Multi-order coupling switching circuit
By using cascaded couplings and switches in multi-order coupling switching circuits, the problem of unstable traditional adjustable couplers when adjusting coupling degrees is solved, and flexible adjustment and efficiency improvement of signal transmission coupling degrees are achieved.
Patent Information
- Application Number
- CN202420177522.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-24
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-01-24
AI Technical Summary
When the traditional adjustable coupler adjusts the capacitance value of the internal variable capacitor, it will affect the electromagnetic coupling between the main line and the auxiliary line, resulting in the coupling degree adjustment not stable enough and the coupling degree cannot be flexibly adjusted during signal transmission.
Provided is a multi-order coupling switching circuit, including at least two couplers, at least two single-pole single-throw switches and a single-pole multi-throw switch. Through cascade setting and selective conduction of the switch, the coupling degree is realized during signal transmission. Flexible adjustments.
By sequentially turning on the single-pole single-throw switch, flexible adjustment of the coupling degree during signal transmission is achieved, signal transmission efficiency is improved, and system complexity and power consumption are reduced.
Smart Images
Figure CN222464596U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of communication transmission technology, and in particular to a multi-stage coupling switching circuit. Background Art
[0002] In the field of communication transmission technology, traditional adjustable couplers are often used to achieve adjustable coupling signal transmission. Different coupling degrees are achieved by adjusting the parameters of its internal components, such as the capacitance value of the variable capacitor, to meet different application requirements.
[0003] However, when a traditional adjustable coupler adjusts the capacitance value of the internal variable capacitor, the change in capacitance value will affect the electromagnetic coupling between the internal main line and the auxiliary line, so that a larger capacitance value will form a higher coupling degree, while a smaller capacitance value will reduce the coupling degree, thereby failing to flexibly adjust the coupling degree during signal transmission, resulting in a poor coupling effect. Utility Model Content
[0004] In order to solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a multi-stage coupling switching circuit.
[0005] The present disclosure provides a multi-stage coupling switching circuit, comprising: at least two couplers, at least two single-pole single-throw switches and a single-pole multi-throw switch; each of the couplers at least comprises an input end, an output end and a coupling end;
[0006] The couplers are arranged in cascade; the coupling end of the coupler of the previous stage is connected to the input end of the coupler of the next stage through a single-pole single-throw switch, and the output end of the coupler of the next stage is connected to the single-pole multi-throw switch; the coupling end of the coupler of the last stage is connected to the single-pole multi-throw switch;
[0007] The coupler arranged in cascade is used to couple and output a first-order coupling signal or a multi-order coupling signal based on at least one single-pole single-throw switch that is turned on in sequence.
[0008] Optionally, the at least two couplers include a first coupler, a second coupler, a third coupler and a fourth coupler which are cascaded in sequence;
[0009] The first coupler, the second coupler, the third coupler and the fourth coupler are all directional couplers.
[0010] Optionally, the multi-stage coupling switching circuit further includes a first straight-through end and a second straight-through end;
[0011] The first through-end is connected to the input end of the first coupler, and the output end of the first coupler is connected to the second through-end;
[0012] The first through-end is used for inputting a signal to be coupled; and the second through-end is used for outputting the signal to be coupled.
[0013] Optionally, the single-pole multi-throw switch includes a first switching end, a second switching end, a third switching end and a fourth switching end, which are selectively turned on;
[0014] The output end of the second coupler is connected to the first switching end; the output end of the third coupler is connected to the second switching end; the output end of the fourth coupler is connected to the third switching end; and the coupling end of the fourth coupler is connected to the fourth switching end.
[0015] Optionally, the single-pole multi-throw switch is a single-pole four-throw switch.
[0016] Optionally, the at least two single-pole single-throw switches include a first single-pole single-throw switch, a second single-pole single-throw switch, a third single-pole single-throw switch and a fourth single-pole single-throw switch;
[0017] One end of the first single-pole single-throw switch is connected to the coupling end of the first coupler, and the other end is connected to the input end of the second coupler; one end of the second single-pole single-throw switch is connected to the coupling end of the second coupler, and the other end is connected to the input end of the third coupler; one end of the third single-pole single-throw switch is connected to the coupling end of the third coupler, and the other end is connected to the input end of the fourth coupler; one end of the fourth single-pole single-throw switch is connected to the coupling end of the fourth coupler, and the other end is connected to the fourth switching end.
[0018] Optionally, the multi-stage coupling switching circuit further includes a target interaction terminal; the single-pole multi-throw switch further includes a multi-throw gating terminal;
[0019] The multi-throw selection terminal is connected to the target interaction terminal;
[0020] The target interaction end is at least used to output a coupling signal; the multi-throw selection end is at least used to input the first-order coupling signal to the target interaction end based on switching to the first switching end, or to input the second-order coupling signal to the target interaction end based on switching to the second switching end, or to input the third-order coupling signal to the target interaction end based on switching to the third switching end, or to input the fourth-order coupling signal to the target interaction end based on switching to the fourth switching end.
