An ultra-high precision amplitude modulation and phase modulation matrix network

Abstract

An ultra-high precision amplitude modulation and phase modulation matrix network includes a plurality of first ports and a second port, the first port is connected to a first power distribution module, the first power distribution module includes a plurality of first signal transmission channels, the first power distribution module evenly distributes the signal input from the first port, and transmits it via the first signal transmission channel, each first signal transmission channel is connected to a voltage-controlled phase module, each voltage-controlled phase module is connected to a voltage-controlled attenuation module, the voltage-controlled attenuation module is connected to a second power distribution module, and the signal transmission end of the second power distribution module is connected to the second port. The present invention adopts a voltage-controlled attenuation chip and a phase shift chip, as well as a 16-bit high-precision digital-to-analog converter for control, the attenuation range can reach 0-90dB, the attenuation accuracy can be controlled within 0.01dB, the phase adjustment range can reach 0-360°, the phase accuracy can be controlled within 0.01°, and the structural configuration can be flexibly transformed.

Description

Technical Field

[0001] The present invention relates to the technical field of signal communication, and in particular to an ultra-high precision amplitude modulation and phase modulation matrix network. Background Art

[0002] An attenuator is an electronic component that introduces a predetermined attenuation circuit to provide attenuation within a specified frequency range. It is widely used in electronic equipment. It is mainly used to adjust the size of the signal in the circuit and improve impedance matching. In the comparison method measurement circuit, it can be used to directly read the attenuation value of the network under test.

[0003] The attenuation step of the traditional attenuator is only up to seven bits, and its attenuation power is 0.25dB, and the accuracy is not high, and there is a large error. The step of the traditional digital phase chip is up to eight bits, and the accuracy is also not high, and there is a large error, which cannot meet the test requirements of higher step accuracy. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an amplitude modulation and phase modulation matrix network with improved accuracy and reduced errors.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] An ultra-high precision amplitude modulation and phase modulation matrix network, comprising a plurality of first ports and a plurality of second ports, wherein the first port and the second port are signal transmission ports, the first port is connected to a first power distribution module, the first power distribution module comprises a plurality of first signal transmission channels, the first power distribution module evenly distributes the signal inputted from the first port into a plurality of equalized signals, and transmits the signals via the first signal transmission channels, each of the first signal transmission channels is connected to a voltage-controlled phase module, each of the voltage-controlled phase modules is connected to a voltage-controlled attenuation module, the voltage-controlled phase module is used to perform phase shift adjustment on the equalized signals, the voltage-controlled attenuation module is used to perform attenuation adjustment on the equalized signals after phase shift adjustment to form an attenuated signal, the voltage-controlled attenuation module is connected to a second power distribution module, the signal transmission end of the second power distribution module is connected to the second port, the second power distribution module is used to evenly distribute the signal inputted from the second port, the second power distribution module comprises a plurality of second signal transmission channels, each of the second signal transmission channels is connected to a voltage-controlled attenuation module;

[0007] A number of signals enter the first power distribution module through the first port, or enter the second power distribution module through the second port. After being evenly divided by the first power distribution module or the second power distribution module, a number of evenly divided signals are formed. The signals are sequentially passed through the voltage-controlled phase module and the voltage-controlled attenuation module through the first signal transmission channel, or sequentially passed through the voltage-controlled attenuation module and the voltage-controlled phase module through the second signal transmission channel. Phase and attenuation of the signals are adjusted, and the signals are summarized in the second power distribution module or the first power distribution module, and transmitted to the outside through the second port or the first port. The signals of the first port and the second port are reciprocal, and can be transmission entrances and exits of the signals, that is, when the first port is the transmission entrance, the second port is the transmission exit, and when the second port is the transmission entrance, the first port is the transmission exit.

[0008] Preferably, the second power distribution module includes a plurality of second signal transmission channels, the number of the second signal transmission channels is the same as the number of the first signal transmission channels, and the plurality of first signal transmission channels of the same first power distribution module are respectively connected to each second power distribution module, so that each output signal of the same first power distribution module is distributed to each second power distribution module.

