Comb spectrum generator and electronic equipment

Abstract

The invention discloses a comb spectrum generator and electronic equipment. According to the comb spectrum generator, a bias module, an input matching module and a selection module are sequentially connected, the selection module is further connected with an odd comb spectrum generation module and an even comb spectrum generation module, and the odd comb spectrum generation module and the even comb spectrum generation module are both connected to an output matching module; the odd comb spectrum generation module comprises a first odd pulse generation unit, an odd intermediate matching unit and a second odd pulse generation unit which are connected in sequence; the bias module is used for providing bias voltage; the input matching module is used for performing impedance matching on an input signal; the selection module is used for controlling an input signal to be input to the odd comb spectrum generation module or the even comb spectrum generation module so as to generate odd harmonics or even harmonics; and the output matching module is used for carrying out impedance matching on odd harmonics or even harmonics. According to the comb spectrum generator provided by the embodiment of the invention, the applicability and the use flexibility of the comb spectrum generator can be improved.

Description

Technical Field

[0001] The present invention relates to the field of electronic technology, and in particular, to a comb spectrum generator and an electronic device. Background Art

[0002] A comb spectrum generator is a signal generator whose output signal has a series of harmonic components of an input signal, and each harmonic component has a significant signal power. The output signal usually includes a series of spectrum components with uniformly spaced frequencies, such that the spectrum of the output signal resembles the teeth of a comb.

[0003] However, in the prior art, a comb spectrum generator cannot select the parity of the generated harmonics, and the applicable scenarios of the comb spectrum generator are relatively narrow, which also results in poor practicability and flexibility in use of the comb spectrum generator. Summary of the Invention

[0004] The present invention provides a comb spectrum generator and an electronic device to improve the applicability and flexibility in use of the comb spectrum generator.

[0005] According to one aspect of the present invention, there is provided a comb spectrum generator, which includes: a bias module, an input matching module, a selection module, an odd-order comb spectrum generating module, an even-order comb spectrum generating module, and an output matching module;

[0006] The bias module is connected to the input matching module, the input matching module is further connected to the selection module, the selection module is respectively connected to the odd-order comb spectrum generating module and the even-order comb spectrum generating module, and both the odd-order comb spectrum generating module and the even-order comb spectrum generating module are connected to the output matching module; the odd-order comb spectrum generating module includes a first odd-order pulse generating unit, an odd-order intermediate matching unit, and a second odd-order pulse generating unit connected in sequence; wherein, step diodes are provided in the first odd-order pulse generating unit, the second odd-order pulse generating unit, and the even-order comb spectrum generating module.

[0007] The bias module is used to provide a bias voltage; the input matching module is used to perform impedance matching on an input signal; the selection module is used to control the input signal to be input to the odd-order comb spectrum generating module or the even-order comb spectrum generating module; the odd-order intermediate matching unit is used to perform impedance matching on the first odd-order pulse generating unit and the second odd-order pulse generating unit; the first odd-order pulse generating unit and the second odd-order pulse generating unit are used to generate odd harmonics; the even-order comb spectrum generating module is used to generate even harmonics; the output matching module is used to perform impedance matching on odd harmonics or even harmonics.

[0008] Optionally, the first odd-order pulse generating unit includes: a first step diode and a second step diode;

[0009] The anode of the first step diode is connected to the selection module, and the cathode of the first step diode is connected to the odd-order intermediate matching unit; the anode of the second step diode is connected to the cathode of the first step diode; the cathode of the second step diode is connected to the anode of the first step diode.

[0010] Optionally, the second odd-order pulse generating unit includes: a third step diode and a fourth step diode;

[0011] The anode of the third step diode is connected to the odd-order intermediate matching unit, and the cathode of the third step diode is connected to the output matching module; the anode of the fourth step diode is connected to the cathode of the third step diode; the cathode of the fourth step diode is connected to the anode of the third step diode.

[0012] Optionally, the even-order comb spectrum generating module includes: an even-order splitting unit, a first even-order pulse generating unit, a second even-order pulse generating unit, and an even-order synthesizing unit;

[0013] The input end of the even-order splitting unit is connected to the selection module, the first output end and the second output end of the even-order splitting unit are respectively connected to the first even-order pulse generating unit and the second even-order pulse generating unit, the first even-order pulse generating unit is further connected to the even-order synthesizing unit, the second even-order pulse generating unit is further connected to the even-order synthesizing unit, and the even-order synthesizing unit is further connected to the output matching module;

[0014] The even-order splitting unit is configured to split the input signal into a first excitation signal and a second excitation signal that are equal in amplitude and opposite in phase; the first even-order pulse generating unit is configured to generate a first harmonic signal according to the first excitation signal; the second even-order pulse generating unit is configured to generate a second harmonic signal according to the second excitation signal; the even-order synthesizing unit is configured to synthesize the first harmonic signal and the second harmonic signal to generate an even-order harmonic.