[0021] Optionally, the multi-stage coupling switching circuit further comprises at least two isolation switching components; each of the couplers further comprises an isolation terminal;
[0022] The isolation end is connected to the isolation switching component;
[0023] The target interaction end is also used to input a switching signal; the isolation switching component is used to transmit the switching signal or isolate the coupling signal.
[0024] Optionally, the isolation switching component includes a single-pole double-throw switch, a grounding resistor and a transceiver port; the single-pole double-throw switch includes a double-throw selection terminal and a fourth switching terminal and a fifth switching terminal that are selectively turned on;
[0025] The double-throw selection terminal is connected to the isolation terminal; the fourth switching terminal is connected to the grounding resistor; and the fifth switching terminal is connected to the transceiver port;
[0026] The grounding resistor is used to isolate the coupled signal based on switching to the fourth switching end; and the transceiver port is used to transmit the switching signal based on switching to the fifth switching end.
[0027] Optionally, the multi-stage coupling switching circuit further includes a switch control component;
[0028] Each of the single-pole double-throw switches, each of the single-pole single-throw switches, and the single-pole multi-throw switch is connected to the switch control component;
[0029] The switch control component is used to control the switch states of the single-pole double-throw switch, the single-pole single-throw switch and the single-pole multi-throw switch.
[0030] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:
[0031] The multi-stage coupling switching circuit provided by the embodiment of the present disclosure includes: at least two couplers, at least two single-pole single-throw switches and a single-pole multi-throw switch; each coupler includes at least an input end, an output end and a coupling end; each coupler is cascaded; the coupling end of the upper-stage coupler is connected to the input end of the lower-stage coupler through a single-pole single-throw switch, and the output end of the lower-stage coupler is connected to the single-pole multi-throw switch; the coupling end of the last-stage coupler is connected to the single-pole multi-throw switch; the cascaded couplers are used to couple and output a first-order coupling signal or a multi-order coupling signal based on at least one single-pole single-throw switch that is turned on in sequence. In this way, by selectively turning on the single-pole single-throw switch and the single-pole multi-throw switch corresponding to a certain coupler, flexible adjustment of the coupling degree during signal transmission is achieved, and the signal transmission efficiency is further improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0034] Figure 1 A schematic diagram of the structure of a multi-stage coupling switching circuit provided by an embodiment of the present disclosure;
[0035] Figure 2 A schematic diagram of the structure of another multi-stage coupling switching circuit provided by an embodiment of the present disclosure;
[0036] Figure 3 A schematic diagram of the structure of another multi-stage coupling switching circuit provided in an embodiment of the present disclosure.
[0037] Among them, 110, coupler; 111, first coupler; 112, second coupler; 113, third coupler; 114, fourth coupler; 120, single-pole single-throw switch; 130, single-pole multi-throw switch; 131, first switching end; 132, second switching end; 133, third switching end; 134, fourth switching end; 135, multi-throw selection end; 141, first direct-through end; 142, second direct-through end; 150, target interaction end; 160, isolation switching component; 161, single-pole double-throw switch; 162, grounding resistor; 163, transceiver port; 01, input end; 02, output end; 03, coupling end; 04, isolation end; 05, double-throw selection end; 06, fourth switching end; 07, fifth switching end. DETAILED DESCRIPTION
[0038] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.
[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.
[0040] First, the related art and its defects, as well as the solutions of the embodiments of the present disclosure proposed to improve the related art and its defects are briefly described.
[0041] At present, traditional adjustable couplers usually achieve different intensities and coupling degrees during signal transmission by adjusting the parameters of their internal components. However, when adjusting related parameters such as adjusting the capacitance value of the internal variable capacitor, the change in capacitance value will affect the electromagnetic coupling between the internal main line and the auxiliary line, which in turn leads to insufficient stability in the coupling adjustment and the inability to flexibly adjust the coupling degree during signal transmission.
[0042] In addition, conventional adjustable couplers are usually large in size and often occupy more space on printed circuit boards (PCBs), which is not conducive to compact integration on printed circuit boards with limited space, thus limiting the circuit application of conventional adjustable couplers.
[0043] Moreover, conventional adjustable couplers usually require complex connections and wiring with other circuit elements, further increasing the complexity of design and layout. This can easily lead to wiring difficulties and signal interference, especially when making line connections on high-density printed circuit boards.
[0044] When a conventional adjustable coupler is disposed on a highly integrated printed circuit board, since the conventional adjustable coupler usually requires an additional power supply to ensure its normal operation, the high power consumption generated by the conventional adjustable coupler will introduce additional heat, and thus separate heat dissipation and power consumption management issues often need to be considered.
[0045] In response to at least one of the above-mentioned defects, an embodiment of the present disclosure provides a multi-stage coupling switching circuit, which achieves flexible adjustment of the coupling degree during signal transmission by sequentially turning on at least one single-pole single-throw switch, thereby further improving the signal transmission efficiency.
[0046] The multi-stage coupling switching circuit provided by the embodiments of the present disclosure is exemplarily described below in conjunction with the accompanying drawings.
