 greater than 0 the time, comparator circuit 1201 is judged to be 1, when this magnitude of voltage less than 0 the time, be judged to be 0.
Input from the control signal 1301 that transmits 1201 outputs of signal generator circuit to comparator circuit 1202, and as control signal 1302 and with its output.Below explain the operation of after input control signal 1302 arrives drive circuit 1003, carrying out, and therefore omitted their explanation herein.
On the contrary, from transmitting signal generator circuit 1201 input control signals 1301 to OR circuit 1203, and, provide control signal 1303, it is 1 true value that the signal that is input to an input terminal of OR circuit 1203 has in all code elements, and, therefore control signal 1301 is converted to control signal 1303 by OR circuit 1203.
According to the magnitude of voltage of the control signal in the commutation circuit 1302, any in the output signal output 1304,1305.Therefore, in response to the magnitude of voltage of control signal 1301, change from the amplitude and the phase place of the output signal 1306 of lead-out terminal 1005 outputs.As a result, can realize modulator in response to multi valued logic.
In response to the magnitude of voltage of control signal 1301, the handover operation of commutation circuit 1002 is selected in the output of switching the lead-out terminal that is connected to differential oscillator part 103, and, control signal 1301 is carried out phase modulated.As a result, can realize such effect independently: can control the amplitude and the phase place of output signals by transmitting signal 1301, and can carry out modulation by multi valued logic.As Figure 20 and shown in Figure 21, can construct the configuration shown in Figure 10 and Figure 12, make that the resonant circuit 109 among Figure 10 and Figure 12 is divided into two resonant circuits 1701.
In this case, from the above-mentioned explanation of embodiment 1 to embodiment 4, the pulsewidth of the square wave of control signal is provided with arbitrarily.But it is half the square wave in the cycle of frequency of oscillation that expectation should be adopted its pulsewidth.By pulsewidth is set by this way, can regulate the change of range value of the collector current of transistor 105 and transistor 106, satisfy frequency of oscillation with from starting of oscillation the time.As a result, can construct the differential oscillation device that vibrates at expected frequency can be from starting of oscillation the time, and can in modulator, adopt this differential oscillation device.
And, in the above-described embodiments, explained when the situation of using square wave as control signal.But, can use any control signal, as sine wave, cosine wave or the like with rise time.At this moment, expectation such as the control signal with rise time of sine wave, cosine wave etc. is set to equal the cycle of frequency of oscillation.
Like this, when the cycle is set to the cycle of frequency of oscillation, can regulate the change of range value of the collector current of transistor 105 and transistor 106, satisfy frequency of oscillation with from starting of oscillation the time.As a result, can construct the differential oscillation device that vibrates at expected frequency can be from starting of oscillation the time, and can in modulator, adopt this differential oscillation device.
Herein, in above-mentioned explanation, be that example has been explained transistor as NPN transistor.But, also can use the PNP transistor.At this moment, can come substitute electric power with GND, and, also can substitute GND with power supply.
Moreover, in above-mentioned explanation, in differential oscillator part 103, use transistor as active element.But also can use FET (field-effect transistor).At this moment, replace base stage, collector and emitter with grid, drain electrode and source electrode respectively.Moreover the current potential of the voltage V2 among Fig. 1 is higher than or is lower than voltage V1, and the difference between two voltage is corresponding to the threshold voltage in the FET characteristic.
And, in above-mentioned explanation, explained the situation of operating differential oscillation device off and on.In this case, when use is of the present invention, also can when the beginning differential oscillation device, quicken the rising of the output signal of differential oscillation device.
By last, explained the present invention by using accompanying drawing.But, also can realize the present invention with semiconductor integrated circuit or the system that carries out similar operation.
More than, explained the present invention in conjunction with specific embodiments in detail.Under the condition that does not break away from the spirit and scope of the present invention, various changes and modification all are conspicuous but for a person skilled in the art.
The present invention is based on Japanese patent application of submitting on June 8th, 2006 (number of patent application 2006-159455) and the Japanese patent application of submitting on May 9th, 2007 (number of patent application 2007-124720).Its content is combined to be incorporated in this.
The industry practicality
In differential oscillation device of the present invention, except in order to the control signal of controlling intermittently operated, defeated Enter control signal to the terminal of a transistor that forms differential oscillation device, and therefore, open from vibration During the beginning, the output signal of exporting from two terminals can be arranged respectively to opposite on phase place. Therefore, Even when take nanosecond as unit the pulsewidth of output signal being set, also can be from the current potential between two terminals Difference obtains its faster output signal that rises. As a result, the present invention can be used as in the high-speed radio telecommunication Differential oscillation device, modulator etc. The present invention can also be as the modulator that can respond multi valued logic Deng.
Claims (21)
1, differential oscillation device comprises:
The differential oscillator part, it comprises the first transistor and transistor seconds, described the first transistor is connected by public with a transistor seconds terminal separately, and two other terminal of described the first transistor and transistor seconds is connected intersected with each otherly, and, be connected to current source by the terminal of public connection;
Two lead-out terminals; And
Be provided for any external input terminals of terminal in the first transistor and the transistor seconds,
First control signal that will be used for the beginning of operation in Control current source and end offers the terminal of current source, and,
Second control signal that will be used to control the voltage between the terminal of the first transistor and transistor seconds offers this external input terminals.
2, differential oscillation device as claimed in claim 1, the emitter of the first transistor and transistor seconds is connected by public, and the base stage of the first transistor and transistor seconds is connected with collector electrode intersected with each otherly; And
External input terminals is offered the base stage or the collector electrode of the first transistor or transistor seconds.
