CN202094258U - Pilot frequency combiner - Google Patents
Pilot frequency combiner Download PDFInfo
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- CN202094258U CN202094258U CN2011201631046U CN201120163104U CN202094258U CN 202094258 U CN202094258 U CN 202094258U CN 2011201631046 U CN2011201631046 U CN 2011201631046U CN 201120163104 U CN201120163104 U CN 201120163104U CN 202094258 U CN202094258 U CN 202094258U
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- mixer
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Abstract
A pilot frequency combiner comprises two resonant circuits and a band-pass filter adopting a pectinate line structure in each circuit, wherein the frequency band of one circuit is 800-960 MHz, and the frequency band of the other circuit is 1710-2500 MHz. The pilot frequency combiner has the advantages as follows: (1) the frequency bands are wide and have universality; (2) the structure is simple, the technology is easy and the installation is convenient; (3) the volume is reduced and the material cost is saved; (4) the power capacity is much higher than that of a microstrip line; and (5) the insertion loss in property is small, the restraint outside the band is high and the manufacturing tolerance is low.
Description
Technical field
The utility model relates to the passive device of communication technical field, is a kind of alien frequencies mixer.
Background technology
Continuous development along with the communications industry, use the people of means of communication more and more, the zone of the network coverage more and more widely, and also each is variant according to network for communications band, as networks such as GSM, CDMA, DCS, WCDMA, WLAN, thus more and more higher to the requirement of the performance of communication device, structure.In the keen competition at home and abroad of each enterprise, must try every possible means that it is a kind of more common, popular to find out, the device that range of application is wider has very big demand to the mixer with wide region frequency range.Mixer divides with two kinds of frequency combiner and alien frequencies mixers, and the effect of alien frequencies mixer is to be used for system or one road signal is carried out frequency division the signal power of two kinds or more of different frequency ranges is synthetic
Summary of the invention
Problem to be solved in the utility model is: the existing communication field needs the mixer of the wide range of frequencies of a kind of applied range, easy realization simple in structure.
The technical solution of the utility model is: a kind of alien frequencies mixer, comprise the two-way resonant circuit, and the band pass filter of pectinate line structure is adopted on every road, and one tunnel frequency range is 800-960MH, and another road frequency range is 1710-2500MHz.
All electric capacity are added in on one side in the resonant circuit: the resonance post is equal to an electric capacity and inductance and resistance, electric capacity all is placed on the same side of inductance and resistance.
Be coated with one deck silver in the cavity of mixer.
This practical wideband mixer provides a kind of performance index superior, and compact conformation is firm, profile is small and exquisite, and is with low cost, is convenient to install.GSM﹠amp; CDMA is as No. one resonant circuit, DCS﹠amp; WCDMA﹠amp; WLAN is as another road resonant circuit, thereby the super wideband of realization closes the road, and adopts band pass filter to realize electrical performance indexes, has adopted the pectinate line structure for simplifying the mixer structure on the structure, saves the space, thereby has saved cost.
This practical mixer frequency range is very wide, and its all electric capacity all are added in on one side, and the pectinate line structure realizes that attenuation characteristic is asymmetric:
,
Be wavelength,
Be the length of the resonator of resonant circuit,
Be the centre frequency of band pass filter second passband,
Be
Corresponding frequency is so be applicable to the place that wide stopband is used.1), the frequency band broad the utlity model has following advantage:, have versatility; 2), simple in structure, technology is simple and easy, and is easy for installation; 3), volume reduces the saving material cost; 4), because what adopt is the pectinate line structure, saved the inside cavity space greatly, thereby increased power, power capacity exceeds much with respect to microstrip line; 5), microstrip line is owing to be to be laid in dielectric surface along with power strengthens the temperature increase insecurity that comes off easily that raises, because the utility model resonator reduces, Insertion Loss can diminish, and employing band pass filter, inhibition degree height, therefore Insertion Loss is little on the performance, band is outer suppress height can self-supporting, manufacturing tolerance is also low.
