CN201340899Y

CN201340899Y - 200MHz embedded type circulator

Info

Publication number: CN201340899Y
Application number: CNU2008202379440U
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 200MHz embedded type circulator is in a whole embedded structure, wherein a center conductor comprises a matching network composed of a non-reciprocal junction, a distributed inductance and a distributed capacitance in series connection, wherein the matching network is arranged between a non-reciprocal junction impedance and an external ohm impedance, and the non-reciprocal junction is integrated with the matching network. The utility model provides an integrated center conductor adopting the mode of the disc type non-reciprocal junction matching with the distributed inductance and the distributed capacitance, aiming to the weaknesses of a lumped-parameter circulator, and adopts an integrated embedded type mode on the whole structural design, and three leads of the center conductor are lead out of a cavity. The utility model has the characteristics of excellent magnetic circuit closure, small magnet leakage, high reliability, excellent whole electric performance of components and easy batch production owing to taking measures of the integrated center conductor, the integrated cavity, single surface silver plating of ferrites and the like, and can be widely applied in a metric wave communication and radar integrated systems.

Description

The embedded circulator of 200MHz

Technical field

The utility model is a kind of circulator, is applied to the metric wave frequency range, mainly is used in the radar complete machine transmit-receive sharing system, plays effects such as belt and protection, belongs to the microwave ferrite nonreciprocal device, is the embedded circulator of a kind of 200MHz.

Background technology

The circulator design of traditional 200MHz all is to adopt the lumped parameter mode to design basically, be because the relatively morning that lumped-parameter circulator is studied at home on the one hand, comparing that its structural volume can be done in addition is less, the center conductor of circulator is by 3 inductance bars 11 that are mutually 120 degree, add ferrite 12 and the lumped parameter capacitor and inductor mates formation, its structure as shown in Figure 1, this structure uses adhesive and screw on cavity by the polylith permeability magnetic material, constitute magnetic loop with cavity, though some embedded circulators improved in being connected of permeability magnetic material and cavity, but on product electrical property angle, still there is defective in this lumped-parameter circulator: 1) the inside configuration inductance capacitance all is manual welding, and relative reliability is weaker; 2) anti-difference power; 3) the non-constant of second harmonic rejection ratio, particularly in radar system, the reliability of device and electrical performance indexes must be considered by emphasis, the circulator processing consumptive material of this kind structure is big, magnetic circuit efficient is low, device overall performance electrical performance index and temperature performance are relatively poor, and second harmonic can't reach higher instructions for use.

Summary of the invention

Problem to be solved in the utility model is: existing circulator reliability, anti-power, second harmonic suppress ratio, can not satisfy the user demand of high request, need the circulator of a kind of reliability height, good electrical property.

The technical solution of the utility model is: the embedded circulator of 200MHz, comprise cavity, the permanent magnet of two surface metalations, two even magnetic sheets, two microwave ferrites, center conductor, adjustment sheet, the temperature-compensating sheet, cover plate, integral body is damascene structures, center conductor comprises nonreciprocal knot, distributed inductance and distributed capacitor, distributed inductance and distributed capacitor are composed in series matching network, and matching network is arranged between nonreciprocal knot impedance and the external ohmage, and nonreciprocal knot and matching network are integrated.

The utility model microwave ferrite single face is silver-plated.The integrated magnetic conduction cavity of cavity, microwave ferrite is the gyromagnet ferrogarnet, the nonreciprocal nonreciprocal knot of disc of becoming of center conductor.The electroplate of cavity, center conductor, even magnetic sheet.

The utility model is at the shortcoming of lumped-parameter circulator, a kind of new design that proposes, do not adopt the center conductor that constitutes with lumped parameter inductance bar, the substitute is the nonreciprocal knot of disc, add the mode of distributed inductance and distributed capacitor coupling, a kind of incorporate center conductor that constitutes adopts incorporate embedded mode simultaneously on overall construction design, 3 lead-in wires of center conductor are introduced to outside the cavity.The utility model has been owing to adopted incorporate center conductor and incorporate cavity, and the ferrite single face is silver-plated to wait measure, and it is good to have the magnetic circuit closure, leakage field is little, the reliability height, and the device overall performance electrical performance is good, be easy to characteristics such as batch process, can be widely used in metric wave communication and the radar machine system.