[0015] Optionally, the first even-order pulse generating unit includes: a fifth step diode;

[0016] The anode of the fifth step diode is connected to the even-order splitting unit, and the cathode end of the fifth step diode is connected to the even-order synthesizing unit;

[0017] And / or,

[0018] The second even-order pulse generating unit includes: a sixth step diode;

[0019] The anode of the sixth step diode is connected to the even splitting unit, and the cathode of the sixth step diode is connected to the even combining unit.

[0020] Optionally, the even splitting unit includes: a center-tapped transformer.

[0021] Optionally, the even splitting unit includes: an input power splitter, a phase shifter, and an attenuator;

[0022] The input power splitter is connected to the selection module, and the input power splitter is also respectively connected to the phase shifter and the attenuator. The phase shifter is also connected to the first even pulse generating unit, and the attenuator is also connected to the second even pulse generating unit;

[0023] The input power splitter is configured to split the input signal into a first split signal and a second split signal; the phase shifter is configured to perform phase shifting on the first split signal to obtain a first excitation signal; the attenuator is configured to reduce the amplitude of the second split signal to obtain a second excitation signal.

[0024] Optionally, the even combining unit includes: an output power splitter.

[0025] Optionally, the selection module includes: a single-pole double-throw switch.

[0026] According to another aspect of the present invention, an electronic device is further provided, and the electronic device includes the comb spectrum generator provided in any of the above embodiments.

[0027] In the embodiments of the present invention, the bias module drives the first odd pulse generating unit, the second odd pulse generating unit, and the even comb spectrum generating module, and the selection module selects the output path of the input signal to control the input signal to be input to the odd comb spectrum generating module or the even comb spectrum generating module, so as to realize the selection of the generation of odd harmonics or even harmonics. The bias module of the embodiments of the present invention drives the odd comb spectrum generating module or the even comb spectrum generating module through the selection module, and can select to generate odd harmonics or even harmonics according to requirements, with diverse application scenarios, which is beneficial to improving the applicability and flexibility of use of the comb spectrum generator.

[0028] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. Description of the Drawings

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 is a schematic diagram of a comb spectrum generator provided by an embodiment of the present invention;

[0031] Figure 2 is a schematic diagram of another comb spectrum generator provided by an embodiment of the present invention;

[0032] Figure 3 is a schematic diagram of yet another comb spectrum generator provided by an embodiment of the present invention;

[0033] Figure 4 is a schematic diagram of yet another comb spectrum generator provided by an embodiment of the present invention;

[0034] Figure 5 is a schematic diagram of yet another comb spectrum generator provided by an embodiment of the present invention;

[0035] Figure 6 is a schematic diagram of an electronic device provided by an embodiment of the present invention. Detailed implementation manners

[0036] In order to enable those skilled in the art to better understand the solution of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily need to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0038] An embodiment of the present invention provides a comb spectrum generator. The bias module of the comb spectrum generator drives the odd-order comb spectrum generation module or the even-order comb spectrum generation module through the selection module, and can select to generate odd harmonics or even harmonics according to requirements. It has a variety of application scenarios, which is conducive to improving the applicability and flexibility of the comb spectrum generator. Figure 1 is a schematic diagram of a comb spectrum generator provided by an embodiment of the present invention. Refer to Figure 1 , the comb spectrum generator includes: a bias module 110, an input matching module 120, a selection module 130, an odd-order comb spectrum generation module 140, an even-order comb spectrum generation module 150, and an output matching module 160.

