CN117081545B - Ultra-wideband digital phase shifter - Google Patents
Ultra-wideband digital phase shifter Download PDFInfo
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/08—Networks for phase shifting
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/017545—Coupling arrangements; Impedance matching circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits
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Abstract
The invention discloses an ultra-wideband digital phase shifter, which comprises a phase shifting circuit module and a control circuit module; the phase-shifting circuit module comprises a radio frequency signal input end, a radio frequency signal output end, an input signal path switch selection circuit, an output signal path switch selection circuit, a reference signal path and a phase-shifting signal path; the control circuit module is connected with the input signal path switch selection circuit and the output signal path switch selection circuit, and is used for selecting and conducting a reference signal path or a phase-shifting signal path by controlling the input signal path switch selection circuit and the output signal path switch selection circuit; the phase-shifting signal path comprises a first odd-even mode compensation circuit, a phase compensation circuit, a folding directional coupler and a second odd-even mode compensation circuit; the reference signal path comprises a first high frequency compensation circuit, a magnetically coupled full-pass network, and a second high frequency compensation circuit. The invention can expand the bandwidth of the chip and realize high-precision digital phase shift in a wider frequency band on the basis of considering the miniaturization of the chip.
Description
Technical Field
The invention relates to the technical field of millimeter wave signal processing, in particular to an ultra-wideband digital phase shifter.
Background
Phase shifters are an important component of phased arrays and have wide application in radar and satellite communication systems. With the development of ultra-wideband active phased array technology, the requirements on antenna beam control are continuously improved, and the method has important significance and application value on the research of microwave control circuits, particularly high-precision phase shifters.
The phase shifter is used as a typical two-port microwave control circuit and is mainly used for adjusting the phase of microwave signals, and can be classified into a switch line phase shifter, a loading line phase shifter, a reflection type phase shifter and a high-low pass phase shifter according to the common circuit structure, various structures can be selected for cross use according to requirements in circuit design, and in the traditional design, a reflection type structure or a multi-order high-low pass phase shifting structure is generally adopted for a broadband large-phase shifting unit, but the traditional reflection type phase shifter is large in area, is unfavorable for the miniaturization design of a chip, and adopts the high-low pass structure, so that the chip area is large on one hand, the bandwidth is relatively narrow on the other hand, and high-precision phase shifting is difficult to realize in a wider frequency band range.
Disclosure of Invention
The invention aims to provide an ultra-wideband digital phase shifter which can expand the bandwidth of a chip and realize high-precision digital phase shifting in a wider frequency band range on the basis of considering the miniaturization of the chip.
One aspect of the present invention provides an ultra wideband digital phase shifter comprising a phase shifting circuit module and a control circuit module;
the phase-shifting circuit module comprises a radio frequency signal input end, a radio frequency signal output end, an input signal path switch selection circuit, an output signal path switch selection circuit, a reference signal path and a phase-shifting signal path;
the input end of the input signal path switch selection circuit is connected with the radio frequency signal input end, and the output end of the output signal path switch selection circuit is connected with the radio frequency signal output end;
the control circuit module is connected with the input signal path switch selection circuit and the output signal path switch selection circuit, and is used for selecting and conducting the reference signal path or the phase-shifting signal path by controlling the input signal path switch selection circuit and the output signal path switch selection circuit;
the phase-shifting signal path comprises a first odd-even mode compensation circuit, a phase compensation circuit, a folding directional coupler and a second odd-even mode compensation circuit, wherein the first odd-even mode compensation circuit, the phase compensation circuit and the second odd-even mode compensation circuit are connected in series, and the folding directional coupler is connected with the phase compensation circuit in parallel;
the reference signal path comprises a first high-frequency compensation circuit, a magnetic coupling full-pass network and a second high-frequency compensation circuit, wherein the first high-frequency compensation circuit, the magnetic coupling full-pass network and the second high-frequency compensation circuit are connected in series.
