CN106299567A - A kind of combined type circulator - Google Patents

Abstract

The invention discloses a kind of combined type circulator, it includes copper coin (1), dielectric layer (2) and polytetrafluoroethylene floor (3), it is positioned between the circuit layer (4) of upper surface and copper coin (1) and is provided with PP layer A(8), it is positioned between the circuit layer (4) of lower surface and polytetrafluoroethylene floor (3) and is provided with PP layer B(9), it is additionally provided with in combined type circulator and runs through polytetrafluoroethylene floor (3), PP layer B(9), dielectric layer (2) and PP layer A(8) ground hole (13), PP layer and the contact position of circuit layer (4), copper coin (1) and PP layer A(8) contact position, polytetrafluoroethylene floor (3) and PP layer B(9) contact position be provided with tack coat (14).The invention has the beneficial effects as follows: greatly reduce small product size, can be integrated in a substrate with reciprocity transmission apparatus, improve electrical property and reliability, there is higher integrated level, prevent electromagnetic wave from harassing.

Description

A composite circulator

technical field

The invention relates to the technical field of circulator structure, in particular to a composite circulator.

Background technique

Microwave ferrite devices, such as circulators and isolators, solve a series of practical problems such as inter-stage isolation, impedance and antenna sharing of radars, greatly improve the tactical performance of radar systems, and become one of the key components. With the expansion of the application field, the amount of various devices has also increased significantly, and gradually play a special role in various electronic equipment such as satellite communication, microwave communication, microwave energy application, medical treatment, and microwave measurement technology, and the market is expanding day by day. Ferrite microwave devices are designed using the non-reciprocal propagation effect of microwaves in ferrite media. Known reciprocal transmission devices, such as filters, inductors, capacitors, etc., are integrated in the circuit substrate, but the circulator cannot be integrated inside the substrate, so the circulator is usually installed outside the circuit substrate, resulting in an increase in the size of the module, and it is easy to Electromagnetic interference occurs.

Contents of the invention

The purpose of the present invention is to overcome the shortcomings of the prior art, to provide a product that greatly reduces the volume, can be integrated with a reciprocal transmission device in a substrate, improves electrical performance and reliability, has a high degree of integration, and prevents Compound circulator for electromagnetic wave interference.

The object of the present invention is achieved through the following technical solutions: a composite circulator, which includes a copper plate, a dielectric layer and a polytetrafluoroethylene layer, the upper and lower surfaces of the dielectric layer are all laid with a circuit layer, and the circuit layer consists of a branch line I. Composed of branch line II and branch line III, the three branch lines intersect at one point and the three branch lines are symmetrically distributed at 120° to each other. There is a PP layer A between the circuit layer and the copper plate on the upper surface, and the one on the lower surface A PP layer B is arranged between the circuit layer and the polytetrafluoroethylene layer, through holes are arranged on the PP layer A and the PP layer B, and a rotating magnet is arranged in the through holes, and a magnet is arranged on the top of the copper plate. The composite circulator is also provided with a grounding hole through the polytetrafluoroethylene layer, PP layer B, dielectric layer and PP layer A, the contact between the PP layer and the circuit layer, the contact between the copper plate and the PP layer A 1. A bonding layer is provided at the contact between the polytetrafluoroethylene layer and the PP layer B.

The magnets are permanent magnets.

The dielectric layer is a polytetrafluoroethylene layer.

The present invention has the following advantages: (1) The circuit layer constituting the circulator is composed of three branch lines. During the etching process, the circuit layer can also produce reciprocal transmission devices such as filters, inductors, and capacitors at the same time, so that the circulator and Reciprocity transmission devices are integrated to form a microwave transmission substrate, without the need to install an external circulator, which greatly reduces the product volume and improves product quality. (2) The composite circulator is also provided with a grounding hole penetrating through the polytetrafluoroethylene layer, PP layer B, dielectric layer and PP layer A, and the grounding hole forms a shielding cavity to prevent electromagnetic wave interference. (3) The composite circulator is composed of multiple components, so the overall thickness is smaller and more integrated than the original circulator.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is a schematic structural diagram of a dielectric layer compounded with a circuit layer;

Fig. 3 is the structural representation of PP layer A;

In the figure, 1-copper plate, 2-dielectric layer, 3-polytetrafluoroethylene layer, 4-circuit layer, 5-branch line I, 6-branch line II, 7-branch line III, 8-PP layer A, 9 - PP layer B, 10 - through hole, 11 - spin magnet, 12 - magnet, 13 - ground hole, 14 - bonding layer.

