CN109194303A - A kind of six bit digital phase shifters - Google Patents
A kind of six bit digital phase shifters Download PDFInfo
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- CN109194303A CN109194303A CN201811069489.2A CN201811069489A CN109194303A CN 109194303 A CN109194303 A CN 109194303A CN 201811069489 A CN201811069489 A CN 201811069489A CN 109194303 A CN109194303 A CN 109194303A
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- 230000010363 phase shift Effects 0.000 claims abstract description 138
- 230000005669 field effect Effects 0.000 claims description 49
- 230000000694 effects Effects 0.000 claims description 38
- 239000003990 capacitor Substances 0.000 claims description 30
- 230000005611 electricity Effects 0.000 claims description 6
- 238000003780 insertion Methods 0.000 description 19
- 230000037431 insertion Effects 0.000 description 19
- 230000008901 benefit Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/16—Networks for phase shifting
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/16—Networks for phase shifting
- H03H11/20—Two-port phase shifters providing an adjustable phase shift
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Abstract
The invention discloses a kind of six bit digital phase shifters, including 5.625 ° of phase-shift circuits, 11.25 ° of phase-shift circuits, 22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits, 90 ° of phase-shift circuits and 180 ° of phase-shift circuits, 5.625 ° of phase-shift circuits, 11.25 ° of phase-shift circuits, 22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits are associated between 90 ° of phase-shift circuits, 180 ° of phase-shift circuits with random order grade.Using the higher phase-shift circuit of phase shifter two as the output of phase shifter, output, phase shifter interpolar matching not only can be improved, and phase shifting accuracy can be effectively improved.
Description
Technical field
The present invention relates to phase shifter fields, and in particular to a kind of six bit digital phase shifters.
Background technique
Phase shifter is the important component of phased-array radar T/R component, for changing the transmission phase of signal, it for
Communication equipment, radar system have considerable effect, decide the quality of whole system performance.
Phase shifter is generally divided into analog and two kinds digital, and digital phase shifter is not due to by the shadow of voltage and temperature change
It rings and is widely used in phased-array radar.There are many implementation methods for it, and more commonly used has switch line style, loads line style, instead
Emitting and height-low-pass filtering type.The selection needs of phase shifter topological structure are determined according to specific design objective, high-precision
Degree, high-performance, low cost is what phase shifter design person was pursued.
Existing digital phase shifter is using such as application No. is 201010555904.2 structures comprising successively cascade
5.625 ° of phase-shift circuits, 11.25 ° of phase-shift circuits, 22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits, 90 ° of phase-shift circuits and 180 ° of phase shifts
Circuit can realize 64 kinds of shift states with 5.625 ° for phase shift step value in total in the range of 0~360 °.It is tied using this kind
The phase shifter of structure, matching degree are only capable of reaching -8db, and matching degree is not high.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention provides a kind of six bit digital phase shifters, matching degree is high.
The present invention is achieved through the following technical solutions:
A kind of six bit digital phase shifters, including 5.625 ° of phase-shift circuits, 11.25 ° of phase-shift circuits, 22.5 ° of phase-shift circuits,
45 ° of phase-shift circuits, 90 ° of phase-shift circuits and 180 ° of phase-shift circuits, 5.625 ° of phase-shift circuits, 11.25 ° of phase-shift circuits, 22.5 °
Phase-shift circuit, 45 ° of phase-shift circuits are associated between 90 ° of phase-shift circuits, 180 ° of phase-shift circuits with random order grade.Using this programme
Digital phase shifter structure, with 5.625 ° of steppings 0~360 ° of phase shift range in, it can be achieved that the low differential loss height of totally 64 kinds of states moves
The amount of phase shift of phase precision.Using the circuit structure, phase shifter interpolar matching not only can be improved, and phase shift essence can be effectively improved
Degree.In general, the phase-shift states matching of big phase is general poor, and phase shifting accuracy is poor, if two big jayrator directly cascades,
The matching that will lead between the two is excessively poor, but the matching of small phase-shift states is generally preferable, so small jayrator is inserted into big
Its matching degree can be improved between jayrator, while alleviating phase shifting accuracy, improve whole phase shifting accuracy.