Preferably, the input signal path switch selection circuit includes a first switch element, a second switch element, a third switch element, and a fourth switch element;
the input end of the first switching element is connected with the radio frequency signal input end, and the output end of the first switching element is connected with the input end of the third switching element and used as a first output end of the input signal path switching selection circuit;
the input end of the second switching element is connected with the radio frequency signal input end, and the output end of the second switching element is connected with the input end of the fourth switching element and is used as a second output end of the input signal path switch selection circuit;
the output end of the third switching element and the output end of the fourth switching element are singly grounded or connected in parallel.
Preferably, the output signal path switch selection circuit includes a fifth switch element, a sixth switch element, a seventh switch element, an eighth switch element;
the output end of the fifth switching element is connected with the radio frequency signal output end, and the input end of the fifth switching element is connected with the input end of the seventh switching element and used as a first input end of an output signal path switch selection circuit;
the output end of the sixth switching element is connected with the radio frequency signal output end, and the input end of the sixth switching element is connected with the input end of the eighth switching element and used as a second input end of the output signal path switch selection circuit;
the output end of the seventh switching element is singly grounded or connected in parallel with the output end of the eighth switching element.
Preferably, the controlled ends of the first switching element, the fourth switching element, the fifth switching element and the eighth switching element are connected as a first controlled end of the phase shift circuit module;
and the controlled ends of the second switching element, the third switching element, the sixth switching element and the seventh switching element are connected and serve as a second controlled end of the phase shifting circuit module.
Preferably, the folded directional coupler comprises an input port, a coupling port, a pass-through port and an isolation port, the phase compensation circuit comprises a first capacitor, the first odd-even mode compensation circuit comprises a first inductor, and the second odd-even mode compensation circuit comprises a second inductor;
the coupling port and the through port of the folding directional coupler are grounded, the input port of the folding directional coupler is connected with the input end of the first capacitor of the phase compensation circuit, and the isolation port is connected with the output end of the first capacitor of the phase compensation circuit;
the output end of a first inductor of the first odd-even mode compensation circuit is connected with the input port of the folding directional coupler, and the input end of the first inductor is used as the input end of the phase-shifting signal path;
and the input end of a second inductor of the second odd-even mode compensation circuit is connected with the output port of the folding directional coupler, and the output end of the second inductor is used as the output end of the phase-shifting signal path.
Preferably, the magnetically coupled full-pass network includes a fifth inductor, a sixth inductor, a fourth capacitor and a fifth capacitor, where an output end of the fifth inductor is connected with an input end of the sixth inductor to be used as a common port of the magnetically coupled full-pass network, an input end of the fifth inductor is used as an input end of the magnetically coupled full-pass network, and an output end of the sixth inductor is used as an output port of the magnetically coupled full-pass network;
the public port of the magnetic coupling all-pass network is connected with the input end of the fourth capacitor, and the output port of the fourth capacitor is grounded;
the first high-frequency compensation circuit comprises a third inductor and a second capacitor, wherein the output end of the third inductor is connected with the input end of the second capacitor, the output end of the second capacitor is the output end of the first high-frequency compensation network and is connected with the input end of the magnetic coupling full-pass network, and the input end of the third inductor is the input end of the first high-frequency compensation network and is used as the input end of a reference signal path;
the second high-frequency compensation circuit comprises a fourth inductor and a third capacitor, wherein the input end of the fourth inductor is connected with the output end of the third capacitor, the input end of the third capacitor is the input end of the second high-frequency compensation network and is connected with the output end of the magnetic coupling full-pass network, and the output end of the fourth inductor is the output end of the first high-frequency compensation network and is used as the output end of the reference signal path.