Description of drawings
Fig. 1 is that schematic diagram is arranged in the utility model mixer structure and internal resonance chamber.
Fig. 2 is the contour structure size schematic diagram of the utility model mixer.
Embodiment
The utility model wideband mixer relates to the microwave passive component field of the communications field, in the passive industry of the microwave of the communications field, almost can be used in each different system, popular especially recently relatively 3G network technology, high ferro cover private network technology etc., are mainly used in fields such as base station system in the network coverage and indoor distribution.
As Fig. 1, the utility model comprises the two-way resonant circuit, and the band pass filter of pectinate line structure is adopted on every road, and one tunnel frequency range is 800-960MH, and another road frequency range is 1710-2500MHz, respectively corresponding GSM﹠amp; CDMA and DCS﹠amp; WCDMA﹠amp; WLAN by the interdigital filter principle, is added in all electric capacity of filter with on one side, and the length of resonator depends on the size of loading capacitance, gets 1/8 wavelength here, and exist this moment
With
Just there is attenuation pole at the place.In order to satisfy the weakness at zero point in the performance index, adopt complicated cross-couplings in the existing general technology scheme, open suitable window in inside cavity, make the structure complicated of cavity, processing is inconvenient, also brings difficulty for design.Then there is not such problem in the utility model, and is simple in structure.
The utlity model has following characteristics:
1, designs for satisfying the actual engineering of mobile communication,, note generality during design, need to adapt to various frequency range requirements because frequency range is wide;
2, by means of computer aided design software, adopt compression, senior methods for designing such as trap and high Q value, to the silver-plated requirement of cavity, and fineness requires to carry out simulation optimization;
Consider the optimization of structure when 3, designing, directly adopted the filter of pectinate line structure to realize, by the interdigital filter principle, all electric capacity of filter are added in on one side, so-called electric capacity is with being exactly in theory the resonance post of the inside to be equal to an electric capacity and inductance and resistance on one side, and all electric capacity are lined up the same line, and electric capacity all are placed on the same side of inductance and resistance, here be the ABC of filter and electronic circuit, no longer describe in detail;
4, utilize digital control processing after finishing structure chart, for making its Insertion Loss littler, it is silver-plated to carry out inside cavity;
5, cover above the cavity regulating cover plate at last, carry out actual fine setting and reach better electrical performance indexes, the example alien frequencies mixer that obtains as shown in Figure 2.
In view of the above, the design of the utility model mixer is more convenient as can be seen, and the frequency range of device is very wide, and Insertion Loss is very little, outer inhibition of band and interport isolation are all very high, be convenient to produce in batches, handling ease, mounting structure is simple, technology is simple and easy, save material and cost of human resources, highly versatile is easy to adapt to the requirement of market development.
Claims (3)
1. an alien frequencies mixer is characterized in that comprising the two-way resonant circuit, and the band pass filter of pectinate line structure is adopted on every road, and one tunnel frequency range is 800-960MH, and another road frequency range is 1710-2500MHz.
2. a kind of alien frequencies mixer according to claim 1 is characterized in that in the resonant circuit that all electric capacity are added in on one side: the resonance post is equal to an electric capacity and inductance and resistance, electric capacity all is placed on the same side of inductance and resistance.
3. a kind of alien frequencies mixer according to claim 1 and 2 is characterized in that being coated with one deck silver in the cavity of mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201631046U CN202094258U (en) | 2011-05-20 | 2011-05-20 | Pilot frequency combiner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201631046U CN202094258U (en) | 2011-05-20 | 2011-05-20 | Pilot frequency combiner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202094258U true CN202094258U (en) | 2011-12-28 |
Family
ID=45369306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201631046U Expired - Fee Related CN202094258U (en) | 2011-05-20 | 2011-05-20 | Pilot frequency combiner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202094258U (en) |
-
2011
- 2011-05-20 CN CN2011201631046U patent/CN202094258U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20160520 |