[0009] Preferably, the attenuation range of the voltage-controlled attenuation module is 0-90dB.

[0010] Preferably, the phase adjustment range of the voltage-controlled phase module is 0-360°.

[0011] Preferably, the voltage-controlled attenuation module comprises:

[0012] A first attenuation adjustment unit, configured to perform preliminary attenuation adjustment on the inputted average signal to obtain a preliminary adjustment signal;

[0013] a second attenuation adjustment unit, connected to the first attenuation adjustment unit, and used for performing a further attenuation adjustment on the preliminary adjustment signal to obtain a secondary adjustment signal;

[0014] a third attenuation adjustment unit, connected to the second attenuation adjustment unit, and used for performing a third attenuation adjustment on the second adjustment signal to obtain a third adjustment signal;

[0015] The fourth attenuation adjustment unit is connected to the third attenuation adjustment unit and is used to perform final attenuation adjustment on the three adjustment signals to obtain the attenuated signal.

[0016] Preferably, the first power distribution module and the second power distribution module are both power dividers, and the power divider is configured with one input pin and several output pins, the input pin is connected to the first port or the second port, and the output pin is connected to the first signal transmission channel or the second signal transmission channel.

[0017] Preferably, the first attenuation adjustment unit is configured with a plurality of attenuation gear pins, a first input and output interchange pin and a second interchange pin, the second attenuation adjustment unit is configured with a plurality of attenuation gear pins, a third input and output interchange pin and a fourth interchange pin, the third attenuation adjustment unit is configured with a plurality of attenuation gear pins, a fifth input and output interchange pin and a sixth interchange pin, the fourth attenuation adjustment unit is configured with a plurality of attenuation gear pins, a seventh input and output interchange pin and an eighth interchange pin;

[0018] The attenuation gear pins are used to input attenuation signals, and the attenuation signals input into the attenuation gear pins are consistent;

[0019] The first input-output interchange pin is connected to the output pin of the first power distribution module, and the first input-output interchange pin is used to introduce the shared signal into the first attenuation adjustment unit;

[0020] The second interchange pin is connected to the third input / output interchange pin, and the second interchange pin is used to input the preliminary adjustment signal into the second attenuation adjustment unit;

[0021] The fifth input / output interchange pin is connected to the fourth interchange pin, and the fourth interchange pin is used to input the secondary adjustment signal into the third attenuation adjustment unit;

[0022] The seventh input / output interchange pin is connected to the sixth interchange pin, and the sixth interchange pin is used to input the tertiary adjustment signal into the fourth attenuation adjustment unit;

[0023] The eighth input / output pin of each of the digital attenuation modules is connected to the output pins of different first power distribution modules, and the eighth input / output interchange pin is used to input the attenuation signal into the second power distribution module.

[0024] Preferably, the first attenuation adjustment unit, the second attenuation adjustment unit and the fourth attenuation adjustment unit are all digital step attenuators, and the third attenuation adjustment unit is an analog step attenuator, wherein the model of the digital step attenuator is HMC1119.

[0025] The advantages and positive effects of the present invention are:

