High-integration-level receiving phase shift assembly

Abstract

The utility model discloses a high-integration-level receiving phase shift assembly, which relates to the technical field of communication and comprises a shell, four ring coupling assemblies, four radio frequency multifunctional modules, two power division network boards, a power division network and detection board, a power supply and circuit board, receiving input ports J1, J2, J3 and J4, transmitting input ports J5, J6, J7 and J8 and receiving output ports J9 and J11, and the four ring coupling assemblies, the four radio frequency multifunctional modules, the two power division network boards, the power division network and detection board and the power supply and circuit board are arranged in the shell. And a detection signal port J10. According to the scheme, four independent receiving channels with the functions of adjustable gain, adjustable phase, adjustable power supply and the like are integrated, the integrated design is realized to the greatest extent, and the antenna has the characteristics of high consistency, high reliability, small size, high efficiency and low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave radio frequency, in particular to a high-integration receiving phase-shifting component. Background Art

[0002] In the RF receiving link, there are usually RF devices such as limiters, low noise amplifiers, digitally controlled attenuators, digitally controlled phase shifters, switches, etc., which can realize the functions of amplification, attenuation, phase shifting and signal switching of the received signal. In traditional technology, in order to realize these functions, independent devices such as limiter chips, low noise amplifier chips, digitally controlled attenuator chips, digitally controlled phase shifter chips, switch chips, etc. are arranged on the same circuit board. At the same time, the arrangement needs to be designed in consideration of circuit size, electromagnetic compatibility issues and the correlation between chip functions.

[0003] With the advancement of technology, the requirements for the integration of receiving components are getting higher and higher. Miniaturized receiving components can better meet the requirements of the size and performance of the whole machine; highly integrated receiving components can achieve more complex functions, greatly reduce the size of components, and reduce power consumption and cost. However, traditional receiving components still have disadvantages such as low integration, large circuit board size, high assembly difficulty, poor reliability, poor maintainability, and high cost. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides a highly integrated receiving phase shifting component, which improves the integration and reduces the volume.

[0005] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0006] A highly integrated receiving phase shifting component comprises a housing and four ring coupling components arranged in the housing, four radio frequency multifunctional modules, two power division network boards, a power division network and a detection board, a power supply and a circuit board, and also comprises receiving input ports J1, J2, J3, and J4, transmitting input ports J5, J6, J7, and J8, receiving output ports J9 and J11, and a detection signal port J10.

[0007] The circulator and the coupler are integrated in the ring coupling assembly;

[0008] The two power division network boards include a first power division network board and a second power division network board, each integrating two one-to-two power division networks;

[0009] The power division network and detection board integrates two one-to-two power division networks, a single-pole four-throw switch and a single-pole double-throw switch. One of the one-to-two power division networks on each power division network board is combined with one of the one-to-two power division networks on the power division network and detection board to form a one-to-four power division network.

[0010] The RF multifunctional module integrates a limiting circuit, a low noise amplifier, a 7-digital controlled attenuator, a 6-digital controlled phase shifter, a driver amplifier, a SPDT switch and a low-pass filter in sequence;

[0011] The main working mode is: when the main signal reaches the J1 / J2 / J3 / J4 port, it is output from the J9 port and the J11 port respectively through the corresponding ring coupling component, RF multi-function module, one-to-four power division network and filter;

[0012] When the detection signal reaches the J10 port, it is divided into 4 paths after passing through the absorptive single-pole double-throw switch and the single-pole four-throw switch, and then coupled by the corresponding ring coupling components and enters the main path;

[0013] When the signal is transmitted to the J5 / J6 / J7 / J8 port, it is output to the J1 / J2 / J3 / J4 port through the coupling branch in the corresponding ring coupling component;

[0014] The power supply and circuit board provide the required power and control signals for the active devices in the RF multi-function module, and provide power and control signals for the switches in the detection link.