[0047] Figure 1 A schematic diagram of a multi-stage coupling switching circuit provided in an embodiment of the present disclosure, referring to Figure 1 The circuit includes: at least two couplers 110, at least two single-pole single-throw switches 120 and a single-pole multi-throw switch 130; each coupler 110 includes at least an input terminal 01, an output terminal 02 and a coupling terminal 03; each coupler 110 is cascaded; the coupling terminal 03 of the upper-stage coupler 110 is connected to the input terminal 01 of the lower-stage coupler 110 through a single-pole single-throw switch 120, and the output terminal 02 of the lower-stage coupler 110 is connected to the single-pole multi-throw switch 130; the coupling terminal 03 of the last-stage coupler 110 is connected to the single-pole multi-throw switch 130; the cascaded couplers 110 are used to couple and output a first-order coupling signal or a multi-order coupling signal based on at least one single-pole single-throw switch 120 that is turned on in sequence.
[0048] The cascade setting is a setting method for associating at least two couplers 110 by connecting them in sequence. For example, two cascaded couplers 110, four couplers 110, or another number of couplers 110 may be set, and a corresponding number of couplers 110 may be set according to coupling requirements during signal transmission, which is not limited here.
[0049] The single-pole single-throw switch 120 is used to realize the on-off of the line where it is located, and the single-pole multi-throw switch 130 is used to select and conduct multiple lines where the single-pole single-throw switch 120 is located based on the switch switching function.
[0050] For the scenario of first-order coupling, specifically, based on the cascade setting of each coupler 110, when the single-pole single-throw switch 120 connected to the coupling end 03 of the first-stage coupler 110 is closed, the coupling end 03 of the first-stage coupler 110 couples and outputs a first-order coupling signal to the single-pole multi-throw switch 130. If the single-pole multi-throw switch 130 is controlled to turn on the line where the single-pole single-throw switch 120 is located, the single-pole multi-throw switch 130 continues to transmit the first-order coupling signal to other related ports. The specific types of the related ports will be described later.
[0051] For the scenario of multi-order coupling, illustratively, taking the second-order coupling as an example, on the basis of the cascade setting of each coupler 110, the coupling end 03 of the first-stage coupler 110 and the single-pole single-throw switch 120 connected to the coupling end 03 of the second-stage coupler 110 are both closed, and the single-pole multi-throw switch 130 is controlled to turn on the line where the single-pole single-throw switch 120 connected to the coupling end 03 of the second-stage coupler 110 is located, the first-order coupling signal coupled and output by the coupling end 03 of the first-stage coupler 110 is transmitted to the input end of the second-stage coupler 110, the second-stage coupler 110 performs second-order coupling on the first-order coupling signal and couples and outputs the second-order coupling signal by the coupling end 03 of the second-stage coupler 110, and then the single-pole multi-throw switch 130 continues to transmit the second-order coupling signal to other related ports.
[0052] In combination with the second-order coupling scenario described above, the above method can also be used to achieve the adjustment of other coupling degrees, such as: taking the first-stage coupler 110 as a reference, turning on a preset number of single-pole single-throw switches 120 in sequence, such as turning on three single-pole single-throw switches 120 in sequence, and then obtaining a third-order coupling signal input to the single-pole multi-throw switch 130, which is not limited or elaborated here.
[0053] It can be understood that when all the single-pole single-throw switches 120 are closed and the single-pole multi-throw switch 130 is controlled to turn on the line where the single-pole single-throw switch 120 to which the coupling end 03 of the last-stage coupler 110 is connected is located, the first-order coupling signal coupled and output by the coupling end 03 of the first-stage coupler 110 will be transmitted sequentially through the cascaded couplers 110 until the coupling end 03 of the last-stage coupler 110 outputs a multi-order coupling signal, for example: the multi-order coupling signal can be a second-order coupling signal, a third-order coupling signal, a fourth-order coupling signal, or a coupling signal of other orders, which is not limited here.
[0054] In addition, the number of the couplers 110 is the same as the number of the single-pole single-throw switches 120 , so that the coupling ends 03 of the couplers 110 and the single-pole single-throw switches 120 correspond one to one.
[0055] The multi-stage coupling switching circuit provided by the embodiment of the present disclosure includes: at least two couplers 110, at least two single-pole single-throw switches 120 and a single-pole multi-throw switch 130; each coupler 110 includes at least an input end 01, an output end 02 and a coupling end 03; each coupler 110 is cascaded; the coupling end 03 of the upper-stage coupler 110 is connected to the input end 01 of the lower-stage coupler 110 through a single-pole single-throw switch 120, and the output end 02 of the lower-stage coupler 110 is connected to the single-pole multi-throw switch 130; the coupling end 03 of the last-stage coupler 110 is connected to the single-pole multi-throw switch 130; the cascaded couplers 110 are used to couple and output a first-order coupling signal or a multi-order coupling signal based on at least one single-pole single-throw switch 120 that is turned on in sequence. In this way, by turning on at least one single-pole single-throw switch 120 in sequence, the coupling degree during signal transmission is flexibly adjusted, and the efficiency of signal transmission is further improved.
