CN2582188Y

CN2582188Y - Array wave filter

Info

Publication number: CN2582188Y
Application number: CN 02244598
Authority: CN
Inventors: 赵以明
Original assignee: Chengdu Hongming Electronics Co Ltd
Current assignee: Chengdu Hongming Electronics Co Ltd
Priority date: 2002-11-01
Filing date: 2002-11-01
Publication date: 2003-10-22
Anticipated expiration: 2012-11-01

Abstract

The utility model relates to an array filter, which is suitable for the isolation of circuits. The utility model can be directly connected with a deflective flat cable press head, and a bending angle of 90 DEG can be directly connected to a circuit board. The basic structure is a tube type low pass filter which is composed of an inductor L and a capacitor C. The utility model is characterized in that a plurality of pi-shaped and/or C-shaped tube type low pass filters are assembled on a metallic earth plate 1, the tube type ceramic capacitor is composed of a ceramic tube 4 which is used as a medium, a coating layer of an internal electrode 7 and a coating layer of an external electrode 8, the tube type inductor is composed of a magnetic tube 6 with magnetic property, and the magnetic tube 6 is sheathed in the internal wall of the ceramic tube 4. Conductive contact pins 3 are inserted in the magnetic tube 6, the contact pins 3 are used as leading-out terminals, and the metallic earth plate 1 performs the functions of shielding, isolation and installation. The capacity range of the filter is from 10pF to 10000pF, the working voltage is from 50VDC to 100VDC, the utility model can be randomly assembled from one core to 60 cores according to the number of the cores of the earth plate, and the central distance of the contact pins adopts the standard density of 2.54 mm.

Description

Array wave filter

Technical field: the utility model relates to ceramic filter, relates in particular to Array wave filter.Be applicable to that at civil area aspects such as for example wired, wireless, fiber optic communications are widely applied; Also can be used for military domain, Array wave filter is applicable to the isolation between the circuit.

Technical background: Chinese patent application number 00801636.4, denomination of invention are " delectric filter that uses the nonlinear resonator display ", and be inequality with the utility model.

Summary of the invention

Goal of the invention: the purpose of this utility model provides a kind of total number selection arbitrarily from 2 to 60 to electromagnetic interference good wave filtering effect, tubular type low pass filter, Array wave filter easy for installation.

Technical characterictic:

Array wave filter is characterized in that, possesses: a plurality of π types and/or C type tubular type low pass filter are assembled on the metal ground plate 1, wherein:

C type tubular type low pass filter possesses:

Tubular ceramic capacitor is by forming as the earthenware 4 of medium, interior electrode 7 coatings, external electrode 8 coatings, inwall at earthenware 4 has only interior electrode 7 coatings, outer wall at earthenware 4 has external electrode 8 coatings, form a capacitor, external electrode 8 coatings contact welding and realize being electrically connected with metal ground plate 1

The contact pin 3 of conduction is inserted in the magnetic tube 6, and contact pin 3 is as leading-out terminal, and the retainer ring 5 of conduction is fixed on left and right two ends of earthenware 4 and magnetic tube 6, and retainer ring 5, contact pin 3 and interior electrode 7 are realized being electrically connected,

Outside the outer wall external electrode 8 of earthenware 4, protect the ring-like enamel paint coating 9 of magnetic tube 4 moisture free insulation in addition;

π type tubular type low pass filter possesses:

Tubular ceramic capacitor is by forming as the earthenware 4 of medium, interior electrode 7 coatings, external electrode 8 coatings, on the inwall left side of earthenware 4, two sections interior electrode 7 coatings are respectively arranged, outer wall at earthenware 4 has external electrode 8 coatings, form two capacitors, external electrode 8 coatings contact welding and realize being electrically connected with metal ground plate 1

The tubular type inductance is made up of magnetic magnetic tube 6, and magnetic tube 6 is enclosed within earthenware 4 inwalls, and magnetic tube 6 insulate,

Outside the outer wall external electrode 8 of earthenware 4, protect the ring-like enamel paint coating 9 of magnetic tube 4 moisture free insulation in addition.

Operation principle: the utility model principle is the LC low pass filter, when occurring disturbing signal in the circuit, utilizes capacitor C that signal is filtered, and utilizes inductance L to stop signal to pass through, and reaches jamproof purpose.

The advantage of the utility model Array wave filter is as follows:

1 adopts tubular type low pass filter form, and contact spacing is a standard density, compact conformation, and volume is little.Centre-to-centre spacing between contact pin adopts the standard density of 254mm, and exit is that circular contact pin is drawn.

Electromagnetic interference filter effect the best in 25MHz～1GHz;

3 easy for installation, installation cost is low, good reliability; Can directly connect with inclined to one side flat cable pressure head, 90 degree bent angles can directly be linked on the circuit board.