Preferably, 180 ° of phase-shift circuits are above-mentioned cascade input terminal.Using 180 ° of phase-shift circuits as cascade
Input terminal can enhance the 1dB output power of phase shifter.180 ° of maximum phases as 6 bit digital phase shifters, individual 1dB are defeated
Power is highest out, and as integrally-built input terminal, 1dB output power can be improved.
Preferably, 22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits, 11.25 ° of phase-shift circuits, 5.625 ° of phase-shift circuits
Successively cascade.It can among 45 ° of the larger phase small phases of insertion compared to cascade system from big to small or from small to large
So that whole obtain higher matching, and reduce Phase-shifting Errors, improves phase shifting accuracy.
Preferably, 5.625 ° of phase-shift circuits include the first field-effect tube, the source electrode of first field-effect tube and
The first inductance is connected between drain electrode.5.625 ° of phase-shift circuits are controlled using single switching transistor, by changing control planning
Phase shift, when the conducting of the first field-effect tube, the first inductance are sufficiently large, entire circuit is considered as a series resistance, therefore electricity
Road phase-shift phase very little, can be used as reference bit, and the insertion loss of circuit is determined by the size of M1.When the first field-effect tube is ended
When, circuit equivalent is capacitor and inductance in parallel, can generate smaller phase under the conditions of guaranteeing standing wave performance and smaller insertion loss
It moves.The not only area of the circuit is small, structure is simple, insertion loss is small, is suitble to broadband application；And its performance is good.Its performance is led well
It is embodied in that phase shifting accuracy is high, insertion loss is small, return loss is small, standing-wave ratio is small.Using this topological jayrator, in 33-37GHz
In frequency range, Phase-shifting Errors are less than 0.6dB, standing wave less than 1.3 less than 0.3 °, Insertion Loss, have in entire broadband very excellent
Different performance.
Preferably, 11.25 ° of phase-shift circuits, 22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits, 90 ° of phase-shift circuits use
π type topological structure, 180 ° of phase-shift circuits use high low pass phase-shift network.11.25 °, 22.5 °, 45 ° with 90 ° due to being small
Phase, although can also reach Phasing using high lowpass structures, occupied area is larger, topological using the π type of deformation,
The area of integrated circuit can be reduced.
Further, the π type topological structure includes the 4th field-effect tube, the 5th field-effect tube, the 4th field-effect
The 4th inductance is connected between the source electrode and drain electrode of pipe, the drain electrode of the 4th field-effect tube passes through the 5th capacitor and the 5th effect
Should the drain electrode of pipe be connected, the source electrode of the 4th field-effect tube is connected by the 6th capacitor with the drain electrode of the 5th field-effect tube, institute
It states the source electrode ground connection of the 5th field-effect tube and drains and be connected with the 5th inductance of ground connection.
Preferably, 180 ° of phase-shift circuits include the 6th effect pipe, the 7th effect pipe, the 8th effect pipe and the 9th effect
Ying Guan, the source electrode of the 6th effect pipe passes sequentially through the 6th inductance, the 7th inductance is connected with the drain electrode of the 7th effect pipe, described
The source electrode of 8th effect pipe passes sequentially through the 7th capacitor, the 8th capacitor is connected with the drain electrode of the 9th effect pipe, the 6th effect
The drain electrode of pipe is connected with the drain electrode of the 8th effect pipe, and the source electrode of the 7th effect pipe is connected with the source electrode of the 9th effect pipe, institute
State the 6th inductance, the common end of the 7th inductance is connected with the 9th capacitor of ground connection, the common end of the 7th capacitor, the 8th capacitor
It is connected with the 8th inductance of ground connection.
Compared with prior art, the present invention having the following advantages and benefits:
1, phase shifter not only can be improved using the higher phase-shift circuit of phase shifter two as the output of phase shifter, output in the present invention
Interpolar matching, and phase shifting accuracy can be effectively improved.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the principle of the present invention block diagram.
Fig. 2 is the circuit diagram of 5.625 ° of phase-shift circuits of the invention.
Fig. 3 is a kind of circuit structure of π type topological structure of the present invention.
Fig. 4 is the circuit structure diagram of 180 ° of phase-shift circuits of the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
Six bit digital phase shifter of one kind as shown in Figure 1, including 5.625 ° of phase-shift circuits, 11.25 ° of phase-shift circuits, 22.5 °
Phase-shift circuit, 45 ° of phase-shift circuits, 90 ° of phase-shift circuits and 180 ° of phase-shift circuits, which is characterized in that 5.625 ° of phase-shift circuits,
11.25 ° of phase-shift circuits, 22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits are associated in 90 ° of phase-shift circuits, 180 ° of phase shifts with random order grade
Between circuit.