[0026] The present invention adopts a voltage-controlled attenuation chip and a phase shift chip, as well as a 16-bit high-precision digital-to-analog converter for control. The attenuation range can reach 0-90dB, with a step of 0.01dB, and the attenuation accuracy can be controlled within 0.01dB. The phase adjustment range can reach 0-360°, with a step of 0.01°, and the accuracy can be controlled within 0.01°. In addition, the structural configuration can be flexibly changed. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the topological structure of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the voltage-controlled attenuation module of the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0033] like Figure 1As shown, an ultra-high precision amplitude modulation and phase modulation matrix network described in the present invention includes a plurality of first ports and a plurality of second ports, the first port and the second port are signal transmission ports, the first port is connected to a first power distribution module, the first power distribution module includes a plurality of first signal transmission channels, the first power distribution module evenly distributes the signal input from the first port into a plurality of equally distributed signals, and transmits them through the first signal transmission channel, each first signal transmission channel is connected to a voltage-controlled phase module, the phase adjustment range of the voltage-controlled phase module is 0-360°, the step is 0.01°, the accuracy is controlled at 0.01°, each voltage-controlled phase module is connected to a voltage-controlled attenuation module, the attenuation range of the voltage-controlled attenuation module is 0-90dB, step 0.01dB, the attenuation accuracy is controlled within 0.01dB, the voltage-controlled phase module is used to adjust the phase shift of the average signal, the voltage-controlled attenuation module is used to attenuate the average signal after phase shift adjustment to form an attenuated signal, the voltage-controlled attenuation module is connected to the second power distribution module, the signal transmission end of the second power distribution module is connected to the second port, the second power distribution module is used to evenly distribute the signal input by the second port, the second power distribution module includes several second signal transmission channels, each second signal transmission channel is connected to a voltage-controlled attenuation module, the first power distribution module and the second power distribution module are both power dividers, and the power divider is configured with one input pin and several output pins.

[0034] A number of signals enter the first power distribution module through the first port, or enter the second power distribution module through the second port. After being evenly divided by the first power distribution module or the second power distribution module, a number of evenly divided signals are formed. The signals are sequentially passed through the voltage-controlled phase module and the voltage-controlled attenuation module through the first signal transmission channel, or sequentially passed through the voltage-controlled attenuation module and the voltage-controlled phase module through the second signal transmission channel. The phase and attenuation of the signals are adjusted, and the signals are summarized in the second power distribution module or the first power distribution module, and transmitted to the outside through the second port or the first port. The signals of the first port and the second port are reciprocal, and can be the transmission entrance and transmission exit of the signals, that is, when the first port is the transmission entrance, the second port is the transmission exit, and when the second port is the transmission entrance, the first port is the transmission exit.

[0035] The second power distribution module includes several second signal transmission channels, the number of the second signal transmission channels is the same as the number of the first signal transmission channels, and the several first signal transmission channels of the same first power distribution module are respectively connected to each second power distribution module so that each output signal of the same first power distribution module is distributed to each second power distribution module.

[0036] like Figure 2As shown, the voltage-controlled attenuation module includes a first attenuation adjustment unit, a second attenuation adjustment unit, a third attenuation adjustment unit, and a fourth attenuation adjustment unit. The first attenuation adjustment unit is used to perform preliminary attenuation adjustment on the input average signal to obtain a preliminary adjustment signal. The second attenuation adjustment unit is connected to the first attenuation adjustment unit and is used to perform a second attenuation adjustment on the preliminary adjustment signal to obtain a secondary adjustment signal. The third attenuation adjustment unit is connected to the second attenuation adjustment unit and is used to perform a third attenuation adjustment on the secondary adjustment signal to obtain a third adjustment signal. The fourth attenuation adjustment unit is connected to the third attenuation adjustment unit and is used to perform a final attenuation adjustment on the third adjustment signal to obtain an attenuation signal. In this embodiment, the first attenuation adjustment unit, the second attenuation adjustment unit, and the fourth attenuation adjustment unit are all digital step attenuators, and the third attenuation adjustment unit is an analog step attenuator.

