Switch selection assembly of calibration switch array
By employing 12 frequency signal input channels and a single-pole four-throw switch combined with a 3dB attenuator in the calibration switch array, the problems of high hardware complexity and poor phase consistency of traditional calibration switch arrays are solved, achieving low-loss and high-isolation signal processing effects, which are suitable for communication, test and measurement and data acquisition scenarios.
Patent Information
- Application Number
- CN202422686356.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Traditional calibration switch arrays have high hardware design complexity and cost when supporting multiple channels, and have high requirements for phase and amplitude consistency, making it difficult to meet high precision requirements.
The design employs 12 frequency signal input channels, 12 sub-switch selection components, and 1 main switch selection component. Each frequency signal input channel is connected to a sub-switch selection component, and the output of the sub-switch selection component is connected to the main switch selection component. A single-pole four-throw switch and a 3dB attenuator are used for matching to improve inter-stage matching performance and phase consistency.
It achieves low loss, excellent phase consistency and high isolation of the switching network, reduces hardware complexity and cost, and is suitable for scenarios that process a large number of signal inputs.
Smart Images
Figure CN223528053U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of microwave communication, especially relates to a switch selection subassembly of calibration switch array. BACKGROUND
[0002] The calibration switch array usually contains a plurality of switch elements, which can be switched according to certain logic and rules to realize the calibration, selection and distribution of signals. It contains single-pole double-throw switch, combiner and various electronic elements, through the ingenious circuit design, so that the input signal can be calibrated and selected, and then output to the designated channel.
[0003] When the conventional calibration switch array needs to support multiple channels, the hardware design becomes complex, each channel needs corresponding switch elements, connectors and signal conditioning circuits, which increases the hardware complexity and cost of the system; at the same time, the calibration switch array has higher consistency requirements for the phase and amplitude of each channel on the multiple channels. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a switch selection subassembly of calibration switch array for the calibration, selection and distribution of signals.
[0005] The utility model aims at realizing in this way: a switch selection subassembly of calibration switch array, including 12 groups of frequency signal input channels, 12 groups of split switch selection subassemblies, 1 group of total switch selection subassembly, the input channel of each group is communicated with the input end of split switch selection subassembly, the output end of split switch selection subassembly is communicated with the input end of total switch selection subassembly, and total switch selection subassembly outputs a road signal.
[0006] Preferably, each group of frequency signal input channels contains 12 signal inputs.
[0007] Preferably, the split switch selection subassembly and total switch selection subassembly are all composed of four single-pole four-throw switches, and the output end of three single-pole four-throw switches is connected with the input end of the remaining single-pole four-throw switch.
[0008] Preferably, the input and output end of each single-pole four-throw switch is connected with 3dB attenuator.
[0009] Preferably, the input end of each group of split switch selection subassembly is the input end of three single-pole four-throw switches and is composed of 12 signal receiving channels.
[0010] Compared with the prior art, the utility model has the advantages of:
[0011] 1. Each single switch selection assembly is composed of multiple single pole four throw switches and multiple attenuators, and the input and output ends of each single pole four throw switch are connected with 3dB attenuators to match the input and output ports of the switch;
[0012] 2. The 3dB attenuators are used to match each stage of the single pole four throw switch chip to improve the inter-stage matching performance, and the phase consistency between the 12-way switch networks can reach about 2°, and the phase consistency of the entire switch network case can reach 4°-6°.
[0013] 3. The insertion loss of the single pole four throw switch is less than 2dB, so the insertion loss of the 12-way switch network is less than 13dB, and the insertion loss of the entire switch network is less than 26dB; since the 3dB attenuator is connected in series on each way, the isolation of the 12-way switch network is greater than 36dB. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 It is a flowchart of the utility model.
[0015] Fig. 2 It is a structural diagram of the utility model separating the switch selection assembly and the total switch selection assembly.
[0016] Fig. 3 It is a structural diagram of the utility model separating the switch selection assembly and the total switch selection assembly. DETAILED DESCRIPTION
[0017] The embodiments of the utility model will be described below by specific examples, and those skilled in the art can easily understand other advantages and effects of the utility model from the disclosed content of the specification.
