CN201340898Y

CN201340898Y - TD-SCDMA surface mounted circulator

Info

Publication number: CN201340898Y
Application number: CNU2008202379436U
Authority: CN
Inventors: 郑建春
Original assignee: NANJING TOPBAND MICROELECTRONIC CO Ltd
Current assignee: NANJING TOPBAND MICROELECTRONIC CO Ltd
Priority date: 2008-12-31
Filing date: 2008-12-31
Publication date: 2009-11-04
Anticipated expiration: 2018-12-31

Abstract

A TD-SCDMA surface mounted circulator comprises a permanent magnet, a temperature compensating gauge, two ferrites, a center conductor and a magnetic conduction cover plate, and further comprises an integrated magnetic conduction cavity, two even magnetic sheets and a phase adjustment sheet. The utility model relates to an embedded surface mounted circulator, and has the characteristics of favorable magnetic circuit closure, small magnet leakage, assembly without bonding agent and screws, improved production efficiency, reduced cost, high reliability and excellent whole performance of components owing to taking measures of the integrated structure of the cavity, upper surface and lower surface magnetizations of the ferrites and the surface silver plating of components, and has simple structure, small volume and easy installation and debugging, and can widely applied in microwave communications, especially used in a 3G communication system.

Description

TD-SCDMA Surface Mount circulator

Technical field

The utility model relates to a kind of circulator, duplexer or the multiplexer that uses in the travelling carriages such as the base station of particularly a kind of TD-SCDMA system and mobile phone and plaing isolated or the embedded Surface Mount circulator of effect such as decoupling, belong to the microwave ferrite nonreciprocal device, be TD-SCDMA Surface Mount circulator.

Background technology

The existing split mounting type circulator that is used for mobile communcations system, be provided with the shell of cavity with the discrete bonding one-tenth of several permeability magnetic materials, its structure as shown in Figure 1, permeability magnetic material 11 usefulness adhesives are glued on the cavity 15, two ferrites 12 of in cavity 15, packing into, center conductor 13, magnetic conduction disk 14, temperature-compensating sheet 17, permanent magnet 16, permeability magnetic material 11 is screwed respectively on cavity, ferrite is generally the artificial visually examine and determines the installation site, and consuming time and accurate inadequately, permanent magnet provides bias magnetic field for ferrite, center conductor has three to draw end points, is introduced to respectively outside three ports of cavity.This structure uses adhesive and screw on cavity by polylith permeability magnetic material permeability magnetic material permeability magnetic material, constitutes magnetic loop with cavity.This structure processing consumptive material is big, and magnetic circuit is not exclusively closed, and leakage field is bigger, and magnetic circuit efficient is low, and device bulk temperature poor-performing when taking a lot of work, increases cost.

Summary of the invention

Problem to be solved in the utility model is: it is big that the existing circulator that is used for mobile communcations system is processed consumptive material, and magnetic circuit efficient is low, device bulk temperature poor-performing, and when taking a lot of work, the cost height.

The technical solution of the utility model is: TD-SCDMA Surface Mount circulator, comprise permanent magnet, the temperature-compensating sheet, two ferrites, center conductor and magnetic conduction cover plate, also comprise incorporate magnetic conduction cavity, two blocks of even magnetic sheets and phase adjusted sheet, permanent magnet, two blocks of even magnetic sheets, the temperature-compensating sheet, two ferrites, center conductor, the phase adjusted sheet piles up and is arranged between magnetic conduction cavity and the magnetic conduction cover plate, magnetic conduction cavity and magnetic conduction cover plate constitute the cavity of sealing, the center conductor both sides set gradually ferrite, the temperature-compensating sheet, even magnetic sheet, permanent magnet, the phase adjusted sheet is located near between the permanent magnet and magnetic conduction cover plate of magnetic conduction cover plate, two ferrites are equipped with dielectric ring respectively, and ferrite closely is fixed in the dielectric ring.

Three lead-in wires of the utility model center conductor are drawn the magnetic conduction cavity, and the output of lead-in wire is concordant with magnetic conduction cavity bottom surface, the convenient installation.Existing circulator is because the structure during the production moulding, bad realization stoops lead-in wire and welds in assembling process, but to be embedded in circulator on the substrate, allow the lead-in wire smooth being connected of output with circuit, the utility model is just carried out processing to the lead-in wire of center conductor when circulator is made, the output of lead-in wire is concordant with magnetic conduction cavity bottom surface, for the user, do not need substrate is just processed and can directly weld, the convenience that saves time is installed, can select wave soldering.

The utility model ferrite is a gyromagnetic ferrite, and dielectric ring is the PTFE medium ring, in order further to reduce the insertion loss of device, the electroplate of magnetic conduction cavity, center conductor, even magnetic sheet and temperature-compensating sheet.

The utility model adopts homemade microwave ferrite, by the fixing ferrite of PTFE medium ring, when helping ferrite to install in cavity, dielectric ring accurately locatees, the fixedly position of ferrite in cavity, back is installed simultaneously, polytetrafluoroethylene has good electric property, and be easy to processing, the internal diameter of dielectric ring and ferritic external diameter are accurately fitted.

