Multi-channel frequency multiplication module applied to high frequency

Abstract

The utility model provides a multi-channel frequency multiplication module applied to high frequency, which mainly adopts a cascade output switch to select and switch frequency multiplication modules of three different frequency bands so as to realize frequency coverage of ultra wide band, and also adopts a multi-channel frequency multiplication module with multiple frequency bands. A single-pole single-throw switch is adopted to build a voltage-controlled attenuator circuit for a frequency multiplication module with high frequency, so that the insertion loss influencing the voltage-controlled attenuator circuit can be reduced, and the output power of the frequency multiplication module is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency doubling, and particularly relates to a multi-channel frequency doubling module applied to high frequencies. Background Technique

[0002] The frequency doubling module mainly consists of an amplifier, a frequency doubler, a filter, and a voltage-controlled attenuator. The voltage-controlled attenuator often uses diodes to build a voltage-controlled attenuator circuit to ensure the output power. However, when the frequency doubling module is split into a multi-channel frequency doubling module according to different frequencies, the frequency of a certain frequency doubling channel in the multi-channel frequency doubling module is relatively high, and the junction capacitance of the diode will seriously affect the insertion loss of the voltage-controlled attenuation circuit, affecting the output power of the frequency doubling module. Currently, usually, the method of replacing the voltage-controlled attenuator is adopted, and the cost is relatively high. Content of the Utility Model

[0003] The purpose of the utility model is to provide a multi-channel frequency doubling module applied to high frequencies. The multi-channel frequency doubling module mainly uses a cascaded output switch to select and switch three different frequency band frequency doubling modules to achieve ultra-wideband frequency coverage. Moreover, for the frequency doubling module with a relatively high frequency, a single-pole single-throw switch is used to build a voltage-controlled attenuator circuit, which can reduce the insertion loss affecting the voltage-controlled attenuation circuit and ensure the output power of the frequency doubling module.

[0004] To solve the above technical problems, the utility model adopts the following scheme:

[0005] A multi-channel frequency doubling module applied to high frequencies includes a first frequency doubling channel, a second frequency doubling channel, and a third frequency doubling channel divided by different frequency bands. One ends of the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel are all connected to an input port, and a radio frequency signal is provided to the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel through the input port. Moreover, the other ends of the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel adopt a cascaded output switch, so that the radio frequency signals passing through the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel are switched through the cascaded output switch for final output.

[0006] Further, the radio frequency signal provided by the input port is a 10 MHz - 13.5 GHz radio frequency signal, the frequency band of the first frequency doubling channel is 20 GHz - 50 GHz, the frequency band of the second frequency doubling channel is 3 GHz - 20 GHz, and the frequency band of the third frequency doubling channel is 10 MHz - 3 GHz, so that the finally output radio frequency signal is a 10 MHz - 50 GHz radio frequency signal.

[0007] Further, the cascaded output switch includes a first-stage output switch, a second-stage output switch, and a third-stage output switch. One end of the third-stage output switch is connected to the output end of the third harmonic generation channel and the ground terminal. One end of the second-stage output switch is connected to the second harmonic generation channel and the other end of the third-stage output switch. One end of the first-stage output switch is connected to the first harmonic generation channel and the other end of the third-stage output switch. By controlling the first-stage output switch, the second-stage output switch, and the third-stage output switch, different frequency bands of harmonic generation channels can be selected for the final output.

[0008] Further, the first harmonic generation channel includes a first voltage-controlled attenuator, and the first voltage-controlled attenuator uses a single-pole single-throw switch to build a voltage-controlled attenuator circuit.

[0009] Further, the second harmonic generation channel includes a second voltage-controlled attenuator, and the second voltage-controlled attenuator uses four diodes to build a voltage-controlled attenuator circuit.

[0010] Further, the third harmonic generation channel includes a third voltage-controlled attenuator, and the third voltage-controlled attenuator uses an SMP1307-005LF PIN diode to build a voltage-controlled attenuator circuit.

[0011] Further, the input port provides a radio frequency signal to the first harmonic generation channel, the second harmonic generation channel, and the third harmonic generation channel through a first input switch and a second input switch. The output end of the input port is connected to one end of the first input switch. The other end of the first input switch is connected to the input end of the first harmonic generation channel and one end of the second input switch. The other end of the second input switch is connected to the input ends of the second harmonic generation channel and the third harmonic generation channel. By controlling the first input switch and the second input switch, a radio frequency signal can be selected to be provided to different frequency bands of harmonic generation channels.