[0018] It should be understood that, in the description of the utility model, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, structure and operation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance. The terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0019] In the description of the utility model, still need explaining, unless another explicit provision and limitation, term '' set '', '' install '', '' link '', '' connect '' should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two element inside intercommunication. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.
[0020] As Figs. 1-3 The utility model discloses a switch selection component of calibration switch array, including 12 groups of frequency signal input channels, 12 groups of sub switch selection components, 1 group total switch selection component, the input end of each group of frequency signal input channels is communicated with sub switch selection component, and the input end of total switch selection component is communicated with the output end of sub switch selection component, and total switch selection component outputs a signal.
[0021] As Figs. 1-2 Each group of frequency signal input channels contains 12 signal inputs, and 12 groups of frequency signal input channels are 144 signal channels, and are especially suitable for the scene needing to process a large number of signal inputs, such as communication, test measurement, data acquisition and the like.
[0022] As Figs. 1-2 The sub switch selection component and total switch selection component are all composed of four single-pole four-throw switches, and the output end of three single-pole four-throw switches is connected with the input end of the remaining single-pole four-throw switch, that is, three single-pole four-throw switches are connected in parallel to the remaining single-pole four-throw switch, that is, a group of sub switch selection components has 12 signal receiving ends and one signal output end.
[0023] As Figs. 1-2 The input and output end of each single-pole four-throw switch is connected with a 3dB attenuator (not shown in the figure), and a 3dB attenuator is matched between each stage of the single-pole four-throw switch chip, so that the interstage matching performance is improved, according to measurement, the phase consistency between 12 switch networks can reach about 2°, and the phase consistency of the entire switch network case can reach 4°-6°, since a 3dB attenuator is connected in series on each road, therefore, the isolation of 12 switch networks is greater than 36dB.
[0024] As Figs. 1-2 The input end of each group of sub switch selection components is a 12-way signal receiving channel composed of the input end of three single-pole four-throw switches, and 12 groups of sub switch selection components are 144-way signal receiving channels, which can simultaneously receive 144 different input signals.
[0025] The working principle of the utility model is described as follows: the calibration switch array is mainly used for selecting the output of the first to 144th paths under the control of the control signal after the 144-path signal coupled and output by the power amplifier in the system through the switch network; the 3dB attenuator is used for improving the inter-stage matching performance and the phase consistency between the 12-path switch networks; the utility model has small overall structure size. The size is only 665*181*180mm 3 , the weight is only about 25kg, and the power consumption is about 10W.
[0026] The above-described embodiments are merely used for describing the preferred embodiments of the utility model, and do not limit the design concept and scope of the utility model. Without departing from the design concept of the utility model, various modifications and improvements to the technical scheme of the utility model made by the ordinary person in the art shall fall into the protection scope of the utility model, and the technical content of the utility model claimed for protection has been entirely recorded in the claim.
Claims
1. A switch selection component for calibrating a switch array, characterized in that, The frequency signal input channel includes 12 groups of frequency signal input channels, 12 groups of sub-switch selection components, and 1 group of total switch selection components.
2. A switch selection assembly for calibrating a switch array according to claim 1, wherein, Each group of frequency signal input channels includes 12 signal inputs.
3. A switch selection assembly for calibrating a switch array according to claim 1, wherein, The sub-switch selection component and the total switch selection component are each composed of four single-pole four-throw switches, wherein the output ends of three single-pole four-throw switches are connected to the input end of the remaining single-pole four-throw switch.
4. A switch selection assembly for calibrating a switch array according to claim 3, wherein, The input and output ends of each single-pole four-throw switch are connected with 3dB attenuators.
5. A switch selection assembly for calibrating a switch array according to claim 1, wherein, The input end of each group of sub-switch selection components is a 12-way signal receiving channel composed of the input ends of three single-pole four-throw switches.
6. A switch selection assembly for calibrating a switch array according to claim 3, wherein, The insertion loss of the single-pole four-throw switch is less than 2dB.