CN102594285A - Radio frequency series connection voltage distribution type digital/ analog compatible phase shifter - Google Patents
Radio frequency series connection voltage distribution type digital/ analog compatible phase shifter Download PDFInfo
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- CN102594285A CN102594285A CN2012100780860A CN201210078086A CN102594285A CN 102594285 A CN102594285 A CN 102594285A CN 2012100780860 A CN2012100780860 A CN 2012100780860A CN 201210078086 A CN201210078086 A CN 201210078086A CN 102594285 A CN102594285 A CN 102594285A
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Abstract
The invention discloses a radio frequency series connection voltage distribution type digital/ analog compatible phase shifter, which is formed by two unit circuits. One unit circuit is a reflection type digital analog compatible phase shifting circuit and forms 0-360 degrees of phase change, and the other unit circuit is a series connection voltage distribution digital/ analog control conversion circuit and forms digital/ analog compatible control of phase of the phase shifting circuit. The reflection type digital analog compatible phase shifting circuit and the series connection voltage distribution digital/ analog control conversion circuit form the radio frequency series connection voltage distribution type digital/ analog compatible phase shifter. The radio frequency series connection voltage distribution type digital/ analog compatible phase shifter is simple in circuit topology and design process, simple in manufacture process, high in yield, small in chip area, low in insertion consumption, high in phase shifting accuracy, fine in phase shifting stepping, low in input and output voltage standing wave ratio and small in insertion consumption difference of each phase state.
Description
Technical field
The invention belongs to the electronic unit in the electronic system equipment such as being applied in phased array radar, digital microwave telecommunication, mobile communication, antenna system, electronic countermeasures, guidance and instrument, particularly a kind of radio frequency series connection partial pressure type digital-to-analog compatible phase shifter.
Background technology
In the control circuit of the radio frequency in electronic system equipment such as communication, phased array radar, electronic countermeasures, guidance and instrument, digital-to-analog phase shifter integrated circuit is one of radio frequency major control circuit.The key technical indexes of this digital-to-analog phase shifter integrated circuit has: (1) operational frequency bandwidth; (2) phase shift figure place; (3) phase-shift phase; (4) phase shift precision; (5) phase change is with the linearity of control change in voltage; (6) insert loss; (7) each attitude is inserted loss difference; (8) each attitude input and output side voltage standing wave ratio; (9) switching speed; (10) circuit size; (11) 1 decibel of compression of power output level; (12) consistency of electrical property between circuit.The like product of existing radio-frequency phase shifter integrated circuit, because the defective of the realization phase-shift circuit scheme that design is adopted, electrical performance indexes is all relatively poor usually.For example: conventional microwave five digit number phase shifter adopts five kinds of different circuits to be connected in series formation each other, so its major defect has: (1) circuit topology is complicated, and each will adopt different circuit to realize; (2) design difficulty is big; (3) the processes difficulty is big; (4) phase shift precision is low; (5) circuit loss of long number phase-shifter is big; (6) input and output side voltage standing wave(VSW) ratio; (7) operational frequency bandwidth is narrower; (8) rate of finished products is low; (9) influenced by process control parameter, electrical property consistency is relatively poor between circuit; (10) circuit size is bigger.
Summary of the invention
The object of the present invention is to provide a kind of circuit topological structure to reduce circuit simply, significantly inserts loss, reduces chip area, improves rate of finished products, reduces cost and have numeral and the compatible radio-frequency phase shifter of simulation control.
