TW297185B - Tuned control system - Google Patents

Abstract

A tuned system includes a tuned circuit 1 that is formed by cascading two phase shifting circuits and non-inverter circuit and a frequency control circuit 2 that includes a synchronous rectification circuit 3, a pulse converter circuit 5, a polarity distinction circuit 6 and a voltage mixed circuit 7. The synchronous rectification circuit 3 performs the synchronous rectification operation to the input signal and the pulse converter circuit 5 outputs the signal with pulse width in correspondence with a phase difference between the frequency of the input signal and a tuned frequency. The polarity distinction circuit 6 distinguishes the polarity of the phase difference, and the voltage mixed circuit 7 generates the control voltage by mixing a voltage in correspondence with a pulse that was output from the pulse converter circuit 5 for a prescribed voltage and applies the control voltage to the turned circuit 1. The tuned circuit 1 equalizes the tuned frequency with the frequency of the input signal of the tuned circuit 1 based on the control voltage that is output from the frequency control circuit 2.

Description

Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs Α7 Β7 V. Description of the invention (1)

TECHNICAL FIELD I The present invention relates to a tuning control method that allows only signals of a prescribed frequency to pass. Technical Background There are known filters or tuned circuits using various configurations such as LC resonance. For example, the super-heterodyne receiver-receiver IF amplifier is equipped with a function as a wave destroyer, while the conventional IF amplifier circuit generally uses multiple arrays of intermediate frequency transformers (I FT) and capacitors , To achieve the required frequency characteristics. For example, in the case of an AM receiver, while setting the center frequency of 455 kHz, it is set to attenuate only a specified amount when the center frequency is detuned by 9 kHz. In addition, it is also known to use a ceramic filter to replace the intermediate frequency transformer, etc., in order to achieve the required frequency persistence AM receiver. Moreover, in the conventional technology that applies the above-mentioned superheterodyne receiving method, since the filter to be tuned also includes an intermediate frequency transformer or a ceramic filter in the configuration of the intermediate frequency amplification circuit, it is not easy to include these The full volume is integrated on the semiconducting ray substrate. In addition, as for the local oscillation of the 16-channel combination of intermediate frequency amplification, the simple one can be realized by using an LC oscillator of a local oscillation transformer, and the high accuracy can be realized by using a PLL structure of crystal oscillation. In particular, when the local oscillation circuit is constituted as a PLL, it is difficult to integrate it due to the inclusion of a sine-wave vibration control type vibrator (VCO>), so part of it uses a hybrid integrated circuit (hybrid 1C). In this way, the IF amplifier circuit that acts as a filter and the local oscillation circuit that constitutes the tuning mechanism in combination with it are all included in this paper standard. The Chinese National Standard (CNS) Α4 specification (210X 297mm) (Please read the precautions on the back before filling in this page). Pack. Order

i. Description of the invention (2) The printing of the M-Consumer Cooperative by the Central Standards Bureau of the Ministry of Economic Affairs is not easy, so I hope that there will be a tuning control method that can integrate all the adjustment institutions. In addition, even if the entire existing filter or the entire circuit including the filter is integrated, only the circuit constants vary greatly, and each chip that has been split has different characteristics. In addition, the center frequency may also vary greatly due to temperature and the like. Even though the M is integrated, there is no tuning control method that can reliably achieve the desired frequency characteristics. DISCLOSURE OF THE INVENTION The present invention was created to solve such problems, and its object is to provide a novel tuning control method suitable for integration. The tuning control method of the present invention includes: a tuning path, including: two-band cascaded full-band-pass phase shift circuit; and an addition circuit, which assumes the rounding of the aforementioned phase shift circuit The feedback signal is fed back to the turn-in side of the preceding phase shift circuit, and at the same time, the feedback signal and the incoming signal are added to the front-end phase shift circuit; thus, only the signal near the specified frequency is passed; and A frequency control 18-way is connected to the tuning circuit. When a signal with a frequency near the predetermined frequency is input, the tuning frequency of the tuning circuit is matched with the phase difference between the round and the out of the tuning circuit. The frequency of the input signal of the aforementioned tuning circuit. Moreover, the phase difference between the input and output of the tuning circuit disappears by controlling M, so that the tuning frequency always follows the frequency of the round-in signal and is consistent with it. Brief description of the drawings Figure 1 is one of the tuning control methods of the implementation form of the tuning mechanism. This paper standard is applicable to the Chinese National Standard (CNS) Α4 specification (210X297 mm) 6 (Please read the precautions on the back before filling this page ) Installation · 丨 Line A7 B7 Five 'invention description (3) · Λ diagram; the second circle shows the detailed composition of the tuned ring road ring; the third circle is the phase shift of the previous segment shown in the second circle The circuit park that the road is drawn out to show; The fourth circle is the always-on circle, which shows the two systems of the in- and output-out voltages of the phase-shifted roads shown in circle 3 and the voltages that appear in the vessels and the like; circle 5 It is a diagram showing the phase diagram of the phase shift circuit shown in the second stage. The sixth diagram is a vector diagram, which shows the _input and output voltage and the phase shift diagram shown in the fifth circle. The relationship between the voltage of the capacitor and the like; the 7th series shows the image of the frequency map of the frequency control road; the 8th series is the timing chart when the frequency of the port is separated from the frequency of the key input signal; the 9th country Timing chart when the frequency of the zhu is lower than the frequency of the incoming signal; Figure 10 is the structure of a tuning mechanism that also serves as AM detection圔; The 11th 圏 uses the adjustment mechanism shown in the 10th circle, and the AM receiver ’s constellation circle; the 12th national system also serves as the FM organization ’s tuning mechanism; the 13th 囫 is shown in the 12th garden. The details of the frequency control circuit are detailed. Detailed diagram of the road; The 14th garden shows the details of the other components of the frequency control circuit. The 15th system shows the details of the other components of the frequency control circuit.

I The 16th circle shows the details of the other components of the frequency control 霣 路. This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) ---------- Install I, please first Note 1 on the back? Fill in this page again. Booking Line Printed by Beigong Consumer Cooperative, Central Bureau of Standards, Ministry of Economic Affairs 297185

The 17th Park printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs is the composition of a circle of roads; the 18th circle is the other composition of a circle of roads; FIG. 19 is a circuit diagram. The circle 20 is the composition of a road of 1 m. ; The 21st country is the other composition of a 霣 路 圔; The 22nd picture is a 霣 路 團 's composition; It is composed of a ring road; description of the invention (indicated by the phase shift that includes the LR road, the road that displays the phase shift that includes the LR circuit, and the second modification of the port that adjusts the port; the system includes The phase-shifted roadway with road display includes the phase-shifted roadway with LR roadway. The display shows the fourth modification of the tuned roadway. The system shows the non-inverted roadway connected to the front section of the phase-shifted roadway. The composition of the 24th circle is the Xiaoluyuan circle, which shows the sixth modification of the tuned Hongqiao Road; it shows the seventh modification of the tuned Jiao Road; it shows the eighth modification of the tuned Jiao Road; it shows that it contains Phase shift with LR® road "The 28th circle of the road is a road map, showing other phase shift roads with LR road Composition; The 29th circle is a tuned road, which is formed by connecting the phase shift circuit of the previous stage shown in Figure 26; The 30th drawing is a tuned circuit, which is a cascade Connected by the phase shift circuit shown in the following figure 26; and the paper standard is applicable to China National Standards (CNS & A4 specifications (210 Χ297 mm) ---------- installed --- --- Subscribe ----- d ---- Line ------ ^ --- (Please read the notes on the back before filling out this page) Α7 Β7 Printed by the Employees Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs DESCRIPTION OF THE INVENTION (5) ^ The 31st circle is a picture of the road, which is a part of the internal structure of the amphitheater. The best form of implementing the invention with Μ, one embodiment of the tuning control method of the present invention, one side This is explained with reference to Figure 1. [A. Structure and operation of the whole skeleton of the tuning mechanism] The special feature of the tuning control method of the present invention is that when a sine wave multiple of a certain frequency is input to the tuning path, Detect the phase difference between the input and output of M of the port adjustment circuit, and M will control the tuning frequency to match the _in multiple. The first circle is applicable to this issue An example of the implementation of the tuning control method is the structure of the tuning mechanism. The tuning mechanism shown in this figure includes: Tuning Road 1, which acts as a filter that passes signals near a certain frequency; and frequency control Circuit 2, uses M to carry out the control of the center frequency of the m channel. Tuning circuit 1 includes two phase shift circuits as described below; each phase shift circuit separately shifts the phase of the incoming AC signal A specified amount. In addition, the phase shift M, which combines the two tilted phase shifts into one, is set to 360 ° at the specified frequency. Also, the adjustment circuit 1 is set to be able to enter the external control signal , Set the tuning frequency arbitrarily in a certain fan garden. Frequency control "Route 2, when the phase difference between the turn-in and out of the tuning circuit 1 is shifted from 360 °, that is, in the key-in signal, it wants to pass it When the frequency of the component does not match the tuning frequency of the tuning channel, * control the synchronization frequency M to remove this deviation. In order to perform this control, the frequency control circuit 2 includes a synchronous rectifier circuit 3 and a control signal generating circuit 4. (Please read the precautions on the back before filling out this page)-Packing. The paper size of the binding book is applicable to the Chinese National Standard (CNS) Μ Specification (210X297mm) Α7 Β7 Printed by Beigong Consumer Cooperative, Central Bureau of Standards, Ministry of Economic Affairs DESCRIPTION OF THE INVENTION (6) Synchronous rectification of 霣 路 3 is to use M to synchronize the output multiple of tuned 霣 霣 路 1, and to synchronize the input multiple of tuned 霣 路 1. The wheel output of the synchronized rolling is input to the subsequent stage control signal generating circuit 4. For example * Assuming that a signal of a single frequency is input to the tuning circuit 1 * Then the above synchronous rectifier road 3 is pulled out when the tuning frequency is the same as the frequency of the input signal of the tuning circuit 1 and the phase difference between the rounds and rounds is 360 ° Complete half-wave roll-up waveform pressure, and offset from 360 ° _ out orange should be the pressure of this offset. The control signal generates a circuit 4, which includes: a pulse change circuit 5; a polar discrimination circuit 6; and a voltage synthesis circuit 7. It is used to detect the phase difference between the input wheels of the above-mentioned Tuning Road 1 while judging the magnitude and polarity of this phase difference, and generating a control multiple to remove the difference in position. The pulse conversion circuit 5 is used to wheel out a pulse train having a pulse width corresponding to the time interval of the apparent pressure component; this pressure component is equivalent to the shift from the synchronous rectifier road 3. The polarity discrimination 6 is to determine the polarity of the phase difference by using the phase relationship between the mold pressure component equivalent to the deviation from the synchronous rectification 3 and the half-wave rectification waveform. The polarity of this phase difference is used to indicate whether the frequency of the multiplier included in the multiplier should be higher or lower than the tuning frequency. The voltage synthesizing circuit 7 is used to generate a voltage corresponding to the pulse width of the signal from the pulse conversion circuit 5 while synthesizing the voltage (adding or subtracting the generated 18 voltages) * and then synthesizing Press the control signal as a control signal 1_ out. [B. Detailed structure and operation of the tuning circuit] Fig. 2 is a detailed diagram of the spectrum-modulated en route 1. Tuning Fenglu 1 series package -------- (· --installed-- (please read the precautions on the back before filling out this page). Order T line _ L-. This paper standard uses the Chinese national standard ( CNS) Μ specifications (2 丨 0> < 297mm) 10 V. Description of the invention (A7 B7 Printed by the Employees ’Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Contains: 110C and 130C of the two-inclined oranges on the moving road, at the specified frequency Carry out a total phase shift of 360 °; one minute of «Road 160, which is formed by ® resistances 162 and 164; and an addition circuit, which is a feedback of" Resistance 170 and Round-in Resistance 174 (assuming Round-in Resistance 174 Each feedback resistor having a resistance value of n times 16 of the feedback feedback resistance 170 (n-times resistance value) outputs the divided voltage of the K-channel 160 and the signal input to the input terminal 190 to the M adder in a prescribed ratio. The third drawing is a circuit diagram showing the structure of the phase shift circuit 110C. The phase shift circuit 110C includes: a lotus amplifier 112, which is one of the differential amplifiers; a variable battery 116 and a capacitor 114, which are input signals A specified amount of phase shift; an electric 118, which becomes the input resistance of the operational amplifier; a large resistance 121 and 123, which constitute the component ® «road; The resistance 120 becomes the feedback resistance of the lotus amplifier 112. The resistance 118 and the resistance 120 are set to the same resistance value. In addition, the variable resistance 116 is used, for example, a channel using FET (field-effect protection) As the resistance value, the resistance value can be changed according to the control pressure from the outside. The fourth value is a vector value, which shows the phase shift circuit 110C's in-out and out-of-round scratches, and the presence in the container. The relationship between the voltage. As shown in the circle, the relationship between the size and phase of the _ input pressure Ei and the partial pressure _ out £ ′ can be used as an equilateral triangle (ie, Μ input voltage Ei and partial voltage _ out Eo 'as Hypotenuse, with twice the pressure VC1 as the bottom surface); the amplitude of the minute 霣 KEo is independent of the frequency and is the same as the amplitude of the _ 入 倍 号, and its phase shift is shown in Figure 4 It must be expressed by 1. Also, the phase shift "The transmission function K1 of the road 110C is obtained from the following formula (1). Kl = -ai (l ~ Tis) / (l + Tis) ... (1) This paper size is applicable China National Standard (CNS) A4 specification (210X297mm) (please read the notes on the back before filling in this page). Packing. Thread 11 297185 a7 B7 Employee Consumption Du Yin's description of the invention (8) * Among them, the CR Yuan Road formed by the Yuan resistance 116 and the Yuan container 114 (tandem Yuan Road, s = j < y, at is the phase shift Yuan Road 11〇 (: gain, Di , Ai = (l + R21 / R23)> 1. However, R21 is the resistance value of the resistance 121, and the value 23 is the resistance value of the resistance 123. From the equation (1>, we can see that the phase shift road 110C is full For the band pass road, its outgoing frequency and frequency are constant without M; the phase shift amount 41 is based on the incoming signal as the direction of clockwise rotation (phase delay direction) from 180 ° to 360 °. In addition, the phase shifting path 11 ° (: the gain of greater than 1 can be broadcasted by adjusting the resistance values of R21 and R23. Similarly, Figure 5 is a circuit diagram showing the composition of the phase shifting path 130C. Phase shift The circuit 130C includes: a lotus amplifier 132, which is one of the differential amplifiers; a phase shift of the rounding multiplier by a specified period of time, a container 134 and a resistance 136; Resistance 138; resistance 141 and 143, which form the partial voltage «Road of Resistance», and the feedback resistance 140 of the resistance amplifier 132. Also, the resistance 138 and the resistance are set to the same value. The sixth dimension is a vector The circle shows the relationship between the input and output voltage of the phase-shifting circuit 130C and the voltages that appear in the container. As shown in the circle, the voltage and voltage of the input voltage Ei and the partial pressure_out £ 〇 ' It can be expressed by an equilateral triangle (ie, with the input voltage Ei and the partial pressure_out Eo 'as the hypotenuse, and the double pressure VR2 as the bottom edge); the amplitude of the output voltage Eο is independent of the frequency Same as the amplitude of the input multiplier, the phase shift amount is expressed by the 2 that is not necessary in the 6th circle. Also, the pass of the phase Xiaolu 130C The function Κ2 can be obtained from the following formula (2). K2 = az (1-T8s) / (1 + T2s) --- (2) The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) (please Read the notes on the back before filling out this page).