[0039] The bias module 110 is connected to the input matching module 120, the input matching module 120 is further connected to the selection module 130, the selection module 130 is respectively connected to the odd-order comb spectrum generation module 140 and the even-order comb spectrum generation module 150, and both the odd-order comb spectrum generation module 140 and the even-order comb spectrum generation module 150 are connected to the output matching module 160; the odd-order comb spectrum generation module 140 includes a first odd-order pulse generation unit 141, an odd-order intermediate matching unit 142, and a second odd-order pulse generation unit 143 connected in sequence; among them, step diodes are provided in the first odd-order pulse generation unit 141, the second odd-order pulse generation unit 143, and the even-order comb spectrum generation module 150. The bias module 110 is used to provide a bias voltage; the input matching module 120 is used to perform impedance matching on the input signal; the selection module 130 is used to control the input signal to be input to the odd-order comb spectrum generation module 140 or the even-order comb spectrum generation module 150; the odd-order intermediate matching unit 143 is used to perform impedance matching on the first odd-order pulse generation unit 141 and the second odd-order pulse generation unit 143; the first odd-order pulse generation unit 141 and the second odd-order pulse generation unit 143 are used to generate odd harmonics; the even-order comb spectrum generation module 150 is used to generate even harmonics; the output matching module 160 is used to perform impedance matching on odd harmonics or even harmonics.

[0040] Specifically, the bias module 110 provides a suitable bias voltage for the step diodes in the first odd-order pulse generation unit 141, the second odd-order pulse generation unit 143, and the even-order comb spectrum generation module 150, so that the step diodes in the first odd-order pulse generation unit 141, the second odd-order pulse generation unit 143, and the even-order comb spectrum generation module 150 generate current steps. The input signal is input to the input matching module 120 through the bias module 110, and the input matching module 120 performs impedance matching on the input signal, so that the input signal matches the impedance of the odd-order comb spectrum generation module 140 or the even-order comb spectrum generation module 150, thereby reducing the loss of the input signal.

[0041] The selection module 130 selects the output path of the input signal. Among them, the selection module 130 has two output paths, one of which is connected to the odd-order comb spectrum generation module 140, and the other output path is connected to the even-order comb spectrum generation module 150. Exemplarily, the selection module 130 can be a single-pole double-throw switch. When the input signal is input to the odd-order comb spectrum generation module 140, the input matching module 120 performs impedance matching between the input signal and the odd-order comb spectrum generation module 140, and the odd-order comb spectrum generation module 140 generates odd harmonics according to the impedance-matched input signal; when the input signal is input to the odd-order comb spectrum generation module 140, the input matching module 120 performs impedance matching between the input signal and the even-order comb spectrum generation module 150, and the even-order comb spectrum generation module 150 generates even harmonics according to the impedance-matched input signal.

[0042] Among them, when the input signal is input to the odd-order comb spectrum generation module 140 through the selection module 130, the step diodes in the first odd-order pulse generation unit 141 and the second odd-order pulse generation unit 143 obtain step currents, and the step diodes in the first odd-order pulse generation unit 141 and the second odd-order pulse generation unit 143 compress the rising edge and the falling edge of the input signal, so that the rising edge and the falling edge of the input signal become steep, and further make the waveform of the input signal approach a square wave. It should be noted that from the theory of Fourier series, when calculating the Fourier coefficients of a function that satisfies the square wave characteristics, the integral values of the even harmonic integral terms in the positive half cycle and the negative half cycle within one period are equal in magnitude and opposite in sign, and cancel each other out, resulting in the coefficient of the even harmonic being zero. That is to say, when the input signal is a square wave, during the process of exciting the harmonics of the input signal, the harmonics excited by the input signal only include odd harmonics. The odd-order comb spectrum generation module 140 transforms the waveform of the input signal and excites the harmonics of the input signal through the step diodes in the first odd-order pulse generation unit 141 and the second odd-order pulse generation unit 143. During this process, the waveform of the input signal approaches a square wave, and the input signal generates rich odd harmonics, thereby realizing the suppression of even harmonics.

[0043] In the embodiment of the present invention, the bias module 110 drives the first odd-order pulse generation unit 141, the second odd-order pulse generation unit 143, and the even-order comb spectrum generation module 150, and the selection module 130 selects the output path of the input signal to control the input signal to be input into the odd-order comb spectrum generation module 140 or the even-order comb spectrum generation module 150, so as to realize the selection of the generation of odd harmonics or even harmonics. The bias module 110 of the embodiment of the present invention drives the odd-order comb spectrum generation module 140 or the even-order comb spectrum generation module 150 through the selection module, and can select to generate odd harmonics or even harmonics according to requirements, with a variety of applicable scenarios, which is beneficial to improving the applicability and flexibility of the comb spectrum generator.

[0044] Figure 2 FIG. is a schematic diagram of another comb spectrum generator provided by an embodiment of the present invention. On the basis of the above embodiment, optionally, referring to Figure 2 , the first odd-order pulse generation unit 141 includes: a first step diode D1 and a second step diode D2.