Preferably, the control circuit module comprises a first current limiting resistor, a pull-down resistor, a level conversion module and an inverter module;
the level conversion module comprises a first conversion diode Guan and an eighth conversion diode which are sequentially connected in series, wherein the input of the first conversion diode is the input of the level conversion module, the input of the first conversion diode is connected with the output end of the first current limiting resistor, the input end of the first current limiting resistor is a control level input signal, and the output end of the eighth conversion diode is connected with the input end of the pull-down resistor and is used as the output end of the level conversion module;
the inverter module comprises a first inverter to a fifth inverter, the input end of the first inverter is connected with the output end of the level conversion module, and the output end of the first inverter is connected with the input end of the second inverter; the input end of the third inverter is connected with the output end of the second inverter, and the output end of the third inverter is the first level output of the control circuit module; the input end of the fifth inverter is connected with the output end of the fourth inverter, and the output end of the fifth inverter is the second level output of the control circuit module;
the reference voltages of the first inverter to the fifth inverter are connected with each other and the output end of the pull-down resistor.
Preferably, the first to fifth inverters include a ninth switching element, a tenth switching element, and a second current limiting resistor, respectively;
the controlled end of the ninth switching element is the input end of the first to fifth inverters, one end of the ninth switching element is connected with the reference voltage, and the other end of the ninth switching element is connected with the controlled end of the tenth switching element and is used as the output end of the first to fifth inverters; one end of the tenth switching element passes through the second current limiting resistor and is connected with the controlled end, and the other end of the tenth switching element is grounded.
Preferably, the first controlled end of the phase shift circuit module is connected with the first level output of the control circuit module, and the second controlled end of the phase shift circuit module is connected with the second level output of the control circuit module.
The ultra-wideband digital phase shifter of the invention effectively reduces the chip area and greatly meets the requirement of high integration level of the system; meanwhile, in a wider frequency range, the phase shifting precision is effectively improved.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the drawings.
Fig. 1 is a schematic diagram of an ultra wideband digital phase shifter according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a phase shift circuit module according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a control circuit module according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of an inverter according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An embodiment of the present invention provides an ultra wideband digital phase shifter, and fig. 1 is a schematic structural diagram of an ultra wideband digital phase shifter according to an embodiment of the present invention. As shown in fig. 1, the ultra-wideband digital phase shifter according to the embodiment of the present invention includes a phase shift circuit module and a control circuit module.
The phase-shifting circuit module comprises a radio frequency signal input end RFin, a radio frequency signal output end RFout, an input signal path switch selection circuit, an output signal path switch selection circuit, a reference signal path and a phase-shifting signal path;
the input end of the input signal path switch selection circuit is connected with the radio frequency signal input end RFin, and the output end of the output signal path switch selection circuit is connected with the radio frequency signal output end RFout;
the control circuit module is connected with the input signal path switch selection circuit and the output signal path switch selection circuit, and is used for selecting and conducting the reference signal path or the phase-shifting signal path by controlling the input signal path switch selection circuit and the output signal path switch selection circuit;
the phase-shifting signal path comprises a first odd-even mode compensation circuit, a phase compensation circuit, a folding directional coupler and a second odd-even mode compensation circuit, wherein the first odd-even mode compensation circuit, the phase compensation circuit and the second odd-even mode compensation circuit are connected in series, and the folding directional coupler is connected with the phase compensation circuit in parallel;
the reference signal path comprises a first high-frequency compensation circuit, a magnetic coupling full-pass network and a second high-frequency compensation circuit which are connected in series.
