CN115021681A - Voltage-controlled oscillator based on dual-mode voltage waveform shaping of F23 inductor - Google Patents
Voltage-controlled oscillator based on dual-mode voltage waveform shaping of F23 inductor Download PDFInfo
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- CN115021681A CN115021681A CN202210689672.2A CN202210689672A CN115021681A CN 115021681 A CN115021681 A CN 115021681A CN 202210689672 A CN202210689672 A CN 202210689672A CN 115021681 A CN115021681 A CN 115021681A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1228—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more field effect transistors
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/02—Details
- H03B5/04—Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
- H03B5/1212—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
- H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
- H03B5/1293—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator having means for achieving a desired tuning characteristic, e.g. linearising the frequency characteristic across the tuning voltage range
Abstract
The invention provides a voltage-controlled oscillator based on F23 inductance dual-mode voltage waveform shaping, which comprises voltage-controlled oscillator circuits, F23tank and switching circuits, wherein the voltage-controlled oscillator circuits are symmetrically arranged in two groups, the two groups of voltage-controlled oscillator circuits are connected through the F23tank, the switching circuits are arranged on two sides of the F23tank and are connected with the two groups of voltage-controlled oscillator circuits, the switching circuits are connected with the F23tank, and the F23tank comprises an inductance coil D 1 Capacitor C 2 And a varactor V ar2 The invention combines the F23tank and the dual-mode switching mode, is realized by adopting the dual modes, further improves the tuning range of the harmonic oscillator, reduces the design complexity of the dual-mode oscillator realized by a transformer in the prior art, greatly widens the tuning range, and utilizes the advantage of the shaping VCO to realize low phase noise and simultaneously widen the tuning range.
Description
Technical Field
The invention relates to the technical field of voltage-controlled oscillators, in particular to a voltage-controlled oscillator based on dual-mode voltage waveform shaping of an F23 inductor.
Background
With the development of communication technology, especially the deduction of technologies such as automobile radar, 5G communication, internet of things and the like in recent years, the performance requirement on the frequency source is higher and higher, and the VCO is used as the core of the frequency source, and the performance of the VCO determines the quality of the frequency source to a great extent. Therefore, high performance VCO designs face significant demands and challenges.
In order to improve the performances of various aspects of the VCO, various technical difficulties are overcome in accordance with the scientific research and the industrial industry, a plurality of novel VCO structures are provided, and Groszkowski reports the research phenomenon in 1933: for an LC voltage-controlled oscillator, the oscillation frequency of the LC voltage-controlled oscillator is not strictly equal to the natural resonant frequency of an LC network but lower than the natural resonant frequency of the LC network, because the current entering a resonant cavity contains fundamental harmonics and various harmonics, the fundamental current passes through an equivalent resistor, and the harmonic current passes through a capacitor, so that the energy stored in an inductor in the resonant cavity is less than that stored in the capacitor, and the resonant frequency can only be reduced for balancing the inequality, so that the actual oscillation frequency is shifted from the natural resonant frequency;
the traditional Class-F23 VCO structure adopts an F23 transformer to connect a cross-coupled pair and a resonant cavity, the resonant cavity resonates at fundamental wave, second harmonic wave and third harmonic wave, so that the Groszkowski effect can be inhibited, but the transformer is complex in design and can be realized only by matching with a single-ended capacitor and a differential pair capacitor, in order to solve the influence of the Groszkowski effect, the academia proposes an HT-VCO, the traditional tail filter-based voltage-controlled oscillator has good phase noise performance but needs an additional inductor and occupies more chip area, then the academia proposes an implicit common mode voltage-controlled oscillator, a primary resonant cavity and a secondary resonant cavity are realized by one transformer, a complex on-chip transformer needs to be designed, the single-ended capacitor and the differential capacitor need to be matched, and the skin effect of the inductor becomes more obvious along with the improvement of frequency, so that the loss is larger, the Q value is reduced, and therefore the phase noise is deteriorated, so the invention provides a voltage-controlled oscillator based on dual-mode voltage waveform shaping of an F23 inductor to solve the problems in the prior art.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a voltage controlled oscillator based on dual-mode voltage waveform shaping of F23 inductor, which has the advantages of simultaneously realizing waveform shaping and mode switching without requiring a transformer, and solves the problems in the prior art.