[0056] In some embodiments, Figure 2 A schematic diagram of another multi-stage coupling switching circuit provided in an embodiment of the present disclosure, in Figure 1 Based on Figure 2 , at least two couplers include a first coupler 111, a second coupler 112, a third coupler 113 and a fourth coupler 114 which are cascaded in sequence; the first coupler 111, the second coupler 112, the third coupler 113 and the fourth coupler 114 are all directional couplers.
[0057] The directional coupler is a passive device. Therefore, when the cascaded directional couplers are used to realize multi-order coupling of signal transmission, no additional power consumption and heat will be generated, which further saves the power of the entire system and meets the low power consumption requirements of the entire circuit.
[0058] For example, Figure 2Taking the structure shown as an example, Figure 2 shows four couplers cascaded in sequence: the first coupler 111 is cascaded to the second coupler 112, the second coupler 112 is cascaded to the third coupler 113, and the third coupler 113 is cascaded to the fourth coupler 114; taking the first coupler 111 as a reference, by sequentially turning on at least one single-pole single-throw switch backward, flexible adjustment of the first-order coupling degree to the fourth-order coupling degree can be achieved, thereby meeting different application requirements.
[0059] The multi-order coupling switching circuit provided in the embodiment of the present disclosure has multi-order adjustable coupling degrees. For example, by setting four cascaded couplers, a fourth-order adjustable coupling degree can be achieved. At the same time, the coupling degree can be flexibly adjusted according to the actual needs of the system to optimize the signal transmission effect and further improve the signal transmission quality, system efficiency and performance.
[0060] In some embodiments, Figure 1 Based on this, continue to refer to Figure 2 The multi-stage coupling switching circuit also includes a first straight-through end 141 and a second straight-through end 142; the first straight-through end 141 is connected to the input end 01 of the first coupler 111, and the output end 02 of the first coupler 111 is connected to the second straight-through end 142; the first straight-through end 141 is used to input the signal to be coupled; the second straight-through end 142 is used to output the signal to be coupled.
[0061] Among them, the first direct-through terminal 141 and the second direct-through terminal 142 are ports for realizing direct signal input and output. It should be noted that in the signal direct input and output scenario, each single-pole single-throw switch is disconnected, and the single-pole multi-throw switch 130 can be switched arbitrarily to improve the isolation of the system. For example, in an ideal state, the entire circuit only has a wiring insertion loss, thereby ensuring that the signal such as the coupled signal can be transmitted in an almost intact state.
[0062] Specifically, for the signal direct input and output scenario, the signal to be coupled is input to the first straight-through end 141, transmitted to the output end 02 of the first coupler 111 through the input end 01 of the first coupler 111, and then continuously transmitted to the second straight-through end 142 and the signal to be coupled is directly outputted from the second straight-through end 142, thus realizing the direct input and output of the signal (such as the signal to be coupled). Exemplarily, the signal to be coupled may be a high-frequency signal or a signal in other forms.
[0063] In addition, when the multi-order coupling switching circuit provided in the embodiment of the present disclosure is used to realize multi-order coupling, the signal to be coupled input to the first straight-through end 141 will pass through the coupling end of the corresponding coupler in sequence, thereby outputting a multi-order coupling signal. The specific process of transmitting the signal to be coupled is exemplified in the following text.
[0064] In some embodiments, Figure 1 Based on this, continue to refer to Figure 2 The single-pole multi-throw switch 130 includes a first switching end 131, a second switching end 132, a third switching end 133 and a fourth switching end 134, which are selectively turned on; the output end 02 of the second coupler 112 is connected to the first switching end 131; the output end 02 of the third coupler 113 is connected to the second switching end 132; the output end 02 of the fourth coupler 114 is connected to the third switching end 133; the coupling end 03 of the fourth coupler 114 is connected to the fourth switching end 134.
[0065] For example, Figure 2 Taking the structure shown as an example, by connecting the output ends 02 of the second coupler 112, the third coupler 113 and the fourth coupler 114 to the first switching end 131, the second switching end 132 and the third switching end 133 respectively, three lines (represented by A, B, and C) are formed respectively; at the same time, the coupling end 03 of the fourth coupler 114 is connected to the fourth switching end 134 to form a fourth line (represented by D).
[0066] Among them, the first switching end 131, the second switching end 132, the third switching end 133 and the fourth switching end 134 are ports for realizing switch switching, so that the single-pole multi-throw switch 130 selectively conducts the corresponding circuits. Specifically, when the single-pole multi-throw switch 130 is switched to the first switching end 131, the circuit A is conducted to receive the first-order coupling signal; when the single-pole multi-throw switch 130 is switched to the second switching end 132, the circuit B is conducted to receive the second-order coupling signal; when the single-pole multi-throw switch 130 is switched to the third switching end 133, the circuit C is conducted to receive the third-order coupling signal; when the single-pole multi-throw switch 130 is switched to the fourth switching end 134, the circuit D is conducted to receive the fourth-order coupling signal.
[0067] In some embodiments, Figure 1 Based on this, continue to refer to Figure 2 , the single-pole multi-throw switch 130 is a single-pole four-throw switch.