[0015] Furthermore, the outer shell includes an upper cover, a cavity and a lower cover; the power division network and detection board, the power supply and the circuit board are arranged between the cavity and the lower cover; four ring coupling components, four RF multi-function modules, two power division network boards and two inner covers are arranged between the cavity and the upper cover; the inner cover covers the top of the RF multi-function module and is used to close the RF multi-function module; the J1, J2, J3 and J4 ports are all arranged on the side wall of the cavity; the J5, J6, J7 and J8 ports are all arranged on the lower cover; the J9, J10 and J11 ports are respectively arranged on the integrated connector.

[0016] Furthermore, the first power division network board is provided with G1, G2, G5, and G6 ports, and the second power division network board is provided with G3, G4, G7, and G8 ports. The microstrip lines designed at the G1, G2, G3, and G4 ports differ by 1.7° respectively, and the microstrip lines designed at the G5, G6, G7, and G8 ports differ by -1.7° respectively.

[0017] Furthermore, the RF multi-function module has a high-power limiting function, which can prevent interference from microwave weapons with a power of 1000W, a pulse width of 1us, a repetition frequency of 100Hz, and a pulse rising edge of 5ns.

[0018] Furthermore, in the power division network and the detection board, each channel realizes amplitude and phase consistency design through a serpentine line, and each channel designs a local amplitude and phase adjustment position, and performs amplitude and phase adjustment according to actual assembly differences, thereby achieving amplitude and phase consistency.

[0019] The beneficial effects of the utility model are: integrating 4 independent receiving channels with functions such as adjustable gain, adjustable phase, and modulated power supply, realizing integrated design to the maximum extent, and having the characteristics of high consistency, high reliability, small size, high efficiency, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The principle block diagram of the receiving phase shifting component is shown;

[0021] Figure 2 An exploded view of a receiving phase shifting assembly is shown;

[0022] Figure 3 A top structural diagram of the interior of a receiving phase shifting assembly is shown;

[0023] Figure 4 A top view of the interior of a receiving phase shifting assembly is shown;

[0024] Figure 5 A top structural diagram of a receiving phase shifting assembly is shown;

[0025] Figure 6 A bottom view of a receiving phase shifting assembly is shown;

[0026] Figure 7 The external structure diagram of the ring coupling component is shown;

[0027] Figure 8 The internal distribution diagram of the ring coupling component is shown;

[0028] Fig. 9 Shows a block diagram of the connection relationship of the radio frequency multi-function module;

[0029] Fig.10 shows a first power division network board layout diagram;

[0030] Fig.11 shows a second power division network board layout diagram;

[0031] Fig.12 Shows the layout of the power division network and the detection board;

[0032] Fig.13 Shows the power supply and circuit board principle block diagram;

[0033] Markings in the figure: ring coupling component-1, RF multifunctional module-2, first power division network board-31, second power division network board-32, power division network and detection board-4, serpentine line-41, amplitude and phase adjustment position-42, power supply and circuit board-5, upper cover-61, cavity-62, lower cover-63, inner cover-64, integrated connector-7. DETAILED DESCRIPTION

[0034] like Figure 1-Figure 6 As shown, this embodiment provides a highly integrated receiving phase shifting component, including a housing and four ring coupling components 1 arranged in the housing, four radio frequency multi-function modules 2, two power division network boards, a power division network and detection board 4, a power supply and a circuit board 5, and the receiving phase shifting component also includes receiving input ports J1, J2, J3, and J4, transmitting input ports J5, J6, J7, and J8, receiving output ports J9 and J11, and a detection signal port J10.

[0035] Specifically, Figure 2 As shown, the shell includes an upper cover 61, a cavity 62 and a lower cover 63, the power division network and detection board 4, the power supply and circuit board 5 are arranged between the cavity 62 and the lower cover 63, four ring coupling components 1, four radio frequency multi-function modules 2, and two power division network boards are arranged between the cavity 62 and the upper cover 61, the J1, J2, J3, and J4 ports are all arranged on the side wall of the cavity 62, and the J5, J6, J7, and J8 ports are all arranged on the lower cover 63.

[0036] More specifically, Figure 2 , Figure 3 As shown, the housing also includes two inner covers 64, which cover the top of the RF multifunctional module 2 and are used to close the RF multifunctional module 2 to increase the shielding effect. The RF multifunctional module 2 has a high-power limiting function, which can prevent interference from microwave weapons with a power of 1000W, a pulse width of 1us, a repetition frequency of 100Hz, and a pulse rising edge of 5ns.