To achieve the object of the present invention, the present invention is achieved byThe technical scheme is realized as follows: the utility model provides a voltage controlled oscillator of bimodulus voltage waveform shaping based on F23 inductance, includes voltage controlled oscillator circuit, F23tank and switching circuit, voltage controlled oscillator circuit symmetry is provided with two sets ofly, and connects through F23tank between two sets of voltage controlled oscillator circuit, the both sides of F23tank all are equipped with switching circuit, and switching circuit and two sets of voltage controlled oscillator circuit connection, switching circuit and F23tank are connected, and F23tank includes inductance coils D 1 Capacitor C 2 And a varactor V ar2 The switching circuit comprises a capacitor C 1 A switch Se and a switch So, the voltage-controlled oscillator circuit comprises an inductor L 1 Varactor V ar1 、M 1 Cross-coupled MOS transistor and M 2 Cross-coupled MOS transistor, said M 1 Cross-coupled MOS transistor and M 2 The cross-coupling MOS tubes are in cross-coupling arrangement.
The further improvement lies in that: the capacitor C 2 Two groups of capacitors C are symmetrically arranged 2 Are respectively connected with two groups of voltage-controlled oscillator circuits, and the inductance coil D 1 Four groups of four inductance coils D 1 Is uniformly distributed on the capacitor C 2 And an inductance coil D 1 And a capacitor C 2 Connected, both sides of said inductor winding D 1 The center tap of (a) is connected to ground.
The further improvement is that: the switch Se is provided with two groups, the two groups of switches Se are respectively positioned at two sides of the switch So, the two groups of switches Se are connected with the switch So, and the two groups of switches Se are respectively connected with the capacitor C 1 And a capacitor C 2 And (4) connecting.
The further improvement is that: the inductance L 1 Two groups of inductors L are symmetrically arranged 1 Is connected with VDD, and two groups of the inductors L 1 Respectively with M 2 Cross-coupled MOS transistor and M 1 And the drains of the cross-coupled MOS tubes are connected.
The further improvement lies in that: the varactor V ar1 Two groups of varactors V are symmetrically arranged ar1 In opposite arrangement, a group of said varactors V ar1 Input terminal of (1) and M 1 Drain electrode of cross coupling MOS tube is connectedThen, another set of the varactors V ar1 And M 2 And the drains of the cross-coupled MOS tubes are connected.
The further improvement lies in that: the varactor V ar2 Two groups of varactors V are symmetrically arranged ar1 In opposite arrangement, a group of said varactors V ar2 Input terminal of and M 1 Source connection of cross-coupled MOS transistors, another set of said varactors V ar2 Input terminal of and M 2 And the source electrodes of the cross-coupled MOS tubes are connected.
The further improvement lies in that: when the switch Se is conducted, the switch So is disconnected, and at the moment, the capacitor C 1 And a capacitor C 2 The voltage waveforms on both sides are in a common mode, when the switch So is switched on, the switch Se is switched off, and at the moment, the capacitor C 1 And a capacitor C 2 The voltage waveforms on both sides are differential.
The further improvement lies in that: the varactor V ar1 And an inductance L 1 Forming a resonant cavity and a varactor V ar1 And an inductance L 1 In parallel arrangement, two sets of said varactors V ar1 And adopts a differential form.
The beneficial effects of the invention are as follows: this kind of voltage controlled oscillator of bimodulus voltage waveform shaping based on F23 inductance combines F23tank and bimodulus switching mode, adopt the bimodulus to realize, harmonic oscillator's tuning range has further been improved, the design complexity of bimodulus oscillator who realizes with the transformer before having reduced, very big widening the tuning range, and utilized shaping VCO's advantage, can realize low phase noise simultaneously, widen tuning range, adopt the F23tank of novel structure simultaneously, through opening a slot in the middle of the parallel coil of F23tank, can be effectual under the condition that does not increase design complexity the loss that skin effect and electric current gathering effect brought under the high frequency, thereby can improve the Q value of inductance, further reduce phase noise.