[0068] Among them, the corresponding type of single-pole multi-throw switch 130 can also be selected according to the number of cascaded couplers, such as: if the number of cascaded couplers is 6, a single-pole six-throw switch can be set to connect them; if the number of cascaded couplers is 8, a single-pole eight-throw switch can be set to connect them. In other embodiments, other types of single-pole multi-throw switches 130 known to technicians in this field can also be used to implement the above switch switching process, which is not limited here.
[0069] In some embodiments, Figure 1 Based on this, continue to refer to Figure 2, at least two single-pole single-throw switches 120 include a first single-pole single-throw switch 121, a second single-pole single-throw switch 122, a third single-pole single-throw switch 123 and a fourth single-pole single-throw switch 124; one end of the first single-pole single-throw switch 121 is connected to the coupling end 03 of the first coupler 111, and the other end is connected to the input end 01 of the second coupler 112; one end of the second single-pole single-throw switch 122 is connected to the coupling end 03 of the second coupler 112, and the other end is connected to the input end of the third coupler 113; one end of the third single-pole single-throw switch 123 is connected to the coupling end 03 of the third coupler 113, and the other end is connected to the input end 01 of the fourth coupler 114; one end of the fourth single-pole single-throw switch 124 is connected to the coupling end 03 of the fourth coupler 114, and the other end is connected to the fourth switching end 134.
[0070] The SPST switch includes a moving end and a fixed end (equivalent to the corresponding switching end of the SPMT switch). It is easy to understand that the SPST switch is closed by switching the moving end to the fixed end, and is opened otherwise.
[0071] For example, Figure 2 Taking the structure shown as an example, the moving end of the first single-pole single-throw switch 121 is connected to the coupling end 03 of the first coupler 111, and the fixed end is connected to the input end 01 of the second coupler 112; the moving end of the second single-pole single-throw switch 122 is connected to the coupling end 03 of the second coupler 112, and the fixed end is connected to the input end 01 of the third coupler 113; the moving end of the third single-pole single-throw switch 123 is connected to the coupling end 03 of the third coupler 113, and the fixed end is connected to the input end 01 of the fourth coupler 114; the moving end of the fourth single-pole single-throw switch 124 is connected to the coupling end 03 of the fourth coupler 114, and the fixed end is connected to the fourth switching end 134 of the single-pole multi-throw switch 130.
[0072] In other implementations, the fixed end of the single-pole single-throw switch may be connected to the coupling end 03 , and the moving end may be connected to the input end 01 , which is not limited here.
[0073] In some embodiments, Figure 1 Based on this, continue to refer to Figure 2 The multi-order coupling switching circuit also includes a target interaction terminal 150; the single-pole multi-throw switch 130 also includes a multi-throw enable terminal 135; the multi-throw enable terminal 135 is connected to the target interaction terminal 150; the target interaction terminal 150 is at least used to output a coupling signal; the multi-throw enable terminal 135 is at least used to input a first-order coupling signal to the target interaction terminal 150 based on switching to the first switching terminal 131, or to input a second-order coupling signal to the target interaction terminal 150 based on switching to the second switching terminal 132, or to input a third-order coupling signal to the target interaction terminal 150 based on switching to the third switching terminal 133, or to input a fourth-order coupling signal to the target interaction terminal 150 based on switching to the fourth switching terminal 134.
[0074] Among them, the coupler provided in the embodiment of the present disclosure may be a 10dB directional coupler to output coupling signals of different intensities in multi-order coupling scenarios, for example: a signal with an output coupling degree of 10dB, a signal with an output coupling degree of 20dB, a signal with an output coupling degree of 30dB, or a signal with an output coupling degree of 40dB, which is not limited here.
[0075] Table 1 is a switch logic truth table for multi-order coupling provided in an embodiment of the present disclosure. Referring to Table 1, multi-order coupling or first-order coupling can be achieved through the switch switching method shown in Table 1. Exemplarily, the single-pole single-throw switches connected to the first coupler 111, the second coupler 112, the third coupler 113, and the fourth coupler 114 can be represented by S1, S2, S3, and S4, respectively.
[0076] Table 1 Switching logic truth table for multi-order coupling
[0077]
[0078] Specifically, for the first-order coupling scenario, as shown in Table 1, the multi-throw selection terminal 135 is switched to the first switching terminal 131 and the first single-pole single-throw switch 121 is closed. At this time, after the signal to be coupled output by the first direct-through terminal 141 is input to the input terminal 01 of the first coupler 111, the coupling terminal 03 of the first coupler 111 couples and outputs a first-order coupling signal, which is equivalent to a 10dB attenuation of the signal to be coupled. After passing through the corresponding line (corresponding to line A), the first-order coupling signal is output by the target interaction terminal 150. In addition, it is not difficult to understand that the second single-pole single-throw switch 122, the third single-pole single-throw switch 123 and the fourth single-pole single-throw switch 124 are all disconnected at this time.