[0045] The anode of the first step diode D1 is connected to the selection module 130, and the cathode of the first step diode D1 is connected to the odd-order intermediate matching unit 142; the anode of the second step diode D2 is connected to the cathode of the first step diode D1; the cathode of the second step diode D2 is connected to the anode of the first step diode D1.

[0046] On the basis of the above embodiments, optionally, continue to refer to Figure 2 , the second odd-order pulse generation unit 143 includes: a third step diode D3 and a fourth step diode D4.

[0047] The anode of the third step diode D3 is connected to the odd-order intermediate matching unit 142, and the cathode of the third step diode D3 is connected to the output matching module 160; the anode of the fourth step diode D4 is connected to the cathode of the third step diode D3; the cathode of the fourth step diode D4 is connected to the anode of the third step diode D3.

[0048] Specifically, the step diode has the characteristics of storing charge when forward-conducting and quickly releasing charge when reverse-blocking. Its reverse recovery time is extremely short, and it can realize the state transition from conduction to cutoff in an extremely short time, generating a steep voltage or current change. In the reverse parallel structure, when the input signal is in the positive half-cycle, one diode is forward-conducting and the other diode is reverse-blocking; when the input signal is in the negative half-cycle, the conduction and cutoff states are opposite. The two diodes work alternately, using their respective step characteristics to process the input signal.

[0049] The first step diode D1 and the second step diode D2 are reversely connected in parallel. The first step diode D1 and the second step diode D2 work alternately, and use their own step characteristics to transform the waveform of the input signal and excite the harmonics of the input signal. Similarly, the third step diode D3 and the fourth step diode D4 are reversely connected in parallel, and the third step diode D3 and the fourth step diode D4 also use their own step characteristics to transform the waveform of the input signal and excite the harmonics of the input signal.

[0050] The input signal is output to the third step diode D3 and the fourth step diode D4 for further processing after being processed by the first step diode D1 and the second step diode D2, so as to improve the power of the generated harmonic signal and enrich the generated harmonics. Among them, the odd-order intermediate matching unit 142 matches the impedance between the first step diode D1 and the third step diode D3, and the odd-order intermediate matching unit 142 matches the impedance between the second step diode D2 and the fourth step diode D4, so as to reduce the loss of signal transmission and further improve the power of the generated harmonic signal.

[0051] Figure 3 It is a schematic diagram of another comb spectrum generator provided by an embodiment of the present invention. On the basis of the above embodiments, optionally, referring to Figure 3 , the even-order comb spectrum generating module 150 includes: an even-order splitting unit 151, a first even-order pulse generating unit 152, a second even-order pulse generating unit 153, and an even-order synthesizing unit 154.

[0052] The input end of the even-order splitting unit 151 is connected to the selection module 130. The first output end and the second output end of the even-order splitting unit 151 are respectively connected to the first even-order pulse generating unit 152 and the second even-order pulse generating unit 153. The first even-order pulse generating unit 152 is also connected to the even-order synthesizing unit 154, and the second even-order pulse generating unit 153 is also connected to the even-order synthesizing unit 154. The even-order synthesizing unit 154 is also connected to the output matching module 160. The even-order splitting unit 151 is used to split the input signal into a first excitation signal and a second excitation signal that are equal in amplitude and opposite in phase; the first even-order pulse generating unit 152 is used to generate a first harmonic signal according to the first excitation signal; the second even-order pulse generating unit 153 is used to generate a second harmonic signal according to the second excitation signal; the even-order synthesizing unit 154 is used to synthesize the first harmonic signal and the second harmonic signal to generate even-order harmonics.

[0053] Specifically, when the input signal is input to the even comb spectrum generation module 150 through the selection module 130, the even splitting unit 151 splits the input signal into two paths, namely the first excitation signal and the second excitation signal. Among them, the first excitation signal and the second excitation signal have the same amplitude and are in opposite phases. Exemplarily, the even splitting unit 151 can be a center-tapped transformer, and the secondary winding of the center-tapped transformer is divided into two parts with equal number of turns. Due to the magnetic field generated by these two parts of the winding in the same magnetic core, according to the right-hand rule of electromagnetic induction, the induced electromotive forces generated in the two windings are equal in magnitude but opposite in direction. The two signals led out from the center tap form excitation signals with equal amplitude and opposite phases.

