CN209447995U - Highly selective miniaturization pectination and interdigital mixing cavity configuration duplexer - Google Patents
Highly selective miniaturization pectination and interdigital mixing cavity configuration duplexer Download PDFInfo
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- CN209447995U CN209447995U CN201920452069.6U CN201920452069U CN209447995U CN 209447995 U CN209447995 U CN 209447995U CN 201920452069 U CN201920452069 U CN 201920452069U CN 209447995 U CN209447995 U CN 209447995U
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- band filter
- pectination
- output port
- duplexer
- miniaturization
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Abstract
The utility model discloses a kind of highly selective miniaturization pectination and interdigital mixing cavity configuration duplexer includes high frequency input/output port, low frequency input/output port and antenna opening input/output terminal, it is high-frequency band filter between the high frequency input/output port and the antenna opening input/output port, is low band filter between the low frequency input/output port and the antenna opening input/output port；The high-frequency band filter is connected with the low band filter by public resonant cavity；The access of the high-frequency band filter includes the first electric coupling structure, the second electric coupling structure and at least one magnetic coupling arrangement composition；The low band filter includes at least one magnetic coupling arrangement.The duplexer of the utility model has small in size, at low cost, light-weight, and the beneficial effect that performance is good.
Description
Technical field
The utility model relates to mobile communication technology field, in particular to a kind of highly selective miniaturization pectination and interdigital mixed
Close cavity configuration duplexer.
Background technique
Duplexer is the key fitment in communication system, and effect is will to emit and receive signal to be isolated, and guarantees to receive
It can be worked normally simultaneously with transmitting.It is made of the filter of two groups of different frequencies, and the machine transmitting signal is avoided to be transferred to
Receiver.Currently, communication system is generally all to miniaturization, the duplexer of miniaturization is always research hotspot.Meanwhile frequency spectrum
Resource is increasingly crowded, and just to the selectivity of filter or duplexer, more stringent requirements are proposed for this.
In consideration of it, needing a highly selective miniaturization pectination based on requirements above and interdigital mixing cavity configuration duplex
Device.
Utility model content
In order to solve above-mentioned problems of the prior art, the utility model provides a kind of highly selective miniaturization comb
Shape and interdigital mixing cavity configuration duplexer.
The utility model technical scheme applied to solve the technical problem is as follows:
The highly selective miniaturization pectination of one kind and interdigital mixing cavity configuration duplexer, the pectination and interdigital mixing cavity configuration
Duplexer includes high frequency input/output port, low frequency input/output port and antenna opening input/output port, and the high frequency is defeated
Enter between output port and the antenna opening input/output port for high-frequency band filter, the low frequency input/output port and institute
It states between combining input/output port as low band filter；
The high-frequency band filter is connected with the low band filter by public resonant cavity；
The access of the high-frequency band filter includes the first electric coupling structure, the second electric coupling structure and at least one magnetic
Coupled structure；
The low band filter includes at least one magnetic coupling arrangement.
In some embodiments, the resonator of the high-frequency band filter and the low band filter is stepped impedance
Structure.
In some embodiments, the resonator of the high-frequency band filter and the low band filter passes through coupling muscle
It is connected.
In some embodiments, change the distance between first electric coupling structure and second electric coupling structure and electricity
The size for holding loading disc, responds first electric coupling structure with second electric coupling structure, makes the high band
Filter response realizes multiple transmission zeros in low side.
In some embodiments, change the distance between magnetic coupling arrangement of the low band filter and capacitive load disk
Size, so that the low band filter has multiple transmission zeros high-end.
In some embodiments, the pectination and interdigital mixing cavity configuration duplexer further include several tuning screws.
In addition, the utility model also provides a kind of duplexer, including above-mentioned highly selective miniaturization pectination and interdigital mixed
Close cavity configuration duplexer.
The beneficial effects of the utility model are: this duplexer is compared with traditional coaxial cavity duplexer, volume is about traditional
The 1/2 of volume, cost is insufficient traditional 1/2, and weight is insufficient traditional 1/3, while index can meet, or even individual indexs are excellent
More in traditional index.It is largely used in antenna at present, in the superior situation of volume Small Indicators significantly to antenna performance and index
It is promoted.
Detailed description of the invention
Fig. 1 is the knot of the highly selective miniaturization pectination of the utility model and interdigital mixing cavity configuration duplexer one embodiment
Structure schematic diagram；
Fig. 2 is the simulation result of the highly selective miniaturization pectination of the utility model and interdigital mixing cavity configuration duplexer.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model a part, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
The specification and claims of the utility model and term " first ", " second ", " third " in above-mentioned attached drawing
(if present)s such as " the 4 " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It answers
The data that the understanding uses in this way are interchangeable under appropriate circumstances, so that the embodiments described herein can be in addition to herein
Sequence other than diagram or the content of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units not
Those of be necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these processes, side
The intrinsic other step or units of method, product or equipment.
Fig. 1 and Fig. 2 respectively illustrates the highly selective miniaturization pectination of the utility model and interdigital mixing cavity configuration duplexer
Structural schematic diagram and simulation result diagram.
Referring to FIG. 1, in one embodiment of the utility model, the highly selective miniaturization pectination that provides and interdigital mixed
Close the structural schematic diagram of cavity configuration duplexer.