The technical solution that realizes the object of the invention is: a kind of radio frequency series connection partial pressure type digital-to-analog compatible phase shifter.It is made up of two element circuits, and an element circuit is a reflection-type digital analog compatible phase-shift circuit, and constitutes the phase change with 0～360 degree; Another element circuit constitutes the compatible control of the digital-to-analog of phase-shift circuit phase place for series connection partial pressure type digital-to-analog control transformation circuit; Reflection-type digital-to-analog phase shifter circuit constitutes radio frequency series connection partial pressure type digital-to-analog compatible phase shifter with series connection partial pressure type digital-to-analog control transformation circuit.This RF digital/analog phase shifter circuit comprises first signal input part, first signal output part and first signal input end, and this first signal input part and first signal output part constitute the signal input part and the signal output part of element circuit respectively; Described digital-to-analog control transformation circuit is made up of signal input end, divider resistance, controlling filed effect transistor and biasing resistor; Wherein the points of common connection of the 0th divider resistance and first divider resistance constitutes digital-to-analog control transformation circuit control signal output part; Connect with the 0th divider resistance after described divider resistance is connected between source electrode and the drain electrode of controlling filed effect transistor constitutes the controlled potential-divider network of electricity accent again, and this digital-to-analog control transformation circuit control signal output part is connected with described RF digital/analog phase shifter circuit control signal input part; In the RF digital of said element circuit/analog phase shifter circuit; Signal input part connects an end of first microstrip line; The other end of this first microstrip line connects No. 1 port of first circulator; Signal is by No. 2 ports of unidirectional inflow first circulator of No. 1 port of first circulator, and No. 2 ports of first circulator connect an end of the 3rd microstrip line, and the other end of the 3rd microstrip line connects the drain electrode of an end and the 0th FET of first resistance respectively; One end of another termination first electric capacity of this first resistance; The other end ground connection of this first electric capacity, the source electrode of described first FET connect an end of second resistance and an end of second electric capacity, the other end ground connection of the other end of this second resistance and second electric capacity respectively; The grid of the 0th FET connects an end of the 3rd resistance, and the other end of the 3rd resistance is RF digital/analog phase shifter circuit control signal input part; This signal input end connects the control signal output ends in the digital-to-analog control transformation circuit; Signal input end connects an end of the 0th divider resistance; One end of the 0th divider resistance also joins with the source electrode of first field-effect transistor and an end of first divider resistance; The other end of the 0th divider resistance connects C0 control signal end; The grid of this first field-effect transistor connects an end of second biasing resistor; The other end of this second biasing resistor connects the C1 signal input end; The other end of the source electrode of described first field-effect transistor and first divider resistance is connected the drain electrode of second field-effect transistor and an end of the 3rd divider resistance, and the grid of this second field-effect transistor connects an end of the 4th biasing resistor, and the other end of the 4th biasing resistor connects the C2 signal input end; The other end of the source electrode of this second field-effect transistor and the 3rd divider resistance is connected the drain electrode of next stage field-effect transistor and an end of the divider resistance of correspondence; And the like, the drain electrode of n field-effect transistor is connected the corresponding end of source electrode with the corresponding divider resistance of upper level field-effect transistor with an end of 2n-1 divider resistance, and the grid of this n field-effect transistor connects an end of 2n biasing resistor; The other end of this 2n biasing resistor connects the Cn signal input end, the source electrode of this n field-effect transistor and the other end ground connection of 2n-1 divider resistance.The signal that flows into No. 2 ports of first circulator reflexes to No. 2 ports of first circulator through former road behind this branch road; The signal that reflects flows into No. 3 port output through first circulator is unidirectional by No. 2 ports; No. 3 ports of first circulator are connected with an end of second microstrip line; The other end of second microstrip line produces the certain phase shift amount from first output port output of microwave signal.
The present invention compared with prior art; Its remarkable advantage has: (1) circuit design is simple; Realize continuously changing or step-by-step system changes and is added to the control voltage on the control device through digital analog compatible control transformation circuit; The electrical quantity that makes control device is with the control change in voltage, thus the phase place that realizes the reflection-type phase-shift circuit in 360 degree scopes continuously or stepping change fast; (2) numeral is compatible with simulation control; (3) its insertion loss of general long number phase shifter is long number phase-shift circuit sum, because the present invention has only an element circuit, so the insertion loss is little; (4) each attitude insertion loss difference is little; (5) chip area is little; (6) owing to adopt digital analog compatible control transformation circuit, not only realize digital analog compatible, guarantee the switching speed that each digital phase shift attitude is changed each other simultaneously, and with the GaAs single-chip ic process compatibility, critical technological point is few in the manufacturing; (7) rate of finished products is high, and cost is low; (8) chip chamber electrical property batch high conformity.
Description of drawings
Fig. 1 is the circuit block diagram of radio frequency series connection partial pressure type digital-to-analog compatible phase shifter circuit of the present invention.
Fig. 2 is the electrical schematic diagram of radio frequency series connection partial pressure type digital-to-analog compatible phase shifter circuit of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail.
