CN213693645U - Broadband phase shifter - Google Patents
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- CN213693645U CN213693645U CN202023082142.7U CN202023082142U CN213693645U CN 213693645 U CN213693645 U CN 213693645U CN 202023082142 U CN202023082142 U CN 202023082142U CN 213693645 U CN213693645 U CN 213693645U
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- 239000003990 capacitor Substances 0.000 claims abstract description 37
- 230000002457 bidirectional effect Effects 0.000 claims description 20
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000010363 phase shift Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 8
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of electronic communication, in particular to a broadband phase shifter, which comprises a digital broadband phase shifter and an analog broadband phase shifter, wherein the digital broadband phase shifter comprises a plurality of switch capacitors, a plurality of independent capacitors are connected between the signal input end and the output end of an electronic communication system, the other end of each capacitor is connected with a switch and then grounded to form a switch capacitor array phase shifter, the analog broadband phase shifter comprises a first coupler, a second coupler, a first attenuator and a second attenuator which are arranged between the two couplers, the input end of the first coupler is connected with the output end of the digital broadband phase shifter, the output end of the coupler is respectively connected with the input ends of the first attenuator and the second attenuator, the input end of the second coupler is respectively connected with the output ends of the first attenuator and the second attenuator, and the output end of the coupler outputs signals, the utility model has the characteristics of continuously adjustable, broadband, constant time delay, fixed gain/insertion loss.
Description
Technical Field
The utility model relates to an electronic communication technical field, specific field is a broadband phase shifter.
Background
Wideband phase shifters are important devices in communication systems. The requirements for broadband phase shifters in modern broadband communication systems are: 1. broad band (> 10%); 2. a phase-shifted response that is uniform in-band; 3. high precision (flatness/error in the band ≦ 2 °); 4. constant group delay; 5. fixed insertion loss/gain; 6. can be continuously adjusted to (90 to 90, + 90) or (180 to 180).
However, the research in the industry is mainly in two directions: broadband and phase uniformity. Among other things, achieving broadband phase shift is particularly challenging. While maintaining in-band phase flatness is another challenge. As for the group delay and attenuation characteristics of different phase responses, they are the most neglected indicators.
For broadband characteristics, broadband devices are mostly adopted to complete the broadband characteristics, but the flatness and the precision of the broadband are determined by the adopted basic devices, materials and the like. The flatness of the broadband and the in-band is uncontrollable and unadjustable.
The phase shifter is mainly researched in two aspects: broadband characteristics and amplitude equalization. Among them, it is particularly difficult to implement a broadband phase shifter. For the existing phase shifters, the phase shifter implemented by using voltage-controlled varactor diodes is the most well known. The phase shifter (A type) has the advantages of continuously adjustable phase; the defects of poor broadband characteristics and poor amplitude uniformity; it is particularly important that its amplitude-frequency and group delay characteristics are accompanied by uncontrollable variations as the phase and frequency change.
As integrated circuit technology and processes advance, switched capacitor arrays are used to implement fixed phase shifters and tunable phase shifters. The characteristics of this type (class B) phase shifter: the broadband is wider than class A, but is not continuously adjustable, and the phase error is larger.
In summary, the wideband, wide-range, continuous phase adjustable phase shifter required in modern communication systems with stable amplitude-frequency characteristics and constant group delay characteristics does not exist at present.
Therefore, the need for a wideband phase shifter with the above features is very urgent.
SUMMERY OF THE UTILITY MODEL
To the deficiencies of the prior art, an object of the utility model is to provide a broadband phase shifter.
In order to achieve the above object, the utility model provides a following technical scheme: a wideband phase shifter includes a digital wideband phase shifter and an analog wideband phase shifter. The digital broadband phase shifter comprises a plurality of switched capacitors, a plurality of independent capacitors are connected between a signal input end and an output end of an electronic communication system, and the other end of each capacitor is grounded after being connected with a switch, so that a switched capacitor array phase shifter is formed; the analog broadband phase shifter comprises a first coupler, a second coupler, a first attenuator and a second attenuator, wherein the first attenuator and the second attenuator are arranged and connected between the two couplers, the input end of the first coupler is connected with the output end of the digital broadband phase shifter, the output end of the coupler is respectively connected with the input ends of the first attenuator and the second attenuator, the input end of the second coupler is respectively connected with the output ends of the first attenuator and the second attenuator, and the output end of the coupler outputs signals.
