CN115101913A

CN115101913A - Direct current coupler

Info

Publication number: CN115101913A
Application number: CN202210884519.5A
Authority: CN
Inventors: 刘萌; 李峰; 陈婵华; 姬庆
Original assignee: Hebei Yousheng Communication Technology Co ltd
Current assignee: Hebei Yousheng Communication Technology Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-09-23

Abstract

The invention discloses a direct current coupler, which is characterized in that: the cavity is internally provided with a first inner conductor and a second inner conductor, the cavity is externally provided with a connector and a tuning screw rod, the cavity, the first inner conductor, the second inner conductor and the connector form a strip line structure coupler, the first inner conductor and the second inner conductor are coupled through space, fixing media are arranged at the end part and the bottom part of the first inner conductor and the second inner conductor, the tuning screw rod is arranged at the outer side of the cavity, and the tuning screw rod penetrates through the cavity and abuts against the outer surface of the second inner conductor; and a tuning cover plate is fixedly arranged at the upper end of the cavity. The direct current coupler has a simple and ingenious structure, has multiple functions compared with the conventional coupler, realizes the work of the direct current coupler in the frequency band of 800-3700MHZ by adjusting the distance between the first inner conductor and the second inner conductor through the tuning screw rod, and also ensures that the direct current passing capability is realized among all radio frequency ports of the coupler.

Description

Direct current coupler

Technical Field

The invention belongs to the field of communication, and particularly relates to a direct-current coupler.

Background

The coupler is a universal microwave/millimeter wave component, can be used for isolation, separation and mixing of signals, such as power monitoring, source output power amplitude stabilization, signal source isolation, frequency sweep test of transmission and reflection and the like, and is widely applied to communication systems. In the existing dc coupler, the control of the input and output signal frequencies is limited, and the precise tuning by the relevant devices is not possible, so that it is difficult to obtain the desired frequency signal.

Disclosure of Invention

The present invention is directed to a dc coupler, which solves the problems of the prior art. In order to realize the purpose, the invention adopts the technical scheme that:

a direct current coupler comprises a cavity, wherein a first inner conductor and a second inner conductor are arranged in the cavity, a connector and a tuning screw rod are arranged outside the cavity, the first inner conductor, the second inner conductor and the connector form a strip line structure coupler, the first inner conductor and the second inner conductor are coupled through space, fixing media are arranged at the end part and the bottom part of the first inner conductor and the second inner conductor, the tuning screw rod is arranged on the outer side of the cavity, and the tuning screw rod penetrates through the cavity and abuts against the outer surface of the second inner conductor; and a tuning cover plate is fixedly arranged at the upper end of the cavity.

Preferably, the rear end of the first inner conductor is connected with a power resistor, and the power resistor is arranged at the inner side edge of the cavity.

Preferably, the whole type of the department that is of first inner conductor designs along first inner conductor bottom direction is equipped with first ladder position, second ladder position and third ladder position in proper order, first ladder position, second ladder position and third ladder position with the interval of second inner conductor shortens in proper order.

Preferably, the connector includes direct current port, input port and coupling port, direct current port establishes the outside of cavity and is connected with the one end of second inner conductor, input port establishes relatively the opposite side of premise and with the other end of second inner conductor is connected, coupling port establishes in the outside of cavity and is close to the input port sets up, coupling port with the front end of first inner conductor is connected.

Preferably, the fixed medium includes an inner conductor support block and an inner conductor support rod, the inner conductor support block wraps end portions of the first inner conductor and the second inner conductor, the inner conductor support rod is arranged in the cavity along the width direction of the cavity, and the first inner conductor and the second inner conductor are erected on the inner conductor support rod.

Preferably, the bottom of the tuning cover plate is provided with a first bump, a second bump and a third bump, the first bump, the second bump and the third bump are used for sequentially pressing the first inner conductor and the second inner conductor, and the tuning cover plate is fixed on the cavity through a plurality of screws on the peripheral side.

The invention has the beneficial effects that: the structure is simple and ingenious, compared with the conventional coupler, the function is various, the direct current coupler can work in the frequency band of 800-3700MHZ by adjusting the distance between the first inner conductor and the second inner conductor through the tuning screw, and the direct current passing capability is also realized among all radio frequency ports of the coupler.

Drawings

FIG. 1 is an overall schematic view provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a split structure provided in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a first inner conductor and a second inner conductor according to an embodiment of the present invention;

fig. 4 is a schematic bottom structure diagram of a tuning cover plate according to an embodiment of the invention.

Wherein, in the figures, the various reference numbers:

1. a cavity; 2. a tuning screw; 3. a DC port; 4. a first inner conductor; 41. a first step position; 42. a second step position; 43. a third step; 5. a second inner conductor; 6. tuning the cover plate; 61. a first bump; 62. a second bump; 63. a third bump; 7. a fixing medium; 71. an inner conductor support block; 72. an inner conductor support rod; 8. an input port; 9. a coupling port; 10. a power resistor.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. As used herein, the terms "vertical," "horizontal," "left," "right," and the like are for illustrative purposes only and do not represent the only embodiments, and as used herein, the terms "upper," "lower," "left," "right," "front," "rear," and the like are used in a positional relationship with reference to the drawings.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 4, an embodiment of the present invention provides a dc coupler, including a cavity 1, a first inner conductor 4 and a second inner conductor 5 are disposed in the cavity 1, a connector and a tuning screw 2 are disposed outside the cavity 1, the first inner conductor 4, the second inner conductor 5, and the connector form a strip line structure coupler, the first inner conductor 4 and the second inner conductor 5 are coupled through a space, fixing mediums 7 are disposed at an end and a bottom of the first inner conductor 4 and the second inner conductor 5, the tuning screw 2 is disposed outside the cavity 1, and the tuning screw 2 penetrates through the cavity 1 and abuts against an outer surface of the second inner conductor 5; the upper end of the cavity 1 is fixedly provided with a tuning cover plate 6.