[0037] The receiving phase shift component provided in this embodiment has a size of 182mm*74mm*33mm. This size is based on actual engineering application requirements and port design, and can be reduced by 30% on this basis.

[0038] This embodiment performs modular design on the integrable functional circuits to reduce the crosstalk in the link, ensuring the index requirements while greatly improving the production efficiency; this embodiment performs cavity design on the functional circuits of various parts such as the ring coupling component 1, the RF multi-function module 2, the power supply and the circuit board 5, and each channel in the component to ensure the independence of each part and reduce mutual crosstalk. A variety of modular designs are performed inside the module, which has good maintainability and shielding performance.

[0039] Specifically, Figure 7 , Figure 8 As shown, a dual-loop circulator and a coupler are integrated in the ring coupling component 1. The dual-loop circulator is connected to the P1 port through a stripline. The P1 port is a transmitting port, the P2 port is an antenna port, the P3 port is an output port, and the P4 port is a coupling detection port of the coupler.

[0040] The ring coupling component 1 integrates the coupler and the dual-ring circulator into an integrated design, which reduces the volume. At the same time, the transmission adopts the integrated design of strip line and circulator, which avoids the mismatch problem caused by cascading and effectively reduces the transmission insertion loss.

[0041] The ring coupling component 1 can achieve reverse isolation ≥ 20dB, power resistance ≥ 1000W peak, and coupling degree 27dB±1dB. Its specific indicators are as follows:

[0042] a) Operating frequency: 2.7GHz~3.5GHz;

[0043] b) Forward loss: ≤0.25dB;

[0044] c) Reverse isolation: ≥20dB;

[0045] d) Voltage standing wave ratio: ≤1.25;

[0046] e) Phase consistency: ≤±5°;

[0047] f) Coupling degree: 27±1dB;

[0048] g) Power handling: Anti-pulse peak power ≥ 1000W, pulse width 300us, duty cycle 10%.

[0049] Specifically, Figure 2 , Fig. 9 As shown, the RF multi-function module 2 uses a ceramic tube shell to integrate the limiting circuit, low-noise amplifier, 7-digital controlled attenuator, 6-digital controlled phase shifter, driver amplifier, SPDT switch and low-pass filter inside. The GaAs ED process is used to integrate the low-noise amplifier, 7-digital controlled attenuator, 6-digital controlled phase shifter, driver amplifier, SPDT switch into a multi-function chip. The chip layout is optimized to reduce the electromagnetic interference between the functional links and minimize the chip area. The specific indicators of the RF multi-function module 2 are as follows:

[0050] a) Operating frequency: 2.7GHz~3.5GHz;

[0051] b) Gain: 30dB±0.25dB;

[0052] c) Standing wave coefficient: ≤1.3;

[0053] d) Number of attenuation bits: 7 bits (0.25dB step, high level attenuation);

[0054] e) Phase shift: 6 bits (5.625° step, high level phase shift);

[0055] f) Attenuation accuracy: ≤±(0.25+4% attenuation)dB;

[0056] g) Attenuation additional phase shift ≤ ±3°;

[0057] h) Phase shift accuracy: ≤2°(RMS);

[0058] i) Phase consistency ≤ ±2°;

[0059] j) Amplitude consistency: ≤±0.4dB (amplitude difference at the same frequency between channels under the same working condition);

[0060] k) Phase shift additional attenuation: ≤±0.2dB;

[0061] l) Noise coefficient: ≤0.9dB;

[0062] m) Isolation: ≥70dB;

[0063] n) Withstand power: 1000W, pulse width 300us, duty cycle 10%;

[0064] o) Switching time: ≤0.7us;

[0065] p) Input P-1: ≥-15dBm;

[0066] q) Power supply: +5V (≤100mA), -5V (≤25mA).

