CN2701089Y - Small-sized four-frequency combining filter - Google Patents
Small-sized four-frequency combining filter Download PDFInfo
- Publication number
- CN2701089Y CN2701089Y CN 200420026694 CN200420026694U CN2701089Y CN 2701089 Y CN2701089 Y CN 2701089Y CN 200420026694 CN200420026694 CN 200420026694 CN 200420026694 U CN200420026694 U CN 200420026694U CN 2701089 Y CN2701089 Y CN 2701089Y
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- main body
- small
- sized
- combining filter
- frequency combining
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Abstract
The utility model discloses a small-sized four-frequency combining filter, comprising a rectangular main body, a covering plate, an inner conductor, the adjusting screw of resonance frequency, an input interface and an output interface. The main body is provided with four groups of cavity resonators, and each group corresponds to a frequency range. The small-sized four-frequency combining filter is characterized in that the main body is provided with four coordinate rectangular chambers which correspond to the cavity resonator groups, and the rectangular chamber is provided with groups of cavity resonators which are coupled in manner of distribution; the inner conductor of the small-sized four-frequency combining filter is fixed on a pair of parallel surfaces of the main body, and the adjusting screw for the resonance frequency of the small-sized four-frequency combining filter is fixed on the other pair of parallel surfaces of the main body. The small-sized four-frequency combining filter has novel structure, compactness, small volume, simple processing process, high production efficiency and low production cost; the main body which is provided with four coordinate rectangular chambers can conduct batch manufacturing with the method of section-bar extrusion processing, the small-sized four-frequency combining filter saves raw materials and is easy to conduct mass production, and thus the small-sized four-frequency combining filter adapts to the request for the instant development of the communication technology.
Description
Technical field
The utility model relates to the microwave filter of using in a kind of wireless communication field, and particularly a kind of multiplex (MUX) closes path filter.
Background technology
The multiplex (MUX) closes path filter and is applied to the shared sky/feeder system of a plurality of systems of microwave communication different frequency range.A kind of four frequency combiners are arranged at present, its structure as shown in Figure 1, its composition comprises main body (outer conductor) 1, cover plate 6, inner wire 4, resonance frequency adjustment screw 5, the input/output interface 3 of rectangle, the resonant cavity that has the four groups of centralized couplings in back-to-back two sides in its main body (outer conductor) 1, the respectively corresponding frequency range of each group resonant cavity.2 are outer conductor between the chamber that has coupling window among the figure.Its resonant cavity group is that rotary-cut processes on the upper and lower end face of a bulk metal piece.Require little, the compact conformation of this four frequency combiner volumes as a rule.It exists, and major defect has two: 1, the processing technology complexity, is difficult to accomplish miniaturization; 2, high material consumption, production efficiency is low, and the production cost height is difficult to produce in enormous quantities, can not adapt to the requirement of communication technology fast development.
Summary of the invention
Technical problem to be solved in the utility model is, overcomes the shortcoming of prior art, provides small-sized four of a kind of compact conformation to close path filter frequently.
The technical scheme that its technical problem that solves the utility model adopts is as follows: a kind of small-sized four close path filter frequently, its composition comprises the main body of rectangle, cover plate, inner wire, the resonance frequency adjustment screw, input/output interface, have four groups of resonant cavitys in its main body, every group of respectively corresponding frequency range, it is characterized in that having four the arranged side by side rectangular cavity corresponding in the main body with the resonant cavity group, the chamber that shakes of wiping that has in groups distributed couplings in the rectangular cavity, its inner wire is fixed on the pair of parallel face of main body, its resonance frequency adjustment screw be fixed on main body another on the parallel surface.
Manufacturing process of the present utility model comprises the steps:
1, according to the corresponding main body mould of Design of Filter parameter manufacturing,
2, squeeze out main body section bar by the large-size extruder heating with four rectangular cavity arranged side by side,
3, according to filter Len req size cutting section bar, make main body,
4, assembling inner wire, resonance frequency adjustment screw and input/output interface device,
5, assembling two end cover plate, so far, the manufacturing of the utility model filter product finishes.
The beneficial effects of the utility model are as follows: novel structure, compactness, volume are little, four groups of cavity lengths equate, sectional area can equate also can be unequal, can produce in batches by the method for section bar extrusion process, processing technology is simple, saves raw material, the production efficiency height, production cost is low, is easy to produce in enormous quantities, adapts to the requirement of communication technology fast development.
Description of drawings
Fig. 1 closes path filter internal structure vertical view frequently for four of prior art.
Fig. 2 is Fig. 1 filter internal structure front view.
Fig. 3 closes path filter profile schematic diagram frequently for the utility model small-sized four.
Fig. 4 removes the internal structure right view of right cover plate for Fig. 3.
Embodiment
With reference to the accompanying drawings and in conjunction with the embodiments the utility model is described in detail.But the utility model is not limited to given embodiment.
As shown in Figure 3 and Figure 4, the composition that the utility model small-sized four closes path filter frequently comprises main body (outer conductor) 1, cover plate 6, inner wire 4, resonance frequency adjustment screw 5, the input/output interface device 3 of rectangle, have four groups of resonant cavitys in its main body 1, every group of respectively corresponding frequency range, it is characterized in that having four the arranged side by side rectangular cavity corresponding in the main body 1 with the resonant cavity group, the chamber that shakes of wiping that has in groups distributed couplings in the rectangular cavity, its inner wire 4 is fixed on the pair of parallel face of main body, its resonance frequency adjustment screw 5 be fixed on main body another on the parallel surface.
In embodiment as shown in Figure 3 and Figure 4, in order to increase the capacitance adjustment amount, further feature is to have on the inner wire 4 and resonance frequency adjustment screw 3 corresponding groove 41.
Embodiment 1 closes path filter (Personal Handyphone System communication system) frequently for PCS four, four rectangular cavity sectional areas are respectively 22mm*63mm, 22mm*65mm, 22mm*31mm, 22mm*29mm, difference corresponding 900MHz, 800MHz, 1900MHz, 2100MHz, size of main body is 60mm*108mm*110mm.
Claims (2)
1, small-sized four closes path filter frequently, its composition comprises main body, cover plate, inner wire, resonance frequency adjustment screw, the input/output interface of rectangle, have four groups of resonant cavitys in its main body, every group of respectively corresponding frequency range, it is characterized in that having four the arranged side by side rectangular cavity corresponding in the main body with the resonant cavity group, the chamber that shakes of wiping that has in groups distributed couplings in the rectangular cavity, its inner wire is fixed on the pair of parallel face of main body, its resonance frequency adjustment screw be fixed on main body another on the parallel surface.
2, according to claim 1 small-sized four frequently close path filter, it is characterized in that having on the inner wire and resonance frequency adjustment screw corresponding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420026694 CN2701089Y (en) | 2004-04-28 | 2004-04-28 | Small-sized four-frequency combining filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420026694 CN2701089Y (en) | 2004-04-28 | 2004-04-28 | Small-sized four-frequency combining filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2701089Y true CN2701089Y (en) | 2005-05-18 |
Family
ID=34771357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420026694 Expired - Lifetime CN2701089Y (en) | 2004-04-28 | 2004-04-28 | Small-sized four-frequency combining filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2701089Y (en) |
-
2004
- 2004-04-28 CN CN 200420026694 patent/CN2701089Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140428 Granted publication date: 20050518 |