[0037] The first attenuation adjustment unit is configured with a plurality of attenuation gear pins, a first input-output interchange pin and a second interchange pin, the second attenuation adjustment unit is configured with a plurality of attenuation gear pins, a third input-output interchange pin and a fourth interchange pin, the third attenuation adjustment unit is configured with a plurality of attenuation gear pins, a fifth input-output interchange pin and a sixth interchange pin, the fourth attenuation adjustment unit is configured with a plurality of attenuation gear pins, a seventh input-output interchange pin and an eighth interchange pin, the attenuation gear pin is used to input an attenuation signal, and the attenuation signals input into each attenuation gear pin are consistent, the first input-output interchange pin is connected to the output pin of the first power distribution module, the first output The input interchange pin is used to introduce the shared signal into the first attenuation adjustment unit, the second interchange pin is connected to the third input and output interchange pin, the second interchange pin is used to input the preliminary adjustment signal into the second attenuation adjustment unit, the fifth input and output interchange pin is connected to the fourth interchange pin, the fourth interchange pin is used to input the secondary adjustment signal into the third attenuation adjustment unit, the seventh input and output interchange pin is connected to the sixth interchange pin, the sixth interchange pin is used to input the tertiary adjustment signal into the fourth attenuation adjustment unit, the eighth input and output pin of each voltage-controlled attenuation module is connected to the output pin of different first power distribution modules, and the eighth input and output interchange pin is used to input the attenuation signal into the second power distribution module.

[0038] In a specific implementation, a signal enters the first power distribution module from the first port, and is divided by the first power distribution module to form a plurality of divided signals. The divided signals pass through the voltage-controlled phase module and the voltage-controlled attenuation module in sequence through the first signal transmission channel to adjust the phase and attenuation of the signal, and are summarized in the second power distribution module and transmitted to the outside through the second port. Each signal transmission channel of each first power distribution module extends to each second power distribution module. For example, if there are m first power distribution modules and n second power distribution modules, and each first power distribution module has n signal transmission channels and each second power distribution module has m signal transmission channels, then the first signal transmission channel of the first first power distribution module extends to the first second power distribution module, and the second signal transmission channel of the first first power distribution module extends to the second second power distribution module. Similarly, the nth signal transmission channel of the first first power distribution module extends to the mth second power distribution module. The signal transmission directions of the first port and the second port are not limited, and they can be entrances and exits for signal transmission to each other. The signal can enter from the first port or from the second port.

[0039] The present invention adopts a voltage-controlled attenuation chip and a phase shift chip, as well as a 16-bit high-precision digital-to-analog converter for control. The attenuation range can reach 0-90dB, with a step of 0.01dB, and the attenuation accuracy can be controlled within 0.01dB. The phase adjustment range can reach 0-360°, with a step of 0.01°, and the accuracy can be controlled within 0.01°. In addition, the structural configuration can be flexibly changed.

[0040] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, and therefore the present invention is not limited to the embodiments described in the specific implementation manners. Any other implementation manners derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A super-high-precision amplitude modulation and phase modulation matrix network, characterized in that: It includes a number of first ports and a number of second ports. The first ports and the second ports are signal transmission ports. The first ports are connected with a first power distribution module. The first power distribution module includes a number of first signal transmission channels. The first power distribution module evenly distributes the signals input from the first ports into a number of evenly divided signals and transmits them through the first signal transmission channels. Each of the first signal transmission channels is connected with a voltage-controlled phase module, and each of the voltage-controlled phase modules is connected with a voltage-controlled attenuation module. The voltage-controlled phase module is used to adjust the phase shift of the evenly divided signals, and the voltage-controlled attenuation module is used to adjust the attenuation of the evenly divided signals after phase shift adjustment to form attenuation signals. The voltage-controlled attenuation module is connected with a second power distribution module. The signal transmission end of the second power distribution module is connected with the second ports. The second power distribution module is used to evenly distribute the signals input from the second ports. The second power distribution module includes a number of second signal transmission channels, and each of the second signal transmission channels is connected with one of the voltage-controlled attenuation modules; A number of signals enter the first power distribution module through the first ports or enter the second power distribution module through the second ports. After being evenly divided by the first power distribution module or the second power distribution module, a number of evenly divided signals are formed. The evenly divided signals pass through the voltage-controlled phase module and the voltage-controlled attenuation module in sequence through the first signal transmission channels, or pass through the voltage-controlled attenuation module and the voltage-controlled phase module in sequence through the second signal transmission channels to adjust the phase and attenuation of the signals, and are aggregated in the second power distribution module or the first power distribution module and transmitted to the outside through the second ports or the first ports. The signals of the first ports and the second ports are reciprocal and can be used as the signal input ports and output ports for each other.