Description of drawings

Fig. 1 is the center conductor schematic diagram of existing lumped parameter mode.

Fig. 2 is the utility model damascene structures schematic diagram.

Fig. 3 is the utility model center conductor structure chart.

Fig. 4 is the matching network structural representation of the utility model center conductor.

Embodiment

As shown in Figure 2, the utility model comprises cavity 21, the permanent magnet 22 of two surface metalations, two even magnetic sheets 23, two microwave ferrites 24, center conductor 25, adjustment sheet 26, temperature-compensating sheet 27, cover plate 28, integral body is damascene structures, three lead-in wires of center conductor 25 are introduced to outside the cavity 21, center conductor 25 both sides set gradually microwave ferrite 24, even magnetic sheet 23, permanent magnet 22, set gradually two adjustment sheets 26 and four temperature-compensating sheets 27 between the permanent magnet 22 of close cover plate 28 and the cover plate 28.

The structure of center conductor 25 as shown in Figure 3, comprise nonreciprocal knot 31, distributed inductance and distributed capacitor, nonreciprocal knot 31 adopts disc, distributed inductance and distributed capacitor are composed in series matching network 32, as Fig. 4, matching network 32 is arranged between the impedance and external ohmage of nonreciprocal knot 31, and nonreciprocal knot 31, matching network 32 are integrated.Matching network 32 is with reference to accurate lumped parameter principle design data, concrete inductance capacitance can carry out Design Theory by documents and materials and adjust by experiment then, the matching network of being made up of the electric capacity and the inductance of distributed constant replaces the matching way of capacitor and inductor of the lumped parameter of lumped-parameter circulator, its advantage just is that volume is little, the reliability height.An embodiment of the present utility model, overall dimension is 45*45.5*15.7mm, ferrite φ 41.5*1.5, center conductor adopts the beryllium-bronze material of 0.13mm, in the ferrite zone, with width 2.5mm length is the band line realization inductive part of 10.2mm, realizes capacitive part with about 63 square millimeters area, constitutes matching network.

The utility model microwave ferrite 24 single faces are silver-plated, cavity 21 integrated cavitys, and cavity 21 passes through screw threads for fastening with cover plate 28, and cavity 21 is the magnetic conduction cavity, and microwave ferrite 24 is by the gyromagnet ferrogarnet.In order further to reduce the forward loss of device, can be silver-plated on the surface of cavity 21, center conductor 25, even magnetic sheet 23.

Claims

1, the embedded circulator of 200MHz, comprise cavity (21), the permanent magnet of two surface metalations (22), two even magnetic sheets (23), two microwave ferrites (24), center conductor (25), adjustment sheet (26), temperature-compensating sheet (27), cover plate (28), integral body is damascene structures, it is characterized in that center conductor (25) comprises nonreciprocal knot (31), distributed inductance and distributed capacitor, distributed inductance and distributed capacitor are composed in series matching network (32), and matching network (32) is arranged between (31) impedance of nonreciprocal knot and the external ohmage, and nonreciprocal knot (31) and matching network (32) are integrated.

2, the embedded circulator of 200MHz according to claim 1 is characterized in that microwave ferrite (24) single face is silver-plated.

3, the embedded circulator of 200MHz according to claim 1 and 2 is characterized in that the integrated magnetic conduction cavity of cavity (21), and microwave ferrite (24) is the gyromagnet ferrogarnet, the nonreciprocal nonreciprocal knot of disc of becoming of center conductor (25).

4, the embedded circulator of 200MHz according to claim 1 and 2 is characterized in that the electroplate of cavity (21), center conductor (25), even magnetic sheet (23).

5, the embedded circulator of 200MHz according to claim 3 is characterized in that the electroplate of cavity (21), center conductor (25), even magnetic sheet (23).