CN219554938U - Compact vector modulation phase shifter - Google Patents
Compact vector modulation phase shifter Download PDFInfo
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- CN219554938U CN219554938U CN202320621646.6U CN202320621646U CN219554938U CN 219554938 U CN219554938 U CN 219554938U CN 202320621646 U CN202320621646 U CN 202320621646U CN 219554938 U CN219554938 U CN 219554938U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a compact vector modulation phase shifter, comprising: the coupler is used for decomposing the signal to be phase-shifted into an I path signal and a Q path signal; the short-circuit switch network is used for short-circuiting and grounding the I-path signal or the Q-path signal when the minimum precision phase is shifted; the quadrant switch network is used for adjusting the phase quadrants of the I-path signals and the Q-path signals so that the target phase-shifting signals output by the combiner are modulated into the required phase quadrants; the attenuator is used for carrying out amplitude attenuation on the I-path signal and the Q-path signal after phase quadrant adjustment; and the combiner is used for superposing the I path signal and the Q path signal subjected to amplitude attenuation to obtain a target phase-shifting signal.
Description
Technical Field
The utility model belongs to the technical field of circuit design, and relates to a compact vector modulation phase shifter.
Background
Phased array technology has become an important component in high frequency wireless communications. The phased array technology can be applied to the front end of communication, radar and other systems, and the beamforming and the beam scanning of signals are realized. The phased array technology is used at a signal transmitting end to improve the effective omnidirectional radiation power of signals, and is used at a signal receiving end to improve the sensitivity of the system. In recent years, with the development of millimeter wave communication and radar technology, phased array systems are widely used in communication fields such as 5G millimeter wave communication, automotive radar, and the like by virtue of their advantages of effectively improving the communication rate of a communication system, the detection accuracy of a radar system, and the like.
In a phased array system, the phase shifter is used as a circuit module for realizing the most core of phased array functions, the performance of the phase shifter is directly related to the performance of the phased array system, such as the power of a transmitting end, the precision of a receiving end and the like, and plays a vital role in the phased array system. In addition, the area of the phase shifter occupies a large proportion in the phased array chip, and the smaller the area is, the more channels per unit area are, which is more beneficial to the phased array system, so that the reduction of the area of the phase shifter is an important research direction on the premise of ensuring the accuracy.
Vector modulation phase shifters are an important phase shifter structure. The device mainly comprises a coupler (coupler), a quadrant switch, a Digital Step Attenuator (DSA) and a combiner (combiner), wherein the structural block diagram is shown in figure 1, and each part has the following functions:
a coupler: the input signal is decomposed into two paths of signals I/Q, the signals I are kept with 0 phase shift, and the signals Q are phase shifted by 90 degrees.
Quadrant switch: and the switching of different quadrants is realized by combining the I/Q signals.
Attenuator I/Q: and carrying out attenuation of different amplitudes on the signals to realize vector superposition of different amplitudes.
A combiner: and re-superposing the signals subjected to attenuation and quadrant switching to obtain vector signals with different amplitudes and phases.
In the traditional vector modulation phase shifting, a common quadrant switch network is used, and because the turn-off isolation of a switch is limited, if a vector point (namely a point closest to a coordinate axis) with the minimum phase shifting is to be obtained in design, a post-stage attenuation network is required to realize extremely large attenuation dynamics, so that the number of stages of an attenuator is required to be increased, the insertion loss of the whole phase shifter is increased, the area of the phase shifter is greatly increased, the area of a chip is increased, and the cost of the chip is increased.
Disclosure of Invention
The utility model aims to: in order to solve the problem that the traditional vector modulation phase shifter has two obvious phase shift points which cannot be obtained near the coordinate axis, the utility model provides a compact vector modulation phase shifter.
The technical scheme is as follows: a compact vector modulation phase shifter comprising:
the coupler is used for decomposing the signal to be phase-shifted into an I path signal and a Q path signal, wherein the I path signal and the signal to be phase-shifted keep the same phase, and the phase difference between the Q path signal and the I path signal is 90 degrees;
the short-circuit switch network is used for short-circuiting and grounding the I-path signal or the Q-path signal when the minimum precision phase is shifted;
the quadrant switch network is used for adjusting the phase quadrants of the I-path signals and the Q-path signals so that the target phase-shifting signals output by the combiner are modulated into the required phase quadrants;
the attenuator is used for carrying out amplitude attenuation on the I-path signal and the Q-path signal after phase quadrant adjustment;
and the combiner is used for superposing the I path signal and the Q path signal subjected to amplitude attenuation to obtain a target phase-shifting signal.
