CN112688652A - Numerical control 0-pi phase shifter - Google Patents
Numerical control 0-pi phase shifter Download PDFInfo
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- CN112688652A CN112688652A CN202011523322.6A CN202011523322A CN112688652A CN 112688652 A CN112688652 A CN 112688652A CN 202011523322 A CN202011523322 A CN 202011523322A CN 112688652 A CN112688652 A CN 112688652A
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- 230000010363 phase shift Effects 0.000 description 4
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Abstract
The invention relates to a numerical control 0-pi phase shifter, which comprises a high-power broadband balun and a diode bridge; the high-power broadband balun is provided with two branches, a P1 end and a P4 end of the diode bridge are connected to the two branches, and a P1 end or a P4 end is also connected with a control voltage end; the radio frequency input end is connected to the other end of the high-power broadband balun; the P3 end of the diode bridge is connected with the radio frequency output end through a first capacitor, and the P2 end is grounded to realize single-ended radio frequency output. The invention has the advantages that: the control voltage of the phase-locked loop can be lower than the signal amplitude, the PIN diode has good linearity, the diode attenuator has small distortion, low harmonic and good phase reversal precision, the power capacity can reach more than 10W, and single-ended output and balanced output can be realized so as to facilitate cascade connection.
Description
Technical Field
The invention relates to the technical field of electronic devices, in particular to a 0-pi phase shifter.
Background
A phase shifter is a device capable of adjusting the phase of a wave; the phase shifter functions to shift the phase of the signal by an angle. The tide of the connecting line is sensitive by the phase shifter protocol, the voltage stability is not damaged due to linkage tripping and successive quitting of the connecting line, and the voltage stability limit can be obviously improved. The operating principle thereof differs depending on the constitution. For example, a transistor circuit can add a control signal to the input end to control the phase shift; in some circuits, the phase shift is achieved by using the time delay of a resistance-capacitance circuit; the single chip microcomputer control system can also use an internal timer to achieve the purpose of phase shifting.
With the change of application scenes, particularly under the requirement of high power, the defects of insufficient power capacity, low linearity and easy signal distortion of the existing phase shifter become more obvious.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a numerical control 0-pi phase shifter, which solves the problems of insufficient power capacity, low linearity and easy signal distortion of the conventional phase shifter.
The purpose of the invention is realized by the following technical scheme: a numerical control 0-pi phase shifter comprises a high-power broadband balun and a diode bridge; the high-power broadband balun is provided with two branches, a P1 end and a P4 end of the diode bridge are connected to the two branches, and a P1 end or a P4 end is also connected with a control voltage end; the radio frequency input end is connected to the other end of the high-power broadband balun; the P3 end of the diode bridge is connected with the radio frequency output end through a first capacitor, and the P2 end is grounded to realize single-ended radio frequency output.
Furthermore, a first choke inductor connected to ground is connected to the terminal P3 of the diode bridge, so as to implement dc grounding of the terminal P3.
Furthermore, the P2 end of the diode bridge is connected with the first capacitor and then connected with the radio frequency output end, and the P3 end of the diode bridge is connected with the second capacitor and then connected with the radio frequency output end, so that double-end balanced radio frequency output is realized.
Furthermore, a first choke inductor connected to ground is connected to the diode bridge P3, and a second choke inductor connected to ground is connected to the diode bridge P2, so as to implement dc grounding of the P3 terminal and the P2 terminal.
Further, a third choke inductor and a resistor for preventing radio frequency leakage are connected between the control voltage terminal and the terminal P1 or the terminal P4 of the diode bridge.
The invention has the following advantages: a numerical control 0-pi phase shifter has the advantages that the control voltage can be lower than the signal amplitude, a PIN diode has good linearity, a diode attenuator has small distortion and low harmonic, the phase overturning precision is good, the power capacity can reach more than 10W, single-ended output can be realized, balanced output can be realized, and cascade connection is facilitated.
Drawings
FIG. 1 is a circuit diagram of a single ended output according to the present invention;
FIG. 2 is a circuit diagram of balanced output according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application. The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, in embodiment 1, a digitally controlled 0-pi phase shifter includes a high-power broadband balun and a diode bridge, which can implement controllable phase inversion and switch between a reference phase and a 180 ° phase shift; the high-power broadband balun is provided with two branches, a P1 end and a P4 end of the diode bridge are connected to the two branches, and a P1 end or a P4 end is also connected with a control voltage end Vt; the radio frequency input end is connected to the other end of the high-power broadband balun; the P3 end of the diode bridge is connected with the radio frequency output end through a first capacitor, and the P2 end is grounded to realize single-ended radio frequency output.
Furthermore, a first choke inductor connected to ground is connected to the terminal P3 of the diode bridge, so as to implement dc grounding of the terminal P3. A first choke inductor connected to ground is connected to the diode bridge P3, and a second choke inductor connected to ground is connected to the diode bridge P2, so that dc grounds of the P3 terminal and the P2 terminal are achieved. A third choke inductor and a resistor R1 for preventing rf leakage are connected between the control voltage terminal Vt and the diode bridge terminal P1 or P4. The resistance of the resistor R1 is selected according to the diode conducting current and the control voltage Vt, so that the conducting diode current meets the requirement of radio frequency conduction.
