Ultrashort wave broadband radio frequency conditioning module

Abstract

The utility model provides an ultrashort wave broadband radio frequency conditioning module, which solves the problem of modularization of a signal conditioning system and the like, and comprises an equipment shell which is internally provided with a radio frequency channel, a DA channel, a clock channel and a straight-through channel, and a power division network module, an amplification network module, a filter network module, a balance network module, an attenuation network module and a control circuit are also arranged in the equipment shell. The device has the advantages of high modularization degree, stable structure and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of wireless communications, and in particular relates to an ultra-short wave broadband radio frequency conditioning module. Background Art

[0002] With the rapid development of communication technology, RF conditioning modules are widely used in microwave communication systems. They often serve as low-noise amplifiers (LNAs) in receiver front-ends. RF conditioning modules can meet multi-channel input and output requirements, customize channel frequency and gain, provide high channel isolation, and support communication port configuration and attenuation. Driven by market demand, RF conditioning designs are trending toward modularity, requiring greater versatility and interchangeability.

[0003] To address the shortcomings of existing technologies, researchers have conducted extensive research and proposed a variety of solutions. For example, a Chinese patent document discloses a combined device for programmable attenuation and conditioning of radio frequency signals [202221985598.0]. The device comprises a housing, a power module disposed within the housing for providing power, and a panel for plugging in the modules. The panel is provided with ports A1-A6 and B1-B6. The device also includes an SP6T microwave switch, a fixed attenuator, a programmable attenuator, a low-frequency narrowband amplifier, a low-noise wideband amplifier, a directional coupler, a detector, and a low-frequency control circuit.

[0004] The above solution solves the signal conditioning problem to a certain extent, but it still has many shortcomings, such as low modularity. Summary of the Invention

[0005] The purpose of the utility model is to provide an ultra-short wave broadband radio frequency conditioning module with a reasonable design and a high degree of modularization in order to solve the above problems.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: an ultra-short wave broadband RF conditioning module, including a device housing, in which a RF channel, a DA channel, a clock channel and a through channel are arranged, and the device housing is also provided with a power division network module, an amplification network module, a filtering network module, a balancing network module, an attenuation network module and a control circuit.

[0007] In the above-mentioned ultra-short wave broadband RF conditioning module, the power division network module is integrally connected to the device housing, and the power division network module is provided with six output ports, three attenuation network modules, three amplification network modules, one filtering network module and three balancing network modules correspond one to one to the six output ports and are connected in series through SMP connectors.

[0008] In the above-mentioned ultra-short wave broadband RF conditioning module, three attenuation network modules, three amplification network modules, one filter network module, and three equalization network modules are fixed on the front of the device housing, and the three attenuation network modules are respectively provided with control pins. The control circuit is installed on the bottom surface of the device housing and connected to the control pins of the attenuation network modules.

[0009] In the above-mentioned ultra-short wave broadband radio frequency conditioning module, the power division network module adopts a resistor power division circuit design, which includes an R2 power division circuit with three resistors.

[0010] In the above-mentioned ultra-short wave broadband RF conditioning module, the amplification network module has two groups of RF on-off amplification network modules and one group of DA channel amplification network module. The RF on-off amplification network module has a four-stage amplifier, and the DA channel amplification network module has a three-stage amplifier.

[0011] In the above-mentioned ultra-short wave broadband RF conditioning module, there are three groups of attenuation network modules, each group of attenuation network modules includes a CMOS electronic switching switch and a sub-attenuation network, and the sub-attenuation networks are 1dB sub-attenuator, 2dB sub-attenuator, 4dB sub-attenuator, 8dB sub-attenuator, and 16dB sub-attenuator respectively.

[0012] In the above-mentioned ultra-short wave broadband RF conditioning module, the filter network module is a DA channel, and the filter network module is a miniature patch high-pass filter and a low-pass filter connected in series.

[0013] In the above-mentioned ultra-short wave broadband RF conditioning module, the RF channel and the DA channel are equipped with an equalizing circuit, and the equalizing circuit is an RC circuit simulated according to S parameters.

[0014] In the above-mentioned ultra-short wave broadband RF conditioning module, the through channel signal input end and the signal output end are connected in series using a 3506 cable.

[0015] The above-mentioned ultra-short wave broadband radio frequency conditioning module includes a radio frequency circuit board, which is fixed in a shielding cavity.

[0016] Compared with existing technologies, the advantages of the present invention are: high degree of modularity, high versatility and replaceability; amplitude controllable and support for communication port configuration and attenuation; the use of CPLD architecture control circuit technology, the control response speed is within 30nS, and can meet the attenuation speed requirements of all platforms. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 It is another structural schematic diagram of the utility model.