In conjunction with Fig. 1, Fig. 2, radio frequency series connection partial pressure type digital-to-analog compatible phase shifter of the present invention is made up of an element circuit, and this element circuit is the phase-shift circuit of reflection-type digital analog compatible, and constitutes the phase change with 0～360 degree; Described element circuit is connected to form by RF digital/analog phase shifter circuit and digital-to-analog control transformation circuit; This RF digital/analog phase shifter circuit comprises the first signal input part INPUT, the first signal output part OUTPUT and the first signal input end P, and this first signal input part and first signal output part constitute the signal input part and the signal output part of element circuit respectively; Described digital-to-analog control transformation circuit by signal input end VC0, VC1, VC2 ..., VCn, divider resistance r0, r1, r3 ..., r (2n-1), controlling filed effect transistor f1, f2 ... fn and biasing resistor r2, r4......, r (2n) constitute; Wherein the points of common connection P of the 0th divider resistance r0 and the first divider resistance r1 constitutes digital-to-analog control transformation circuit control signal output part; Described divider resistance r1, r3 ..., r (2n-1) be connected to controlling filed effect transistor f1, f2 ..., fn source electrode and drain electrode between after connect with the 0th divider resistance r0 again and constitutes the controlled potential-divider network of electricity accent, this digital-to-analog control transformation circuit control signal output part is connected with described RF digital/analog phase shifter circuit control signal input part; The signal input end VC0 of described element circuit, VC1, VC2 ..., the external control signal of VCn, the number of control port is 1,2 ... n, n are the figure place of digital phase shift control, choose as required usually.During the digital phase shift attitude; When signal input end VC0, VC1, VC2 ..., when VCn all connects the field-effect transistor pinch-off voltage; Be made as reference state; VC0 connects pinch-off voltage when the C0 signal input end, other signal input end VC1, VC2 ..., VCn respectively or combination then be different digital phase shift attitudes when adding conducting voltage (zero volt); During simulation phase shift attitude; Other signal input end VC1, VC2 ..., VCn all connects the field-effect transistor pinch-off voltage; The control signal of C0 signal input end VC0 (lie prostrate field-effect transistor pinch-off voltage value from zero, or from field-effect transistor pinch-off voltage value to zero volt) in given range changes then corresponding simulation phase shift attitude continuously.
In conjunction with Fig. 2; For realizing radio frequency series connection partial pressure type digital-to-analog compatible phase shifter of the present invention; Being constructed as follows of the RF digital of said units circuit/analog phase shifter circuit and digital-to-analog control transformation circuit: the first signal input part INPUT connects the end of the first microstrip line M1; The other end of this first microstrip line M1 connects No. 1 port of the first circulator B1; Signal is by No. 2 ports of the unidirectional inflow first circulator B1 of No. 1 port of the first circulator B1, and No. 2 ports of the first circulator B1 connect the end of the 3rd microstrip line M3, and the other end of the 3rd microstrip line M3 connects the drain electrode of an end and the 0th FET F1 of first resistance R 1 respectively; One end of another termination first capacitor C 1 of this first resistance R 1; The other end ground connection of this first capacitor C 1, the source electrode of the described first FET F1 connect an end of second resistance R 2 and an end of second capacitor C 2, the other end ground connection of the other end of this second resistance R 2 and second capacitor C 2 respectively; The grid of the 0th FET F1 connects an end of the 3rd resistance R 3, and the other end of the 3rd resistance R 3 is the first signal input end P of RF digital/analog phase shifter circuit; This first signal input end P connects the control signal output ends in the digital-to-analog control transformation circuit; The first signal input end P connects the end of the 0th divider resistance r0; The end of the 0th divider resistance r0 also joins with the source electrode of the first field-effect transistor f1 and the end of the first divider resistance r1; The other end of the 0th divider resistance r0 connects C0 control signal end VC0; The grid of this first field-effect transistor f1 connects the end of the second biasing resistor r2; The other end of this second biasing resistor r2 connects C1 signal input end VC1; The other end of the source electrode of the described first field-effect transistor f1 and the first divider resistance r1 is connected the drain electrode of the second field-effect transistor f2 and the end of the 3rd divider resistance r3; The grid of this second field-effect transistor f2 connects the end of the 4th biasing resistor r4; The other end of the 4th biasing resistor r4 connects C2 signal input end VC2, and the source electrode of this second field-effect transistor f2 and the other end of the 3rd divider resistance r3 are connected the drain electrode of next stage field-effect transistor and an end of the divider resistance of correspondence, and the like; The end of the drain electrode of n field-effect transistor fn and 2n-1 divider resistance r (2n-1) is connected the corresponding end of source electrode with the corresponding divider resistance of upper level field-effect transistor; The grid of this n field-effect transistor fn connects the end of 2n biasing resistor r2n, and the other end of this 2n biasing resistor r2n connects Cn signal input end VCn, the other end ground connection of the source electrode of this n field-effect transistor fn and 2n-1 divider resistance r (2n-1).The signal that flows into No. 2 ports of the first circulator B1 reflexes to No. 2 ports of the first circulator B1 through former road behind this branch road; The signal that reflects flows into No. 3 port output through the first circulator B1 is unidirectional by No. 2 ports; No. 3 ports of the first circulator B1 are connected with the end of the second microstrip line M2; The other end of the second microstrip line M2 produces the certain phase shift amount from the first signal output port OUTPUT output of microwave signal.In element circuit,, just can realize the phase change of 0～360 degree as long as regulate each microstrip line, electric capacity and transistorized value.For ease of describing; This part the concrete signal input end VC0 of narration, VC1, VC2 ..., VCn; Divider resistance r0, r1, r3 ..., r (2n-1); Controlling filed effect transistor f1, f2 ... adopt when fn and biasing resistor r2, r4......, r (2n) corresponding with its numbering, like biasing resistor r
4Be the 4th biasing resistor, second biasing resistor indicate and not should be in order.