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J — line t. 12 V. Description of the invention (9) A7 B7 Printed by the consumer cooperation of the Central Standards Bureau of the Ministry of Economic Affairs. Among them, T2 is the time constant of the CR circuit formed by the capacitor 134 and the resistance 136, s = j < u , A2 is the gain of the phase shift circuit 130C, that is, a2 = (l + R41 / R43)> 1. However, R41 is the resistance value of the resistor 141, and R43 is the resistance value of the resistor 143. It can be seen from the equation (2) that the phase shift circuit 130C is a full band-pass circuit, and its output amplitude is constant regardless of the frequency; the phase shift amount 42 is based on the M-in signal and changes clockwise from 0 ° to 180 °. Also, the phase shift circuit 130C can broadcast a gain greater than 1 by adjusting the resistance values of R41 and R43. In this way, each of the two phase shift circuits 110C, 130C shifts the phase by a predetermined amount. As a result, as shown in FIG. 4 and FIG. 6, the phase shift amount of the entire tuning circuit 1 at a predetermined frequency becomes 360 °. At this time, the loop gain of the feedback loop derived from the two-valued phase shift circuits 110C, 130C, the voltage dividing circuit 160 and the feedback resistor 170 is set at 1 μM, thereby performing only the above-mentioned predetermined frequency component Tuning action. Also, since the output terminal 192 of the tuning circuit '1 shown in FIG. 2 is taken out, the output of the phase shift circuit 130C before entering the voltage divider circuit 160 is taken out, so that the tuning circuit 1 itself can have a gain and can be carried out. Amplify the amplitude of the doubling sign while tuning. In addition, from equations (1) and (2>), the inflammatory 1, Φ 2 shown in Figs. 4 and 6 are obtained, then the required 1, 0 2 can be obtained from the following equations (3) and (4) Φ l = tan {2ω Τι / (1-ω 2 Τ ι2)} ... (3) 0 2 = tan {2 α > Tz / (1-ω 2Ta 2)} ... (4), then ω = 1 / At the time of Τ, it is derived from the two phase shifts of the II position (please read the precautions on the back before filling in this page). Packed. The size of the paper is applicable to the Chinese National Standard (CNS) Α4 specification (210Χ297 mm) 13 mm Α7 Β7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of invention (10) The total amount of displacement becomes 360 ° and the above tuning operation is performed. In this case, 1 = 270 ° and Yan 2 = 90 °. On the one hand, such as When the frequency of the signal input to the previous phase shift circuit 110C is lower than the frequency (tuned frequency) which is the sum of the phase shift amount of the two phase shift circuits combined into 360 °, the result of adding the above 4 1 and 4 2 is It will not become 360 °. In this case, the phase shift amount 0 1 of the front phase shift circuit 110C becomes less than 270 °, and the phase shift amount 0 2 of the rear phase shift circuit 130C becomes less than 90 °. The total phase shift amount is then become Less than 360 °. At this time, if you want to make the tuning frequency close to the frequency of the actual signal, increase the above 4 1, 4 2. Specifically, as long as the change shown in Figure 2 The voltage VR1 at both ends of the resistor 116 may be increased. On the one hand, if the frequency of the signal input to the previous phase shift circuit 110C is higher than the tuning frequency, the result of adding the above-mentioned inflammations 1 and 2 will not become 360 ° In this case, the phase shift amount 0 1 of the front stage phase shift circuit 110C becomes greater than 270 °, the phase shift amount 2 of the K and the rear stage phase shift circuit 130C becomes greater than 90 °, and the total phase shift amount of M becomes greater than 360 ° At this time, if you want to make the tuning frequency close to the frequency of the actual input signal, you can reduce the absolute value of the above 4 1. The specific value * as long as the variable resistor 116 shown in Figure 2 The voltage VR1 at both ends needs to be reduced. As explained above, in the tuning circuit 1 shown in FIG. 2, two phase shift circuits lioc and 130C are connected in cascade to make it possible to change the phase shift circuit 110C. The resistance value of the variable resistor 116, so even if the input signal into the tuning channel 1 The frequency of the number is different from the tuning frequency, and it can also make the tuning frequency really match the frequency of the incoming signal. This paper standard is applicable to the Chinese National Standard Falcon (CNS) Μ specification (210Χ297mm) (please read the notes on the back before filling in this Page). Installation · Order 14 Printed by the Ministry of Economic Affairs Central Sample Falcon Bureau Employee Consumer Cooperative A7 B7 V. Description of the invention (11) In addition, in the tuning circuit 1 shown in Figure 2, due to the use of the sub-scratch circuit 160 to The attenuated signal is used as the feedback signal. At the same time, the signal before the input voltage divider circuit 160 is taken as the turn-out of the tuning circuit 1. Therefore, the tuning operation of extracting only a predetermined frequency component from the input signal can be performed. The signal is amplified as specified. Also, in the tuning circuit 1 shown in FIG. 2, since the resistance values of the resistor 118 and the resistor 120 in the phase shift circuit 110C are set to the same value, the resistances of the resistor 138 and the resistor 140 in the phase shift circuit 130 are simultaneously set The value is set to the same value, so even if the tuning frequency is changed, there will be no amplitude variation in the tuning round. Therefore, the Q of the tuning circuit 1 can be improved by increasing the resistance ratio η of the feedback resistance 170 to the input resistance 174. That is, if the loop gain has a frequency dependency, at a frequency where the gain is low, Q will not increase even if the resistance is increased, but at a frequency where the gain is high, the loop gain may exceed 1 and oscillate. Therefore, if the amplitude variation is large, the resistance ratio η cannot be set to an excessive value in order to prevent such oscillation, and the Q value of the tuning circuit 1 also becomes small. On the one hand, in the tuning circuit shown in FIG. 2, since the phase shift circuits 110C and 130C include separate circuits, even if the resistance ratio η is set to a large value, the tuning circuit 1 will not tune out Amplitude fluctuations occur, so the resistance ratio can be increased by increasing M to increase the Q value. [C. Detailed structure and operation of the frequency control circuit] FIG. 7 is a circuit diagram showing the structure of the frequency control circuit 2. It shows the detailed structure of the synchronous rolling circuit 3, the pulse conversion circuit 5, the polarity discrimination circuit 6, and the voltage synthesis circuit 7. The size of this paper is applicable to the Chinese National Standard (CNS) Α4 specification (210 X 297 mm) _ 1 R _ i Pack II —— I —__ 线 ί ί (please read the precautions on the back and fill in this page) V. Description of the invention (l2 A7 B7 Employee Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs printed synchronous rectifier circuit 3, including: analog switch (AS) 30; voltage comparator 32; level shifter (LS) 34. Yu voltage comparator 32 One side draws the output signal of the tuning circuit 1 and the other input terminal is grounded. The output of the voltage comparator 32 changes to L level when the potential of the rounding signal of the tuning circuit 1 is greater than 0V ( For example, 0V), conversely, when the potential of the output signal of the tuning circuit 1 is below 0V, it becomes the H level (for example, a prescribed positive voltage). In addition, the voltage comparator 32 has an output logic in addition to the above-mentioned round output terminal The inverting wheel output end of the inverted signal; this inverting wheel output end is connected to the polarity discrimination circuit 6 described later. The level shifter 34 performs the polarity inversion on the signal output from the voltage comparator 32 at the same time, and performs Translational displacement and will have a positive The negative voltage square wave of the mildew is used as the reference signal. The analog switch 30 operates in synchronization with the reference signal output from the level shifter 34; for example, when the rectangular wave of the reference signal is the positive voltage level , Let the pull-in signal of the tuning circuit 1 pass, and conversely, when the voltage of the polarity is low, the turn-in signal of the tuning circuit 1 is interrupted. The pulse conversion circuit 5 includes: a voltage comparator 50; and resistors 52, 54 Into a voltage divider circuit. At the input of one side of the voltage comparator 50, the output signal of the wedge-like switch 30 in the synchronous rectifier road 3; and at the input of the other side, the input is made by resistors 52 and 54 The voltage divider of the voltage divider circuit comes out. One side of the resistor 52 is grounded; and one side of the resistor 54 is connected to the power supply Vss; at this time, the resistance value of the resistor 54 is set to be greater than the resistance value of the resistor 52 (For example, about 100 times), the voltage of the inverting inverting terminal of the voltage comparator 50 is set to be slightly lower than 0V. ---------- Install-(Please read the note 4 on the back first ^ · Fill in this page again) China's national standards apply CNS) A4 specification (210X 297 mm) 16 Printed by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Α7 Β7 V. Description of the invention (13) As mentioned above, when the frequency of the signal input by the tuning circuit 1 is the same as the tuning frequency , The rounded waveform of the synchronous rectifier circuit 3 becomes a complete half-wave rectified waveform, so M will not become negative. However, when the frequency of the input signal and the tuning frequency are shifted by cadmium, the timing corresponding to this offset, The output of the synchronous rectification generates a negative voltage component, and when this negative voltage component is generated, the voltage comparator 50 in the pulse conversion circuit 5 turns to the L level. The polarity discrimination circuit 6 includes: two-valued inverter circuits 60, 61; and two-valued D-type trigger circuits 62, 63. In this embodiment, the delay circuit is formed by two inverter circuits 60, 61, and the voltage comparator 50 in the pulse conversion circuit 5 is made out of two inverter circuits 60, 61 connected in cascade. Enter the clock terminals of the trigger Xiaolu 62,63. At the D_input terminal of the D-type trigger circuit 62, a signal with the same timing and different levels as the reference signal of the synchronous rectifier circuit 3 is input. The signal input to the D input terminal is locked in synchronization with the rising edge of the pulse train pulled out from the pulse conversion circuit 5, and then input to the D input terminal of the secondary D-type circuit 63. Thereby, the secondary D-type trigger circuit 63, according to the pulse train from the voltage comparator 50 in the pulse conversion circuit 5, turns out whether a phase difference between the input and output signals of the tuning circuit 1 is greater than or less than 360 The pressure of ° H or L Xiaoping. The voltage synthesis circuit 7 includes: two-dip test state buffers 700, 702; a differential amplifier; and a variable bias® circuit. Among them, the differential amplifier includes an operational amplifier 704; and the variable bias circuit includes a variable electrical paper. The paper standard is applicable to the Chinese National Standard (CNS) Α4 specification (210 X 297 mm) 17 ^ binding ^ I line (please (Read the precautions on the back before filling this page) 5. 185 A7 B7 Description of Invention (u) Printed Block 706 by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. In the test state buffer 700, the wheel-out terminal is connected to the inverting input terminal of the differential amplifier through a resistor 710. The test state buffer 700 operates according to the signal from the output terminal Q of the trigger circuit 63 in the polarity discriminating circuit 6, for example, when the logic of this signal is H, the input signal is directly rotated, otherwise, the logic of this signal When it is L, the wheel-out terminal is made into a high-impedance state. Similarly, the test state buffer 702 has its input terminal connected to the inverting wheel output terminal of the voltage comparator 50 in the pulse conversion circuit 5, and its wheel output terminal is connected to the non-inverting differential amplifier through a resistor 708 Turn in the terminal. The test state buffer 702 operates in accordance with the signal logic of the inverse wheel out terminal of the later stage trigger circuit 63 in the polarity discrimination circuit 6, for example, when the logic of this signal is Η, the signal in turn is directly wheeled out, otherwise When the operation of this signal is L, the round out end is made into a high impedance state. The differential amplifier is to input each wheel output of the above two test state buffers 700 and 702 to the differential wheel input terminal respectively, and amplify the equal difference M at a predetermined amplification rate while performing a predetermined smooth operation M to remove high frequency components To generate control voltage. This differential amplifier, specifically, in addition to the operational amplifier 704M, includes: a feedback resistor 712, which is inserted between the inverting input terminal and the output terminal of the lotus amplifier 704; a capacitor 714, which is connected in parallel to the feedback Resistor 712; Resistor 716 is used to divide the voltage level of the signal from the test state buffer 702 in order to adjust the two rounds of the lotus amplifier 704, for which the lotus amplifier 704 is inserted Reverse _ The standard of this paper is applicable to China National Standard Falcon (CNS) Α4 specification (210X297mm) (please read the precautions on the back before filling this page) -installation-, τ Cooperative Society printed A7 B7 5. Description of the invention (15) Between the terminal and ground; capacitor 718, connected in parallel to the resistor 716; and capacitor 720, inserted between the inverting input terminal of the operational amplifier 704 and ground. The inverting inverting terminal of the lotus amplifier 704 is connected to the movable terminal of the variable resistor 706 through the resistor 722; the two fixed terminals of the variable resistor 706 are connected to the positive power supply Vdd and the negative power supply Vss Therefore, according to the bias circuit formed by the variable resistor 706, the specified bias circuit is set at the wheel-out end of the lotus amplifier. Furthermore, if the variable resistor 706 is actually formed on the semiconductor base On-chip, it can be formed by active components such as FET. This bias circuit is used when the tuning frequency of the tuning circuit 1 is the same as the frequency of the pull-in signal. It is used to set the variable resistor 116 (included in the tuning The voltage of the gate of one of the phase shift circuits 110C) in circuit 1. [C-1. When the tuning frequency is higher than the frequency of the run-in signal] Figure 8 shows that the tuning frequency of the tuning circuit 1 is higher than the input to the tuning circuit 1. Timing diagram of the frequency of the signal. If the tuning frequency is higher than the frequency of the pull-in signal of the tuning circuit 1, the sum of the phase shifts from the two phase shift circuits 110C and 130C is less than 360 °. Therefore, if observed in The two signals rounded into the tuning circuit 1 at a certain moment become the phase relationship shown in (A) and (B) of Figure 8. The voltage comparator 32 in the synchronous rectifier circuit 3 is as shown in Figure 8 ( C) As shown, it has the same frequency and phase as the tuning wheel output, And only when the voltage level of the tuning wheel is positive, a rectangular wave of L level is output. The level shifter 34, as shown in FIG. 8 (C >, uses the M inverting voltage comparator 32 At the same time, the voltage level conversion is carried out at the same time, then, as the first paper standard is applicable to the Chinese National Standard (CNS) Μ specification (210 X 297 mm), "-19-I binding ^ I Λ &. (Please read first Please pay attention to the back and fill in this page) A7 B7 printed by the consumer cooperation of the Central Standards Bureau of the Ministry of Economic Affairs V. Invention description (16) 8 As shown in Figure (E), the output has positive and negative voltage states with equal absolute values Rectangular wave. The analog switch 30, as shown in Fig. 8 (F), uses the zero crossing point of the tuning wheel as a reference, and only takes out the wheel-in signal input to the tuning circuit 1 at a predetermined time. Specifically, the input signal is taken out at a timing faster than the timing at which the upper half of the tuning wheel is taken out. As shown in FIG. 8 (G >), the voltage comparator 50 becomes yin ping only when the voltage level of the analog switch 30 is lower than 0v. The polarity judgment circuit 62 in the previous stage of the polarity discrimination 6 As shown in Figure 8 (I>, the timing of the signal rise after the round of the voltage comparator passes through the two-phase inverter circuits 60, 61 is taken in_out from the voltage comparator 32 in the synchronous rectifier road 3 After inverting the logic of the signal of the round-out terminal, it is held. The trigger circuit 63 in the latter stage is as shown in FIG. 8 (< 0 and (K), then, the output of the voltage comparator 50 is changed from L The timing of rising from H level to the H level is taken after the round of the trigger circuit 62 in the previous stage is added and maintained by M. When the tuning frequency is higher than the frequency of the multiple of the tuning circuit 1, the output terminal Q of the trigger circuit 63 in the latter stage The signal of pass H is rounded out, and the signal of pass L is output from the inverted turn-out terminal Q. Therefore, the rounded end of the test state buffer 702 becomes a high impedance state, and only the test state buffer 700 is used as a buffer Device operation (Figure 8 (L)). In addition, the drawn end of the test state 702 is transmitted through the electric bladder 7〇8 716 is grounded, so the potential of this output terminal becomes 0 V as shown in FIG. 8 (M). Furthermore, when the test state buffer 700 acts as a simple buffer, the inversion from the voltage comparator 50 occurs _The signal at the end is through the resistance. The paper standard is applicable to the Chinese National Standard (CNS) 84 specifications (210X29> 7mm) -------- One--installed ------ order ---- -I line (please read the precautions on the back and then fill out this page) A7 B7 printed by the Employee Consumer Cooperative of the Central Standard Falcon Bureau of the Ministry of Economic Affairs 5. Invention description (17) 710 and it is the inversion of the Lotus Amplifier 7〇4 _Input terminal. For example, when a positive-polarity pulse is left in the inverting input terminal of the operational amplifier 704, the voltage of the output terminal of the lotus arithmetic amplifier 704 decreases as the pulse enters. Also, in the operational amplifier 704 A capacitor 704 is connected between the inverting inverting terminal and the ground, and a small container 714 is connected between the output terminal and the inverting input terminal of the lotus dust amplifier 704, so that the output voltage is smoothed. Therefore, as shown in FIG. 8 (N), the amplifier including lotus amp 704 is smoothly lowered corresponding to the transparent After the test state, the pulse width of the pulse width of the buffer is the control voltage. Under the action of M, the