Drawings
Fig. 1 is a schematic diagram of the circuit structure of the present invention.
Fig. 2 is a schematic diagram of the structure of the F23 inductor of the present invention.
Fig. 3 is a diagram illustrating the Q-factor of the inductor F23 according to the present invention compared with the Q-factor of the conventional inductor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to fig. 1 to fig. 3, the present embodiment provides a voltage-controlled oscillator with dual-mode voltage waveform shaping based on F23 inductance, which includes a voltage-controlled oscillator circuit, a voltage-controlled oscillator circuit F23tank, and a switching circuit, where the voltage-controlled oscillator circuit is symmetrically provided with two groups, namely a voltage-controlled oscillator circuit a1 and a voltage-controlled oscillator circuit a2, the two groups of voltage-controlled oscillator circuits are connected by the voltage-controlled oscillator circuit F23tank, that is, the voltage-controlled oscillator circuit a1 and the voltage-controlled oscillator circuit a2 are provided with the voltage-controlled oscillator circuit F23tank, the two sides of the voltage-controlled oscillator circuit F23tank are provided with the switching circuit, and the switching circuit is connected with the two groups of voltage-controlled oscillator circuits, the switching circuit is connected with the voltage-controlled oscillator circuit F23tank, and the voltage-controlled oscillator circuit F23tank includes an inductance coil D 1 Capacitor C 2 And a varactor V ar2 The switching circuit comprises a capacitor C 1 A switch Se and a switch So, the voltage-controlled oscillator circuit comprises an inductor L 1 Varactor V ar1 、M 1 Cross-coupled MOS transistor and M 2 Cross-coupled MOS transistor, said M 1 Cross-coupled MOS transistor and M 2 The cross-coupled MOS tubes are in cross-coupled arrangement, M 1 Grid and M of cross-coupled MOS tube 2 Drain connection of cross-coupled MOS transistors, M 2 Grid and M of cross-coupled MOS tube 1 And the drains of the cross-coupled MOS tubes are connected.
The capacitor C 2 Two groups of capacitors C are symmetrically arranged 2 Are respectively connected with two groups of voltage-controlled oscillator circuits, and the inductance coil D 1 Four groups of four inductance coils D 1 Uniformly distributed on the capacitor C 2 And an inductance coil D 1 And a capacitor C 2 Connected, both sides of said inductor winding D 1 Is connected with the grounding end, and a capacitor C 2 And four groups of inductance coils D 1 Forming an F23tank, as shown in FIG. 1, two-sided inductor coil D 1 Are respectively provided with two groups, i.e. four groups of inductance coils D 1 Uniformly distributed on the capacitor C 2 Input terminals and output terminals.
In this embodiment, mode switching is performed by adopting a mode of switching a coupling capacitor while shaping is realized by adopting F23tank, and a switch is realized by adopting a PMOS transistor, wherein a switch Se is used for selecting an even mode and a switch So is used for selecting an odd mode, when a required mode is switched on, other switches are switched off, the required mode can be excited, the switch Se is provided with two groups, the two groups of switches Se are respectively located at two sides of the switch So, the two groups of switches Se are connected with the switch So, and the two groups of switches Se are respectively connected with a capacitor C 1 And a capacitor C 2 In the even mode, when the switch Se is switched on, the switch So is switched off, and the capacitor C is switched off at the moment 1 And a capacitor C 2 The voltage waveforms on both sides are in common mode, so that the capacitor C 1 And a capacitor C 2 The resonant cavity is not accessed, and in the odd mode, when the switch So is switched on, the switch Se is switched off, and at the moment, the capacitor C is switched off 1 And a capacitor C 2 The voltage waveforms on both sides are differential, so that the capacitor C 1 And a capacitor C 2 The resonant cavity is connected, so that the tuning range can be widened by combining two modes with a tuning capacitor, and meanwhile, shaping is realized by adopting F23tank without the need of transformer-based design, so that the design complexity can be greatly reduced.