detailed description

The present invention will be further described below in conjunction with accompanying drawing, protection scope of the present invention is not limited to the following:

As shown in Figures 1 to 3, a composite circulator includes a copper plate 1, a dielectric layer 2 and a polytetrafluoroethylene layer 3, and a circuit layer 4 is laid on the upper and lower surfaces of the dielectric layer 2, and the circuit layer 4 It is composed of branch line I5, branch line II6 and branch line III7. The three branch lines meet at one point and the three branch lines are symmetrically distributed at 120°. A PP layer A8 is arranged between the circuit layer 4 and the copper plate 1 on the upper surface. A PP layer B9 is arranged between the circuit layer 4 and the polytetrafluoroethylene layer 3 on the lower surface, and a through hole 10 is arranged on the PP layer A8 and the PP layer B9, and a rotating magnet 11 is arranged in the through hole 10, thereby limiting The movement of the rotatable magnet 11 is ensured so that the rotatable magnet 11 is firmly fixed. The top of the copper plate 1 is provided with a magnet 12, and the composite circulator is also provided with a grounding hole 13 penetrating through the polytetrafluoroethylene layer 3, PP layer B9, dielectric layer 2 and PP layer A8 to prevent electromagnetic wave interference , Applicable to radar, missile, navigation, remote control telemetry, satellite communication, microwave relay communication, mobile relay communication, radio system and other fields. A bonding layer 14 is provided at the contact between the PP layer and the circuit layer 4 , the contact between the copper plate 1 and the PP layer A8 , and the contact between the polytetrafluoroethylene layer 3 and the PP layer B9 .

The magnet 12 is a permanent magnet, and the magnet 12 has the function of magnetic conduction; the dielectric layer 2 is a polytetrafluoroethylene layer 3 .

The working process of the present invention is as follows: magnet 12 magnetizes gyromagnet 11, and gyromagnet 11 produces magnetic deflection, when inputting electromagnetic wave in branch line I5, electromagnetic wave is output from branch line II6, and there is no electromagnetic wave output in branch line III7; When the electromagnetic wave is input into the branch line II6, the electromagnetic wave is output from the branch line III7, but there is no electromagnetic wave in the branch line I5, so a one-way circular circulation is formed, and the reverse direction cannot flow, so this composite circulator is suitable for the integrated circuit market superior. Since the circuit layer 4 is obtained by etching the PCB board, reciprocal transmission devices such as filters, inductors, and capacitors can also be produced at the same time during the etching process, and the circulator and the reciprocal transmission device are integrated to form a microwave transmission substrate. There is no need to install a circulator externally, which greatly reduces the product volume, improves product quality, and has a high degree of integration.

The above descriptions are only preferred embodiments of the present invention, and it should be understood that the present invention is not limited to the forms disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and Modifications can be made within the scope of the ideas described herein, by virtue of the above teachings or skill or knowledge in the relevant art. However, changes and changes made by those skilled in the art do not depart from the spirit and scope of the present invention, and should all be within the protection scope of the appended claims of the present invention.

Claims (3)

1. A composite circulator, characterized in that it includes a copper plate (1), a dielectric layer (2) and a polytetrafluoroethylene layer (3), and circuits are laid on the upper and lower surfaces of the dielectric layer (2) Layer (4), circuit layer (4) is composed of branch line I (5), branch line II (6) and branch line III (7), the three branch lines meet at one point and the three branch lines are 120° symmetrical to each other distribution, a PP layer A (8) is set between the circuit layer (4) on the upper surface and the copper plate (1), and a PP layer is set between the circuit layer (4) on the lower surface and the polytetrafluoroethylene layer (3). Layer B (9), PP layer A (8) and PP layer B (9) are all provided with a through hole (10), and a rotating magnet (11) is arranged in the through hole (10), and the copper plate (1) A magnet (12) is set on the top of the composite circulator, and the composite circulator is also equipped with a PTFE layer (3), PP layer B (9), dielectric layer (2) and PP layer A (8). The ground hole (13), the contact between the PP layer and the circuit layer (4), the contact between the copper plate (1) and the PP layer A (8), the polytetrafluoroethylene layer (3) and the PP layer B (9 ) are provided with an adhesive layer (14) at the contact points. 2. A composite circulator according to claim 1, characterized in that: said magnet (12) is a permanent magnet. 3. A composite circulator according to claim 1, characterized in that: the dielectric layer (2) is a polytetrafluoroethylene layer (3).