control voltage fed back to the tuning circuit 1 becomes lower, causing the tuning frequency of the tuning circuit 1 to The low side changes. Repeat this control until the difference between the frequency of the input signal of the tuning circuit 1 and the cadmium of the tuning frequency disappears, and after a specified period of time, the tuning frequency is consistent with the frequency of the input signal. [C-2. When the tuning frequency is lower than the frequency of the incoming signal] Figure 9 is a timing diagram of the tuning frequency of the tuning circuit 1 being lower than the frequency of the signal rounded into the tuning circuit 1. When the tuning frequency is lower than the rounding signal of the tuning frequency 1 At the frequency, the sum of the phase shifts of the entire 130C from the two phase shift circuits lioc and the total of the 130C is greater than 360 °. Therefore, if you observe the bi-tilt signal that is tuned to the tuning circuit 1 at a certain time, it becomes Figure 9 ( A), (B) shows the phase relationship. From the voltage comparator 32 in the synchronous rectifier circuit 3, a signal synchronized with the tuning wheel of the tuning circuit 1 is output (Figure 9 (C)>, the signal is reversed and increased at the level shifter 34 while the predetermined power Horizontal displacement (Figure 9 (E)). The size of the model paper is in accordance with the Chinese National Standard (CNS) A4 specification (210X297 mm) 21 ---------- Xiang ----- 1T-- ---- ^ (Please read the precautions on the back before filling in this page) Α7 Β7 Employee's consumer cooperation with the Central Bureau of Standards of the Ministry of Economic Affairs du printed i. Invention description (18) The proposed switch 30 is only in the electrical phase shifter When the voltage level of the round-off signal of 34 is positive, let the input signal of the tuning circuit 1 pass through, so that M becomes the output waveform shown in FIG. 9 (F). Therefore, the voltage comparator in the pulse conversion circuit 5 50. It is the rounded waveform shown in FIG. 9 < F). When the voltage level becomes negative, the round is rounded to 0V, and the timing outside it is rounded to the pulse train with the specified voltage (9th). Figure (G)). The two values in the polarity discriminating circuit 6 trigger each of the small roads 62 and 63, as shown in the ninth garden (D) and (E). The 0V part of the signal of the terminal is drawn (equivalent to the L series), and the rounded terminal Q and its inverted output terminal of the trigger circuit 63 from the rear stage, as shown in Figure 9 (J), (10 respectively Signals of logic L and pass H. Each output signal of the trigger circuit 63 has a logic state opposite to that of FIG. 8, and only the test state buffer 702 in the voltage synthesis circuit 7 acts as a buffer (the first Figure 9 (L), (Μ)>. Therefore, at the non-inverting input terminal of the differential amplifier containing the operational amplifier 704, a positive polarity pulse with a specified pulse width is input, from which the differential amplifier is directed to the tuning circuit. The outgoing control voltage rises flatly (Figure 9 (N)), causing the tuning frequency of the tuning circuit 1 to change to a high level. Repeat this control * until the frequency of the remaining signal of the tuning circuit 1 and the tuning frequency Until the deviation disappears, after the specified time has passed, the tuning frequency is the same as the pull-in signal The frequency is the same. In this way, the tuning mechanism shown in Figure 1 is used to perform control such as removing the phase difference between the rounds and rounds of the tuning circuit 1, so that the tuning frequency can be controlled (please read the notes on the back first (Fill in this page again) Packing. The paper size of the binding book is applicable to the Chinese National Standard Falcon (CNS) Α4 specification (210Χ297 mm). 22 Central China Bureau of Economic Affairs Employee Consumer Cooperation Du Printed A7 __B7_ V. Invention Instructions (19) Often follow The frequency of the turn-in signal is consistent with it. Therefore, if the tuning mechanism of this embodiment is used in a super-heterodyne receiver, the tuning frequency can be easily matched to the carrier frequency of the incoming broadcast wave. The tuning circuit 1 and the frequency control circuit 2 implementing this embodiment are composed of various digital circuits such as a trigger circuit, a lotus arithmetic amplifier, a capacitor, and a small resistance. Since each element can be formed on a semiconductor substrate, the M The tuning mechanism can be integrated into a semiconductor substrate in its entire volume. [D. Example when applied to an AM receiver] Next, the case where the above-mentioned tuning mechanism is applied to an AM pastoral machine is explained. Since the frequency control circuit 2 shown in Fig. 7 includes a synchronous rectifier circuit 3, as shown in Fig. 10, the same-frequency rectified output is passed through a low-pass filter (LPF) 8, whereby the AM detection can be taken out Generally speaking, synchronizing with a reference signal to switch the round-off signal can be said to be equivalent to the mixing of the reference signal and the round-off signal. Today, it is assumed that the round-off signal is close to each other in frequency The first and second signals, and set the frequency of the first signal to fl, and the frequency of the second multiple to f2 (= fl + A f>. Also, set the frequency of the reference signal to fr. If you use this If the reference signal synchronously rectifies the input signal, it is equivalent to multiplying the multiples that can be expressed by the trigonometric function. Therefore, as a result, the sum and difference of the frequency fl and f2 of the generated signal and the reference signal fr Ingredients. Therefore, multiply the first signal in the round signal by the reference, thereby showing the frequency components of fl + fr and f bu fr; and, multiply the second signal of the round signal by the reference signal, by This shows the frequency components of fl + Af + fr and fl + Λ f-fr. This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) In H binding γ-Λ-line (please read the precautions on the back before filling this page) A7 B7 V. Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs Printed description of the invention (20) Now suppose fr = fl, then by multiplying the first signal and the reference signal by M, M shows the frequency components of 2fl and 0; and by multiplying the second signal and the reference signal by M 2f + Af, Δί. Therefore, in terms of the synchronous rectification residual, each frequency component of 2f + Af, 2fl, Δί, and 0 appears. Here, the component of frequency "0" refers to the DC component. In fact, this DC component contains a modulated signal, so after separating this DC component from its AC component (2f + ^: f, 2fl, and only taking out the DC component, it can simultaneously use synchronous rectified detection and tuning separation As mentioned above, since the signal from the low-pass filter 8 is the AM detection signal itself, there is no need to additionally install an AM detection circuit, and it can be formed into a circuit configuration. Figure 11 is a graph, which shows the use of The structure of the AM receiver of the tuning mechanism shown in the tenth circle. The high-frequency amplifying circuit 10 is used to amplify the AM wave received by the antenna 16 at a high frequency and enter the tuning circuit 1. As described above, tuning The circuit 1 controls the tuning frequency by the frequency control channel 2, so that the tuning frequency is consistent with the frequency of the AM wave that is rounded. The low-frequency amplification circuit 12 is for the round signal from the low-pass filter 8 ( AM detection signal> Amplify the low frequency, and then make a loud noise from the speaker 14. [E · Example when applied to FM receiver] Next, the case where the tuning mechanism of this embodiment is applied to an FM receiver will be explained .This implementation The frequency control circuit 2 is in the state that when the frequency of the turn-in signal of the tuning circuit 1 changes, the control voltage or change that follows the frequency change is fed back to the tuning circuit 1. Therefore, in principle, the paper size is applicable China National Standard (CNS) A4 Specification (210X 297mm) I ^ —1 ^ Pack 111 Order—111—Line—— (Please read the precautions on the back before filling in this page) 24 V. Description of the invention (21) A7 B7 Du-printed by the consumer cooperation of the Central Standards Bureau of the Ministry of Economic Affairs. This control voltage contains the frequency change of the turn-in signal of the tuning circuit 1, and the modulation signal and frequency component of the FM wave; it can be used as an FM detection signal. Fig. 12 is a diagram of the tuning mechanism that doubles as the FM detection. Fig. 13 is a circuit diagram showing the detailed structure of the frequency control circuit 2 shown in Fig. 12. The synchronous rectifier circuit 3 constituting the frequency control circuit 2, The detailed structures of the pulse conversion circuit 5 and the polarity discrimination circuit 6 are the same as the detailed structures of the circuits shown in FIG. 7; the structure of the voltage combining circuit 7A is the same as the voltage combining circuit shown in FIG. 7. 7 There are some differences. The voltage synthesis circuit 7A is connected to a first differential amplifier including a lotus amplifier 704 after the two test state buffers 700 and 702, and is similar to the voltage synthesis circuit shown in FIG. 7 7 is the same. In addition, the voltage synthesis circuit 7A connects the second differential amplifier having the same configuration as the above-mentioned first differential amplifier to the two test state buffers 700 and 702. This second The differential amplifier, specifically, includes: lotus amp 724; a feedback resistor 732 is inserted between the inverting input terminal and the output terminal of the operational amplifier 724; a capacitor 724 is connected in parallel to the feedback resistor 732; The resistor 736 is inserted between the non-inverting input terminal of the operational amplifier 724 and the ground for adjustment between the two inputs of the lotus operation amplifier 724; the capacitor 738 is connected in parallel to the electric bile 736; and the mold container 740 is It is connected between the inverting inverting terminal of the lotus operation amplifier 724 and the ground. The first differential amplifier is used to adjust the electrostatic capacity of the capacitor connected in parallel with the feedback resistor 712 to generate a control voltage so that it appears in the lotus (please read the precautions on the back before filling this page) -install The paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm). 25 Printed by the Central Standard Falcon Bureau Employee Consumer Cooperative of the Ministry of Economic Affairs. Α7 Β7. V. Invention Description (22) The voltage at the output of the operational amplifier 704 is smooth and smooth Change; in contrast * The second differential amplifier is used to adjust the electrostatic capacity of the capacitors 734, 738, 740 to remove high frequency components above 20 kHz from the mold pressure appearing at the round-off end of the operational amplifier 724. Therefore, the frequency component at about 20 kHzM, that is, the FM detection signal such as FM audio, can be taken out from the second differential amplifier. As for the overall configuration of the FM receiver including the tuning mechanism shown in Figure 13, most of the configuration of the receiver shown in Figure 11 can be directly applied (the low-pass filter 8 is not required). If various data such as characters are used as the FM modulation signal, it is sufficient to replace the lower section of the low-frequency amplification road 12 with a data processing circuit. In this way, adjust the time constant of the smoothing circuit (included in the differential amplifier of the voltage synthesis circuit 7A in the frequency control circuit 2), by which the FM modulation signal can be easily taken out, so there is no need to separately install an FM detection circuit. Simplify the circuit configuration. Also, in the tuning mechanism shown in FIG. 13, since the pulse conversion circuit 5 included in the frequency control circuit 2 is used to convert the pulse width corresponding to the phase change amount, there is no shadow of the amplitude variation W, M The limiter circuit also becomes unnecessary. [F. Other Examples of Frequency Control Circuit] Next, another configuration example of the frequency control circuit 2 shown in FIG. 1 will be described. Fig. 7 shows the voltage synthesizing circuit 7 in the frequency control circuit 2 with a detailed structure. Although the test state buffer is used, it is also possible to use components other than the M. Figure 14 shows the detailed circuit of other configuration examples of the frequency control circuit. The paper size is applicable to the Chinese National Standard (CNS) Α4 specification (210X 297mm) 26 II n order 1111 ~ line ((Please read the notes on the back first (Fill in this page again) A7 B7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy 5. Description of invention (23) The figure has the voltage synthesis circuit 7 shown in FIG. 7 replaced with a voltage synthesis circuit 7B. The voltage synthesis circuit 7B shown includes: two NOR gates 744, 746 with inverters, which use M to reverse the signals input to the two key inputs to find their logical product; the difference The dynamic amplifier, which contains the lotus amplifier 704 inside, and the bias circuit, which contains the variable battery 706. Secondly, another configuration example of the frequency control circuit shown in Fig. 1 is described. Fig. 7 The voltage synthesizing circuit 7 shown * * Although a test state buffer is used, or the voltage synthesizing circuit 7B shown in FIG. 14 is configured with an "OR", an analog switch may be used instead of these components. Figure 15 Show the frequency control circuit The circuit diagram constituted by him includes the synchronous rectifier circuit 3, the pulse conversion circuit 5, the polarity discrimination circuit 6 and the voltage combining circuit 7 shown in FIG. 7 respectively, which are replaced by the synchronous rectifier circuit 3Α, the pulse conversion circuit 5Α, and the polarity discrimination The circuit 6A and the voltage synthesis circuit 7C. The synchronous rolling circuit 3A includes an analog switch (AS) 35 and a voltage comparator 36. The inverting input terminal of this voltage comparator 36 is grounded, when the input is non-inverting When the signal of the input terminal is greater than 0V, the round output terminal becomes a positive prescribed level, otherwise, the output terminal becomes a negative prescribed voltage level when it is less than 0V. That is, using this voltage comparator 36, thereby It is possible to generate voltages of positive and negative polarities without using the level shifter 34 shown in Fig. 7. The pulse conversion circuit 5A has a configuration in which the voltage comparator 50 shown in Fig. 7 is replaced with a voltage comparator 58; This voltage comparator 58 is drawn when the Huo voltage level of the synchronous rectifier wheel wheeled in the non-inverting pull-in terminal is less than 0V. I III--'. I ((Please read the notes on the back before reading (Fill in this page) This paper size Printed at 297185 at Β7 using the Chinese National Standard Rate (CMS) Α4 specification (210XW7mm) 27 -07-Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs V. Invention description (24) A negative polarity pulse is output, and the output is synchronous rectified When the voltage level is 0V or positive polarity, the voltage level of the rounding signal becomes 0V. The polarity discrimination circuit 6A includes: a voltage comparator 64, which uses Μ to round out a pulse train having a voltage state of positive A and two polarities ; Two inverter circuits 65, 66, acting as a delay circuit; and two-value trigger circuits 67, 68. The two values in the voltage comparator 64 are rounded into the terminals, and the rounded and rounded in the two of the above voltage comparator 58 The signals of the input terminals are the same; the voltage comparator 64 turns out pulse trains with positive or negative voltage states according to the voltage comparison results of these input voltages. In addition, the two inverter circuits 65, 66 and the two trigger circuits 67, 68 correspond to the two-value inverter circuits 60, 61 and the two trigger circuits 62, 63 shown in FIG. 7, basically the same The action, however, differs in that the H corresponding to the specified positive voltage and the logic L corresponding to the specified negative voltage *. The voltage synthesis circuit 7C includes: two analog open gates (AS) 750, 752; a first inverting amplifier composed of an operational amplifier 754 and two resistors 756, 758; an operational amplifier and two resistors 764, 766 The second inverting amplifier; in order to smooth the rest of the second inverting amplifier, a capacitor 768 connected in parallel to the resistor 766, and a variable resistor 770 and a resistor connected between the positive moxibustion power supply Vdd and Vss The bias circuit formed by 772. The analog switch 750 on one side performs the ON / OFF operation of the open circuit in accordance with the electrical level of the signal output from the output terminal Q of the downstream circuit 68. When the signal output from the output terminal Q is H, that is, when a specified voltage of positive polarity is applied, the analog switch 750 will output the signal from the voltage comparator 58 in the pulse conversion mold 5A through the resistor 756 and input For the first paper size, the Chinese National Standard (CNS) Α4 specification (210X 297 mm) is applicable 28 -------- ^ — installed ------ ordered-line (please read first (Notes on the back and then fill out this page) A7 B7 Printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Invention Description (25 Inverting Amplifier. The first inverting amplifier is used to invert the signal pulled from this analog switch 750 The polarity of the voltage is reversed, and the signal inverting the polarity of this voltage is rotated into the second inverting amplifier through the resistor 762. In addition, the analog switching amplifier 752 on the other side follows the round trigger circuit 68 (in the polarity discrimination circuit 6A) The voltage level of the signal of the inverse wheel terminal is reversed, and the on / off action of the switch is performed. When the signal of the signal drawn from the inverted terminal is reversed, that is, when a positive specified voltage is applied, the analog switch 752 is Through the resistor 754, the wheel will come out of the pulse change The signal of the voltage comparator 58 in the circuit 5A is input into the second inverting amplifier. The inverting input terminal of the second inverting amplifier is connected with: one end of which is connected to the resistor 762 of the pull-out end of the first inverting amplifier; One end is connected to the resistance 772 of the bias circuit formed by the resistance 770; and one end is connected to the resistance 764 of the output end of the analog switch 752. The second inverting amplifier inverts the polarity of the added voltage again. This reversal operation simultaneously smoothes the voltage by the capacitor 768. Next, another example of the configuration of the frequency control circuit shown in the first circle will be described. FIG. 16 is a detailed circuit diagram showing another example of the configuration of the frequency control circuit; It has a configuration in which the pulse conversion circuit 5A, the polarity determination circuit 6A and the voltage synthesis circuit 7C shown in FIG. 15 are replaced with the pulse conversion circuit 5B, the polarity determination circuit 6B and the voltage synthesis circuit 7D, respectively.