The control circuit module is used for controlling the signal paths of the phase shifters in different states. The control circuit module can output 0V or-5V voltage, when the output 0V voltage acts on the input/output signal path switch selection circuit, the reference signal path is conducted, a radio frequency signal enters the phase shifter from the radio frequency signal input end RFin, the signal flows through the input signal path switch selection circuit, the first high frequency compensation circuit, the magnetic coupling full-pass network, the second high frequency compensation circuit and the output signal path switch selection circuit, and the phase shifter is output through the radio frequency output end RFout; when the output-5V voltage acts on the input/output signal path switch selection circuit, the phase-shifting signal path is conducted, the radio frequency signal enters the phase shifter from the radio frequency signal input end RFin, and the signal flows through the input signal path switch selection circuit, the first parity mode compensation circuit, the folding directional coupling circuit, the second parity mode compensation circuit and the output signal path switch selection circuit and is output to the system through the radio frequency output end RFout; by applying different control voltages to the input/output signal path switch selection circuit, a reference signal path or a phase shift signal path is selected to be conducted respectively, and when signals pass through two different paths, certain phase shift is generated, so that the required target phase shift is realized.
In a preferred embodiment, as shown in fig. 2, the input signal path switch selection circuit includes a first switching element M1, a second switching element M2, a third switching element M3, and a fourth switching element M4;
the input end of the first switching element M1 is connected with the radio frequency signal input end RFin, and the output end of the first switching element M1 is connected with the input end of the third switching element M3 and is used as a first output end of an input signal path switch selection circuit;
the input end of the second switching element M2 is connected with the radiofrequency signal input end RFin, and the output end of the second switching element M2 is connected with the input end of the fourth switching element M4 and is used as a second output end of the input signal path switch selection circuit;
the output end of the third switching element M3 is grounded independently or in parallel with the output end of the fourth switching element M4, and the isolation degree of the switch selection circuit of the input signal path is effectively improved through the parallel connection processing of the third switching element M3 and the fourth switching element M4, so that the influence of signal crosstalk on the reference state of the phase shifter or the state of the phase shifter is avoided.
In a preferred embodiment, as shown in fig. 2, the output signal path switch selection circuit includes a fifth switch element M5, a sixth switch element M6, a seventh switch element M7, and an eighth switch element M8;
the output end of the fifth switching element M5 is connected with the radio frequency signal output end RFout, and the input end of the fifth switching element M5 is connected with the input end of the seventh switching element M7 and used as a first input end of an output signal path switch selection circuit;
the output end of the sixth switching element M6 is connected with the radio frequency signal output end RFin, and the input end of the sixth switching element M6 is connected with the input end of the eighth switching element M8 and is used as a second input end of an output signal path switch selection circuit;
the output end of the seventh switching element M7 is individually grounded or connected to the output end of the eighth switching element M8 in parallel, and the isolation degree of the output signal path switch selection circuit is effectively improved through the parallel connection processing of the seventh switching element M7 and the eighth switching element M8, so that the influence of signal crosstalk on the reference state of the phase shifter or the phase shifter state is avoided.
In a preferred embodiment, as shown in fig. 2, the input signal path switch selection circuit and the output signal path switch selection circuit include a first switching element M1, a second switching element M2, a third switching element M3, a fourth switching element M4, a fifth switching element M5, a sixth switching element M6, a seventh switching element M7, and an eighth switching element M8;
the controlled ends of the first switching element M1, the fourth switching element M4, the fifth switching element M5 and the eighth switching element M8 are connected and serve as a first controlled end of the phase shifting circuit module;
the controlled ends of the second switching element M2, the third switching element M3, the sixth switching element M6 and the seventh switching element M7 are connected and serve as a second controlled end of the phase-shifting circuit module, when the acting voltage of the first controlled end is-5V and the acting voltage of the second controlled end is 0V, the reference signal channel is conducted, the phase-shifting signal channel is cut off, and signals flow through the reference signal channel; conversely, the signal flows through the phase-shifted signal path.