3, differential oscillation device as claimed in claim 1 also comprises:
The first control signal maker part produces first control signal, and first control signal is outputed to the terminal of current source; And
The second control signal maker part produces second control signal, and second control signal is outputed to this external input terminals.
4, differential oscillation device as claimed in claim 2 offers external input terminals the base stage of the first transistor or transistor seconds; And
The base voltage of second control signal control the first transistor or transistor seconds.
5, differential oscillation device as claimed in claim 1, second control signal are the signals that is present in rising period of first control signal.
6, differential oscillation device comprises:
The differential oscillator part, it comprises the first transistor and transistor seconds, described the first transistor is connected by public with a transistor seconds terminal separately, and two other terminal of described the first transistor and transistor seconds is connected intersected with each otherly, and, be connected to current source by the terminal of public connection;
Two lead-out terminals;
Be provided for first external input terminals of arbitrary terminal of the first transistor; And
Be provided for second external input terminals of arbitrary terminal of transistor seconds,
First control signal that will be used for the beginning of operation in Control current source and end offers the terminal of current source;
Second control signal that will be used to control the voltage between the terminal of the first transistor offers first external input terminals, and,
The 3rd control signal that will be used to control the voltage between the terminal of transistor seconds offers second external input terminals.
7, differential oscillation device as claimed in claim 6, the emitter of the first transistor and transistor seconds is connected by public, and base stage is connected with collector electrode intersected with each otherly; And
First external input terminals and second external input terminals are offered the base stage or the collector electrode of the first transistor or transistor seconds respectively.
8, differential oscillation device as claimed in claim 6 also comprises:
The first control signal maker part produces first control signal, and exports the terminal of first control signal to current source; And
The second control signal maker part produces second control signal, and exports second control signal to first external input terminals; And
The 3rd control signal maker part produces the 3rd control signal, and exports the 3rd control signal to second external input terminals.
9, differential oscillation device as claimed in claim 7 offers first external input terminals the base stage of the first transistor;
Second external input terminals is offered the base stage of transistor seconds;
Second control signal and the 3rd control signal are controlled the base voltage of the first transistor and transistor seconds respectively.
10, differential oscillation device as claimed in claim 6, second control signal and the 3rd control signal are respectively the signals that is present in the rising period of first control signal.
11, as claim 1 or the described differential oscillation device of claim 6, first control signal is at least once or the beginning of the operation in more times Control current source, ground and the signal of end.
12, as claim 2 or the described differential oscillation device of claim 7, this differential oscillator partly has: the resonant circuit that is connected to the collector electrode of the first transistor and transistor seconds.
13, as claim 1 or the described differential oscillation device of claim 6, this differential oscillator partial response is in the voltage level of first control signal and pulsewidth and vibrate.
14, as claim 1 or the described differential oscillation device of claim 6, second control signal and the 3rd control signal are respectively that pulsewidth is half the square wave of cycle of oscillation.
15, as claim 1 or the described differential oscillation device of claim 6, second control signal and the 3rd control signal are respectively sine wave or the cosine waves that equals cycle of oscillation the cycle.
16, differential oscillation device as claimed in claim 1 offers external input terminals at the emitter of the first transistor or transistor seconds; And
Second control signal is the signal of the collector current of control the first transistor and transistor seconds.
17, differential oscillation device as claimed in claim 6 offers first external input terminals at the emitter of the first transistor;
Second external input terminals is offered the emitter of transistor seconds; And,
Second control signal and the 3rd control signal are controlled the collector current of the first transistor and transistor seconds respectively.
18, differential oscillation device as claimed in claim 1 also comprises:
The current/voltage converter circuit, it offers current signal by the terminal of public connection in response to second control signal.
19, modulator comprises:
As claim 3 or the described differential oscillation device of claim 8; And
Transmit the signal generator part, it produces the transmission signal as the transmission data, and should transmit signal and output to the first control signal maker partly and the second control signal maker part,
The first control signal maker part and the second control signal maker partial response produce first control signal and second control signal respectively in this transmission signal; And,
This differential oscillation device output is by modulating the modulation signal that this transmission signal produces.
20, modulator comprises:
As claim 1 or the described differential oscillation device of claim 6; And
Switching part is selected in output, any during its selection is exported from the vibration with out of phase of differential oscillator part; And
Transmit the signal generator part, it produces the transmission signal as the transmission data, and, will transmit signal and output to this output selection switching part,
This output selects switching part to select in response to this transmission signal to export from the vibration of this differential oscillator part, and,
This differential oscillation device output is by modulating the modulation signal that this transmission signal produces.
21, modulator as claimed in claim 20 also comprises:
Comparator circuit, it should transmit signal and compare with predetermined threshold, selected switching part to control this output; And
" or " logical circuit, it transmits signal application " logic and " operation to this,
This transmit signal generator part via described " or " logical circuit, should transmit signal and output to the first control signal maker partly and the second control signal maker part.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP159455/2006 | 2006-06-08 | ||
| JP2006159455 | 2006-06-08 | ||
| JP124720/2007 | 2007-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101461131A true CN101461131A (en) | 2009-06-17 |
Family
ID=40770696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200780021098 Pending CN101461131A (en) | 2006-06-08 | 2007-05-23 | Differential oscillation device, and modulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101461131A (en) |
-
2007
- 2007-05-23 CN CN 200780021098 patent/CN101461131A/en active Pending
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