The pulse conversion circuit 5B includes: a voltage comparator 59 for inputting the synchronous rectification wheel output from the analog switch 35 in the synchronous rectification circuit 3A, and its non-inverting input terminal; By adding a little below 0V, the paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X 297mm) 29 -------- (— installed ------ order ----- ^ i Line (please read the precautions on the back before filling in this page) A7 B7 5. The invention description (26) printed by the Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. And 54. This voltage comparator 59 outputs a pulse train with a voltage level of either positive or negative of the comparison result. The polarity discrimination voltage 6B includes two trigger circuits 67, 68. These trigger circuits 67, 68. It is the same as that used in the polarity discrimination circuit 6A in FIG. 15, and its buried logic H and logic L correspond to the specified positive voltage and the specified negative voltage, respectively. The voltage synthesis circuit 7D is used as a delay circuit while operating Contains: two-phase inverter circuits 780, 782, used to take out the mutual inversion The signal, the diode 784 and the small resistance 786, use M to take out the positive pulse from the front stage inverter circuit 780; the diode 788 and the resistance 790, use M to take the negative pulse from the output of the rear stage inverter circuit 782; Two test status buffers 700, 702; an inverting amplifier, which includes a lotus amplifier 760 and a resistor 766; a capacitor 768, which is connected in parallel to the resistor 766 to smooth the output voltage of the inverting amplifier; and a cadmium sleeping circuit, It is formed by a variable resistor 770 connected between the positive and negative power supplies Vdd and Vss. Here, the inverting amplifier and the bias circuit are used to perform basic grounding with those included in the voltage synthesis circuit 7C in FIG. 15 The same operation. In the 16-voltage synthesis circuit 7D shown in FIG. 16, since the positive pulse is produced by using a diode, etc., there is no need to include the first inversion of the lotus arithmetic amplifier 754 shown in FIG. 15. Amplifier. Therefore, the key out of one test state buffer 700 and the other test state buffer 702 are simply added through resistors 762 or 764, and only the inverse of the lotus amplifier 760 is used. Amplifier to invert the polarity, you can produce the required paper size. Applicable to China National Standard (CNS) A4 specification (210 X 297 mm) I ------ ^-I 餐 ------ tT- ---- (please read the notes on the back before filling this page) 30 A7