In a preferred embodiment, as shown in fig. 2, the phase-shifted signal path includes a first parity mode compensation circuit, a phase compensation circuit, a folded directional coupler, a second parity mode compensation circuit;
the folding directional coupler comprises an input port, a coupling port, a through port and an isolation port, the phase compensation circuit comprises a first capacitor C1, the first odd-even mode compensation circuit comprises a first inductor L1, and the second odd-even mode compensation circuit comprises a second inductor L2;
the coupling port and the through port of the folding directional coupler are grounded, the input port of the folding directional coupler is connected with the input end of the first capacitor C1 of the phase compensation circuit, and the isolation port is connected with the output end of the first capacitor C1 of the phase compensation circuit;
the output end of a first inductor L1 of the first odd-even mode compensation circuit is connected with the input port of the folding directional coupler, and the input end of the first inductor L1 is used as the input end of a phase-shifting signal path;
the input end of a second inductor L2 of the second odd-even mode compensation circuit is connected with the output port of the folding directional coupler, and the output end of the second inductor L2 is used as the output end of the phase-shifting signal path.
The design rule of 1/4 wavelength line is generally adopted in the design of the directional coupler, but the physical size of the low frequency band is larger, the relevant size is reduced to a certain extent in the actual design process, the phase imbalance caused by the size change is compensated by adopting a phase compensation circuit and an odd-even mode compensation circuit in the design of the directional coupler, specifically, the first capacitor C1 of the phase compensation circuit is increased, and the effects of the first inductor L1 of the first odd-even mode compensation circuit and the second inductor L2 of the second odd-even mode compensation circuit are matched, so that the phase precision is effectively improved, and meanwhile, the area of a chip is effectively reduced through the folding treatment of the directional coupler, and the high integration degree and the miniaturized design of the chip are facilitated.
In a preferred embodiment, as shown in fig. 2, the reference signal path includes a first high frequency compensation circuit, a magnetically coupled full-pass network, and a second high frequency compensation circuit;
the magnetic coupling full-pass network comprises an input port, an output port and a public port, wherein the output end of the primary coil fifth inductor L5 is connected with the input end of the secondary coil sixth inductor L6 to form the public port of the magnetic coupling full-pass network, the input end of the primary coil fifth inductor L5 is used as the input end of the magnetic coupling full-pass network, and the output end of the secondary coil sixth inductor L6 is used as the output port of the magnetic coupling full-pass network;
the public port of the magnetic coupling all-pass network is connected with the input end of the fourth capacitor C4, and the output port of the fourth capacitor C4 is directly grounded;
the first high-frequency compensation circuit comprises a third inductor L3 and a second capacitor C2, wherein the output end of the third inductor L3 is connected with the input end of the second capacitor C2, the output end of the second capacitor C2 is the output end of the first high-frequency compensation network and is connected with the input end of the magnetic coupling full-pass network, and the input end of the third inductor L3 is the input end of the first high-frequency compensation network and is also the input end of a reference signal path;
the second high-frequency compensation circuit comprises a fourth inductor L4 and a third capacitor C3, wherein the input end of the fourth inductor L4 is connected with the output end of the third capacitor C3, the input end of the third capacitor C3 is the input end of a second high-frequency compensation network and is connected with the output end of the magnetic coupling full-pass network, and the output end of the fourth inductor L4 is the output end of the first high-frequency compensation network and is also the output end of a reference signal path.
The reference signal path adopts a magnetic coupling full-pass network structure, so that the number of components in the phase shifter is effectively reduced; the high-frequency compensation circuit is adopted in the reference signal path, so that the sideband performance of the broadband phase shifter is effectively improved, the system bandwidth is expanded, and the high-precision phase shift is realized in a wider frequency band range.
The first high-frequency compensation circuit and the second high-frequency compensation circuit which are composed of the second capacitor C2, the third capacitor C3, the third inductor L3 with high Q value and the fourth inductor L4 are connected in series at two ends of the magnetic coupling full-pass network, so that frequency compensation of a high-frequency phase and low parasitic amplitude modulation in a full frequency band can be realized.