Preferably, the first attenuator includes a third coupler, a first capacitor, a second capacitor, a first bidirectional diode, a second bidirectional diode, a first inductor and a second inductor, an input end of the third coupler is connected with an output end of the first coupler, an isolation end of the third coupler is connected with an input end of the second coupler, a coupling end of the third coupler is sequentially connected in series with the first capacitor and the first bidirectional diode and then grounded, a through end of the third coupler is sequentially connected in series with the second capacitor and the second bidirectional diode and then grounded, one end of the first inductor is connected to a connection point of the first capacitor and the first bidirectional diode, the other end of the first inductor is connected to one end of the second inductor, and the other end of the second inductor is connected to a connection point of the second capacitor and the second bidirectional diode.
Preferably, the second attenuator and the first attenuator are identical in structural component and connection relationship.
Preferably, a connection point between the first inductor and the second inductor of the first attenuator is set as a first voltage terminal.
Preferably, a connection point between the first inductor and the second inductor of the second attenuator is set as a second voltage terminal.
Compared with the prior art, the beneficial effects of the utility model are that: the phase shifter with the broadband, the stable amplitude-frequency characteristic and the fixed group delay characteristic is designed, so that the phase shifter has consistent continuously adjustable and controllable phase shift quantity and good amplitude balance degree in an extremely wide working frequency band, and has the characteristics of continuous adjustability, broadband, constant delay and fixed gain.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the digital broadband phase shifter of the present invention;
FIG. 3 is a schematic diagram of a simulated wideband phase shifter according to the present invention;
FIG. 4 is a schematic diagram of the attenuator structure of the present invention;
fig. 5 is a table of phase states of phase shifters.
In the figure: 1. a digital broadband phase shifter; 2. simulating a broadband phase shifter; 3. a first attenuator; 4. a second attenuator; 5. a first coupler; 6. a second coupler; 7. a switched capacitor; 8. a first capacitor; 9. a second capacitor; 10. a first bidirectional diode; 11. a second bidirectional diode; 12. a first inductor; 13. a second inductor; 14. a third coupler.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a broadband moves looks ware, includes that digital broadband moves looks ware and simulation broadband and moves looks ware, digital broadband moves looks ware and includes a plurality of switched capacitor, and switched capacitor is series connection's electric capacity and independent switch, is connected with the independent electric capacity of a plurality of between electronic communication system's signal input end and output, and the other end of every electric capacity all connects independent switch back ground connection, constitutes switched capacitor array and moves the ware, constitutes the controllable phase place of dispersion.
The analog broadband phase shifter comprises a first coupler, a second coupler, a first attenuator and a second attenuator, wherein the first attenuator and the second attenuator are arranged and connected between the two couplers, the input end of the first coupler is connected with the output end of the digital broadband phase shifter, the output end of the coupler is respectively connected with the input ends of the first attenuator and the second attenuator, the input end of the second coupler is respectively connected with the output ends of the first attenuator and the second attenuator, and the output end of the coupler outputs signals.
The analog broadband phase shifter has the advantages of continuously adjustable phase and large regulation range.
The attenuator is continuously adjustable in phase.
The first attenuator comprises a third coupler, a first capacitor, a second capacitor, a first bidirectional diode, a second bidirectional diode, a first inductor and a second inductor, wherein the input end of the third coupler is connected with the output end of the first coupler, the isolation end of the third coupler is connected with the input end of the second coupler, the coupling end of the third coupler is sequentially connected with the first capacitor and the first bidirectional diode in series and then grounded, the through end of the third coupler is sequentially connected with the second capacitor and the second bidirectional diode in series and then grounded, one end of the first inductor is connected to the connection point of the first capacitor and the first bidirectional diode, the other end of the first inductor is connected to one end of the second inductor, and the other end of the second inductor is connected to the connection point of the second capacitor and the second bidirectional diode.