In sum; The course of work of radio frequency series connection partial pressure type digital-to-analog compatible phase shifter of the present invention is following: radio-frequency input signals is imported from the first signal input part INPUT; When signal input end VC0 control signal from zero volt voltage when the pinch-off voltage of field-effect transistor changes continuously, or change continuously to zero volt voltage from the pinch-off voltage of field-effect transistor, this moment each digital phase shift position other signal input end VC1, VC2 ..., the control signal of VCn is pinch-off voltage; The circuit parameter of corresponding field-effect transistor takes place to change continuously; The corresponding different impedance value of circuit, signal is exported from output port OUTPUT through branch road, then corresponding different phase shift attitude; Corresponding signal phase changes in 360 degree scopes continuously, the corresponding simulation of this state phase shift attitude; During the digital phase shift attitude; When signal input end VC0, VC1, VC2 ..., the VCn control signal is made as reference state when all connecing the field-effect transistor pinch-off voltage; Digital phase shift when control VC0 connects the field-effect transistor pinch-off voltage, VC1, VC2 ..., VCn respectively or combination when adding conducting voltage, corresponding Different control voltage; The corresponding different impedance value of circuit; From output port OUTPUT output, then corresponding different digital phase shift attitude so just can realize radio frequency series connection partial pressure type digital-to-analog phase shifter to signal easily through branch road.
Claims (1)
1. radio frequency series connection partial pressure type digital-to-analog compatible phase shifter, it is characterized in that: it is made up of an element circuit, and this element circuit is the compatible phase-shift circuit of reflection-type digital-to-analog, and constitutes the phase change with 0～360 degree; Described element circuit is connected to form by RF digital/simulation compatible phase shifter circuit and digital-to-analog control transformation circuit; This RF digital/analog phase shifter circuit comprises first signal input part (INPUT), first signal output part (OUTPUT) and first signal input end (P), and this first signal input part and first signal output part constitute the signal input part and the signal output part of element circuit respectively; Described digital-to-analog control transformation circuit by signal input end (VC0), (VC1), (VC2) ..., (VCn), divider resistance (r0), (r1), (r3) ..., (r (2n-1)), controlling filed effect transistor (f1), (f2) ... (fn) and biasing resistor (r2), (r4) ..., (r (2n)) constitute; Wherein the points of common connection P of the 0th divider resistance (r0) and first divider resistance (r1) constitutes digital-to-analog control transformation circuit control signal output part; Described divider resistance (r1), (r3) ..., (r (2n-1)) be connected to controlling filed effect transistor (f1), (f2) ..., (fn) source electrode and drain electrode between after connect with the 0th divider resistance (r0) again and constitutes the controlled potential-divider network of electricity accent, this digital-to-analog control transformation circuit control signal output part is connected with described RF digital/analog phase shifter circuit control signal input part; In the RF digital of said element circuit/analog phase shifter circuit; Signal input part connects an end of first microstrip line (M1); The other end of this first microstrip line (M1) connects No. 1 port of first circulator (B1); Signal is by No. 2 ports of unidirectional inflow first circulator of No. 1 port (B1) of first circulator (B1); No. 2 ports of first circulator (B1) connect an end of the 3rd microstrip line (M3); The other end of the 3rd microstrip line (M3) connects the drain electrode of an end and the 0th FET (F1) of first resistance (R1), an end of another termination first electric capacity (C1) of this first resistance (R1), the other end ground connection of this first electric capacity (C1) respectively; The source electrode of described first FET (F1) connects an end of second resistance (R2) and an end of second electric capacity (C2) respectively; The other end ground connection of the other end of this second resistance (R2) and second electric