In the present embodiment, pectination and interdigital mixing cavity configuration duplexer include that high frequency input/output port 3, low frequency input are defeated
Exit port 5 and antenna opening input/output port 4, the high frequency input/output port 3 and the antenna opening input/output port
It is provided with high-frequency band filter between 4, is set between the low frequency input/output port 5 and the antenna opening input/output port 4
It is equipped with low band filter.
The high-frequency band filter is connected with the low band filter by public resonant cavity 2；
The access of the high-frequency band filter include the first electric coupling structure 6, the second electric coupling structure 6 and at least one
Magnetic coupling arrangement.
The low band filter includes at least one magnetic coupling arrangement.High-frequency band filter and low band filter are distinguished
It is made of resonant cavity, resonant rod and tuning screw.
Change the distance between two electric coupling structures 6 (the first electric coupling structure and second electric coupling structure) and electricity
The size for holding loading disc, responds first electric coupling structure with second electric coupling structure, makes the high band
Filter response realizes multiple transmission zeros in low side, and then increases selectivity.
Using the size for changing the distance between resonator and capacitive load disk, make in low band filter access to be all magnetic
Coupled structure, this kind of structure naturally make low band filter response have multiple transmission zeros high-end.
Length by amendment debugging screw includes several tuning screws 1, and straightener adds bring error.Adjacent resonators
Between by coupling muscle be connected (such as 7), to increase magnetic coupling amount.
In the present embodiment, each resonator is stepped impedance structure (SIR structure).
The beneficial effects of the utility model are:
The utility model compares traditional coaxial duplexer, and the volume and weight of the miniaturized duplexer is much smaller, can
Easily it is built in antenna.In addition, comparing traditional duplexer, which has used less cavity number to realize more
More transmission zeros substantially increases the selectivity of duplexer and reduces the insertion loss of duplexer, promotes the suppression of duplexer
System and isolation and reduction intermodulation product.
The utility model also provides a kind of duplexer, including above-mentioned highly selective miniaturization pectination and interdigital mixing chamber knot
Structure duplexer.
Specific embodiment of the present utility model described above does not constitute the restriction to scope of protection of the utility model.
Any other various changes and modifications made by any technical concept according to the present utility model should be included in practical
In novel scope of protection of the claims.
Claims (7)
1. a kind of highly selective miniaturization pectination and interdigital mixing cavity configuration duplexer, which is characterized in that the pectination and interdigital
Mixing cavity configuration duplexer includes high frequency input/output port, low frequency input/output port and antenna opening input/output port,
It is high-frequency band filter between the high frequency input/output port and the antenna opening input/output port, the low frequency input is defeated
It is low band filter between exit port and the antenna opening input/output port；
The high-frequency band filter is connected with the low band filter by public resonant cavity；
The access of the high-frequency band filter includes the first electric coupling structure, the second electric coupling structure and at least one magnetic coupling
Structure；
The low band filter includes at least one magnetic coupling arrangement.
2. highly selective miniaturization pectination as described in claim 1 and interdigital mixing cavity configuration duplexer, which is characterized in that institute
The resonator for stating high-frequency band filter and the low band filter is stepped impedance structure.
3. highly selective miniaturization pectination as claimed in claim 2 and interdigital mixing cavity configuration duplexer, which is characterized in that institute
The resonator for stating high-frequency band filter and the low band filter passes through coupling muscle and is connected.
4. highly selective miniaturization pectination as claimed in claim 2 and interdigital mixing cavity configuration duplexer, which is characterized in that change
The size for becoming the distance between first electric coupling structure and second electric coupling structure and capacitive load disk makes described
One electric coupling structure is responded with second electric coupling structure, realizes the high-frequency band filter response in low side multiple
Transmission zero.
5. highly selective miniaturization pectination as claimed in claim 4 and interdigital mixing cavity configuration duplexer, which is characterized in that change
Become the size of the distance between magnetic coupling arrangement of the low band filter He capacitive load disk, so that the low-frequency range filters
Device has multiple transmission zeros high-end.
6. highly selective miniaturization pectination as described in claim 1 and interdigital mixing cavity configuration duplexer, which is characterized in that institute
Stating pectination and interdigital mixing cavity configuration duplexer further includes several tuning screws.
7. a kind of duplexer, which is characterized in that including highly selective miniaturization pectination as claimed in any one of claims 1 to 6 and
Interdigital mixing cavity configuration duplexer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920452069.6U CN209447995U (en) | 2019-04-04 | 2019-04-04 | Highly selective miniaturization pectination and interdigital mixing cavity configuration duplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920452069.6U CN209447995U (en) | 2019-04-04 | 2019-04-04 | Highly selective miniaturization pectination and interdigital mixing cavity configuration duplexer |
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| CN209447995U true CN209447995U (en) | 2019-09-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109860965A (en) * | 2019-04-04 | 2019-06-07 | 深圳市金科泰通信设备有限公司 | Highly selective miniaturization pectination and interdigital mixing cavity configuration duplexer |
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2019
- 2019-04-04 CN CN201920452069.6U patent/CN209447995U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109860965A (en) * | 2019-04-04 | 2019-06-07 | 深圳市金科泰通信设备有限公司 | Highly selective miniaturization pectination and interdigital mixing cavity configuration duplexer |
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