As shown in the figure, in this embodiment, a new type of F23tank is used to replace the transformer, and the F23tank is connected to the source stage of the cross-coupled pair, and is matched with two single-ended capacitors, so that oscillation at the second harmonic and the third harmonic can be formed, and the performance is improved mainly in two aspects:
(1) the VCO (voltage controlled oscillator) based on the dual-mode switching of the F23tank (the inductance with two peak values at the second harmonic and the third harmonic) can realize the shaping of the waveform and the mode switching at the same time without a transformer, thereby greatly reducing the design difficulty;
(2) for differential mode signals, signals flow through the inner ring and the outer ring, a tap in the middle is a virtual place, no signal flows, a slot is formed in the middle of two circles of parallel metal, generated eddy flows through a narrow loop, the influence of the eddy can be reduced due to the fact that net electromotive force of the loop is small, loss caused by skin effect under high frequency can be effectively solved, for common mode signals, only currents flow through the outer ring and the tap, a common slot is formed in the middle of the two circles of parallel metal, a small section of metal in the inner ring can be connected with metal outside in parallel, and therefore the equivalent width of the metal is increased, and therefore the common mode Q value (quality factor) can be improved.
The inductance L 1 Two sets of inductors L are symmetrically arranged, in the embodiment 1 Four groups of inductors are arranged in total and are uniformly distributed in the voltage-controlled oscillator circuit A1 and the voltage-controlled oscillator circuit A2, and two groups of inductors L 1 Is connected with VDD, and two sets of the inductors L 1 Respectively with M 2 Cross-coupled MOS transistor and M 1 Grid connection of cross-coupled MOS transistor, varactor V ar1 Two groups of varactors V are symmetrically arranged ar1 In the opposite arrangement, in the present embodiment, the inductance V ar1 Four groups are arranged in total and are uniformly distributed in a voltage-controlled oscillator circuit A1 and a voltage-controlled oscillator circuit A2, and one group of varactors V ar1 Input terminal of (1) and M 1 The drains of the cross-coupled MOS transistors are connected, and the other group of the varactor transistors V ar1 And M 2 The drain electrode of the cross-coupled MOS tube is connected with the variable capacitance tube V ar2 Two groups of varactors V are symmetrically arranged ar1 In the opposite arrangement, in the present embodiment, the inductance V ar2 Four groups are arranged in total and are uniformly distributed in a voltage-controlled oscillator circuit A1 and a voltage-controlled oscillator circuit A2, and one group of varactors V ar2 Input terminal of and M 1 Source connection of cross-coupled MOS transistors, another set of said varactors V ar2 Input terminal of and M 2 Source connection of cross-coupled MOS transistor, varactor V ar1 And an inductance L 1 Form a resonant cavity, andvaractor V ar1 And an inductance L 1 Two groups of variable capacitance tubes V arranged in parallel and adopting differential form ar1 And control tuning by VT1, two groups of tubes V ar2 Tuning is controlled by VT 2.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A dual-mode voltage waveform shaped voltage controlled oscillator based on F23 inductance, characterized by: including voltage controlled oscillator circuit, F23tank and switching circuit, voltage controlled oscillator circuit symmetry is provided with two sets ofly, and connects through F23tank between two sets of voltage controlled oscillator circuit, the both sides of F23tank all are equipped with switching circuit, and switching circuit and two sets of voltage controlled oscillator circuit connection, switching circuit is connected with F23tank, and F23tank includes inductance coils D 1 Capacitor C 2 And a varactor V ar2 The switching circuit comprises a capacitor C 1 A switch Se and a switch So, the voltage-controlled oscillator circuit comprises an inductor L 1 Varactor V ar1 、M 1 Cross-coupled MOS transistor and M 2 Cross-coupled MOS transistor, said M 1 Cross-coupled MOS transistor and M 2 The cross-coupling MOS tubes are in cross-coupling arrangement.