[0079] For the second-order coupling scenario, the multi-throw selection end 135 is switched to the second switching end 132 and the first single-pole single-throw switch 121 and the second single-pole single-throw switch 122 are both closed. At this time, the signal to be coupled is transmitted from the first coupler 111 to the second coupler 112, and the second-order coupling signal is coupled and output through the coupling end 03 of the second coupler 111, which is equivalent to a 20dB attenuation of the signal to be coupled. After passing through the corresponding line (corresponding to line B), the second-order coupling signal is output by the target interaction end 150. In addition, it is not difficult to understand that the third single-pole single-throw switch 123 and the fourth single-pole single-throw switch 124 are both disconnected at this time. By analogy, third-order coupling, fourth-order coupling or other coupling degrees can also be achieved based on Table 1, which will not be repeated here.
[0080] In some embodiments, Figure 1 Based on this, continue to refer to Figure 2The multi-stage coupling switching circuit also includes at least two isolation switching components 160; each coupler also includes an isolation terminal 04; the isolation terminal 04 is connected to the isolation switching component 160; the target interaction terminal 150 is also used to input a switching signal; the isolation switching component 160 is used to transmit a switching signal or isolate a coupling signal.
[0081] The number of the isolation switching components 160 and the number of the couplers are the same and correspond one to one.
[0082] It should be noted that the multi-stage coupling switching circuit provided in the embodiment of the present disclosure can also realize signal switching by using the single-pole multi-throw switch 130 in reverse, that is, the target interaction end 150 inputs a switching signal to the single-pole multi-throw switch 130, and based on the selective switching of the single-pole multi-throw switch 130, the corresponding isolation switching component 160 outputs a switching signal to realize the signal switching process.
[0083] Specifically, for the signal switching scenario, the single-pole multi-throw switch 130 can be switched to the first switching end 131, at which time the first single-pole single-throw switch 121 is closed, and the switching signal is transmitted through the line corresponding to line A, and then the isolation switching component 160 connected to the first coupler 111 outputs the switching signal; or, the single-pole multi-throw switch 130 can be switched to the second switching end 132, at which time the second single-pole single-throw switch 122 is closed, and the switching signal is transmitted through the line corresponding to line B, and then the isolation switching component 160 connected to the second coupler 112 outputs the switching signal. In this way, other signal transmission paths can also be selected using the above method to achieve signal switching, which will not be repeated here.
[0084] In addition to the above signal switching scenarios, the multi-order coupling switching circuit provided in the embodiment of the present disclosure can also flexibly adjust the coupling degree during signal transmission. At this time, the isolation switching components 160 connected to each coupler are used to achieve coupling signal isolation to improve the transmission quality of the first-order coupling signal or the multi-order coupling signal.
[0085] In some embodiments, Figure 3 A schematic diagram of the structure of another multi-stage coupling switching circuit provided by an embodiment of the present disclosure. Figure 1 and Figure 2 Based on Figure 3The isolation switching component 160 includes a single-pole double-throw switch 161, a grounding resistor 162 and a transceiver port 163; the single-pole double-throw switch 161 includes a double-throw selection terminal 05 and a fourth switching terminal 06 and a fifth switching terminal 07 that are selectively turned on; the double-throw selection terminal 05 is connected to the isolation terminal 04; the fourth switching terminal 06 is connected to the grounding resistor 162; the fifth switching terminal 07 is connected to the transceiver port 163; the grounding resistor 162 is used to isolate the coupled signal based on switching to the fourth switching terminal 06; the transceiver port 163 is used to transmit the switching signal based on switching to the fifth switching terminal 07.
[0086] Exemplarily, the resistance of the grounding resistor 162 may be 51Ω or other values, as long as a good isolation effect is ensured, which is not limited here.
[0087] In addition, Table 2 is a switch logic truth table for signal switching provided in an embodiment of the present disclosure. Referring to Table 2, the signal switching process can be realized by the switch switching method shown in Table 2; illustratively, the single-pole double-throw switches 161 connected to the first coupler 111, the second coupler 112, the third coupler 113 and the fourth coupler 114 can be represented by D1, D2, D3 and D4 respectively, and the transceiver ports 163 corresponding to each single-pole double-throw switch 161 can be represented by TRX1, TRX2, TRX3 and TRX4 respectively, and the corresponding grounding resistors 162 can be represented by R1, R2, R3 and R4 respectively.
[0088] Table 2 Switch logic truth table for signal switching
[0089]
[0090] Specifically, for the signal switching scenario, as shown in Table 2, if the single-pole multi-throw switch 130 is switched to the first switching end 131, the first single-pole single-throw switch 121 is closed, and the single-pole double-throw switch 161 connected to the first coupler 111 is switched to the fifth switching end 07, thereby transmitting the switching signal through the signal transmission path where line A is located, and finally outputting the switching signal by the corresponding transceiver port 163.
[0091] In combination with the signal switching scenario above, if the single-pole multi-throw switch 130 is switched to the third switching end 133, the third single-pole single-throw switch 123 is closed, and the single-pole double-throw switch 161 connected to the third coupler 113 is switched to the fifth switching end 07, thereby transmitting the switching signal through the signal transmission path where the line C is located, and finally outputting the switching signal by the corresponding transceiver port 163; accordingly, other signal transmission paths can also be selected based on Table 2 to transmit the switching signal, which will not be repeated here.