[0067] Specifically, Figure 2 As shown, the two power division network boards include a first power division network board 31 and a second power division network board 32, each integrating two one-to-two power division networks. The circuit layout of the first power division network board 31 is as shown in FIG. Fig.10 As shown, there are ports G1, G2, G5, and G6, and the circuit layout of the second power distribution network board 32 is as follows Fig.11 As shown, there are G3, G4, G7, and G8 ports.

[0068] As recorded in Table 1, the phase difference between adjacent ports (Jn+1 / Jn) of beam 2 (J9) is -1.7°±0.4°, and the phase difference between adjacent ports (Jn+1 / Jn) of beam 1 (J11) is 1.7°±0.4°. In order to achieve the phase difference of -1.7° between adjacent ports (Jn+1 / Jn) of beam 2 (J9), the microstrip lines at ports G1, G2, G3, and G4 are designed to differ by -1.7° respectively. In order to achieve the phase difference of 1.7° between adjacent ports (Jn+1 / Jn) of beam 1 (J11), the microstrip lines at ports G5, G6, G7, and G8 are designed to differ by 1.7° respectively.

[0069] Specifically, the power division network and detection board 4 integrates two one-to-two power division networks, a single-pole four-throw switch and a single-pole double-throw switch, and its circuit layout is as follows: Fig.12As shown; one of the one-to-two power division networks on each power division network board is combined with one of the one-to-two power division networks on the power division network and detection board 4 to form a one-to-four power division network; the above power division networks all use Wilkinson power dividers.

[0070] like Fig.12 As shown, in the power division network and detection board 4, each channel realizes amplitude and phase consistency design through a serpentine line 41, and each channel is designed with a local amplitude and phase adjustment position 42, which can adjust the amplitude and phase according to actual assembly differences, thereby achieving amplitude and phase consistency.

[0071] The receiving phase shifting component provided in this embodiment integrates 4 independent receiving channels with functions such as adjustable gain, adjustable phase, and adjustable power supply, and realizes the integrated design to the maximum extent, making it have the characteristics of high consistency, high reliability, small size, high efficiency, and low cost. Figure 3 , Figure 4 As shown, the J9, J10, and J11 ports are respectively arranged on the integrated connector 7, replacing the conventional printed circuit board transfer method, reducing the interconnection loss and lowering the assembly difficulty.

[0072] Among them, the first main signal is received by the antenna to the J1 port, and is output from the J9 port and the J11 port respectively through the corresponding ring coupling component 1, the RF multi-function module 2, the one-to-four power division network and the filter;

[0073] The second main signal is received by the antenna to the J2 port, and is output from the J9 port and the J11 port respectively through the corresponding ring coupling component 1, the RF multi-function module 2, the one-to-four power division network and the filter;

[0074] The third main signal is received by the antenna to the J3 port, and is output from the J9 port and the J11 port respectively through the corresponding ring coupling component 1, the RF multi-function module 2, the one-to-four power division network and the filter;

[0075] The fourth main signal is received by the antenna to the J4 port, and is output from the J9 port and the J11 port respectively through the corresponding ring coupling component 1, the RF multi-function module 2, the one-to-four power division network and the filter;

[0076] In addition, the detection signal arrives at the J10 port, is divided into 4 paths after passing through the absorptive single-pole double-throw switch and the single-pole four-throw switch, and then enters the main path after being coupled by the corresponding ring coupling component 1, and is output from the J9 port and the J11 port respectively through the RF multi-function module 2, the one-to-four power division network and the filter for link signal detection.

[0077] In addition, when the signal is transmitted to the J5 / J6 / J7 / J8 ports, it will also be output to the J1 / J2 / J3 / J4 ports respectively through the coupling branches in the corresponding ring coupling component 1.

[0078] The power supply and circuit board 5 provides the required power and control signals for the active devices in the RF multi-function module 2, and provides power and control signals for the switches in the detection link. Fig.13 As shown, under +5V power input, after passing through the current detection circuit, the voltage is stabilized to +4.5V, +3.3V and +1.1V by three LDO voltage regulator circuits, among which the +4.5V voltage is used for the RF multi-function module 2 and the switch in the detection link, +3.3V is used for the FPGA and the level converter, and +1.1V is used for the FPGA. In addition, the differential reception input signal and the voltage comparator output signal are passed through the FPGA and level conversion for use by the single-pole four-throw switch and the single-pole double-throw switch in the RF multi-function module 2 and the detection link.