In a preferred embodiment, as shown in fig. 3, the control circuit module includes a current limiting resistor R1, a pull-down resistor R2, a level shift module, and an inverter module;
the level conversion module comprises eight conversion diodes, wherein a first conversion diode D1, a second conversion diode D8 and an eighth conversion diode D1 are connected in series, the input of the first conversion diode D1 is the input of the level conversion module and is connected with the output of a first current limiting resistor R1, the input of the first current limiting resistor R1 is a control level input signal Vin, and the output of the eighth conversion diode D8 is connected with the input of a pull-down resistor R2 and is used as the output of the level conversion module;
the inverter module comprises 5 inverters, the input end of a first inverter I1 is connected with the output end of the level conversion module, and the output end of the first inverter I1 is connected with the input end of a second inverter I2; the input end of the third inverter I3 is connected with the output end of the second inverter I2, and the output end of the third inverter I3 is the first level output Vout1 of the control circuit module; the input end of the fourth inverter I4 is connected with the output end of the second inverter I2, the input end of the fifth inverter I5 is connected with the output end of the fourth inverter I4, and the output end of the fifth inverter I5 is the second level output Vout2 of the control circuit module;
the reference voltage VEE of the first inverter I1 to the fifth inverter I5 are connected with each other and are connected with the output end of the pull-down resistor R2, when the control level input signal Vin is 0V, the first level output Vout1 corresponds to the output level of 0V at the moment, the second level output Vout2 corresponds to the output level of-5V at the moment, and at the moment, the reference signal path in the whole phase shifter circuit is conducted; when the control level input signal is 5V, the first level output Vout1 corresponds to the output level of-5V at the moment, and the second level output Vout2 corresponds to the output level of 0V at the moment, and the phase-shifting signal path in the whole phase shifter circuit is conducted.
In a preferred embodiment, as shown in fig. 4, the first to fifth inverters I1 to I5 have the same structure and include a ninth switching element M9, a tenth switching element M10, and a second current limiting resistor R3, respectively;
the controlled end of the ninth switching element M9 is the input end Vin of the inverter, one end of the ninth switching element M9 is connected with the reference voltage VEE, the other end of the ninth switching element M9 is connected with the controlled end of the tenth switching element M10, and the output end Vout of the inverter is also led out from the point; one end of the tenth switching element M10 is connected to the controlled end through the second current limiting resistor R3, and the other end is grounded.
In a preferred embodiment, the first controlled terminal of the phase shift circuit module is connected to the first level output Vout1 of the control circuit module, and the second controlled terminal of the phase shift circuit module is connected to the second level output Vout2 of the control circuit module.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (8)
1. An ultra-wideband digital phase shifter is characterized by comprising a phase shifting circuit module and a control circuit module;
the phase-shifting circuit module comprises a radio frequency signal input end, a radio frequency signal output end, an input signal path switch selection circuit, an output signal path switch selection circuit, a reference signal path and a phase-shifting signal path;
the input end of the input signal path switch selection circuit is connected with the radio frequency signal input end, and the output end of the output signal path switch selection circuit is connected with the radio frequency signal output end;
the control circuit module is connected with the input signal path switch selection circuit and the output signal path switch selection circuit, and is used for selecting and conducting the reference signal path or the phase-shifting signal path by controlling the input signal path switch selection circuit and the output signal path switch selection circuit;
the phase-shifting signal path comprises a first odd-even mode compensation circuit, a phase compensation circuit, a folding directional coupler and a second odd-even mode compensation circuit, wherein the first odd-even mode compensation circuit, the phase compensation circuit and the second odd-even mode compensation circuit are connected in series, and the folding directional coupler is connected with the phase compensation circuit in parallel;
the reference signal path comprises a first high-frequency compensation circuit, a magnetic coupling full-pass network and a second high-frequency compensation circuit, the first high-frequency compensation circuit, the magnetic coupling full-pass network and the second high-frequency compensation circuit are connected in series,
the input signal path switch selection circuit comprises a first switch element, a second switch element, a third switch element and a fourth switch element;
the input end of the first switching element is connected with the radio frequency signal input end, and the output end of the first switching element is connected with the input end of the third switching element and used as a first output end of the input signal path switching selection circuit;
the input end of the second switching element is connected with the radio frequency signal input end, and the output end of the second switching element is connected with the input end of the fourth switching element and is used as a second output end of the input signal path switch selection circuit;
the output end of the third switching element and the output end of the fourth switching element are singly grounded or connected in parallel.