2. A voltage controlled oscillator based on dual-mode voltage waveform shaping of F23 inductance as claimed in claim 1, wherein: the capacitor C 2 Two groups of capacitors C are symmetrically arranged 2 Are respectively connected with two groups of voltage-controlled oscillator circuits, and the inductance coil D 1 Four groups of four inductance coils D 1 Uniformly distributed on the capacitor C 2 Both sides ofAnd an inductance coil D 1 And a capacitor C 2 Connected, both sides of said inductor winding D 1 The center tap of (a) is connected to ground.
3. A voltage controlled oscillator based on dual-mode voltage waveform shaping of F23 inductance as claimed in claim 1, wherein: the switch Se is provided with two groups, the two groups of switches Se are respectively positioned at two sides of the switch So, the two groups of switches Se are connected with the switch So, and the two groups of switches Se are respectively connected with the capacitor C 1 And a capacitor C 2 And (4) connecting.
4. A voltage controlled oscillator based on dual-mode voltage waveform shaping of F23 inductance as claimed in claim 1, wherein: the inductance L 1 Two groups of inductors L are symmetrically arranged 1 Is connected with VDD, and two sets of the inductors L 1 Respectively with M 2 Cross-coupled MOS transistor and M 1 And the drains of the cross-coupled MOS tubes are connected.
5. A voltage controlled oscillator based on dual-mode voltage waveform shaping of F23 inductance as claimed in claim 1, wherein: the varactor V ar1 Two groups of varactors V are symmetrically arranged ar1 In opposite arrangement, a group of said varactors V ar1 Input terminal of and M 1 The drains of the cross-coupled MOS transistors are connected, and the other group of the varactor transistors V ar1 And M 2 And the drains of the cross-coupled MOS tubes are connected.
6. A voltage controlled oscillator based on dual-mode voltage waveform shaping of F23 inductance as claimed in claim 1, wherein: the varactor V ar2 Two groups of varactors V are symmetrically arranged ar1 Are oppositely arranged, and a group of the variable capacitance tubes V ar2 Input terminal of (1) and M 1 Source connection of cross-coupled MOS transistors, another set of said varactors V ar2 Input terminal of and M 2 And the source electrodes of the cross-coupled MOS tubes are connected.
7. A voltage controlled oscillator based on dual-mode voltage waveform shaping of F23 inductance as claimed in claim 1, wherein: when the switch Se is conducted, the switch So is disconnected, and at the moment, the capacitor C 1 And a capacitor C 2 The voltage waveforms on both sides are in a common mode, when the switch So is switched on, the switch Se is switched off, and at the moment, the capacitor C 1 And a capacitor C 2 The voltage waveforms on both sides are differential.
8. A voltage controlled oscillator based on dual-mode voltage waveform shaping of F23 inductance as claimed in claim 1, wherein: the varactor V ar1 And an inductance L 1 Forming a resonant cavity and a varactor V ar1 And an inductance L 1 In parallel arrangement, two sets of said varactors V ar1 And adopts a differential form.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210689672.2A CN115021681A (en) | 2022-06-17 | 2022-06-17 | Voltage-controlled oscillator based on dual-mode voltage waveform shaping of F23 inductor |
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| CN202210689672.2A CN115021681A (en) | 2022-06-17 | 2022-06-17 | Voltage-controlled oscillator based on dual-mode voltage waveform shaping of F23 inductor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117081504A (en) * | 2023-09-01 | 2023-11-17 | 香港中文大学（深圳） | Harmonic oscillator for realizing harmonic tuning based on harmonic current selection |
| CN117335749A (en) * | 2023-10-31 | 2024-01-02 | 华南理工大学 | Multi-core multi-mode voltage-controlled oscillator and chip |
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2022
- 2022-06-17 CN CN202210689672.2A patent/CN115021681A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117081504A (en) * | 2023-09-01 | 2023-11-17 | 香港中文大学（深圳） | Harmonic oscillator for realizing harmonic tuning based on harmonic current selection |
| CN117081504B (en) * | 2023-09-01 | 2024-04-05 | 香港中文大学（深圳） | Harmonic oscillator for realizing harmonic tuning based on harmonic current selection |
| CN117335749A (en) * | 2023-10-31 | 2024-01-02 | 华南理工大学 | Multi-core multi-mode voltage-controlled oscillator and chip |
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