[0012] Further, the first harmonic generation channel, the second harmonic generation channel, and the third harmonic generation channel all include an amplifier, a frequency multiplier, a filter, a radio frequency switch, and a voltage-controlled attenuator, which are used to amplify and multiply the radio frequency signal.

[0013] Further, the first harmonic generation channel, the second harmonic generation channel, and the third harmonic generation channel all include a radio frequency switch. The radio frequency switch is a single-pole single-throw switch, and the single-pole single-throw switch is controlled by TTL to achieve pulse modulation.

[0014] Advantages of the present utility model:

[0015] The present utility model provides a multi-channel frequency multiplication module applied to high frequencies. The multi-channel frequency multiplication module mainly uses a cascaded output switch to select and switch three different frequency band frequency multiplication modules to achieve ultra-wideband frequency coverage. Moreover, for the frequency multiplication module with a higher frequency, a single-pole single-throw switch is used to build a voltage-controlled attenuator circuit, which can reduce the insertion loss affecting the voltage-controlled attenuation circuit and ensure the output power of the frequency multiplication module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the multi-channel frequency multiplication module in Embodiment 1 of the present utility model;

[0017] Figure 2 It is a schematic circuit diagram of the multi-channel frequency multiplication module in Embodiment 1 of the present utility model;

[0018] Figure 3 It is a schematic diagram of the topology of the pulse modulation switch in Embodiment 1 of the present utility model;

[0019] Figure 4 It is a schematic diagram of the voltage-controlled attenuator circuit built with a single-pole single-throw switch in Embodiment 1 of the present utility model;

[0020] Figure 5 It is a schematic diagram of the voltage-controlled attenuator circuit built with four diodes in Embodiment 1 of the present utility model;

[0021] Figure 6 It is a schematic diagram of the voltage-controlled attenuator circuit built with SMP1307-005LF PIN diodes in Embodiment 1 of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be further described in detail below in conjunction with the drawings and specific embodiments, but the embodiments of the present utility model are not limited thereto.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0024] In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "provided with", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments:

[0026] Embodiment 1

[0027] The present utility model provides a multi-channel frequency doubling module applied to high frequencies, which is applied to the VNA1000A type 10 MHz - 50 GHz version vector network analyzer. It mainly doubles and amplifies the 10 MHz - 13.5 GHz radio frequency signal output by the frequency synthesizer. Specifically, in order to ensure the harmonic index of the output of the frequency doubling module, the frequencies covered by the multi-channel frequency doubling module are split into three different frequency bands. Then, different frequency doubling channels need to be designed for different frequency bands, so that the 10 MHz - 13.5 GHz radio frequency signal provided by the frequency synthesizer enters the multi-channel frequency doubling module from the input port, and then, under the switching of the switch, it is amplified and doubled in different frequency bands respectively, so that the final output frequency is 10 MHz - 50 GHz.

[0028] In this embodiment, the three different frequency bands in the multi-channel frequency doubling module respectively correspond to a first frequency doubling channel, a second frequency doubling channel, and a third frequency doubling channel. The frequency band of the first frequency doubling channel is 20 GHz - 50 GHz, the frequency band of the second frequency doubling channel is 3 GHz - 20 GHz, and the frequency band of the third frequency doubling channel is 10 MHz - 3 GHz. The first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel are respectively used to double and amplify the 10 MHz - 13.5 GHz radio frequency signal provided by the frequency synthesizer, so that the finally output radio frequency signal is a 10 MHz - 50 GHz radio frequency signal, which can meet the ultra-wideband frequency coverage.

[0029] In order to realize doubling and amplifying the 10 MHz - 13.5 GHz radio frequency signal provided by the frequency synthesizer through the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel respectively, as Figure 1As shown, between the first frequency doubling channel, the second frequency doubling channel, the third frequency doubling channel and the input port, the first input switch and the second input switch are used to respectively provide 10 MHz - 13.5 GHz RF signals to the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel through switch switching. Specifically, the output end of the input port is connected to one end of the first input switch, the other end of the first input switch is connected to the input end of the first frequency doubling channel and one end of the second input switch, and the other end of the second input switch is connected to the input ends of the second frequency doubling channel and the third frequency doubling channel. Then, by controlling the first input switch and the second input switch, RF signals can be selectively provided to the frequency doubling channels of different frequency bands.