[0092] Compared with the prior art, which has the defect of using multiple independent devices separately for signal switching, the multi-stage coupling switching circuit provided in the embodiment of the present invention performs switch switching through a single-pole multi-throw switch to ensure efficient and convenient signal switching speed. At the same time, it combines cascaded couplers and other devices to transmit switching signals, thereby reducing the length of the signal transmission path and reducing the complexity, thereby improving the speed and response time of signal switching.
[0093] Likewise, under ideal conditions, the entire circuit only has insertion loss due to the routing, thereby ensuring that signals such as switching signals can be transmitted in an almost intact state.
[0094] Specifically, for the scenario of multi-order coupling (including first-order coupling), the single-pole double-throw switch 161 connected to each coupler in the multi-order coupling switching circuit is switched to the fourth switching end 06 to utilize the grounding resistor 162 to achieve coupling signal isolation, thereby achieving a good isolation effect; in addition, the specific coupling process of multi-order coupling (including first-order coupling) can be understood by referring to the relevant content above, and will not be repeated here.
[0095] In some embodiments, the multi-stage coupling switching circuit also includes a switch control component (not shown in the figure); each single-pole double-throw switch, each single-pole single-throw switch and single-pole multi-throw switch are connected to the switch control component; the switch control component is used to control the switching state of the single-pole double-throw switch, the single-pole single-throw switch and the single-pole multi-throw switch.
[0096] Among them, the double-throw selection end of the single-pole double-throw switch, the moving end of the single-pole single-throw switch and the multi-throw selection end of the single-pole multi-throw switch are all connected to the switch control component to be controlled by the switch control component to change the switch state.
[0097] Specifically, in combination with the above multi-order coupling scenarios and signal switching scenarios, the switch control component can realize the output of first-order coupling signals or multi-order coupling signals by controlling the switching states of the single-pole double-throw switch, the single-pole single-throw switch, and the single-pole multi-throw switch, or realize the output of switching signals under different signal transmission paths, that is, change the output direction of the switching signal. The specific control process of the switch state can be understood by referring to Tables 1 and 2, which will not be repeated here.
[0098] In some embodiments, the multi-stage coupling switching circuit further includes a packaging shell to support and protect corresponding devices in the multi-stage coupling switching circuit.
[0099] The multi-stage coupling switching circuit provided in the embodiment of the present disclosure not only provides the function of a step-adjustable coupler, but also provides the switching function of a single-pole multi-throw switch, so that the coupling degree during signal transmission can be flexibly adjusted according to actual needs, or flexible signal switching can be achieved by changing the signal transmission path.
[0100] From this, it can be understood that the multi-stage coupling switching circuit combines the functions of multi-stage coupling and signal switching by integrating a single-pole multi-throw switch and a cascaded coupler, thereby being able to integrate multiple functions into one product and improving the integration of the entire product. In this way, users do not need to purchase and use single-pole multi-throw switches and traditional adjustable couplers separately, further reducing application costs and system complexity.
[0101] In view of the above advantages, the multi-order coupling switching circuit can be applied in multiple fields, for example: it can be applied to communication equipment, test and measurement instruments, radio spectrum analyzers, etc. It can not only realize flexible signal routing in communication equipment, but also realize signal transmission with flexible and adjustable coupling degree in test and measurement instruments, thereby effectively reducing the difficulty of development and commissioning of high-frequency signal products.
[0102] Exemplarily, when a multi-stage coupling switching circuit is applied to communication equipment, such as base stations, radio communication systems, and network equipment, low-power signals or high-power signals can be flexibly routed and switched in the multi-stage coupling switching circuit, thereby enabling users to select different signal sources and targets, thereby improving operational convenience.
[0103] Exemplarily, when the multi-order coupling switching circuit is applied to test and measuring instruments, such as signal analyzers, spectrum analyzers, network analyzers and other equipment, the multi-order coupling switching circuit can flexibly adjust the coupling degree of signal transmission based on the signal source and target selected by the user to meet different testing requirements.
[0104] For example, when the multi-order coupling switching circuit is applied to radio spectrum analyzers, scientific research and laboratory research, and industrial automation systems, by flexibly adjusting the signal transmission path or the coupling degree during signal transmission, it is possible to accurately analyze and measure radio signals in different frequency bands, facilitate various experimental studies, and enable users to switch and share signals between different devices or systems, thereby improving production efficiency and system integration.
[0105] As a result, it has broad application potential in communications, test and measurement, spectrum analysis, laboratory research, and industrial automation. Its high integration and flexibility make it an ideal choice for improving system efficiency and functionality.
[0106] Compared with the prior art, the traditional adjustable coupler is large in size and the traditional adjustable coupler and single-pole multi-throw switch need to be purchased and used separately. The multi-stage coupling switching circuit provided by the embodiment of the present disclosure has a high degree of integration, thereby reducing the number of independent components required in the system, thereby simplifying the system architecture, reducing space occupancy, and integrating multiple functions while maintaining a compact layout, so as to be suitable for devices or systems with limited functions.