And a connection point between the first inductor and the second inductor of the first attenuator is set as a first voltage end.
The second attenuator and the first attenuator have the same structural components and connection relations.
And the connection point between the first inductor and the second inductor of the second attenuator is set as a second voltage end.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A wideband phase shifter, comprising: the device comprises a digital broadband phase shifter module and an analog broadband phase shifter module which are arranged in a matching mode, and signals pass through the digital broadband phase shifter module and the analog broadband phase shifter module and then are output to be stable broadband signals.
2. A wideband phase shifter as claimed in claim 1, wherein: the digital broadband phase shifter module comprises a plurality of switched capacitors, a plurality of independent capacitors are connected between the signal input end and the output end, and the other end of each capacitor is grounded after being connected with a switch, so that the switched capacitor array phase shifter is formed.
3. A wideband phase shifter as claimed in claim 2, wherein: the analog broadband phase shifter module comprises a first coupler, a second coupler, a first attenuator and a second attenuator, wherein the first attenuator and the second attenuator are arranged and connected between the two couplers, the input end of the first coupler is connected with the output end of the digital broadband phase shifter, the output end of the coupler is respectively connected with the input ends of the first attenuator and the second attenuator, the input end of the second coupler is respectively connected with the output ends of the first attenuator and the second attenuator, the output end of the coupler outputs signals, and the analog broadband phase shifter module changes the phase shift amount of the phase shifter by adjusting the attenuation value proportion of the first attenuator and the second attenuator.
4. A wideband phase shifter as claimed in claim 3, wherein: the first attenuator comprises a third coupler, a first capacitor, a second capacitor, a first bidirectional diode, a second bidirectional diode, a first inductor and a second inductor, wherein the input end of the third coupler is connected with the output end of the first coupler, the output end of the third coupler is connected with the input end of the second coupler, the coupling degree of the third coupler is sequentially connected with the first capacitor and the first bidirectional diode in series and then grounded, the direct-through end of the third coupler is sequentially connected with the second capacitor and the second bidirectional diode in series and then grounded, one end of the first inductor is connected to the connection point of the first capacitor and the first bidirectional diode, the other end of the first inductor is connected to one end of the second inductor, and the other end of the second inductor is connected to the connection point of the second capacitor and the second bidirectional diode.
5. A wideband phase shifter as claimed in claim 4, wherein: the second attenuator and the first attenuator have the same structural components and connection relations.
6. A wideband phase shifter as claimed in claim 5, wherein: and a connection point between the first inductor and the second inductor of the first attenuator is set as a first voltage end.
7. A wideband phase shifter as claimed in claim 6, wherein: and the connection point between the first inductor and the second inductor of the second attenuator is set as a second voltage end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023082142.7U CN213693645U (en) | 2020-12-21 | 2020-12-21 | Broadband phase shifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023082142.7U CN213693645U (en) | 2020-12-21 | 2020-12-21 | Broadband phase shifter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213693645U true CN213693645U (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023082142.7U Active CN213693645U (en) | 2020-12-21 | 2020-12-21 | Broadband phase shifter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213693645U (en) |
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2020
- 2020-12-21 CN CN202023082142.7U patent/CN213693645U/en active Active
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Effective date of registration: 20240612 Address after: Room 1011, Golen Building, No. 398 Guangming Road, Huaqiao Town, Kunshan City, Suzhou City, Jiangsu Province, 215332 Patentee after: KUNSHAN MEIBO ZHONGXIN INVEST MAN ENTPR Ltd. PARTNERSHIP Country or region after: China Address before: No.15, Jinyang Road, Huaqiao Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: Kunshan wangfan Information Technology Co.,Ltd. Country or region before: China |