In this embodiment, the rear end of the first inner conductor 4 is connected to a power resistor 10, and the power resistor 10 is disposed at the inner edge of the cavity 1.

In this specific embodiment, the first inner conductor 4 is integrally designed in a "" type, the first step 41, the second step 42 and the third step 43 are sequentially arranged along the bottom direction of the first inner conductor 4, and the distances between the first step 41, the second step 42, the third step 43 and the second inner conductor 5 are sequentially shortened to form a stepped design. When a signal is accessed, the distance between the first inner conductor 4 and the second inner conductor 5 can be correspondingly adjusted along with the adjustment of the tuning screw 2, so that the coupling processing of the signal is realized.

In this embodiment, the connector includes a dc port 3, an input port 8 and a coupling port 9, the dc port 3 is disposed outside the cavity 1 and connected to one end of the second inner conductor 5, the input port 8 is disposed on the other side of the premise and connected to the other end of the second inner conductor 5, the coupling port 9 is disposed outside the cavity 1 and disposed adjacent to the input port 8, and the coupling port 9 is connected to the front end of the first inner conductor 4. In specific operation, each port of the connector is respectively connected with a signal line, and the tuning screw 2 adjusts the first inner conductor 4 and the second inner conductor 5 according to different frequencies of the connected signals, so as to obtain corresponding frequency signals.

In this embodiment, the fixing medium 7 includes an inner conductor support block 71 and an inner conductor support rod 72, the inner conductor support block 71 is disposed to wrap the ends of the first inner conductor 4 and the second inner conductor 5, the inner conductor support rod 72 is disposed in the cavity 1 along the width direction of the cavity 1, and the first inner conductor 4 and the second inner conductor 5 are mounted on the inner conductor support rod 72.

In this embodiment, the bottom of the tuning cover plate 6 is provided with a first bump 61, a second bump 62 and a third bump 63, the first bump 61, the second bump 62 and the third bump 63 are used for sequentially pressing the first inner conductor 4 and the second inner conductor 5, and the tuning cover plate 6 is fixed on the cavity 1 through a plurality of screws on the peripheral side.

Through practical tests, the relevant performance parameters of the product are as follows:

the invention has the beneficial effects that: the structure is simple and ingenious, compared with the conventional coupler, the function is various, the distance between the first inner conductor 4 and the second inner conductor 5 is adjusted by arranging the tuning screw 2, the direct current coupler works in the frequency band of 800-3700MHZ, and the direct current passing capability is also realized among all radio frequency ports of the coupler.

The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.

Claims

1. A dc coupler, characterized by: the cavity is internally provided with a first inner conductor and a second inner conductor, the cavity is externally provided with a connector and a tuning screw rod, the cavity, the first inner conductor, the second inner conductor and the connector form a strip line structure coupler, the first inner conductor and the second inner conductor are coupled through space, fixing media are arranged at the end part and the bottom part of the first inner conductor and the second inner conductor, the tuning screw rod is arranged at the outer side of the cavity, and the tuning screw rod penetrates through the cavity and abuts against the outer surface of the second inner conductor; and a tuning cover plate is fixedly arranged at the upper end of the cavity.

2. A dc coupler according to claim 1, wherein: the rear end of the first inner conductor is connected with a power resistor, and the power resistor is arranged at the edge of the inner side of the cavity.

3. A dc coupler according to claim 2, wherein: the type design of the whole type of being of the first inner conductor is followed first inner conductor bottom direction is equipped with first step position, second step position and third step position in proper order, first step position, second step position and third step position with the interval of second inner conductor shortens in proper order.

4. A dc coupler according to claim 1, wherein: the connector includes direct current port, input port and coupling port, direct current port establishes the outside of cavity and is connected with the one end of second inner conductor, input port establishes relatively the opposite side of premise and with the other end of second inner conductor is connected, the coupling port is established in the outside of cavity and is close to the input port sets up, the coupling port with the front end of first inner conductor is connected.

5. A dc coupler according to claim 1, wherein: the fixed medium comprises an inner conductor supporting block and an inner conductor supporting rod, the inner conductor supporting block wraps the end portions of the first inner conductor and the second inner conductor, the inner conductor supporting rod is arranged in the cavity along the width direction of the cavity, and the first inner conductor and the second inner conductor are erected on the inner conductor supporting rod.

6. A DC coupler according to claim 4, wherein: the bottom of the tuning cover plate is provided with a first lug, a second lug and a third lug, the first lug, the second lug and the third lug are used for sequentially pressing the first inner conductor and the second inner conductor, and the tuning cover plate is fixed on the cavity through a plurality of screws on the peripheral side.