[0019] Figure 3 It is a structural principle diagram of the present utility model.

[0020] Figure 4 This is a principle framework diagram of the power division network module of the present utility model.

[0021] Figure 5 This is a principle framework diagram of the amplifying network module of the present utility model.

[0022] Figure 6 and Figure 7 This is a principle framework diagram of the attenuation network module of the present utility model.

[0023] Figure 8 This is a principle framework diagram of the filter network module of the present utility model.

[0024] Figure 9 This is a principle framework diagram of the balanced network module of the present utility model.

[0025] In the figure, there are a device housing 1, a power division network module 2, an amplification network module 3, a filtering network module 4, a balancing network module 5, and an attenuation network module 6. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0027] like Figure 1-9 As shown, an ultra-short wave broadband RF conditioning module includes a device housing 1, in which a RF channel, a DA channel, a clock channel and a through channel are provided. The device housing 1 is also provided with a power division network module 2 for power distribution of 30MHz~6000MHz / 950MHz~2150MHz RF signals, an amplification network module 3 for gain amplification of 30MHz~6000MHz / 950MHz~2150MHz RF signals, a filtering network module 4 for filtering 950MHz~2150MHz RF signals, an equalization network module 5 for equalizing 30MHz~6000MHz / 950MHz~2150MHz RF signals, an attenuation network module 6 for five-digital controlled attenuation of 30MHz~6000MHz / 950MHz~2150MHz RF signals, and a control circuit for controlling the attenuation state of the device.

[0028] Specifically, the power division network module 2 is integrally connected to the device housing 1, and the power division network module 2 is provided with six output ports, three attenuation network modules 6, three amplification network modules 3, one filtering network module 4 and three balancing network modules 5 correspond one to one to the six output ports and are connected in series through SMP connectors.

[0029] In depth, three attenuation network modules 6, three amplification network modules 3, one filtering network module 4, and three balancing network modules 5 are fixed on the front of the device housing 1, and the three attenuation network modules 6 are respectively provided with control pins, and the control circuit is installed on the bottom surface of the device housing 1 and connected to the control pins of the attenuation network module 6.

[0030] Furthermore, the power division network module 2 adopts a resistor power division circuit design, which includes an R2 power division circuit with three resistors.

[0031] Furthermore, amplification network module 3 comprises two RF on-off amplification network modules and one DA channel amplification network module. The RF on-off amplification network module has a frequency range of 30MHz to 6000MHz and a four-stage amplifier, with amplifiers A through D connected in series. The amplified gain is 30dB and the in-band ripple is 1dB. The DA channel amplification network module has a frequency range of 950MHz to 2150MHz and a three-stage amplifier, with amplifiers A through D connected in series. The amplified gain is 30dB and the in-band ripple is 1dB. The amplifier is equipped with a temperature-compensated attenuator. The amplified output signal is split by a resistor to form two equal-power RF signals, which are transmitted to the RF channel output terminal via an SMP to SSMA cable assembly.

[0032] In addition, the input RF signal is amplified by the amplifier network module 3 and transmitted to the attenuation network module 6, which performs digitally controlled attenuation on the amplified signal. There are three groups of attenuation network modules 6, each of which includes a CMOS electronic switching switch and a sub-attenuation network. The sub-attenuation networks are respectively 1dB sub-attenuator, 2dB sub-attenuator, 4dB sub-attenuator, 8dB sub-attenuator, and 16dB sub-attenuator. The corresponding CMOS electronic switching switch is used to select whether to use the corresponding sub-attenuator to control the input signal amplitude in six states: 1dB, 2dB, 4dB, 8dB, and 16dB. The digital control gain control range of the RF channel is -62 to 0dB in 1dB steps, and the digital control gain control range of the DA channel is -31 to 0dB in 1dB steps.

[0033] At the same time, the filter network module 4 is a DA channel with a frequency of 950MHz to 2150MHz. The filter network module 4 is a miniature patch high-pass filter and a low-pass filter in series. The filter out-of-band suppression is ≥30dBc, and it has the advantages of miniaturization, low cost, and easy mounting.

[0034] It can be seen that the RF channel frequency is 30MHz~6000MHz, and the DA channel frequency is 950MHz~2150MHz, and an equalization circuit is equipped between them. The equalization circuit is an RC circuit simulated according to S parameters. The equalization circuit is an RC circuit simulated according to S parameters. The equalization amount of the equalization circuit is about 3dB. After the equalization circuit, the in-band fluctuation of the RF channel and the DA channel is within 1dB, achieving high gain, ultra-short wave high bandwidth, and good gain flatness.