4 suppress the Perfected process of electronic equipment electromagnetic interference;

Be better than surface mount filter spare when 55MHz is above;

6 circuit C types or π type can be selected arbitrarily;

7 capacitance 10pF～10000pF can select arbitrarily; Operating voltage: 50VDC～100VDC

The electromagnetic interference that reaches between the 8 optimal electronic units between the circuit is isolated.

9, total number of tubular type low pass filter is selected arbitrarily from 2 to 60.

Description of drawings:

Fig. 1: the structure chart of C type tubular type low pass filter in the Array wave filter of the present utility model.

Fig. 2: the structure chart of π type tubular type low pass filter in the Array wave filter of the present utility model.

Fig. 3: Array wave filter schematic top plan view of the present utility model.

Fig. 4: Array wave filter schematic side view of the present utility model.

Fig. 5: C type tubular type low pass filter equivalent circuit diagram.

Fig. 6: π type tubular type low pass filter equivalent circuit diagram.

Embodiment 1:

See Fig. 1: the Array wave filter structure chart of forming by C type tubular type low pass filter of the present utility model.Wherein, top is the axial cutaway view of a C type tubular type low pass filter, and the bottom is the outline drawing of a C type tubular type low pass filter, contact pin 3 is electrically connected with retainer ring 5, retainer ring 5 is electrically connected with interior electrode 7, and ground plate 1 is electrically connected with external electrode 8, and interior electrode 7 external electrodes 8 form a capacitor.See Fig. 5: C type tubular type low pass filter equivalent circuit diagram is a capacitor C on it.

Embodiment 2:

See Fig. 2: the Array wave filter structure chart of forming by π type tubular type low pass filter of the present utility model.Wherein, top is the axial cutaway view of a π type tubular type low pass filter, the bottom is the outline drawing of a π type tubular type low pass filter, and contact pin 3 is electrically connected with retainer ring 5, and retainer ring 5 is electrically connected with interior electrode 7, ground plate 1 is electrically connected with external electrode 8, magnetic magnetic tube 6 all insulate with contact pin 3, retainer ring 5, interior electrode 7, and inductance of magnetic tube 6 formation is two at the interior electrode 7 of the inwall of earthenware 4, therefore, two interior electrodes 7 form two capacitors with external electrode 8.See Fig. 6: π type tubular type low pass filter equivalent circuit diagram, two capacitor C1 and C2 are arranged on it, an inductance L is arranged.

See Fig. 3, Array wave filter vertical view of the present utility model.On its ground plate 1 installing hole 2 is arranged, the centre-to-centre spacing between contact pin adopts the standard density of 254mm, and exit is that circular contact pin is drawn.

Described Array wave filter is characterized in that: total number of tubular type low pass filter is selected arbitrarily from 2 to 60.

Described Array wave filter is characterized in that: the π type and/or the C type tubular type low pass filter of similar frequency bands are assembled on the ground plate 1; Or the π type and/or the C type tubular type low pass filter of different frequency range be assembled on the ground plate 1.

Claims

1, Array wave filter is characterized in that, possesses: a plurality of π types and/or C type tubular type low pass filter are assembled on the metal ground plate (1), wherein:

C type tubular type low pass filter possesses:

Tubular ceramic capacitor is by forming as the earthenware (4) of medium, interior electrode (7) coating, external electrode (8) coating, inwall at earthenware (4) has only an interior electrode (7) coating, outer wall at earthenware (4) has an external electrode (8) coating, form a capacitor, external electrode (8) coating contacts welding and realizes being electrically connected with metal ground plate (1)

The contact pin (3) of conduction is inserted in the magnetic tube (6), and contact pin (3) is as leading-out terminal, and the retainer ring of conduction (5) is fixed on left and right two ends of earthenware (4) and magnetic tube (6), and retainer ring (5), contact pin (3) and interior electrode (7) are realized being electrically connected,

Outside the outer wall external electrode (8) of earthenware (4), protect the ring-like enamel paint coating (9) of the moisture free insulation of magnetic tube (4) in addition;

π type tubular type low pass filter possesses:

Tubular ceramic capacitor is by forming as the earthenware (4) of medium, interior electrode (7) coating, external electrode (8) coating, on the inwall left side of earthenware (4), two sections an interior electrode (7) coating is respectively arranged, outer wall at earthenware (4) has an external electrode (8) coating, form two capacitors, external electrode (8) coating contacts welding and realizes being electrically connected with metal ground plate (1)

The tubular type inductance is made up of magnetic magnetic tube (6), and magnetic tube (6) is enclosed within earthenware (4) inwall, and magnetic tube (6) insulate,

Outside the outer wall external electrode (8) of earthenware (4), protect the ring-like enamel paint coating (9) of the moisture free insulation of magnetic tube (4) in addition.

2, Array wave filter according to claim 1 is characterized in that: total number of tubular type low pass filter is selected arbitrarily from 2 to 60.

3, Array wave filter according to claim 2 is characterized in that: the π type and/or the C type tubular type low pass filter of similar frequency bands are assembled on the ground plate (1); Or the π type and/or the C type tubular type low pass filter of different frequency range be assembled on the ground plate (1).