As shown in fig. 2, in embodiment 2, a digitally controlled 0-pi phase shifter includes a high-power broadband balun and a diode bridge, which can implement controllable phase inversion and switch between a reference phase and a 180 ° phase shift; the high-power broadband balun is provided with two branches, a P1 end and a P4 end of the diode bridge are connected to the two branches, and a P1 end or a P4 end is also connected with a control voltage end Vt; the radio frequency input end is connected to the other end of the high-power broadband balun; and the P2 end of the diode bridge is connected with the first capacitor and then connected with the radio frequency output end, and the P3 end of the diode bridge is connected with the second capacitor and then connected with the radio frequency output end, so that double-end balanced radio frequency output is realized.
Furthermore, a first choke inductor connected to ground is connected to the diode bridge P3, and a second choke inductor connected to ground is connected to the diode bridge P2, so as to implement dc grounding of the P3 terminal and the P2 terminal. A third choke inductor and a resistor R1 for preventing rf leakage are connected between the control voltage terminal Vt and the diode bridge terminal P1 or P4. The resistance of the resistor R1 is selected according to the diode conducting current and the control voltage Vt, so that the conducting diode current meets the requirement of radio frequency conduction.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. A numerical control 0-pi phase shifter is characterized in that: the high-power broadband balun comprises a high-power broadband balun and a diode bridge; the high-power broadband balun is provided with two branches, a P1 end and a P4 end of the diode bridge are connected to the two branches, and a P1 end or a P4 end is also connected with a control voltage end; the radio frequency input end is connected to the other end of the high-power broadband balun; the P3 end of the diode bridge is connected with the radio frequency output end through a first capacitor, and the P2 end is grounded to realize single-ended radio frequency output.
2. The digitally controlled 0-pi phase shifter of claim 1, wherein: and a first choke inductor which is connected with the ground is connected to the end P3 of the diode bridge, so that the direct current grounding of the end P3 is realized.
3. The digitally controlled 0-pi phase shifter of claim 1, wherein: and the P2 end of the diode bridge is connected with the first capacitor and then connected with the radio frequency output end, and the P3 end of the diode bridge is connected with the second capacitor and then connected with the radio frequency output end, so that double-end balanced radio frequency output is realized.
4. A digitally controlled 0-pi phase shifter as claimed in claim 3, wherein: a first choke inductor connected to ground is connected to the diode bridge P3, and a second choke inductor connected to ground is connected to the diode bridge P2, so that dc grounds of the P3 terminal and the P2 terminal are achieved.
5. A digitally controlled 0-pi phase shifter as claimed in any one of claims 1 to 4, wherein: a third choke inductor and a resistor for preventing radio frequency leakage are connected between the control voltage terminal and the terminal P1 or the terminal P4 of the diode bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011523322.6A CN112688652A (en) | 2020-12-22 | 2020-12-22 | Numerical control 0-pi phase shifter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011523322.6A CN112688652A (en) | 2020-12-22 | 2020-12-22 | Numerical control 0-pi phase shifter |
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| CN112688652A true CN112688652A (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011523322.6A Pending CN112688652A (en) | 2020-12-22 | 2020-12-22 | Numerical control 0-pi phase shifter |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2331090Y (en) * | 1998-01-12 | 1999-07-28 | 王禚 | S-wave section PIN diode phase shifter-switch module |
| CN2548275Y (en) * | 2002-02-08 | 2003-04-30 | 王韧 | S wave-band switch module |
| US20030100285A1 (en) * | 2001-11-28 | 2003-05-29 | Tyco Electronics Corporation | Sensor front-end with phase coding capability |
| CN103580645A (en) * | 2013-08-06 | 2014-02-12 | 南京理工大学 | 0/pi digital phase shifter based on ultra wide band balun |
| CN109450381A (en) * | 2018-11-30 | 2019-03-08 | 南京米乐为微电子科技有限公司 | A kind of passive wideband frequency mixer |
-
2020
- 2020-12-22 CN CN202011523322.6A patent/CN112688652A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2331090Y (en) * | 1998-01-12 | 1999-07-28 | 王禚 | S-wave section PIN diode phase shifter-switch module |
| US20030100285A1 (en) * | 2001-11-28 | 2003-05-29 | Tyco Electronics Corporation | Sensor front-end with phase coding capability |
| CN2548275Y (en) * | 2002-02-08 | 2003-04-30 | 王韧 | S wave-band switch module |
| CN103580645A (en) * | 2013-08-06 | 2014-02-12 | 南京理工大学 | 0/pi digital phase shifter based on ultra wide band balun |
| CN109450381A (en) * | 2018-11-30 | 2019-03-08 | 南京米乐为微电子科技有限公司 | A kind of passive wideband frequency mixer |
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Application publication date: 20210420 |
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| RJ01 | Rejection of invention patent application after publication |