[0035] Obviously, the direct channel signal input and signal output are connected in series using 3506 cables. The device housing adopts the standard VPX modular design, which is highly adaptable, can be blind-plugged, and supports communication port configuration and attenuation.

[0036] Preferably, the device comprises a radio frequency circuit board fixed in the shielding cavity. The control circuit comprises a processor and an interface chip, the processor is connected to the interface chip and the digitally controlled attenuator respectively, and the interface chip is also connected to the communication interface.

[0037] In summary, the principle of this embodiment is that after the RF signal of the input RF signal is amplified, it is transmitted to the six-way digital controlled attenuation network module 6, and the attenuation network module 6 has three groups, which are respectively connected to the output port after amplification, and the amplified signal is digitally attenuated. After digital attenuation, it passes through the second-stage amplifier circuit. There is a temperature-compensated attenuator between the second-stage amplifier circuit and the third-stage amplifier circuit, and a π-type fixed attenuator is connected between the third-stage amplifier circuit and the fourth-stage amplifier circuit. After the output signal after the fourth stage amplification is divided by the resistor power, it forms two equal-power RF signals, which are transmitted to the RF channel output end through the SMP to SSMA cable assembly.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0039] Although this document frequently uses terms such as device housing 1, power splitter network module 2, amplifier network module 3, filter network module 4, equalizer network module 5, and attenuation network module 6, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of this utility model; interpreting them as any additional limitations would be contrary to the spirit of this utility model.

Claims

1. An ultra-short wave broadband radio frequency conditioning module, comprising a device housing (1), wherein a radio frequency channel, a DA channel, a clock channel and a through channel are provided in the device housing (1), characterized in that: The device housing (1) is further provided with a power division network module (2), an amplification network module (3), a filtering network module (4), a balancing network module (5), an attenuation network module (6) and a control circuit.

2. The ultra-short wave broadband radio frequency conditioning module according to claim 1, characterized in that: The power division network module (2) is integrally connected to the device housing (1), and the power division network module (2) is provided with six output ports, and three attenuation network modules (6), three amplification network modules (3), one filtering network module (4) and three balancing network modules (5) correspond to the six output ports one by one and are connected in series through an SMP connector.

3. The ultra-short wave broadband radio frequency conditioning module according to claim 2, characterized in that: The three attenuation network modules (6), the three amplification network modules (3), the one filter network module (4), and the three equalization network modules (5) are fixed on the front of the device housing (1), and the three attenuation network modules (6) are respectively provided with control pins. The control circuit is installed on the bottom surface of the device housing (1) and connected to the control pins of the attenuation network modules (6).

4. The ultra-short wave broadband radio frequency conditioning module according to claim 1, characterized in that: The power division network module (2) adopts a resistor power division circuit design, which includes an R2 power division circuit with three resistors.

5. The ultra-short wave broadband radio frequency conditioning module according to claim 1, characterized in that: The amplifying network module (3) comprises two groups of radio frequency on-off amplifying network modules and one group of DA channel amplifying network modules, wherein the radio frequency on-off amplifying network module comprises a four-stage amplifier, and the DA channel amplifying network module comprises a three-stage amplifier.

6. The ultra-short wave broadband radio frequency conditioning module according to claim 1, characterized in that: There are three groups of attenuation network modules (6), each group of attenuation network modules (6) includes a CMOS electronic switching switch and a sub-attenuation network, and the sub-attenuation networks are respectively a 1dB sub-attenuator, a 2dB sub-attenuator, a 4dB sub-attenuator, an 8dB sub-attenuator, and a 16dB sub-attenuator.

7. The ultra-short wave broadband radio frequency conditioning module according to claim 1, characterized in that: The filter network module (4) is a DA channel, and the filter network module (4) is a miniature patch high-pass filter and a low-pass filter connected in series.

8. The ultra-short wave broadband radio frequency conditioning module according to claim 1, characterized in that: The RF channel and the DA channel are equipped with an equalizing circuit, and the equalizing circuit is an RC circuit simulated according to S parameters.

9. The ultra-short wave broadband radio frequency conditioning module according to claim 1, characterized in that: The through channel signal input end and signal output end are connected in series using a 3506 cable.

10. The ultra-short wave broadband radio frequency conditioning module according to claim 1, characterized in that: It comprises a radio frequency circuit board, the device housing (1) has a built-in shielding cavity, and the radio frequency circuit board is fixed in the shielding cavity.

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