[0054] The first even pulse generation unit 152 obtains the first excitation signal and excites the harmonics of the first excitation signal to obtain the first harmonic signal. The second even pulse generation unit 153 obtains the second excitation signal and excites the harmonics of the second excitation signal to obtain the second harmonic signal. Since the first excitation signal and the second excitation signal are in opposite phases, therefore, the odd harmonics in the first harmonic signal generated according to the first excitation signal and the odd harmonics in the second harmonic signal generated according to the second excitation signal are also in opposite phases, but the even harmonics in the first harmonic signal generated according to the first excitation signal and the even harmonics in the second harmonic signal generated according to the second excitation signal are in the same phase.

[0055] The even synthesis unit 154 obtains the first harmonic signal and the second harmonic signal and synthesizes the first harmonic signal and the second harmonic signal. Exemplarily, the even synthesis unit 154 can be an output power divider. Since the odd harmonics in the first harmonic signal and the odd harmonics in the second harmonic signal are in opposite phases, and the even harmonics in the first harmonic signal and the even harmonics in the second harmonic signal are in the same phase, therefore, when synthesizing the first harmonic signal and the second harmonic signal, the odd harmonics in the first harmonic signal and the odd harmonics in the second harmonic signal cancel each other out, and the even harmonics in the first harmonic signal and the even harmonics in the second harmonic signal are superimposed on each other to generate even harmonics and suppress odd harmonics.

[0056] Figure 4 is a schematic diagram of another comb spectrum generator provided by an embodiment of the present invention. On the basis of the above embodiments, optionally, referring to Figure 4 , the first even pulse generation unit 152 includes: a fifth step diode D5.

[0057] The anode of the fifth step diode D5 is connected to the even-numbered splitting unit 151, and the cathode of the fifth step diode D5 is connected to the even-numbered combining unit 154. When the first excitation signal is input into the fifth step diode D5, under the action of the rising edge of the first excitation signal, the fifth step diode D5 conducts forward and starts to store charge. Under the action of the falling edge of the first excitation signal, the fifth step diode D5 changes from the forward conduction state to the reverse cut-off state, and the charge stored in the fifth step diode D5 starts to be rapidly released, forming a reverse current spike. Due to the step change of the junction capacitance and the rapid change of the reverse current spike, rich harmonics are generated, that is, the first harmonic signal.

[0058] Continue to refer to Figure 4 , the second even-numbered pulse generating unit 153 includes: a sixth step diode D6.

[0059] The anode of the sixth step diode D6 is connected to the even-numbered splitting unit 151, and the cathode of the sixth step diode D6 is connected to the even-numbered combining unit 154. When the second excitation signal is input into the sixth step diode D6, under the action of the rising edge of the second excitation signal, the sixth step diode D6 conducts forward and starts to store charge. Under the action of the falling edge of the second excitation signal, the sixth step diode D6 changes from the forward conduction state to the reverse cut-off state, and the charge stored in the sixth step diode D6 starts to be rapidly released, forming a reverse current spike. Due to the step change of the junction capacitance and the rapid change of the reverse current spike, rich harmonics are generated, that is, the second harmonic signal.

[0060] Figure 5 is a schematic diagram of another comb spectrum generator provided by an embodiment of the present invention. On the basis of the above embodiments, optionally, refer to Figure 5 , the even-numbered splitting unit 151 includes: an input power splitter 1511, a phase shifter 1512, and an attenuator 1513.

[0061] The input power splitter 1511 is connected to the selection module 130. The input power splitter 1511 is also respectively connected to the phase shifter 1512 and the attenuator 1513. The phase shifter 1512 is also connected to the first even-numbered pulse generating unit 152, and the attenuator 1513 is also connected to the second even-numbered pulse generating unit 153. The input power splitter 1511 is used to split the input signal into a first split signal and a second split signal; the phase shifter 1512 is used to phase-shift the first split signal to obtain a first excitation signal; the attenuator 1513 is used to reduce the amplitude of the second split signal to obtain a second excitation signal.

[0062] An embodiment of the present invention also provides an electronic device. Figure 6 is a schematic diagram of an electronic device provided by an embodiment of the present invention. Refer to Figure 6, the electronic device 10 includes the comb spectrum generator 100 provided in any of the above embodiments.

[0063] Among them, the electronic device 10 provided in this embodiment has the beneficial effects of the comb spectrum generator 100 provided in any of the above embodiments, which will not be elaborated here.

[0064] It should be understood that various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is imposed herein.

