Feed coupler

Abstract

The present invention relates to a feed coupler, comprising a coupler body, wherein an input port, an output port, and a coupled output port are provided on the coupler body; a load and a feed module are provided within the coupler body; the input port is connected to the output port, the input port inputs signals and power, and the output port outputs a portion of the signals and power; the input end of the feed module is connected to the input port, inputs a portion of the signals and power; the output end of the feed module is divided into two paths, one connected to the coupled output port for outputting signals and power, and the other connected to the load. The coupler of the present invention can power the output port and the coupled output port circuits, effectively solving the power supply problem of various devices integrated into the circuits; improving system stability; and systematic circuit feeding.

Description

Technical Field

[0001] The present invention relates to the field of couplers, and in particular to a feeding coupler. Background Art

[0002] Traditional passive couplers couple signal outputs but cannot provide power for the coupled output terminals. They require on-site power extraction, which presents the following problems: a separate power supply unit is required at the installation site, resulting in high system costs; the system cannot be connected to the same UPS power supply in the computer room due to site conditions, leading to localized signal failures due to on-site power outages; existing antenna feeder couplers and power splitters are passive components and cannot transmit power within the system line. Summary of the Invention

[0003] The object of the present invention is to provide a feeding coupler to solve the problems in the prior art that passive couplers need to be powered on-site, resulting in high system costs and no signal when the on-site power supply is interrupted.

[0004] The present invention provides a feeding coupler, comprising a coupler body, wherein an input port, an output port and a coupled output port are provided on the coupler body, a load and a feeding module are provided inside the coupler body, the input port is connected to the output port, the input port inputs a signal and a power supply, the output port outputs part of the signal and the power supply, the input end of the feeding module is connected to the input port, inputs part of the signal and the power supply, and the output end of the feeding module is divided into two paths, one path is connected to the coupled output port for outputting a signal and a power supply, and the other path is connected to the load.

[0005] Furthermore, the feeding module includes a filtering feeding module and a feeding isolation module, the input end of the filtering feeding module is connected to the input port of the coupler body, the filtering feeding module is connected to the feeding isolation module, and the feeding isolation module is connected to the load and the impedance matching resistor R.

[0006] Furthermore, the filtering feeding module includes capacitors C1, C2, C3 and inductors L1, L2, the feeding isolation module is capacitor C4, the input ends of the capacitor C1 and the inductor L1 are connected to the input port of the coupler body, the output end of the inductor L1 is connected to the capacitor C2, capacitor C4 and inductor L2, the output end of the inductor L2 is connected to the capacitor C3 and the coupling output port, and the output ends of the capacitors C1, C2 and C3 are grounded.

[0007] Furthermore, the coupling output port is connected to an external composite antenna to provide signals and power to the composite antenna.

[0008] The beneficial effects of adopting the above technical solution of the present invention are:

[0009] The coupler of the present invention can power the output port and the coupled output port line, effectively solving the power supply problem of various devices integrated in the line; improving system stability, systematic line feeding, and timely detecting whether the working status of each device component is normal through the line power detection system; providing a feed isolation module to achieve isolation of power and signal, avoiding the power flow to the impedance matching resistor R and the load to form an unnecessary power loop, which increases the heating of the load resistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Schematic diagram of the structure of the feed coupler of the present invention;

[0011] Figure 2 for Figure 1 Enlarged view of part A;

[0012] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0013] 1-coupler body, 2-input port, 3-output port, 4-coupled output port, 5-load. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0015] like Figure 1-2 As shown, the present invention provides a feeding coupler, including a coupler body 1, on which an input port 2, an output port 3 and a coupled output port 4 are provided, and a load 5 and a feeding module are provided inside the coupler body 1, wherein the input port 2 is connected to the output port 3, the input port 2 inputs a signal and a power supply, and the output port 3 outputs part of the signal and the power supply, the input end of the feeding module is connected to the input port 2, and inputs part of the signal and the power supply, and the output end of the feeding module is divided into two paths, one path is connected to the coupled output port 4 for outputting a signal and a power supply, and the other path is connected to the load 5.

[0016] The feeding module includes a filtering feeding module and a feeding isolation module. The input end of the filtering feeding module is connected to the input port 2 of the coupler body 1. The filtering feeding module is connected to the feeding isolation module. The feeding isolation module is connected to the load 5 and the impedance matching resistor R.

[0017] The filtering feeding module includes capacitors C1, C2, C3 and inductors L1 and L2. The feeding isolation module is capacitor C4. The input ends of the capacitor C1 and the inductor L1 are connected to the input port 2 of the coupler body 1. The output end of the inductor L1 is connected to the capacitor C2, the capacitor C4 and the inductor L2. The output end of the inductor L2 is connected to the capacitor C3 and the coupling output port 4. The output ends of the capacitors C1, C2 and C3 are grounded.

[0018] The coupling output port 4 is connected to an external composite antenna to provide signals and power to the composite antenna.

[0019] In this embodiment, the composite signal (signal + power) in the previous-stage circuit enters the feed-type coupler through the coupler's input port 2. One path of the composite signal can be directly output from output port 3 as a composite signal of signal plus power to the next-stage circuit. The other path passes through the matched filter feed module composed of C1, L1, C2, L2, and C3 to output the signal and power to the coupled output port 4. The C4 feed isolation module isolates the power and signal, preventing power from flowing to the impedance-matching resistor R and load 5, forming an unnecessary power loop and increasing heating of the load 5 and the impedance-matching resistor R. The mixed signal output from the coupled output port 4 is supplied to a composite antenna with different functions (Bluetooth positioning or IoT sensor) or a downstream circuit device, solving the power supply problem of multiple devices connected to the coupler.

[0020] In summary, the present invention can power the output port 3 or the coupled output end line by the coupler, effectively solving the power supply problem of various devices integrated into the line; improving system stability, systematic line feeding, and can timely detect whether the working status of each device component is normal through the line power detection system.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A feed coupler, characterized in that: The coupler comprises a coupler body, wherein an input port, an output port and a coupled output port are provided on the coupler body, a load and a feed module are provided inside the coupler body, the input port is connected to the output port, the input port inputs signals and power, the output port outputs part of the signals and power, the input end of the feed module is connected to the input port, inputs part of the signals and power, the output end of the feed module is divided into two paths, one path is connected to the coupled output port for outputting signals and power, and the other path is connected to the load; The feeding module comprises a filtering feeding module and a feeding isolation module, wherein the feeding isolation module is a second capacitor (C4), and the feeding isolation module realizes the isolation of power supply and signal; the filtering feeding module comprises a first capacitor (C1), a second capacitor (C2), a third capacitor (C3), a first inductor (L1) and a second inductor (L2), wherein one end of the first capacitor (C1) and the first inductor (L1) are connected to the input port of the coupler body, the other end of the first inductor (L1) is respectively connected to one end of the second capacitor (C2), the second inductor (L2) and the second capacitor (C4), the other end of the second inductor (L2) is connected to one end of the third capacitor (C3) and the coupling output port, the other end of the first capacitor (C1) and the third capacitor (C3) is grounded, and the other end of the second capacitor (C4) is respectively connected to one end of a load and an impedance matching resistor R, and the other ends of the load and the impedance matching resistor R are both grounded.

2. The feed coupler according to claim 1, wherein: The coupling output port is connected to an external composite antenna to provide signals and power to the composite antenna.

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