Embedded Surface Mount circulator of the present utility model is owing to adopted the measures such as two-sided magnetization and device surface be silver-plated up and down of cavity integral structure, ferrite, it is good to have the magnetic circuit closure, leakage field is little, need not adhesive and screw can assemble, and enhances productivity, and reduces cost, the reliability height, characteristics such as the device overall performance is good, and simple in structure, volume is little, be easy to Installation and Debugging, can be widely used in microwave communication particularly in the 3G communication system.

Description of drawings

Fig. 1 is the decomposition texture schematic diagram of existing split mounting type circulator.

Fig. 2 is a decomposition texture schematic diagram of the present utility model.

Fig. 3 is a contour structures schematic diagram of the present utility model.

Fig. 4 is a ferrite dielectric ring installation diagram of the present utility model.

Embodiment

As Fig. 2, the utility model comprises incorporate magnetic conduction cavity 21, permanent magnet 22, two blocks of even magnetic sheets 23, temperature-compensating sheet 24, two ferrites 25, center conductor 26, phase adjusted sheet 27 and magnetic conduction cover plate 29, permanent magnet 22, two blocks of even magnetic sheets 23, temperature-compensating sheet 24, two ferrites 25, center conductor 26 and phase adjusted sheet 27 pile up and are arranged between magnetic conduction cavity 21 and the magnetic conduction cover plate 29, magnetic conduction cavity 21 constitutes the cavity that seals with magnetic conduction cover plate 29, both compress by screw thread, center conductor 26 both sides set gradually ferrite 25, temperature-compensating sheet 24, even magnetic sheet 23, permanent magnet 22, phase adjusted sheet 27 is located near 29 of the permanent magnet 22 of magnetic conduction cover plate 29 and magnetic conduction cover plates, two ferrites 25 are equipped with dielectric ring 30 respectively, and ferrite 25 closely is fixed in the dielectric ring 30.

As Fig. 3, three lead-in wires 28 of center conductor 26 are drawn magnetic conduction cavity 21, the output of lead-in wire 28 is concordant with magnetic conduction cavity 21 bottom surfaces, when therefore the user installs the utility model on substrate, need not substrate is handled so that circulator is embedded substrate, directly the utility model is placed on the substrate welding and gets final product.

The utility model ferrite 25 is a gyromagnetic ferrite, dielectric ring 30 is the PTFE medium ring, as Fig. 4, when can helping ferrite 25 to install in cavity 21, dielectric ring 30 accurately locatees, the fixedly position of ferrite 25 in cavity 21, back is installed simultaneously, because the internal diameter of dielectric ring and gyromagnetic ferrite disk external diameter tolerance fit precision must be high, if the dielectric ring internal diameter is little, the ferrite external diameter is big, the ferrite embedding is not advanced in the dielectric ring; Otherwise, form the gap between the two and influence the circulator electrical property, so the utility model to select the PTFE medium ring for use, polytetrafluoroethylene has good electric property, and is easy to processing, and the internal diameter of dielectric ring and ferritic external diameter are accurately fitted.

In order further to reduce the insertion loss of device, the electroplate of magnetic conduction cavity 21, center conductor 26, even magnetic sheet 23 and temperature-compensating sheet 24.

Claims

1, TD-SCDMA Surface Mount circulator, comprise permanent magnet (22), temperature-compensating sheet (24), two ferrites (25), center conductor (26) and magnetic conduction cover plate (29), it is characterized in that also comprising incorporate magnetic conduction cavity (21), two blocks of even magnetic sheets (23) and phase adjusted sheet (27), permanent magnet (22), two blocks of even magnetic sheets (23), temperature-compensating sheet (24), two ferrites (25), center conductor (26), phase adjusted sheet (27) piles up and is arranged between magnetic conduction cavity (21) and the magnetic conduction cover plate (29), magnetic conduction cavity (21) constitutes the cavity that seals with magnetic conduction cover plate (29), center conductor (26) both sides set gradually ferrite (25), temperature-compensating sheet (24), even magnetic sheet (23), permanent magnet (22), phase adjusted sheet (27) is located near between the permanent magnet (22) and magnetic conduction cover plate (29) of magnetic conduction cover plate (29), two ferrites (25) are equipped with dielectric ring (30) respectively, and ferrite (25) closely is fixed in the dielectric ring (30).

2, TD-SCDMA Surface Mount circulator according to claim 1 is characterized in that three lead-in wires (28) of center conductor (26) are drawn magnetic conduction cavity (21), and the output of lead-in wire (28) is concordant with magnetic conduction cavity (21) bottom surface.

3, TD-SCDMA Surface Mount circulator according to claim 1 and 2, it is characterized in that ferrite (25) is a gyromagnetic ferrite, dielectric ring (30) is the PTFE medium ring, the electroplate of magnetic conduction cavity (21), center conductor (26), even magnetic sheet and temperature-compensating sheet (24).