Further, the short-circuit switch network comprises a first short-circuit switch circuit and a second short-circuit switch circuit; the quadrant switch network comprises a first quadrant switch circuit and a second quadrant switch circuit; the attenuator comprises an attenuator I and an attenuator Q;
the input end of the first short-circuit switch circuit is connected with the I-path signal output port of the coupler, and the output end of the first short-circuit switch circuit is grounded;
the input end of the second short-circuit switch circuit is connected with the Q-channel signal output port of the coupler, and the output end of the second short-circuit switch circuit is grounded;
the input end of the first quadrant switch circuit is connected with the I-path signal output port of the coupler, and the output end of the first quadrant switch circuit is connected with the input end of the attenuator I;
the input end of the second quadrant switch circuit is connected with the Q-channel signal output port of the coupler, and the output end of the second quadrant switch circuit is connected with the input end of the attenuator Q;
the output end of the attenuator I is connected with the first input end of the combiner, and the output end of the attenuator Q is connected with the second input end of the combiner.
Further, when the signal to be phase-shifted is a single-ended signal, the first quadrant switch circuit includes a first quadrant switch, the second quadrant switch circuit includes a second quadrant switch, and when the first quadrant switch and the second quadrant switch are turned on, and the first short-circuit switch circuit and the second short-circuit switch circuit are turned off, the phase of the target phase-shifted signal is in the first quadrant.
Further, when the signal to be phase-shifted is a differential signal, the first quadrant switch circuit includes a first quadrant switch, a third quadrant switch, a fourth quadrant switch and a fifth quadrant switch; the second quadrant switch circuit comprises a second quadrant switch, a sixth quadrant switch, a seventh quadrant switch and an eighth quadrant switch;
one end of the first quadrant switch is connected with the I-path positive signal output end of the coupler, and the other end of the first quadrant switch is connected with the positive input end of the attenuator I; one end of the quadrant switch III is connected with the I-path negative signal output end of the coupler, and the other end of the quadrant switch III is connected with the negative input end of the attenuator I; one end of the fourth quadrant switch is connected with the I-path positive signal output end of the coupler, and the other end of the fourth quadrant switch is connected with the negative input end of the attenuator I; one end of the quadrant switch five is connected with the I-path negative signal output end of the coupler, and the other end of the quadrant switch five is connected with the positive input end of the attenuator I;
one end of the second quadrant switch is connected with the Q-channel positive signal output end of the coupler, and the other end of the second quadrant switch is connected with the positive input end of the attenuator Q; one end of the quadrant switch six is connected with the Q-channel negative signal output end of the coupler, and the other end of the quadrant switch six is connected with the negative input end of the attenuator Q; one end of the quadrant switch seven is connected with the Q-channel positive signal output end of the coupler, and the other end of the quadrant switch seven is connected with the negative input end of the attenuator Q; one end of the quadrant switch eight is connected with the Q-channel negative signal output end of the coupler, and the other end of the quadrant switch eight is connected with the positive input end of the attenuator Q.
Further, when the first, third and second short-circuit switch circuits are turned on and the fourth, fifth and first short-circuit switch circuits are turned off, the phase of the target phase-shifting signal is on the positive X-axis of the first quadrant and moves along with the amplitude of the I-path signal;
when the fourth quadrant switch, the fifth quadrant switch and the second short-circuit switch circuit are switched on, and the first quadrant switch, the third quadrant switch and the first short-circuit switch circuit are switched off, the phase of the target phase-shifting signal is positioned on the X-axis negative axis in the first quadrant, and moves along with the amplitude of the I-path signal;
when the second quadrant switch, the sixth quadrant switch and the first short-circuit switch circuit are switched on, and the seventh quadrant switch, the eighth quadrant switch and the second short-circuit switch circuit are switched off, the phase of the target phase-shifting signal is positioned on the Y-axis positive axis and moves along with the amplitude of the Q-path signal;
when the quadrant switch seven, the quadrant switch eight and the first short-circuit switch circuit are switched on, and the quadrant switch two, the quadrant switch six and the second short-circuit switch circuit are switched off, the phase of the target phase-shifting signal is positioned on the Y-axis negative axis and moves along with the amplitude of the Q-way signal.