[0107] Moreover, the traditional adjustable coupler has high power consumption, while the multi-stage coupling switching circuit provided in the embodiment of the present disclosure only needs to power the switch control component, thereby achieving good energy-saving effect.
[0108] It should be noted that the cascade coupler in the multi-order coupling switching circuit also has the advantages of traditional adjustable couplers, such as: a wider frequency band and lower insertion loss, so that the signal attenuation when the coupled signal is input into the corresponding coupler is smaller, which is conducive to ensuring the quality and accuracy of signal transmission.
[0109] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0110] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A multi-stage coupling switching circuit, characterized in that: include: At least two couplers, at least two single-pole single-throw switches and one single-pole multi-throw switch; each of the couplers at least includes an input end, an output end and a coupling end; The couplers are arranged in cascade; the coupling end of the coupler of the previous stage is connected to the input end of the coupler of the next stage through a single-pole single-throw switch, and the output end of the coupler of the next stage is connected to the single-pole multi-throw switch; the coupling end of the coupler of the last stage is connected to the single-pole multi-throw switch; The coupler arranged in cascade is used to couple and output a first-order coupling signal or a multi-order coupling signal based on at least one single-pole single-throw switch that is turned on in sequence.
2. The multi-stage coupling switching circuit according to claim 1, characterized in that: The at least two couplers include a first coupler, a second coupler, a third coupler and a fourth coupler which are cascaded in sequence; The first coupler, the second coupler, the third coupler and the fourth coupler are all directional couplers.
3. The multi-stage coupling switching circuit according to claim 2, characterized in that: Also includes a first straight-through end and a second straight-through end; The first through-end is connected to the input end of the first coupler, and the output end of the first coupler is connected to the second through-end; The first through-end is used for inputting a signal to be coupled; and the second through-end is used for outputting the signal to be coupled.
4. The multi-stage coupling switching circuit according to claim 2, characterized in that: The single-pole multi-throw switch includes a first switching end, a second switching end, a third switching end and a fourth switching end that are selectively turned on; The output end of the second coupler is connected to the first switching end; the output end of the third coupler is connected to the second switching end; the output end of the fourth coupler is connected to the third switching end; and the coupling end of the fourth coupler is connected to the fourth switching end.
5. The multi-stage coupling switching circuit according to claim 4, characterized in that: The single-pole multi-throw switch is a single-pole four-throw switch.
6. The multi-stage coupling switching circuit according to claim 4, characterized in that: The at least two single-pole single-throw switches include a first single-pole single-throw switch, a second single-pole single-throw switch, a third single-pole single-throw switch, and a fourth single-pole single-throw switch; One end of the first single-pole single-throw switch is connected to the coupling end of the first coupler, and the other end is connected to the input end of the second coupler; one end of the second single-pole single-throw switch is connected to the coupling end of the second coupler, and the other end is connected to the input end of the third coupler; one end of the third single-pole single-throw switch is connected to the coupling end of the third coupler, and the other end is connected to the input end of the fourth coupler; one end of the fourth single-pole single-throw switch is connected to the coupling end of the fourth coupler, and the other end is connected to the fourth switching end.
7. The multi-stage coupling switching circuit according to claim 4, characterized in that: It also includes a target interaction terminal; the single-pole multi-throw switch also includes a multi-throw selection terminal; The multi-throw selection terminal is connected to the target interaction terminal; The target interaction end is at least used to output a coupled signal; The multi-throw selection end is at least used to input the first-order coupling signal to the target interaction end based on switching to the first switching end, or to input the second-order coupling signal to the target interaction end based on switching to the second switching end, or to input the third-order coupling signal to the target interaction end based on switching to the third switching end, or to input the fourth-order coupling signal to the target interaction end based on switching to the fourth switching end.
8. The multi-stage coupling switching circuit according to claim 7, characterized in that: It also includes at least two isolation switching components; each of the couplers also includes an isolation terminal; The isolation end is connected to the isolation switching component; The target interaction end is also used to input a switching signal; the isolation switching component is used to transmit the switching signal or isolate the coupling signal.
9. The multi-stage coupling switching circuit according to claim 8, characterized in that: The isolation switching component includes a single-pole double-throw switch, a grounding resistor and a transceiver port; the single-pole double-throw switch includes a double-throw selection terminal and a fourth switching terminal and a fifth switching terminal that are selectively turned on; The double-throw selection terminal is connected to the isolation terminal; the fourth switching terminal is connected to the grounding resistor; and the fifth switching terminal is connected to the transceiver port; The grounding resistor is used to isolate the coupled signal based on switching to the fourth switching end; The transceiver port is used to transmit the switching signal based on switching to the fifth switching end.
10. The multi-stage coupling switching circuit according to claim 9, characterized in that: Also includes a switch control component; Each of the single-pole double-throw switches, each of the single-pole single-throw switches, and the single-pole multi-throw switch is connected to the switch control component; The switch control component is used to control the switch states of the single-pole double-throw switch, the single-pole single-throw switch and the single-pole multi-throw switch.