2. A super-high-precision amplitude modulation and phase modulation matrix network according to claim 1, characterized in that: A number of first signal transmission channels of the same first power distribution module are respectively connected to each of the second power distribution modules, so that each output signal of the same first power distribution module is distributed to each of the second power distribution modules.

3. A super-high-precision amplitude modulation and phase modulation matrix network according to claim 1, characterized in that: The attenuation range of the voltage-controlled attenuation module is 0 - 90 dB.

4. A super-high-precision amplitude modulation and phase modulation matrix network according to claim 1, characterized in that: The phase adjustment range of the voltage-controlled phase module is 0 - 360°.

5. A super-high-precision amplitude modulation and phase modulation matrix network according to claim 1, characterized in that: The voltage-controlled attenuation module includes: A first attenuation adjustment unit for initially adjusting the attenuation of the input evenly divided signals to obtain initially adjusted signals; A second attenuation adjustment unit connected to the first attenuation adjustment unit for further adjusting the initially adjusted signals to obtain secondarily adjusted signals; a third attenuation adjustment unit, connected to the second attenuation adjustment unit, and used for performing a third attenuation adjustment on the second adjustment signal to obtain a third adjustment signal; The fourth attenuation adjustment unit is connected to the third attenuation adjustment unit and is used to perform final attenuation adjustment on the three adjustment signals to obtain the attenuated signal.

6. The ultra-high precision amplitude modulation and phase modulation matrix network according to claim 1, Features: The first power distribution module and the second power distribution module are both power dividers, and the power divider is configured with one input pin and several output pins, the input pin is connected to the first port or the second port, and the output pin is connected to the first signal transmission channel or the second signal transmission channel.

7. The ultra-high precision amplitude modulation and phase modulation matrix network according to claim 5, Features: The first attenuation adjustment unit is configured with a plurality of attenuation gear pins, a first input and output interchange pin and a second interchange pin, the second attenuation adjustment unit is configured with a plurality of attenuation gear pins, a third input and output interchange pin and a fourth interchange pin, the third attenuation adjustment unit is configured with a plurality of attenuation gear pins, a fifth input and output interchange pin and a sixth interchange pin, the fourth attenuation adjustment unit is configured with a plurality of attenuation gear pins, a seventh input and output interchange pin and an eighth interchange pin; The attenuation gear pins are used to input attenuation signals, and the attenuation signals input into the attenuation gear pins are consistent; The first input-output interchange pin is connected to the output pin of the first power distribution module, and the first input-output interchange pin is used to introduce the shared signal into the first attenuation adjustment unit; The second interchange pin is connected to the third input / output interchange pin, and the second interchange pin is used to input the preliminary adjustment signal into the second attenuation adjustment unit; The fifth input / output interchange pin is connected to the fourth interchange pin, and the fourth interchange pin is used to input the secondary adjustment signal into the third attenuation adjustment unit; The seventh input / output interchange pin is connected to the sixth interchange pin, and the sixth interchange pin is used to input the tertiary adjustment signal into the fourth attenuation adjustment unit; The eighth interchange pin of each of the voltage-controlled attenuation modules is connected to an output pin of a different power distribution module, and the eighth interchange pin is used to input the attenuation signal into the power distribution module.

8. The ultra-high precision amplitude modulation and phase modulation matrix network according to claim 5, Features: The first attenuation adjustment unit, the second attenuation adjustment unit and the fourth attenuation adjustment unit are all digital step attenuators, and the third attenuation adjustment unit is an analog step attenuator.

9. The ultra-high precision amplitude modulation and phase modulation matrix network according to claim 8, Features: The model of the digital step attenuator is HMC1119.

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