Printed by the Employee Consumption Cooperation of the Central Bureau of Economics of the Ministry of Economy V. Description of the invention (27) ^ Control voltage. [First Modification of Tuning Circuit] The tuning circuit 1 included in the tuning mechanism shown in FIG. 2 includes a CR circuit inside each phase shift circuit, but uses an internal LR circuit M instead of the phase shift of the CR circuit Circuit may be used to form a tuning circuit. Figures 17 and 18 are circuit diagrams showing other configurations including LR circuits. The phase shift circuit 110L shown in FIG. 17 replaces the CR circuit composed of the capacitor 114 and the variable resistor 116 in the phase shift circuit 110C shown in FIG. 3 with the variable resistor 116 and the inductor 117. Composed of LR circuits. In addition, the phase shift circuit 130L shown in FIG. 18 replaces the CR circuit formed by the variable resistor 136 and the II container 134 in the phase shift circuit 130C shown in FIG. 5 with the inductor 137 and the variable It is a CR circuit composed of resistor 136. The phase shift road 110L shown in FIG. 17 is equivalent to the front phase shift circuit 110C shown in the second circle, and the orange shift road 130L shown in FIG. 18 is phase shifted to the rear stage shown in FIG. 2 The circuit 130C is equivalent, so one or both of the two orange shift circuits 110C, 130C shown in FIG. 2 can be replaced with the phase shift circuits 110L, 130L. In addition, comparing the phase shift circuit 110C shown in FIG. 3 with the phase shift circuit 110L shown in the 17th turn, the direction of change of each phase shift amount when the gate voltage of the FET forming the variable resistor 116 is changed is reversed. Therefore, in order to replace the phase shift circuit 110C with the phase shift circuit 110L, it is necessary to pull the two-value pull-out terminals of the trigger circuit 63 and the test status buffer 700, 702 in Figure 7 to the Chinese paper standard. (CNS) Α4 specification (210X297 mm) _ q 1 _ (please read the notes on the back before filling in this page) Packing. Printed A7 B7 by the Consumer Cooperative of the Central Standardization Bureau of the Ministry of Economics and Development 5. Description of invention (28) Change the connection, or change the connection partner at the outgoing end of the two test state buffers 700, 702, and make some changes in the path, M will change the direction of the control voltage applied to the tuning circuit 1 from the frequency control circuit 2 and The direction of change of the tuning frequency of the tuning circuit 1 is opposite. [Second Modification of Tuning Circuit] FIG. 19 is a circuit diagram showing a second modification of the tuning circuit. The phase shift circuit 210C included in the previous stage of the tuning circuit 1A shown in the figure does not include a voltage divider circuit. Instead, the resistance value of the resistor 120 'is set to be greater than the resistance value of the resistor 118', thereby making The gain of the second-stage phase shift circuit 210C becomes greater than one. Similarly, the rear phase shifting road 230C does not include a voltage divider circuit, and instead sets the resistance value of the resistor 140 'to be larger than the resistance value of the resistor 138', thereby making the gain of the phase shift circuit 130C into Greater than 1. In addition, the output of the phase shift circuit 230C is not directly fed back to the front stage side through the voltage divider circuit. As in the tuning circuit 1 shown in FIG. 2, the output of the phase shift circuit 230C may be fed back to the input of the phase shift circuit 210C through the voltage divider circuit. The resistors 119 and 139 are provided to suppress the gain variation of the phase shift circuits 210C and 230C. The resistance value R of these resistors 119 and 139 should be set according to the following formula (5). However, in formula (5), r is the resistance value of the electric bulb 118 'or the resistor 138', and m is the resistance value of the electric nozzle 120 'or the resistor 140'. R = fflr (ml) ... (5) In addition, although the tuning circuit 1A shown in FIG. 19 is connected to the two-value phase shift circuits 210C and 230C respectively with the resistor 119 and the resistor 139, this prevents the tuning frequency from being made Amplitude changes with time, but remove the above resistance 119, 139M structure (please read the precautions on the back before filling this page).