[0065] The above specific embodiments do not constitute a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub - combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A comb spectrum generator, characterized in that: include: A bias module, an input matching module, a selection module, an odd-order comb spectrum generation module, an even-order comb spectrum generation module and an output matching module; The bias module is connected to the input matching module, the input matching module is also connected to the selection module, the selection module is also connected to the odd comb spectrum generation module and the even comb spectrum generation module respectively, the odd comb spectrum generation module and the even comb spectrum generation module are both connected to the output matching module; the odd comb spectrum generation module includes a first odd pulse generation unit, an odd intermediate matching unit and a second odd pulse generation unit connected in sequence; wherein the first odd pulse generation unit, the second odd pulse generation unit and the even comb spectrum generation module are provided with step diodes; The bias module is used to provide a bias voltage; the input matching module is used to perform impedance matching on the input signal; the selection module is used to control the input signal to be input to the odd-order comb spectrum generation module or the even-order comb spectrum generation module; The odd intermediate matching unit is used to perform impedance matching on the first odd pulse generating unit and the second odd pulse generating unit; the first odd pulse generating unit and the second odd pulse generating unit are used to generate odd harmonics; the even comb spectrum generating module is used to generate even harmonics; the output matching module is used to perform impedance matching on odd harmonics or even harmonics.

2. The comb spectrum generator according to claim 1, characterized in that: The first odd pulse generating unit comprises: a first step diode and a second step diode; The anode of the first step diode is connected to the selection module, and the cathode of the first step diode is connected to the odd-order intermediate matching unit; the anode of the second step diode is connected to the cathode of the first step diode; and the cathode of the second step diode is connected to the anode of the first step diode.

3. The comb spectrum generator according to claim 1, characterized in that: The second odd pulse generating unit comprises: a third step diode and a fourth step diode; The anode of the third step diode is connected to the odd-order intermediate matching unit, and the cathode of the third step diode is connected to the output matching module; the anode of the fourth step diode is connected to the cathode of the third step diode; and the cathode of the fourth step diode is connected to the anode of the third step diode.

4. The comb spectrum generator according to claim 1, characterized in that: The even-order comb spectrum generation module comprises: an even-order splitting unit, a first even-order pulse generating unit, a second even-order pulse generating unit and an even-order synthesis unit; The input end of the even-order splitting unit is connected to the selection module, the first output end and the second output end of the even-order splitting unit are respectively connected to the first even-order pulse generating unit and the second even-order pulse generating unit, the first even-order pulse generating unit is also connected to the even-order synthesis unit, the second even-order pulse generating unit is also connected to the even-order synthesis unit, and the even-order synthesis unit is also connected to the output matching module; The even-order splitting unit is used to split the input signal into a first excitation signal and a second excitation signal of equal amplitude and opposite phases; the first even-order pulse generating unit is used to generate a first harmonic signal according to the first excitation signal; the second even-order pulse generating unit is used to generate a second harmonic signal according to the second excitation signal; the even-order synthesis unit is used to synthesize the first harmonic signal and the second harmonic signal to generate even harmonics.

5. The comb spectrum generator according to claim 4, characterized in that: The first even pulse generating unit comprises: a fifth step diode; The anode of the fifth step diode is connected to the even-order splitting unit, and the cathode of the fifth step diode is connected to the even-order combining unit; and / or, The second even pulse generating unit comprises: a sixth step diode; An anode terminal of the sixth step diode is connected to the even-order splitting unit, and a cathode terminal of the sixth step diode is connected to the even-order combining unit.

6. The comb spectrum generator according to claim 4, characterized in that: The even-order splitting unit includes: a center-tapped transformer.

7. The comb spectrum generator according to claim 4, characterized in that: The even-order splitting unit comprises: an input power divider, a phase shifter and an attenuator; The input power divider is connected to the selection module, the input power divider is also connected to the phase shifter and the attenuator respectively, the phase shifter is also connected to the first even pulse generating unit, and the attenuator is also connected to the second even pulse generating unit; The input power divider is used to split the input signal into a first split signal and a second split signal; the phase shifter is used to shift the phase of the first split signal to obtain a first excitation signal; and the attenuator is used to reduce the amplitude of the second split signal to obtain a second excitation signal.

8. The comb spectrum generator according to claim 4, characterized in that: The even-order synthesis unit comprises: an output power divider.

9. The comb spectrum generator according to any one of claims 1 to 8, characterized in that: The selection module includes: a single-pole double-throw switch.

10. An electronic device, characterized in that: Comprising the comb spectrum generator as claimed in any one of claims 1-9.

Images