[0030] Moreover, in order to finally output the signals after frequency doubling and amplification through the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel, as Figure 1 shown, the other ends of the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel adopt a cascaded output switch, so that the RF signals passing through the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel are finally output through the switching of the cascaded output switch. Specifically, the cascaded output switch includes a first-stage output switch, a second-stage output switch, and a third-stage output switch. One end of the third-stage output switch is connected to the output end of the third frequency doubling channel and the ground terminal. One end of the second-stage output switch is connected to the second frequency doubling channel and the other end of the third-stage output switch. One end of the first-stage output switch is connected to the first frequency doubling channel and the other end of the third-stage output switch. By controlling the first-stage output switch, the second-stage output switch, and the third-stage output switch, the frequency doubling channels of different frequency bands can be selectively used for final output.

[0031] Based on the above principle, the multi-channel frequency doubling module can, through controlling switch switching, cause the 10 MHz - 13.5 GHz RF signals provided by the frequency synthesizer to be respectively frequency doubled and amplified through the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel of different frequency bands, and finally output RF signals of corresponding frequencies.

[0032] Specifically, as Figure 2 shown, the multi-channel frequency doubling module includes three frequency doubling channels of different frequency bands. Moreover, a combiner switch is used for switching between different frequency doubling channels so as to finally output a single RF signal. Then, within each of the different frequency doubling channels, there are an amplifier, a frequency doubler, a filter, an RF switch, and a voltage-controlled attenuator, which are used for amplifying and frequency doubling the RF signal. Among them, the first frequency doubling channel includes two groups of frequency doubling units. Each group of frequency doubling units includes an amplifier, a frequency doubler, and a filter. The two frequency doubling units are connected through a selection switch to achieve frequency doubling of different frequencies. Moreover, in the first frequency doubling channel, a filter bank is used as the filter, and by filtering the RF signals of different frequencies through the filter bank, the filtering can be made more pure.

[0033] The first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel are each provided with a radio frequency switch. The radio frequency switch is a single-pole single-throw switch. By controlling the single-pole single-throw switch through TTL, the multi-channel frequency doubling module can have a pulse modulation function. The topology diagram of the pulse modulation switch is as shown in Figure 3 shown. Moreover, a multi-stage single-pole single-throw switch can achieve a high off ratio.

[0034] In addition, the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel are each further provided with a voltage-controlled attenuator. In the prior art, a voltage-controlled attenuator circuit is usually built with diodes. For the first frequency doubling channel with a relatively high frequency, if a voltage-controlled attenuator circuit is built with diodes, the junction capacitance of the diodes will seriously affect the insertion loss of the voltage-controlled attenuation circuit, resulting in an impact on the output power of the first frequency doubling channel. And, as can be seen in Figure 2 it, the first voltage-controlled attenuator in the first frequency doubling channel is arranged at the end of the output port, that is, the first voltage-controlled attenuator is connected to the first-stage output switch. And the voltage-controlled attenuator arranged at the end of the output port will be greatly affected. If the method of replacing the voltage-controlled attenuator is adopted, the cost is relatively high.

[0035] Therefore, for the first frequency doubling channel with a relatively high frequency, the present utility model uses a single-pole single-throw switch to build a voltage-controlled attenuator circuit, and its characteristics are as shown in Figure 4 shown. Using a single-pole single-throw switch to build a voltage-controlled attenuator circuit can avoid the serious influence of the junction capacitance of the diodes on the insertion loss of the voltage-controlled attenuation circuit when the frequency is relatively high, resulting in an impact on the output power of the first frequency doubling channel.

[0036] The second frequency doubling channel includes a second voltage-controlled attenuator. The second voltage-controlled attenuator uses four diodes to build a voltage-controlled attenuator circuit, and its principle is as shown in Figure 5 shown.

[0037] The third frequency doubling channel includes a third voltage-controlled attenuator. The third voltage-controlled attenuator uses an SMP1307-005LF PIN diode to build a voltage-controlled attenuator circuit, and its principle is as shown in Figure 6 shown.