[0079] The performance indicators of the receiving phase shift component are as follows in Table 1:

[0080] Table 1 Index of receiving phase shift components

[0081]

[0082] The above embodiments are only used to illustrate the technical ideas and features of the utility model, and are not intended to be the only or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.

Claims

1. A highly integrated receiving phase shifting component, characterized in that: It comprises a housing and four ring coupling components (1) arranged in the housing, four radio frequency multifunctional modules (2), two power division network boards, a power division network and detection board (4), a power supply and a circuit board (5), and also comprises receiving input ports J1, J2, J3, and J4, transmitting input ports J5, J6, J7, and J8, receiving output ports J9 and J11, and a detection signal port J10; The circulator and the coupler are integrated in the ring coupling component (1); The two power division network boards include a first power division network board (31) and a second power division network board (32), each integrating two one-to-two power division networks; The power division network and detection board (4) integrates two one-to-two power division networks, a single-pole four-throw switch and a single-pole double-throw switch, and one of the one-to-two power division networks on each power division network board is combined with one of the one-to-two power division networks on the power division network and detection board (4) to form a one-to-four power division network; The radio frequency multifunctional module (2) sequentially integrates a limiting circuit, a low noise amplifier, a 7-digital controlled attenuator, a 6-digital controlled phase shifter, a driving amplifier, a SPDT switch and a low-pass filter; When the main signal reaches the J1 / J2 / J3 / J4 port, it is output from the J9 port and the J11 port respectively through the corresponding ring coupling component (1), the RF multifunctional module (2), the one-to-four power division network and the filter; When the detection signal reaches the J10 port, it is divided into 4 paths after passing through the absorptive single-pole double-throw switch and the single-pole four-throw switch, and then coupled by the corresponding ring coupling component (1) and enters the main path; When the signal is transmitted to the J5 / J6 / J7 / J8 port, it is output to the J1 / J2 / J3 / J4 port respectively through the coupling branch in the corresponding ring coupling component (1); The power supply and circuit board (5) provides the required power supply and control signals for the active components in the radio frequency multifunctional module (2), and provides power supply and control signals for the switches in the detection link.

2. The highly integrated receiving phase shifting component according to claim 1, characterized in that: The housing comprises an upper cover plate (61), a cavity (62) and a lower cover plate (63); a power division network and detection board (4), a power supply and circuit board (5) are arranged between the cavity (62) and the lower cover plate (63); four ring coupling components (1), four radio frequency multifunctional modules (2), two power division network boards and two inner cover plates (64) are arranged between the cavity (62) and the upper cover plate (61); the inner cover plate (64) covers the top of the radio frequency multifunctional module (2) and is used to seal the radio frequency multifunctional module (2); ports J1, J2, J3 and J4 are all arranged on the side wall of the cavity (62); ports J5, J6, J7 and J8 are all arranged on the lower cover plate (63); ports J9, J10 and J11 are respectively arranged on the integrated connector (7).

3. The highly integrated receiving phase shifting component according to claim 1, characterized in that: The first power division network board (31) is provided with G1, G2, G5, and G6 ports, and the second power division network board (32) is provided with G3, G4, G7, and G8 ports. Microstrip lines at the G1, G2, G3, and G4 ports are designed to have a phase difference of 1.7°, and microstrip lines at the G5, G6, G7, and G8 ports are designed to have a phase difference of -1.7°.

4. The highly integrated receiving phase shifting component according to claim 1, characterized in that: The radio frequency multifunctional module (2) has a high power limiting function and is used to prevent interference from microwave weapons with a power of 1000W, a pulse width of 1us, a repetition frequency of 100Hz, and a pulse rising edge of 5ns.

5. The highly integrated receiving phase shifting component according to claim 1, characterized in that: In the power division network and detection board (4), each channel realizes amplitude and phase consistency design through a serpentine line (41), and each channel is designed with a local amplitude and phase adjustment position (42), and amplitude and phase adjustment is performed according to actual assembly differences to achieve amplitude and phase consistency.

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