2. The ultra wideband digital phase shifter of claim 1, wherein the output signal path switch selection circuit includes a fifth switching element, a sixth switching element, a seventh switching element, an eighth switching element;
the output end of the fifth switching element is connected with the radio frequency signal output end, and the input end of the fifth switching element is connected with the input end of the seventh switching element and used as a first input end of an output signal path switch selection circuit;
the output end of the sixth switching element is connected with the radio frequency signal output end, and the input end of the sixth switching element is connected with the input end of the eighth switching element and used as a second input end of the output signal path switch selection circuit;
the output end of the seventh switching element is singly grounded or connected in parallel with the output end of the eighth switching element.
3. The ultra wideband digital phase shifter of claim 2, wherein the controlled terminals of the first switching element, the fourth switching element, the fifth switching element, the eighth switching element are connected as a first controlled terminal of a phase shifting circuit module;
and the controlled ends of the second switching element, the third switching element, the sixth switching element and the seventh switching element are connected and serve as a second controlled end of the phase shifting circuit module.
4. The ultra wideband digital phase shifter of any one of claims 1-3, wherein the folded directional coupler comprises an input port, a coupling port, a pass-through port, an isolation port, the phase compensation circuit comprises a first capacitance, the first odd-even mode compensation circuit comprises a first inductance, and the second odd-even mode compensation circuit comprises a second inductance;
the coupling port and the through port of the folding directional coupler are grounded, the input port of the folding directional coupler is connected with the input end of the first capacitor of the phase compensation circuit, and the isolation port is connected with the output end of the first capacitor of the phase compensation circuit;
the output end of a first inductor of the first odd-even mode compensation circuit is connected with the input port of the folding directional coupler, and the input end of the first inductor is used as the input end of the phase-shifting signal path;
and the input end of a second inductor of the second odd-even mode compensation circuit is connected with the output port of the folding directional coupler, and the output end of the second inductor is used as the output end of the phase-shifting signal path.
5. The ultra wideband digital phase shifter of any one of claims 1-3, wherein the magnetically coupled full-pass network comprises a fifth inductor, a sixth inductor, a fourth capacitor, and a fifth capacitor, an output of the fifth inductor being connected to an input of the sixth inductor as a common port of the magnetically coupled full-pass network, an input of the fifth inductor being an input of the magnetically coupled full-pass network, an output of the sixth inductor being an output port of the magnetically coupled full-pass network;
the public port of the magnetic coupling all-pass network is connected with the input end of the fourth capacitor, and the output port of the fourth capacitor is grounded;
the first high-frequency compensation circuit comprises a third inductor and a second capacitor, wherein the output end of the third inductor is connected with the input end of the second capacitor, the output end of the second capacitor is the output end of the first high-frequency compensation network and is connected with the input end of the magnetic coupling full-pass network, and the input end of the third inductor is the input end of the first high-frequency compensation network and is used as the input end of a reference signal path;
the second high-frequency compensation circuit comprises a fourth inductor and a third capacitor, wherein the input end of the fourth inductor is connected with the output end of the third capacitor, the input end of the third capacitor is the input end of the second high-frequency compensation network and is connected with the output end of the magnetic coupling full-pass network, and the output end of the fourth inductor is the output end of the first high-frequency compensation network and is used as the output end of the reference signal path.
