CN206461070U

CN206461070U - A kind of comb line filter

Info

Publication number: CN206461070U
Application number: CN201720143600.2U
Authority: CN
Inventors: 王旭
Original assignee: Rosenberger Technology Kunshan Co Ltd
Current assignee: Prologis Communication Technology Suzhou Co Ltd
Priority date: 2017-02-17
Filing date: 2017-02-17
Publication date: 2017-09-01
Anticipated expiration: 2027-02-17

Abstract

The utility model discloses a kind of comb line filter, including cavity, the pectinate line resonant column being arranged in cavity and the signal port being arranged on cavity, fin is also integrated with cavity, the utility model on filter cavity by increasing rational fin, in the case where not increasing effective volume, increasing heat radiation area strengthens heat dispersion, temperature rise is reduced, so as to solve the too small shortcoming of mean power.

Description

A kind of comb line filter

Technical field

The utility model is related to a kind of passive device wave filter, more particularly, to a kind of comb line filter.

Background technology

Wave filter is the conventional passive device in the communications field, and comb line filter is one of conventional wave filter species again, Relative to cavity body filter, comb line filter has small volume, and sound construction, performance is stable, and Q values are moderate, and high side parasitic leads to Band farther out the advantages of, while comb filter design when can also be limited by power capacity, power capacity is by resistance and medium Are there is not allowed maximum in aging, deformation and the voltage flash phenomenon that loss consumes device caused by the heat energy produced Allow power load, power capacity has mean power capacity and peak power capacity, and mean power capacity mainly investigates wave filter Thermal diffusivity, the radiating effect of wave filter directly affects the service life of wave filter.

But comb line filter, due to architectural limitation, its power capacity is too small, the easy aging of wave filter, product matter is influenceed Amount, if increasing its power capacity by simple designs, the volume of wave filter is again relatively large, does not meet passive device miniaturization Development trend.

Utility model content

The purpose of this utility model is the defect for overcoming prior art there is provided a kind of good heat dissipation effect, and power capacity is high, And the comb line filter of small volume.

To achieve the above object, the utility model proposes following technical scheme：A kind of comb line filter, the wave filter It is also integrated on the cavity including cavity, the pectinate line resonant column being arranged in cavity and the signal port being arranged on cavity There is fin.

Preferably, the fin extends integrally formed by the cavity.

Preferably, the fin is arranged on the opposite side relative to the signal port on the cavity.

Preferably, the fin is radiating toothing, and the opening of the radiation tooth is directed away from the side of the cavity.

Preferably, the wave filter also includes cover plate, and the cover plate is fastened on the cavity, and the cover plate is installed Afterwards, the fin is in the external environment condition of the wave filter.

The utility model is not increasing the situation of effective volume by increasing rational fin on filter cavity Under, increasing heat radiation area strengthens heat dispersion, temperature rise is reduced, so as to solve the too small shortcoming of mean power.

Brief description of the drawings

Fig. 1 is the utility model comb line filter structural representation；

Fig. 2 is that the utility model comb line filter removes the structural representation after cover plate.

Reference：1st, cavity, 2, pectinate line resonant column, 3, signal port, 31, high frequency port, 32, low frequency port, 33, Combining port, 4, fin, 5, cover plate.

Embodiment

Below in conjunction with accompanying drawing of the present utility model, the technical scheme progress to the utility model embodiment is clear, complete Description.

As depicted in figs. 1 and 2, the utility model comb line filter includes cavity 1, some pectinations being arranged in cavity Fin 4 is integrated with line resonant column 2 and the signal port 3 being arranged on cavity wall, the cavity 1, passes through fin knot Structure increases the high power capacity of wave filter, while pectinate line is combined with heat radiating fin structure so that wave filter small volume.

Specifically, the signal port 3 includes high frequency port 31, low frequency port 32 and combining port 33, correspondingly, institute State wave filter by the both sides of combining port 33 to be divided into front end and low frequency end, the present embodiment diagram, the fin 4 is set In side of the low frequency end away from the signal port so that the resonant column of low frequency end is slightly shorter than the resonant column of front end, as Alternatively, the fin in the utility model can also be arranged on front end relevant position.

Further say, fin 4 of the present utility model is using radiating toothing, and radiation tooth is stretched out one by cavity Formed, its dentation opening outwardly, opening direction and the direction of pectinate line resonant column 2（Axially）It is parallel or substantially parallel, be conducive to sky Between arrangement and radiate, optionally, fin of the present utility model can also be other fin-like structures.

With reference to shown in Fig. 2, the utility model wave filter also includes cover plate 5, and the cover plate 5 is fastened on the cavity 1, institute State cover plate 5 and form a step-like breach close to the side of the fin 4 so that the pectinate line resonant column 2 is hidden in institute State in cavity, but the fin 4 is conducive to cavity inner temperature to conduct in the external environment condition of wave filter, improves radiating Effect.

By craze for computer simulation software Icepak, in normal operation, temperature has obtained obvious reduction, this practicality With 40 DEG C of the toothing normal working temperature that radiates after new optimization（It is preferred that before reach 60 DEG C）, and by high temperature environments There is the dB of Insertion Loss 0.54 under radiating toothing normal operating conditions after actual temperature drift characteristic, optimization, dissipated far below nothing before optimization The dB of Insertion Loss 0.63 under hot toothing normal operating conditions.

In summary, the utility model is not increasing effective body by increasing rational fin on filter cavity In the case of product, increasing heat radiation area strengthens heat dispersion, temperature rise is reduced, so as to solve the too small shortcoming of mean power, simultaneously Application of the radiating toothing in comb line filter, serves reduction temperature rise, reduces the effect of temperature drift.

Technology contents and technical characteristic of the present utility model are had revealed that as above, but those skilled in the art still may be used A variety of replacements and modification without departing substantially from the utility model spirit can be made based on teaching of the present utility model and announcement, therefore, this Utility model protection scope should be not limited to the content disclosed in embodiment, and should include various without departing substantially from replacement of the present utility model And modification, and covered by present patent application claim.

Claims

1. a kind of comb line filter, it is characterised in that the wave filter includes cavity, the pectinate line resonance being arranged in cavity Fin is also integrated with post and the signal port being arranged on cavity, the cavity.

2. comb line filter according to claim 1, it is characterised in that the fin extends one by the cavity Formed.

3. comb line filter according to claim 1, it is characterised in that the fin is arranged on phase on the cavity For the opposite side of the signal port.

4. comb line filter according to claim 1, it is characterised in that the fin is radiating toothing, described The opening of radiation tooth is directed away from the side of the cavity.

5. comb line filter according to claim 1, it is characterised in that the wave filter also includes cover plate, the lid Plate is fastened on the cavity, after the cover plate is installed, and the fin is in the external environment condition of the wave filter.