Further, when the first quadrant switch, the third quadrant switch, the second quadrant switch and the sixth quadrant switch are conducted, and meanwhile, the fourth quadrant switch, the fifth quadrant switch, the seventh quadrant switch, the eighth quadrant switch, the first short-circuit switch circuit and the second short-circuit switch circuit are turned off, the target phase-shifting signal phase is in the first quadrant;
when the four-quadrant switch, the five-quadrant switch, the two-quadrant switch and the six-quadrant switch are conducted, and meanwhile, the first-quadrant switch, the three-quadrant switch, the seven-quadrant switch, the eight-quadrant switch, the first short-circuit switch circuit and the second short-circuit switch circuit are turned off, the target phase-shifting signal phase is in the second quadrant;
when the four-quadrant switch, the five-quadrant switch, the seven-quadrant switch and the eight-quadrant switch are conducted, and meanwhile, the first-quadrant switch, the three-quadrant switch, the two-quadrant switch, the six-quadrant switch, the first short-circuit switch circuit and the second short-circuit switch circuit are turned off, the target phase-shifting signal phase is in a third quadrant;
when the first quadrant switch, the third quadrant switch, the seventh quadrant switch and the eighth quadrant switch are turned on, and the fourth quadrant switch, the fifth quadrant switch, the second quadrant switch, the sixth quadrant switch, the first short-circuit switch circuit and the second short-circuit switch circuit are turned off, the target phase-shifting signal phase is in the fourth quadrant.
The beneficial effects are that: compared with the existing vector modulation phase shifter, the compact vector modulation phase shifter provided by the utility model has the advantages that the area of the compact vector modulation phase shifter is smaller than that of the existing vector modulation phase shifter under the same phase shifting precision, and the phase shifting precision of the compact vector modulation phase shifter is higher than that of the existing vector modulation phase shifter under the conditions of area and insertion loss.
Drawings
FIG. 1 is a block diagram of a single-ended version of a conventional vector modulation phase shifter;
FIG. 2 is a block diagram of a single-ended version of a compact vector modulation phase shifter of the present utility model;
FIG. 3 is a schematic diagram of vector superposition;
FIG. 4 is a block diagram of a differential version of a compact vector modulation phase shifter of the present utility model;
FIG. 5 is a lattice diagram of a conventional vector modulation phase shifter;
fig. 6 is a lattice diagram corresponding to the differential version of the compact vector modulation phase shifter of the present utility model.
Detailed Description
The technical scheme of the utility model is further described with reference to the accompanying drawings and the embodiments.
Example 1:
as shown in fig. 2, the present utility model proposes a compact vector modulation phase shifter, whose single-ended circuit mainly includes a coupler, a short-circuit switch network, a quadrant switch network, an attenuator, and a combiner.
The coupler is responsible for decomposing a signal to be phase-shifted into an I-path signal and a Q-path signal, the I-path signal and the signal to be phase-shifted keep the same phase, and the phase difference between the Q-path signal and the I-path signal is 90 degrees. The short-circuit switch network is responsible for short-circuiting the unwanted signals to the ground when the minimum precision phase is shifted, namely, the angle is minimum, the unwanted signals are short-circuited to the ground, and the short-circuit operation is not performed at other times, so that the dynamic requirements on the attenuator can be effectively reduced. In this embodiment, the first and second quadrant switches S1 and S4 are adopted, and the current phase quadrants of the I and Q signals of the signal to be phase-shifted are adjusted by the first and second quadrant switches S1 and S4, so as to ensure that the target phase-shifted signal output by the combiner is correspondingly modulated into the current phase quadrant. For example, the first quadrant switch S1 and the second quadrant switch S4 are turned on, so as to adjust the target phase shift signal corresponding to the signal to be phase shifted in the first phase quadrant. The attenuator is responsible for carrying out attenuation of different amplitudes on the I-path signal and the Q-path signal subjected to phase quadrant adjustment, and vector superposition of different amplitudes is realized. In this embodiment, the attenuator includes an attenuator I and an attenuator Q, the attenuator I is connected to the I-path signal after the phase quadrant adjustment through the first quadrant switch S1, and the attenuator Q is connected to the Q-path signal after the phase quadrant adjustment through the second quadrant switch S4. The combiner is responsible for superposing the I-path signal and the Q-path signal subjected to phase quadrant adjustment and amplitude attenuation to obtain a target phase-shifting signal.
The following is a mathematical representation of the above process with the shift of the single ended signal in the first phase quadrant (see fig. 3).
Assume that the signal to be phase shifted Vin is:
Vin＝sin(ωt) (1)
where ω is the signal frequency and t is the time.
After passing through the coupler, I-path signal Vi is obtained 1 And Q-way signal Vq 1 Expressed as:
when the phase is shifted in the first phase quadrant, the first quadrant switch S1 and the second quadrant switch S4 are turned on, the first short-circuit switch S2 and the second short-circuit switch S3 are disconnected, and when the phase is shifted at the minimum precision of the I axis, the first short-circuit switch S2 is disconnected, and the second short-circuit switch S3 is turned on; when the minimum precision phase shift on the Q axis occurs, the first shorting switch S2 is on and the second shorting switch S3 is off.