6. The ultra wideband digital phase shifter of any one of claims 1-3, wherein the control circuit module includes a first current limiting resistor, a pull-down resistor, a level shift module, and an inverter module;
the level conversion module comprises a first conversion diode Guan and an eighth conversion diode which are sequentially connected in series, wherein the input of the first conversion diode is the input of the level conversion module, the input of the first conversion diode is connected with the output end of the first current limiting resistor, the input end of the first current limiting resistor is a control level input signal, and the output end of the eighth conversion diode is connected with the input end of the pull-down resistor and is used as the output end of the level conversion module;
the inverter module comprises a first inverter to a fifth inverter, the input end of the first inverter is connected with the output end of the level conversion module, and the output end of the first inverter is connected with the input end of the second inverter; the input end of the third inverter is connected with the output end of the second inverter, and the output end of the third inverter is the first level output of the control circuit module; the input end of the fifth inverter is connected with the output end of the fourth inverter, and the output end of the fifth inverter is the second level output of the control circuit module;
the reference voltages of the first inverter to the fifth inverter are connected with each other and the output end of the pull-down resistor.
7. The ultra wideband digital phase shifter of claim 6, wherein the first to fifth inverters each include a ninth switching element, a tenth switching element, and a second current limiting resistor;
the controlled end of the ninth switching element is the input end of the first to fifth inverters, one end of the ninth switching element is connected with the reference voltage, and the other end of the ninth switching element is connected with the controlled end of the tenth switching element and is used as the output end of the first to fifth inverters; one end of the tenth switching element passes through the second current limiting resistor and is connected with the controlled end, and the other end of the tenth switching element is grounded.
8. The ultra wideband digital phase shifter of claim 6, wherein a first controlled end of the phase shifter circuit module is coupled to a first level output of the control circuit module and a second controlled end of the phase shifter circuit module is coupled to a second level output of the control circuit module.
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| GB938954A (en) * | 1958-09-24 | 1963-10-09 | Thompson Ramo Wooldridge Inc | Circuit characteristic compensating system |
| CN106785251A (en) * | 2016-12-29 | 2017-05-31 | 中国电子科技集团公司第五十五研究所 | Mode transmission ultra-broadband digital phase shifter |
| CN110350931A (en) * | 2019-06-03 | 2019-10-18 | 西安电子科技大学 | A kind of ultra-wide band radio-frequency front end receiver circuit |
| CN113949361A (en) * | 2021-10-14 | 2022-01-18 | 中电国基南方集团有限公司 | Ultra-wideband phase-shifting circuit |
| CN115021701A (en) * | 2022-07-26 | 2022-09-06 | 南通米乐为微电子科技有限公司 | Ultra-wideband analog phase shifter |
| CN115967369A (en) * | 2022-12-19 | 2023-04-14 | 中国电子科技集团公司第五十五研究所 | Ultra-wideband phase shifter based on band-pass filter network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280991B (en) * | 2015-11-13 | 2018-05-29 | 南京米乐为微电子科技有限公司 | Ultra-broadband digital phase shifter |
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|---|---|---|---|---|
| GB938954A (en) * | 1958-09-24 | 1963-10-09 | Thompson Ramo Wooldridge Inc | Circuit characteristic compensating system |
| CN106785251A (en) * | 2016-12-29 | 2017-05-31 | 中国电子科技集团公司第五十五研究所 | Mode transmission ultra-broadband digital phase shifter |
| CN110350931A (en) * | 2019-06-03 | 2019-10-18 | 西安电子科技大学 | A kind of ultra-wide band radio-frequency front end receiver circuit |
| CN113949361A (en) * | 2021-10-14 | 2022-01-18 | 中电国基南方集团有限公司 | Ultra-wideband phase-shifting circuit |
| CN115021701A (en) * | 2022-07-26 | 2022-09-06 | 南通米乐为微电子科技有限公司 | Ultra-wideband analog phase shifter |
| CN115967369A (en) * | 2022-12-19 | 2023-04-14 | 中国电子科技集团公司第五十五研究所 | Ultra-wideband phase shifter based on band-pass filter network |
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