capacity (C2), the grid of the 0th FET (F1) connects an end of the 3rd resistance (R3), and the other end of the 3rd resistance (R3) is first signal input end (P) of RF digital/analog phase shifter circuit; This first signal input end (P) connects the control signal output ends in the digital-to-analog control transformation circuit; First signal input end (P) connects an end of the 0th divider resistance (r0); One end of the 0th divider resistance (r0) also joins with the source electrode of first field-effect transistor (f1) and an end of first divider resistance (r1); The other end of the 0th divider resistance (r0) connects C0 control signal end (VC0); The grid of this first field-effect transistor (f1) connects an end of second biasing resistor (r2); The other end of this second biasing resistor (r2) connects C1 signal input end (VC1); The other end of the source electrode of described first field-effect transistor (f1) and first divider resistance (r1) is connected the drain electrode of second field-effect transistor (f2) and an end of the 3rd divider resistance (r3); The grid of this second field-effect transistor (f2) connects an end of the 4th biasing resistor (r4); The other end of the 4th biasing resistor (r4) connects C2 signal input end (VC2); The other end of the source electrode of this second field-effect transistor (f2) and the 3rd divider resistance (r3) is connected the drain electrode of next stage field-effect transistor and an end of the divider resistance of correspondence; And the like, an end of the drain electrode of n field-effect transistor (fn) and 2n-1 divider resistance (r (2n-1)) is connected the corresponding end of source electrode with the corresponding divider resistance of upper level field-effect transistor, and the grid of this n field-effect transistor (fn) connects an end of 2n biasing resistor (r2n); The other end of this 2n biasing resistor (r2n) connects Cn signal input end (VCn), the other end ground connection of the source electrode of this n field-effect transistor (fn) and 2n-1 divider resistance (r (2n-1)); The signal that flows into No. 2 ports of first circulator (B1) reflexes to No. 2 ports of first circulator (B1) through former road behind this branch road; The signal that reflects flows into No. 3 port output through first circulator (B1) is unidirectional by No. 2 ports; No. 3 ports of first circulator (B1) are connected with an end of second microstrip line (M2); The other end of second microstrip line (M2) produces phase-shift phase from first output port (OUTPUT) output of radiofrequency signal.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152004A (en) * | 2013-02-05 | 2013-06-12 | 江苏万邦微电子有限公司 | Microwave and millimeter-wave parallel voltage division digital/analog compatible phase shifter |
| CN109687839A (en) * | 2018-12-17 | 2019-04-26 | 中国电子科技集团公司第五十五研究所 | Active passive mixed type microwave phase shifter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101102162A (en) * | 2006-07-07 | 2008-01-09 | 北京航空航天大学 | Full light regeneration method of optical four-phase shift key control signals |
| CN101192819A (en) * | 2006-11-29 | 2008-06-04 | 南京理工大学 | Micro-wave mm wave broadband and low consumption digital analog compatible phase shifter |
| US20080180297A1 (en) * | 2006-06-28 | 2008-07-31 | Kabushiki Kaisha Toshiba | A/d converter, signal processor, and receiving device |
-
2012
- 2012-03-22 CN CN2012100780860A patent/CN102594285A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080180297A1 (en) * | 2006-06-28 | 2008-07-31 | Kabushiki Kaisha Toshiba | A/d converter, signal processor, and receiving device |
| CN101102162A (en) * | 2006-07-07 | 2008-01-09 | 北京航空航天大学 | Full light regeneration method of optical four-phase shift key control signals |
| CN101192819A (en) * | 2006-11-29 | 2008-06-04 | 南京理工大学 | Micro-wave mm wave broadband and low consumption digital analog compatible phase shifter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152004A (en) * | 2013-02-05 | 2013-06-12 | 江苏万邦微电子有限公司 | Microwave and millimeter-wave parallel voltage division digital/analog compatible phase shifter |
| CN109687839A (en) * | 2018-12-17 | 2019-04-26 | 中国电子科技集团公司第五十五研究所 | Active passive mixed type microwave phase shifter |
| CN109687839B (en) * | 2018-12-17 | 2022-08-19 | 中国电子科技集团公司第五十五研究所 | Active and passive mixed microwave phase shifter |
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Application publication date: 20120718 |