[0038] In summary, the present utility model provides a multi-channel frequency doubling module applied to high frequencies. The multi-channel frequency doubling module mainly uses a cascaded output switch to select and switch three different frequency band frequency doubling modules to achieve ultra-wideband frequency coverage. Moreover, for the frequency doubling module with a relatively high frequency, using a single-pole single-throw switch to build a voltage-controlled attenuator circuit can reduce the insertion loss affecting the voltage-controlled attenuation circuit and ensure the output power of the frequency doubling module.

[0039] It is understandable that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present utility model. However, the present utility model is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present utility model, and these modifications and improvements are also regarded as the protection scope of the present utility model.

Claims

1. A multi-channel frequency doubling module applied to high frequencies, characterized in that, It includes a first frequency doubling channel, a second frequency doubling channel, and a third frequency doubling channel divided by different frequency bands. One end of the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel are all connected to an input port, and a radio frequency signal is provided to the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel through the input port. The other ends of the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel adopt a cascaded output switch, so that the radio frequency signals passing through the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel are switched by the cascaded output switch for final output.

2. The multi-channel frequency doubling module applied to high frequencies according to claim 1, wherein The radio frequency signal provided by the input port is a 10 MHz - 13.5 GHz radio frequency signal, the frequency band of the first frequency doubling channel is 20 GHz - 50 GHz, the frequency band of the second frequency doubling channel is 3 GHz - 20 GHz, and the frequency band of the third frequency doubling channel is 10 MHz - 3 GHz, so that the finally output radio frequency signal is a 10 MHz - 50 GHz radio frequency signal.

3. The multi-channel frequency doubling module applied to high frequencies according to claim 2, wherein The cascaded output switch includes a first-stage output switch, a second-stage output switch, and a third-stage output switch. One end of the third-stage output switch is connected to the output end and the ground end of the third frequency doubling channel. One end of the second-stage output switch is connected to the second frequency doubling channel and the other end of the third-stage output switch. One end of the first-stage output switch is connected to the first frequency doubling channel and the other end of the third-stage output switch. By controlling the first-stage output switch, the second-stage output switch, and the third-stage output switch, different frequency band frequency doubling channels can be selected for final output.

4. The multi-channel frequency doubling module applied to high frequencies according to claim 2, wherein, The first frequency doubling channel includes a first voltage-controlled attenuator, and the first voltage-controlled attenuator uses a single-pole single-throw switch to build a voltage-controlled attenuator circuit.

5. The multi-channel frequency doubling module applied to high frequencies according to claim 2, wherein The second frequency doubling channel includes a second voltage-controlled attenuator, and the second voltage-controlled attenuator uses four diodes to build a voltage-controlled attenuator circuit.

6. The multi-channel frequency doubling module applied to high frequencies according to claim 2, characterized in that The third frequency doubling channel includes a third voltage-controlled attenuator, and the third voltage-controlled attenuator uses an SMP1307-005LF PIN diode to build a voltage-controlled attenuator circuit.

7. A multi-channel frequency doubling module applied to high frequencies according to claim 1, characterized in that, The input port provides a radio frequency signal to the first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel through a first input switch and a second input switch. The output end of the input port is connected to one end of the first input switch. The other end of the first input switch is connected to the input end of the first frequency doubling channel and one end of the second input switch. The other end of the second input switch is connected to the input end of the second frequency doubling channel and the input end of the third frequency doubling channel. By controlling the first input switch and the second input switch, a radio frequency signal can be selected to be provided to different frequency band frequency doubling channels.

8. A multi-channel frequency doubling module applied to high frequencies according to claim 1, characterized in that, The first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel all include an amplifier, a frequency doubler, a filter, a radio frequency switch, and a voltage-controlled attenuator, which are used to amplify and double the frequency of the radio frequency signal.

9. A multi-channel frequency doubling module applied to high frequencies according to claim 1, characterized in that, The first frequency doubling channel, the second frequency doubling channel, and the third frequency doubling channel all include a radio frequency switch. The radio frequency switch is a single-pole single-throw switch, and the single-pole single-throw switch is controlled by TTL to achieve pulse modulation.

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