Embodiment 2
90 ° of phase-shift circuits, 180 ° of phase-shift circuits can be used as the input terminal of this digital phase shifter, and 5.625 ° of phase shift electricity
Road, 11.25 ° of phase-shift circuits, 22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits are cascaded with random order, for example, can be by from small to large
Sequence, can also also can be out of order arrangement by sequence from big to small, still, in order to enhance the EDB output power of phase shifter, will
Input terminal of 180 ° of phase-shift circuits as this digital phase shifter, and 22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits, 11.25 ° of phase shift electricity
Road, 5.625 ° of phase-shift circuits successively cascade.
Using the circuit of the structure, it can effectively improve and improve phase shifter interpolar matching, and phase shift essence can be effectively improved
Degree.
Embodiment 3
In the principle of above structure, the present embodiment discloses a detailed embodiment.
As shown in Fig. 2, 5.625 ° of phase-shift circuits include the first field-effect tube M1, the source of the first field-effect tube M1
The first inductance L1 is connected between pole and drain electrode.5.625 ° of phase-shift circuits are controlled using single switching transistor, are controlled by changing
Relationship phase shift processed, when the conducting of the first field-effect tube, the first inductance are sufficiently large, entire circuit is considered as a series resistance,
Therefore circuit phase shift amount very little, can be used as reference bit, the insertion loss of circuit is determined by the size of M1.When the first field-effect tube
When cut-off, circuit equivalent is capacitor and inductance in parallel, can be generated smaller under the conditions of guaranteeing standing wave performance and smaller insertion loss
Phase shift.The not only area of the circuit is small, structure is simple, insertion loss is small, is suitble to broadband application；And its performance is good.Its performance is good
It is mainly reflected in that phase shifting accuracy is high, insertion loss is small, return loss is small, standing-wave ratio is small.Using this topological jayrator, in 33-
In 37GHz frequency range, Phase-shifting Errors are less than 0.6dB, standing wave less than 1.3 less than 0.3 °, Insertion Loss, have in entire broadband non-
The performance of Chang Youyi.
11.25 ° of phase-shift circuits, 22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits, 90 ° of phase-shift circuits use π type topological structure,
180 ° of phase-shift circuits use high low pass phase-shift network.
π type topological structure can be used such as flowering structure: including the second field-effect tube M2, third field-effect tube M3, described second
The second inductance L2 is connected between the source electrode and drain electrode of field-effect tube, the drain electrode of the second field-effect tube M2 passes sequentially through first
Capacitor C1, the second capacitor C2 are connected with the drain electrode of third field-effect tube M3, and the source electrode of the second field-effect tube M2 passes sequentially through
Third capacitor C3, the 4th capacitor C4 are connected with the drain electrode of third field-effect tube M3, the source electrode ground connection of the third field-effect tube M3
And drain electrode is connected with the third inductance L3 of ground connection.Specifically, 11.25 ° of phase-shift circuits, 22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits,
90 ° of phase-shift circuits use the π type topological structure.Using the phase-shift circuit of the structure, the amount of shifting to is little, is also suitble to using height
Open network realizes that advantage is also that chip area is small, Insertion Loss is small.When the second field-effect tube M2 shutdown, third field-effect tube M3
When opening, circuit equivalent position low pass pin network generates phase delay, when the second field-effect tube M2 is opened, third field-effect tube M3
When shutdown, third inductance L3 is in parallel with the capacitor of third field-effect tube M3 in circuit, the second inductance L2 and first capacitor C1, second
A mid-shunt of capacitor C2 generates phase shift under two states, meanwhile, third inductance L3 accesses net by third field-effect tube M3
Network and the second field-effect tube M2, third field-effect tube M3-play the Insertion Loss fluctuation in adjustable entire broadband.Third inductance L3
There is a circuit to ground, low side Insertion Loss is larger when will cause low pass state, solves this problem and only increases inductance value, but increases
Big inductance value can make standing wave be deteriorated, while phase shift fluctuation increases, therefore need to comprehensively consider the suitable inductance value of selection.In addition, by
In using IBM 0.13um BiCMOS technique, without small capacitances, so under 11.25 ° of states with two capacitor parallel connections come
Increase capacitance.For example, using this topology, in 33-37GHz frequency range, 11.25 ° of Phase-shifting Errors less than 0.3 °, Insertion Loss it is small
It is better than 1.3 in 1.2dB, standing wave；22.5 ° of Phase-shifting Errors are less than 1.3dB less than 1.2 °, Insertion Loss, standing wave is better than 1.5；45 ° of phase shifts miss
Difference is less than 2dB less than 1.2 °, Insertion Loss, standing wave is better than 1.5；90 ° of Phase-shifting Errors are less than 4dB less than 2 °, Insertion Loss, standing wave is better than 1.6.