-, 1T line paper standard is applicable to China National Standard (CNS) A4 specification (210X25) 7mm) Α7 Β7 Printed by the employees of the Central Bureau of Standards of the Ministry of Economic Affairs and printed by the cooperative. 5. Description of invention (29) can. Alternatively, only one of the resistors Π9 or 139 may be removed to form a tuning circuit. [Third Modification of Tuning Circuit] In the tuning circuit 1A shown in FIG. 19, although the CR circuit is included in each phase-shifting road, and it has been described accordingly, the LR circuit is included instead. The phase shift of the CR circuit can be used to form a tuning circuit. Fig. 20 is a circuit diagram showing the configuration of the phase shift circuit including the LR circuit; it shows the configuration that can be modulated with the previous phase shift circuit 210C of the tuning circuit 1A shown in Fig. 19. Fig. 21 is a circuit diagram showing another configuration of the phase shift circuit including the LR circuit; it shows a configuration that can be exchanged with the phase shift circuit 230C at the rear stage of the tuning circuit 1A shown in Fig. 19. [Fourth Modification of Tuning Circuit] In the first to third modifications of the tuning circuit described above, a part of the closed loop formed by connecting two phase shift circuits in cascade is connected to the round formed by the transistor A circuit (follower circuit) is also possible. Fig. 22 is a circuit diagram showing the configuration of a fourth modification of the tuning circuit. The tuning circuit 1B shown in this figure is the one before the tuning circuit 1 shown in FIG. 2 and the phase shifting circuit 110c before it is inserted into a sheave circuit 50 made of a transistor. The wheel-out circuit 50 includes an FET 152 whose drain is connected to a positive power supply Vdd, and whose source is connected to a negative power supply Vss through a resistor 54. In addition, the output circuit 50 may be formed by the emitter as far as possible, in addition to the source output circuit shown in FIG. 22. In this way, as in the previous stage such as the previous stage phase shift circuit 110C, cascade connection -------- ^-installed (please read the precautions on the back before filling this page) -s

J-line paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) 33 Printed by the Employees ’Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 297185 A7 B7 V. Description of invention (3〇) The worm made of transistor In the case of a circuit, it can compensate for the loss of the input impedance caused by the previous phase shifter 1100 and so on. Compared with the tuning circuit 1 shown in FIG. 2, the resistance value of the feedback resistor 170 and the input circuit 174 can be increased. In particular, when the tuning circuit 1B and the like are to be integrated on a semiconductor substrate, in order to reduce the resistance value of the feedback resistor 170 and the like, it is necessary to expand the area occupied by the device, so the output circuit is connected to make the resistance of the feedback resistor 170 and the like It is ideal to increase the value to a certain degree. , [Fifth Modification of Tuning Circuit] Although the tuning circuit 1 shown in FIG. 2 sets the phase shift amount of the combined two phase shift circuits 110C and 130C to 360 °, the phase shift circuit 110C connected in cascade And 130C, connect a non-inverting circuit that does not shift the phase to form a tuning circuit. Fig. 23 is a circuit diagram showing the configuration of the tuning circuit 1C connecting the non-inverting circuit 350 to the front stage of the two-value phase shift circuit. The phase shift circuits 310C and 330C in the tuning circuit 1C shown in this figure are except for the output terminal of the operational amplifier 112 or 132 where the voltage dividing circuit is not connected, and the rest have the phases shown in FIG. 2 The shift circuits 110C and 130C have the same structure, and the transfer function and phase shift amount are also the same as the phase shift circuits 110C and 130C. However, in equation (1>, at = l; equation (2> a2 = l. In addition, the non-inverting circuit 350 has a prescribed gain determined by the resistance ratio of the two slap resistors 354, 356. Two phase shift circuits 310C , 330C, the gains all become 1. Therefore, in the tuning circuit 1C shown in FIG. 23, the gain of the non-inverting circuit 350 is set to a value greater than 1, instead of gaining gain by each phase shift circuit, In order to compensate for the losses caused by the closed loop, the prescribed tuning action is carried out. The paper standard is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) BU 4 --- J: ------- ^ --Installed ------ ordered ----- ^ i line (please read the notes on the back before filling in this page) 34 Printed A7 ^ _ B7_ by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs (31) ο [Sixth Modification of Tuning Circuit] FIG. 24 is a circuit diagram showing a sixth modification of the tuning circuit; it is connected to the phase shift circuit 310C ′ to replace the subsequent phase shift circuit shown in FIG. 23. 310C, and connected to the phase inverting circuit 180 instead of the non-inverting circuit 150. The phase inverting circuit 180 has two blocking resistors 184, 1 The resistance ratio of 86 determines one of the specified amplification ratios. By increasing the resistance value of the resistance 186 to be greater than the resistance value of the resistance 184, M obtains a gain greater than 1. At the specified frequency, since two phase shift circuits 310C are used, The phase is shifted by 180 °, and the phase is inverted by the phase inverting circuit 180, so as a whole, the phase is turned once to make the phase shift amount become 360 °, and a predetermined tuning operation is performed. [T Modification] The tuning road 1D shown in FIG. 24 exemplifies the two-phase phase shift circuit 310C connected in cascade, but the tuning operation can also be performed when the two-phase phase shift circuit 330C is connected in cascade as shown in FIG. 25. The tuning circuits 1C, ID, and 1E shown in FIGS. 23 to 25 all constitute two phase shift circuits including CR1I, but they may also constitute a phase shift circuit including LR «. For example, in In the tuning circuit 1C shown in FIG. 23, the front-stage phase shift circuit 310C is replaced with a phase shift circuit that omits the voltage divider from the phase shift circuit 110L shown in FIG. 17, and the rear-stage phase shift circuit is replaced with a second Figure 18 shows the phase-shifted road 130L omit the phase shift of the voltage divider circuit Road can also be 0 [The eighth modification of the tuning circuit] This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm). Binding ^ Line (please read the precautions on the back before filling this page) 35 Ministry of Economic Affairs Printed A7 B7 by Beigong Consumer Cooperative of Central Bureau of Standards. 5. Description of invention (32). Tuning Fenglu 1F shown in Figure 26 includes: two phase-shifting Fenglu 410C, 430, which respectively make the input AC The phase of the signal is shifted by a specified amount, whereby a total of 360 ° phase shift is performed at the specified frequency; a non-inverted circuit 450, which does not change the phase of the phase shift circuit and M specifies the amplification factor to amplify the output; a voltage divider circuit 160 is composed of resistors 162 and 164 provided in the rear stage of the non-inverting circuit 450; and a feedback resistor 170. The previous-stage phase shift circuit 410C uses the FET 412 to generate the signals in phase and in phase with the shot signal, and then synthesizes these two values through the capacitor 414 or the variable resistor 416 as a round-out signal. In addition, at least one of the FET 412 and the FET 432 described later may be replaced with a bipolar transistor. If it is assumed that the time constant of the CR circuit formed by the capacitor 414 and the variable resistor 416 is Ti, the transfer function of the phase-shifted path 410C can be directly applied to K1 shown in (1> (but, 31 < 1), The phase shift Dong is also equal to the amount of phase shift shown in Figure 2. On the one hand, the rear-stage phase shift circuit 430C uses the FET 432 to generate the signals in phase and in phase with the drawn signal, and then synthesizes this through the resistor 436 or the capacitor 434 If the time constant of the CR circuit formed by the capacitor 434 and the variable resistor 436 is T2, then the transfer function of the phase shift circuit 430C can be directly applied to K2 shown in equation (2) (However, a2 < l), the phase shift amount is also equal to the phase shift amount of the phase shift circuit 130C shown in FIG. 2. The non-inverting circuit 450 includes: an FET 452, which is connected to the drain and positive The connection resistance between the power supply is 454, and the connection resistance between the source and the ground. This paper standard is applicable to the Chinese National Standard Falcon (CNS) A4 specification (210X 297mm) ---------- ^ ----- -1T ----- 7 丨 ^ (Please read the precautions on the back before filling in this page) 36 A7 B7 Central Standard of Ministry of Economic Affairs Printed by the Bureau ’s Consumer Cooperatives 5. Description of invention (33) 456;-Transistor 458, whose base is connected to the drain of FET 452, and its collector is connected to the source of FET 452 via resistor 460; and the resistor 462, using M plus an appropriate bias voltage on PET 452. FET 452, which is an inverted signal from the drain when the gate turns in an AC signal. Also, transistor 458, which is connected to the base key When the signal is reversed, a signal whose phase is reversed is output from the collector. When the phase of the signal input to the gate of the FET 452 is used as a reference, the in-phase signal is output from the collector, and then from the non-inverting circuit 450 This signal is sent out. By the two phase circuits 410C and 430C as a whole, the total phase shift amount becomes 360 ° at a predetermined frequency, and at this time, the gain of the non-inverting circuit 4 50 is adjusted so that the loop gain becomes 1 or less By this, the predetermined tuning operation is maintained. [Ninth Modification of Tuning Circuit] Although the tuning circuit 1F shown in FIG. 26 includes a CR circuit inside each phase shift circuit 410, 430C, the use of resistors and LR circuit formed by inductor (M replaces CR circuit The phase shift circuit, M can also constitute a tuning circuit. Figure 27 shows the circuit diagram of the phase shift circuit including the LR circuit; it shows the structure that can be replaced with the phase shift circuit 410C shown in the 26th. The capacitor 419 between the sensor 417 and the electrode of the FET 412 is used to prevent DC current. Figure 28 is a circuit diagram of a phase-shifted circuit containing an LR circuit; it is shown in Figure 26. The structure of the phase shift circuit 430C replacement is shown. The capacitor 439 inserted between the resistor 436 and the drain of the FET 432 is used to block direct current. [Tenth Modification of Tuning Circuit] (Please read the precautions on the back before filling in this page) Binding · Order l. This paper scale is applicable to the Chinese National Standard (CNS) Α4 specification (210X297 mm) „-3 f- V. Description of the invention (34) A7 B7 Figure 29 printed by the Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs is the circuit diagram of the tuning circuit 1G connecting the two-stage cascade of the phase shift circuit 410C; it shows the tenth modification of the tuning circuit Fig. 30 is a circuit diagram of a tuning circuit 1H connecting two stages of a phase shift circuit 430C in cascade. The inverter circuit 480 included in the tuning circuit 1G and 1H has a resistance ratio of two resistors 484 and 486. The predetermined gain is determined by the total of two Kang phase shift circuits 410C or two tilt phase shift circuits 430C, the total amount of phase shift becomes 180 ° at a specified frequency, and at this time, the gain of the phase inversion circuit 480 is adjusted so that The loop gain is 1M, thereby maintaining the specified tuning operation. In addition, the tuning circuits 1F, 1G, and 1H shown in Figure 26, Figure 29, and Figure 30 are composed of two phase shift circuits and non-inverting Circuit, or two-value phase shift circuit and reverse phase The circuit is constituted; it uses all the three connected circuits to make the total phase shift amount to 36 (Γ at a predetermined frequency, thereby performing a predetermined tuning operation. Therefore, if you only focus on the phase shift, you will The order in which the three circuits are connected has a certain degree of freedom, and the connection order can be determined according to their needs. In addition, although the above tuning circuits 1G and 1H are exemplified as examples in which the CR circuit is included in the phase shift circuit, the internal The phase shift circuit of the LR circuit is connected in cascade to form a tuning circuit. In the various tuning circuits described above, it is connected to the lotus arithmetic amplifier in the front stage phase shift circuit or the lotus arithmetic amplifier in the rear stage phase shift circuit. In the voltage divider circuit at the end, one of the voltage divider circuits may be omitted, or the voltage divider ratio may be set to 1. In addition, when an amplification operation is not required, the voltage divider circuit connected to the rear end of the rear-stage phase shift circuit may be omitted. , Straighten out the round of the phase shift circuit in the back stage (please read the precautions on the back before filling in this page) • Binding. Binding-the paper size is applicable to China National Standard (CNS) Α4 specification (210X 297 %) 38 -m * -m * Employee's consumer cooperation of the Central Standard Falcon Bureau of the Ministry of Economic Affairs, duprinting Α7 Β7 V. Description of invention (35). It is also possible to connect the feedback to the front stage side. Or, connect it to the rear stage phase shift circuit The division E ratio of the voltage divider circuit on the segment side may be set to 1. [J · Other Modifications] In addition, various tuning mechanisms shown in Fig. 1 etc. are used in the phase shift circuit that constitutes the tuning circuit. The junction type PET is used to form the variable resistor 116 in one phase shift circuit, but other elements may be used to form the variable resistor. In addition, according to the above tuning paths, although the internal phase shift circuit is changed by changing the internal The resistance value of the variable resistors 116 and 416 is used to change the tuning frequency. However, at the same time that the variable resistor is replaced by a fixed resistor, the variable resistors 136 and 436 in the subsequent phase shift circuit are replaced by a junction type or a MOS type. The variable resistance formed by the FET allows the control voltage applied to the gate of the FET to change the tuning frequency of the whole brewing. However, if the direction of the phase shift becomes reversed when the control voltage is changed, in Figure 7, the connection between the two ends of the trigger circuit 63 and the test status buffer 700, 702 is changed, or the two test status buffers 700 , The connection of the output terminal of 702 is changed, it is necessary to make some changes so that the direction of change of the control voltage applied to the tuning circuit 1 from the frequency control circuit 2 is opposite to the direction of change of the tuning frequency. Or, it is also possible to set the variable resistors inside the phase shift circuits in the front stage and the rear stage respectively. At this time, since the phase shift amounts of the phase shift circuits of both sides are simultaneously changed, there is an advantage that the total tuning frequency variation, that is, the tuning frequency variable range can be set in a wide range. In addition, in Fig. 2, it is also possible to connect the two phase shift circuits in the tuning circuit in a front-to-back direction. This paper scale is applicable to China National Standard Falcon (CNS) Α4 specification (210X 297mm) (please read the precautions on the back before filling in this page)-Installation · Order 297185 Α7 Β7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards, Ministry of Economic Affairs Description of the invention (36) In addition, the above-mentioned phase shifting road 110C, etc., changes the resistance value of the variable resistance 116, etc. connected in series with the capacitor 114, etc. to change the phase shift amount, thereby changing the overall tuning frequency, However, the overall tuning frequency may be changed by changing the capacitance of the capacitor 114 and the like. In the above embodiment, although the tuning circuits 1 to 1E are constituted by a phase shift circuit 110C using a lotus amplifier, etc., whereby high stability can be achieved, the use of the phase shift circuit Π0 of the present embodiment is performed. At this time, if the compensation voltage and the voltage gain do not require such high performance, it is also possible to use a differential amplifier M with a prescribed amplification rate instead of the lotus arithmetic amplifier in each phase shift circuit. Figure 31 is a circuit diagram of parts necessary for the operation of extracting the phase shift circuit from the configuration of the lotus amplifier; the entire system is operated as a differential amplifier with a prescribed amplification factor. The differential amplifier shown in the figure includes: a differential wheel input stage 100 composed of FETs; — a constant current circuit 102 that supplies a constant roll to the differential key input stage; — a prescribed bias voltage that is provided to the constant roll circuit Bias circuit 104; and a detection amplifier 106 connected to the differential input stage 100. As shown in the figure, it is possible to omit a cascade amplifier circuit for gaining the voltage gain contained in the actual operational amplifier, and to simplify the configuration of the differential amplifier by M to achieve a wide band. In this way, since the upper limit of the dynamic frequency can be increased by a simplified circuit, it is possible to increase the upper limit of the tuning frequency of the tuning circuit 1 etc. constructed using the differential amplifier. In addition, the present invention is not limited to the various embodiments described above, and various modifications can be implemented within the scope of the gist of the present invention. For example, Figure 2 shows the detailed configuration of the control circuit 1 etc., although the paper standard is applicable to the Chinese National Standard (CNS) Α4 specification (210Χ297mm) (please read the precautions on the back before filling this page.). Installation _ Order-Line 40 A7 B7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Invention description (37) The feedback resistance 170 is used as the feedback impedance element, and the input resistance 174 is used as the in-line impedance element, but due to As long as the addition can be performed under the citrus blue system that does not change the signal drawn by each element, the capacitor can be used to form the feedback impedance element and the round impedance element M can replace the resistor, or the combination of the resistor and the capacitor can be used. It is also possible to adjust the ratio of the real part and the imaginary part of the impedance at the same time. In addition, at least one of the feedback resistor 170 and the wheel resistor 174 may be constituted by a variable resistor so that the Q (or frequency bandwidth) in the tuning amplifier 1 or the like may be changed. In addition, in the phase shift circuit 110C shown in FIG. 2 and the like, although one or two FETs are used to constitute the variable resistor 116, it is also possible to connect the FET of the p-channel and the FET of the n-channel in parallel to form a variable resistor . In this way, since two FETs can be combined to form a variable resistor, thereby improving the nonlinear field of the FET, the distortion of the tuning output can be reduced. Industrial application possibilities As mentioned above, the tuning control method of the present invention uses the feedback of M to control the tuning frequency of the tuning circuit, so that the deviation of the frequency of the turn-on signal of the tuning circuit from the tuning frequency is eliminated, so The tuning frequency can be exactly matched with the frequency of the in-turn signal. Therefore, when the entire modulation mechanism is integrated, even if each manufactured wafer has a deviation in frequency characteristics, the tuning property will not be scattered. Furthermore, even if the element constant of each element that determines the tuning frequency varies due to the degree of variation, the variation of the tuning frequency can be suppressed, and it is also suitable for integration. (Please read the precautions on the back before filling in this page)-Pack. Order | Thread _ This paper standard is applicable to China National Standard (CNS) Α4 specification (210X297mm)