Another circuit structure can also be used in π type topological structure as shown in Figure 3 comprising the 4th field-effect tube M4, the 5th
Field-effect tube M5 is connected with the 4th inductance L4, the 4th field-effect between the source electrode and drain electrode of the 4th field-effect tube M4
The drain electrode of pipe M4 is connected by the 5th capacitor C5 with the drain electrode of the 5th field-effect tube, and the source electrode of the 4th field-effect tube successively leads to
It crosses the 6th capacitor C6 to be connected with the drain electrode of the 5th field-effect tube M5, the source electrode of the 5th field-effect tube is grounded and drain electrode is connected with
5th inductance L5 of ground connection.Specifically, 180 ° of phase-shift circuits use the π type topological structure.Its principle and a kind of upper circuit theory
It is identical.
As shown in figure 4,180 ° of phase-shift circuits include the 6th effect pipe M6, the 7th effect pipe M7, the 8th effect pipe M8
With the 9th effect pipe M9, the source electrode of the 6th effect pipe passes sequentially through the 6th inductance L6, the 7th inductance L7 and the 7th effect pipe
The drain electrode of M7 is connected, and the source electrode of the 8th effect pipe M8 passes sequentially through the 7th capacitor C7, the 8th capacitor C8 and the 9th effect pipe
Drain electrode be connected, the drain electrode of the 6th effect pipe is connected with the drain electrode of the 8th effect pipe, the source electrode of the 7th effect pipe and
The source electrode of 9th effect pipe is connected, the 6th inductance, the 7th inductance common end be connected with the 9th capacitor C9 of ground connection, it is described
7th capacitor, the 8th capacitor common end be connected with the 8th inductance L8 of ground connection.Transmission line is replaced using phase-shift network, works as letter
When number from network switching, different phases is obtained, to obtain phase shift, major advantage is to design phase varying with frequency
It moves, wider frequency band and preferable frequency response can be obtained, 4 metal-oxide-semiconductors are selected not as switch by switching on-off
With path realize the purpose of phase shift.Using 180 ° of phase shifts of this structure, lesser Phase-shifting Errors may be implemented.It illustrates
It is bright, using this topology, in 33-376GHz frequency range, 180 ° of jayrator Phase-shifting Errors less than 2.5 °, that Insertion Loss is less than 5dB, standing wave is excellent
In 1.5.
Above-mentioned 5.625 ° of phase-shift circuits, 11.25 ° of phase-shift circuits, 22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits, 90 ° of phase shifts
Independent voltage control is respectively adopted in circuit and 180 ° of phase-shift circuits.
Using the digital phase shifter of the present embodiment, matching degree can be increased to -10db to -12db, and existing phase shift
Its matching degree of device reaches as high as -8db, i.e. this programme matching degree for being greatly improved phase shifter.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of six bit digital phase shifters, including 5.625 ° of phase-shift circuits, 11.25 ° of phase-shift circuits, 22.5 ° of phase-shift circuits, 45 °
Phase-shift circuit, 90 ° of phase-shift circuits and 180 ° of phase-shift circuits, which is characterized in that 5.625 ° of phase-shift circuits, 11.25 ° of phase shift electricity
Road, 22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits are associated between 90 ° of phase-shift circuits, 180 ° of phase-shift circuits with random order grade.
2. a kind of six bit digitals phase shifter according to claim 1, which is characterized in that 180 ° of phase-shift circuits are above-mentioned
Cascade input terminal.
3. a kind of six bit digitals phase shifter according to claim 1, which is characterized in that 22.5 ° of phase-shift circuits, 45 °
Phase-shift circuit, 11.25 ° of phase-shift circuits, 5.625 ° of phase-shift circuits successively cascade.
4. a kind of six bit digitals phase shifter according to claim 1, which is characterized in that 5.625 ° of phase-shift circuits include
First field-effect tube is connected with the first inductance between the source electrode and drain electrode of first field-effect tube.
5. a kind of six bit digitals phase shifter according to claim 1, which is characterized in that 11.25 ° of phase-shift circuits,
22.5 ° of phase-shift circuits, 45 ° of phase-shift circuits, 90 ° of phase-shift circuits use π type topological structure, and 180 ° of phase-shift circuits are using height
Logical phase-shift network.
6. a kind of six bit digitals phase shifter according to claim 5, which is characterized in that the π type topological structure includes the
Four field-effect tube, the 5th field-effect tube, are connected with the 4th inductance between the source electrode and drain electrode of the 4th field-effect tube, and described
The drain electrode of four field-effect tube is connected by the 5th capacitor with the drain electrode of the 5th field-effect tube, and the source electrode of the 4th field-effect tube is logical
It crosses the 6th capacitor to be connected with the drain electrode of the 5th field-effect tube, the source electrode of the 5th field-effect tube is grounded and drain electrode is connected with ground connection
The 5th inductance.
7. a kind of six bit digitals phase shifter according to claim 1, which is characterized in that 180 ° of phase-shift circuits include the
Six effect pipes, the 7th effect pipe, the 8th effect pipe and the 9th effect pipe, the source electrode of the 6th effect pipe pass sequentially through the 6th electricity
Sense, the 7th inductance are connected with the drain electrode of the 7th effect pipe, and the source electrode of the 8th effect pipe passes sequentially through the 7th capacitor, the 8th electricity
Appearance is connected with the drain electrode of the 9th effect pipe, and the drain electrode of the 6th effect pipe is connected with the drain electrode of the 8th effect pipe, and the described 7th
The source electrode of effect pipe is connected with the source electrode of the 9th effect pipe, the 6th inductance, the 7th inductance common end be connected with ground connection
9th capacitor, the 7th capacitor, the 8th capacitor common end be connected with the 8th inductance of ground connection.
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| CN201710980934X | 2017-10-20 | ||
| CN201710980934.XA CN107681992A (en) | 2017-10-20 | 2017-10-20 | A kind of six bit digital phase shifters |
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| CN201811069489.2A Pending CN109194303A (en) | 2017-10-20 | 2018-09-13 | A kind of six bit digital phase shifters |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109616723B (en) * | 2018-12-19 | 2021-07-13 | 上海秦芯信息科技有限公司 | High-precision phase shifter applied to 5G millimeter wave base station |
| CN111384477B (en) * | 2018-12-27 | 2022-05-10 | 财团法人工业技术研究院 | Broadband phase shifter and phase array module using same |
| CN109617536A (en) * | 2018-12-27 | 2019-04-12 | 复旦大学 | A kind of X-band phase shifter |
| CN110854482A (en) * | 2019-11-22 | 2020-02-28 | 南京汇君半导体科技有限公司 | High-frequency switch type phase shifter |
| CN110912533A (en) * | 2019-12-12 | 2020-03-24 | 重庆西南集成电路设计有限责任公司 | 360-degree range step-by-step combined radio frequency phase adjusting circuit |
| CN113162581B (en) * | 2021-03-22 | 2022-08-05 | 中国电子科技集团公司第十三研究所 | Broadband digital phase shifter based on GaN HEMT device |
| CN115622532B (en) * | 2022-12-16 | 2023-03-21 | 天津中科海高微波技术有限公司 | Numerical control phase shifting circuit of ultra-wideband phased array radar |
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| US20080186108A1 (en) * | 2007-02-02 | 2008-08-07 | Nec Electronics Corporation | Bit phase shifter |
| CN102148416A (en) * | 2010-11-24 | 2011-08-10 | 南京理工大学 | Microwave and millimeter wave ultra wide band six-bit microwave monolithic integrated circuit (MMIC) digital phase shifter |
| CN202839906U (en) * | 2012-09-26 | 2013-03-27 | 成都嘉纳海威科技有限责任公司 | Microwave single-chip microcomputer numerical control phase shifter |
| JP2014110631A (en) * | 2012-12-03 | 2014-06-12 | Electronics And Telecommunications Research Institute | Transmission/reception beam formation device for active phased-array antenna |
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