Claims (1)

A8 B8 C8 D8 Central Bureau of Standards of the Ministry of Economic Affairs β: Printed by the Industrial and Consumer Cooperatives 々, patent application scope 1 · One-bump tuning control method, including one · Tuning circuit, including: two cascade-connected full band-pass types A phase shift circuit; and an addition circuit which makes the round output of the latter phase shift circuit as the feedback signal to the key input side of the front phase shift circuit as before, after adding the feedback signal and the round signal Into the aforementioned phase shift circuit; thereby, allowing only signals near the specified frequency to pass through; and a frequency control circuit connected to the tuning circuit, when inputting a signal having a frequency near the specified frequency, according to the tuning circuit The phase difference between the input and output plots makes the tuning frequency of the tuning circuit match the frequency of the round-robin signal of the tuning path. 2. The tuning control method according to item 1 of the patent application scope, wherein at least one of the two phase shift circuits included in the tuning circuit can change the phase shift amount in accordance with the control signal from the frequency control circuit When the frequency of the signal pulled into the tuning circuit is different from the tuning frequency of the tuning circuit, the phase shift amount of at least one of the two phase shift circuits is changed, thereby making the tuning frequency coincide with the tuning frequency The frequency of the incoming signal. 3. The tuning control method according to item 2 of the scope of the patent application, wherein the frequency control path includes: a synchronous rectifier circuit based on the wheel output signal synchronized with the tuning path, for the wheel of the tuning path Synchronous rectification of the input signal; and a control signal osmium produces a bad road, according to the aforementioned synchronous rectification circuit (please read the precautions on the back before filling in this page). The paper size of the binding and binding book is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) _ 42-6. The scope of patent application A8 B8 C8 D8 A round printed by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, to detect the phase difference between the incoming and outgoing signals of the aforementioned tuning circuit. A control signal that changes the tuning frequency of the aforementioned tuning road is output in the direction in which this phase difference disappears' AV 4. According to the control method described in item 3 of the scope of the patent application, the aforementioned synchronous rectifier circuit includes, : / A reference signal generation circuit, which uses K output to synchronize with the remaining multiple of the aforementioned tuning circuit; and a switch, which is synchronized with the aforementioned reference signal , To pass or block the input signal of the aforementioned tuning circuit. 5_ According to the charge control method described in item 4 of the patent application scope, wherein the reference signal generating circuit includes an ixlf_comparator, which compares the voltage level of the output signal of the tuning circuit with a prescribed electrical value, thereby, The rectangular wave according to the comparison result is used as the reference signal in turn; the switch is to make the two voltage levels of the rectangular wave into the on state and the off state respectively, when the on state is turned on, the tuning circuit The key input signal passes. 6. The tuning control method according to item 3 of the patent application scope, wherein the control signal generating circuit includes: a pulse conversion circuit, which extracts a signal having a pulse width according to the round of the synchronous rectifier circuit, the pulse The width corresponds to the phase difference between the round-in and round-out of the tuning circuit; a polarity discrimination circuit determines the pole of the phase difference according to one of the four round-in and round-out signals of the aforementioned tuning; k, Hi I m —Λ i I 1 I nf: 1 I----l ^ nl (please read the precautions on the back before filling in this page), va line_ This paper scale uses the Chinese National Standard (CNS) A4 specification (210X297 Mm) 43 _ 4 _ Α8 Β8 C8 D8 Printed by the Consumers ’Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs, and the scope of patent application. A voltage synthesis circuit uses M to generate the pulse width of the signal from the aforementioned urea-impulse conversion circuit. Proportional voltage component, and at the same time, according to the judgment result of the aforementioned polarity discriminating circuit, the voltage component is subjected to M addition or subtraction to the predetermined calendar to thereby synthesize the control voltage; The control voltage synthesized by the voltage synthesis circuit is output as the control signal. 7. The tuning control method according to item 2 of the patent application scope, wherein at least one of the two phase shift paths included in the tuning circuit includes: a differential amplifier connected to the inverting in-phase terminal A square terminal of the first resistor passes through the first resistor_input AC signal; a second resistor is connected between the output terminal of the differential amplifier and the inverting input terminal of the differential amplifier; and a series circuit It is composed of a resistive element and a third resistor that are formed from a Feng container or II sensor, and the time constant can be changed by the aforementioned control signal, and connected to the other end of the first resistor; the aforementioned third resistor and The connection part of the front reactance element is connected to the non-inverting car input terminal of the aforementioned differential amplifier. 8. The tuning control method according to item 7 of the patent application scope, wherein the tuning circuit includes a non-inverting circuit that does not change the phase of the input AC signal, that is, the output, Insert a part of the feedback loop formed by the two phase-shift circuits connected in the aforementioned cascade; (please read the precautions on the back before filling out this page)-The paper size of the binding and binding book is in accordance with Chinese national standards ( CNS) Α4 specification (210X297 mm) 44 A8 B8 C8 D8 Printed by the Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 6. The scope of the patent application The aforementioned tuning circuit is the entire two-phase phase-shifted road connected by the aforementioned cascade, only Let the total amount of phase shift be 360. The signal near the frequency passes. 9. The tuning control method according to item 7 of the patent application scope, wherein the tuning circuit includes an inverting circuit that inverts and outputs the phase of the input AC signal. Part of the feedback loop formed by the two cascade-connected phase shift circuits; the tuning circuit is the total of the phase shift amounts to 180 ° by the total of the two cascade-connected phase shift circuits The signal near the frequency passes. 10. The port regulation method according to item 7 of the patent application scope, in which a voltage divider circuit is inserted into a part of the feedback loop formed by the two phase shift circuits connected in the aforementioned cascade; The AC signal input to the aforementioned sub-IS circuit is used as a tuning signal. 11. The tuning control method according to item 2 of the patent application scope, wherein at least one of the two previous phase shift circuits included in the tuning circuit includes: a differential amplifier connected to the inverting input terminal A square terminal of a resistor passes an AC signal through the first resistor; a first voltage divider circuit is connected to the drawn terminal of the differential amplifier; a second resistor is connected to the first voltage divider Between the round out end of the circuit and the inverse round in terminal of the aforementioned differential amplifier; and a series circuit, consisting of 18 anti-components and third paper standards made from self-contained containers or inductors, applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) (please read the notes on the back before filling in this page)-Installation · Threading A8 B8 C8 D8 printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs The time constant can be changed by the control multiplier and connected to the other end of the first antenna; connect the connection portion of the third resistor and the reactance element to the differential amplifier The non-inverted rotation terminal. 12. The tuning control method according to item 11 of the scope of the patent application, wherein the tuning circuit 12 includes a non-inverting circuit that does not change the phase of the alternating AC signal and the non-inverting circuit, the non-inverting circuit is It is inserted into a part of the feedback loop formed by the two-phase phase-shift circuits connected in the cascade; the tuning circuit is formed by the total of two phase-shift circuits connected by the cascade only the total amount of phase shift The signal near the frequency of 360 ° passes. 13 _ The method for controlling the tuning according to item 11 of the scope of the patent application, wherein the tuning circuit includes an inverting circuit that inverts the phase of the input AC signal, and the inverting circuit is A part of the feedback circuit formed by the two cascade-connected phase shift circuits; the tuning circuit is the total of the phase shifts set to 180 ° by the two cascade connected phase shift circuits The signal near the frequency passes. 14. The tuning control method according to item 11 of the patent application park, in which the second voltage-dividing path is inserted into a part of the feedback loop formed by the two cascade phase shift circuits connected in the aforementioned cascade; the aforementioned tuning circuit , Will be input into the aforementioned second voltage divider circuit (please read the precautions on the back before filling in this page). Pack. Order 1 This paper size is applicable to China National Standard (CNS) A4 specification (210X297mm) 2 4b 1. The A8 B8 C8 D8 printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ☆, the patent application scope AC signal is output as the tuning signal. 15. The tuning control method according to item 2 of the patent application scope, wherein at least one of the two tilt phase shift circuits included in the tuning circuit includes: a differential amplifier connected to the first inverting input terminal One side of the resistor is drawn into the AC signal through the first mold resistance; a second resistor is connected between the inverting pull-in terminal and the wheel-out terminal of the differential amplifier; a third resistor is connected to one end To the inverting pull-in terminal of the aforementioned differential amplifier, and the other end is grounded; and a series circuit is formed by a reactance element and a fourth resistor formed from a capacitor or an inductor, and can be changed by the aforementioned control signal The time constant is connected to the other end of the first resistor; the connecting portion of the fourth resistor and the reactance element is connected to the non-inverting input terminal of the differential amplifier. 16. The tuning control method according to item 15 of the scope of the patent application, wherein the tuning circuit includes a non-inverting circuit that does not change the phase of the incoming rollover signal, that is, turns out. The non-inverting circuit is It is inserted in a part of the feedback loop formed by the two-phase phase-shift circuit connected by the cascade; the tuning circuit is the whole of the two phase-shift circuits connected by the cascade, and only the phase shift is set The total number of times around the frequency of 360 ° is passed. 17. The tuning control method according to item 15 of the patent application scope, wherein the tuning circuit includes an inverting circuit that inverts the phase of the input AC signal, and the inverting circuit is included in the • Γ (Please read the precautions on the back before filling in this page)-Packing. The paper size of the binding is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm). Printed by the Ministry of Economic Affairs Central Standards Bureau Staff Consumer Cooperative Α8 Β8 C8 D8 6. Scope of patent application _ Part of the feedback loop formed by the two cascade-connected phase paths; the tuning circuit is based on the entire two-phase phase-shift circuit connected by the cascade, allowing only phase shift The sum of the quantities is such that the signal near the frequency of 180 ° passes. 18. The tuning control method according to item 15 of the patent application scope, in which a voltage divider circuit is inserted into a part of the feedback loop formed by the two phase shift circuits connected in the aforementioned cascade; The AC signal input to the voltage dividing circuit is output as a tuning signal. 19. The tuning control method according to item 2 of the scope of the patent application, wherein the tuning circuit includes a non-inverting road that rotates without changing the phase of the input AC signal, and the non-inverting circuit is inserted A part of the feedback circuit formed by the two phase-shift circuits connected in the front cascade; at least one of the two phase-shift circuits includes: a conversion mechanism, which is used to convert the alternating AC signal into the same phase and the reverse phase The AC signal of the corresponding phase is plotted for M; a series connection is composed of a resistance element formed from a capacitor or an inductor and the first resistance * At the same time, the time constant can be changed by the aforementioned control signal; and the synthesis mechanism It is to synthesize the AC signal of one side that is carried by the converter through one side of the aforementioned series road, and to synthesize the AC signal of the other side through the other end of the series road. 20. According to the tuning control method described in item 19 of the patent application scope, the paper standard is applicable to the Chinese National Standard (CNS> A4 specification (210X297 mm) 48 li _------- 一-装-( Please read the precautions on the back before filling in this page) Order-Line-Patent Application Scope A8 B8 C8 D8 Central China Bureau of Economic Affairs Employee Consumer Cooperative printed and tuned the aforementioned tuning circuit, which is connected by the two cascaded phase shifts For the whole circuit, only the signal near the frequency with the total phase shift amount of 360 ° is allowed to pass. 21. According to the tuning control method described in item 19 of the patent application scope, the voltage divider circuit is pressed into the cascade connected by the aforementioned Part of the feedback loop formed by the two phase shift circuits and the non-inverting circuit; the tuning circuit pulls the AC signal input to the voltage dividing circuit as a tuning signal. 22. According to the patent application The tuning control method described in item 19, wherein the conversion mechanism in the two-phase phase shift path includes a transistor; the source and drain, or the emitter and collector of the transistor are connected respectively A second resistance with approximately equal resistance; input an AC signal to the gate or base of the aforementioned electric #, k; and to the source of the aforementioned crystal (: 0 ?, 'between or #, pole: v collector, Connect the components that constitute the aforementioned series circuit $ _component-resistor 23. According to the tuning control method described in item 2 of the patent application scope, wherein the tuning circuit includes a phase reversal of the AC signal input Inverting circuit, the inverting circuit is inserted in a part of the feedback loop formed by the two cascaded phase shift circuits; at least one of the two phase shift circuits includes: a conversion mechanism It converts the input AC signal into the same or reversed AC signal, and draws it to M; a series circuit is composed of a reactance element and a first resistor formed from a ballast container or sensor, and can be The size of the control paper mentioned above is applicable to the Chinese National Standard (CNS) Α4 specification (210X2S »7mm) 49 (please read the precautions on the back before filling in this page) The scope of the patent application is changed by the printed signal of the employee consumer cooperative of the Central Bureau of Standards of the Ministry of Economy to change the time constant; The other side of the circuit synthesizes the AC signal of the other side. 24. The tuning control method according to item 23 of the patent application scope, wherein the tuning circuit is the total of the two phase shift circuits connected by the cascade, and only the sum of the phase shift amounts to a frequency around 180 ° The signal passes. 25. The tuning control method according to item 23 of the patent application scope, wherein the voltage divider circuit is inserted into a part of the feedback loop formed by the two phase shift circuits and the front inverter circuit connected in the aforementioned cascade; Tuning the Xiaolu is to use the AC signal that has entered the previously divided warm road as the tuning signal. 26. According to the tuning control method described in item 23 of the patent application park, wherein the transformation mechanism in the two phase-shifted paths includes transistors; the source and drain, or the emitter of the transistors And collector, connect second resistors with approximately equal resistance; input the AC signal to the gate or base of the aforementioned crystal; between the source X and the pole of the aforementioned transistor; Frost pole. Connect the resistance of the above-mentioned anti-corresponding element that constitutes the above-mentioned series circuit. 27. The tuning control method according to item 2 of the application scope, in which a component is formed on a semiconductor substrate. (Please read the precautions on the back before filling out this page) Binding · Order This paper size is applicable to China National Standard (CNS) A4 specifications (210X297mm)