Neglecting the on-plug loss and the off-isolation of the quadrant switch, the gains of the attenuator I and the attenuator Q are Ai and Aq respectively, and the gain is obtained:
Vi＝Ai*sin t (3)
Vq＝Aq*cos t (4)
after passing through the combiner, the following is obtained:
thus, the operation of shifting the phase of the signal to be shifted by 0-90 degrees in the first phase quadrant is realized.
From the above analysis, it can be seen that: the smaller the Aq, the higher the phase shift accuracy that can be achieved at minimum accuracy phase shift operation near the I-axis. In the conventional vector modulation phase shifter, vq is limited due to the off isolation of the two S4 quadrant switches 1 There will always be energy leaking to Vq point, but in the present utility model, a short-circuit switch is added, at this time, the second short-circuit switch S3 is turned on to make Q-way signal Vq 1 The direct short circuit to the ground can effectively reduce the signal energy leaked to the Vq, thereby improving the phase shifting precision at the moment. Similarly, minimum precision phase shifting near the Q axisWhen in operation, the first short-circuit switch S2 is turned on to send the I-path signal Vi 1 Short to ground.
In embodiment 1, only one case of single-ended circuit is discussed, that is, the target phase-shifting signal corresponding to the signal to be phase-shifted is adjusted in the first phase quadrant by opening and closing the first quadrant switch S1, the second quadrant switch S4, the first short-circuit switch S2 and the second short-circuit switch S3, and when the phase needs to be adjusted to the second quadrant and the third quadrant, the phase needs to be achieved through the differential circuit, which can be referred to in embodiment 2.
Example 2:
in most applications, the compact vector modulation phase shifter proposed by the present utility model exists more in differential form. Thus, the present embodiment discloses a differential version of the phase shifter.
As shown in fig. 4, assume that the signal to be phase-shifted is a pair of differential signals Vin and Vin-, the coupler splits the differential signal into I-path differential signal pairs Vi1 and Vi1-, and Q-path differential signal pairs Vq1 and Vq1-; the decomposed differential signal pairs sequentially pass through a quadrant switch network and a corresponding attenuator to obtain I-path differential signal pairs Vi and Vi-, and Q-path differential signal pairs Vq and Vq-; the combiner is used for superposing a positive signal Vi of the I-path differential signal pair and a positive signal Vq of the Q-path differential signal pair to obtain a target phase-shifting positive signal Vout, and superposing a negative signal Vi-of the I-path differential signal pair and a negative signal Vq-of the Q-path differential signal pair to obtain a target phase-shifting negative signal Vout-. When the phase is shifted with minimum precision, the unnecessary signals are short-circuited to the ground by operating the corresponding short-circuit switch network, so that more phase shift points can be ensured to be obtained.
As shown in fig. 4, in the present embodiment, the short-circuit switch network includes a first short-circuit switch S2, a third short-circuit switch S2-, a second short-circuit switch S3, and a fourth short-circuit switch S3-; the quadrant switch network comprises: quadrant switch one S1, quadrant switch three S1-, quadrant switch four S5, quadrant switch five S5-, quadrant switch two S4-, quadrant switch six S4-, quadrant switch seven S6 and quadrant switch eight S6-. One end of the quadrant switch I S1 is connected with the positive signal output end of the I path of the coupler, and the other end of the quadrant switch I is connected with the positive input end of the attenuator I; one end of the quadrant switch three S1-is connected with the I-path negative signal output end of the coupler, and the other end of the quadrant switch three S1-is connected with the negative input end of the attenuator I; one end of the quadrant switch IV S5 is connected with the I-path positive signal output end of the coupler, and the other end of the quadrant switch IV is connected with the negative input end of the attenuator I; one end of the quadrant switch five S5-is connected with the I-path negative signal output end of the coupler, and the other end of the quadrant switch five S5-is connected with the positive input end of the attenuator I; one end of the second quadrant switch S4 is connected with the Q-channel positive signal output end of the coupler, and the other end of the second quadrant switch S is connected with the positive input end of the attenuator Q; one end of the quadrant switch six S4-is connected with the Q-path negative signal output end of the coupler, and the other end of the quadrant switch six S4-is connected with the negative input end of the attenuator Q; one end of a quadrant switch seven S6 is connected with the Q-channel positive signal output end of the coupler, and the other end of the quadrant switch seven S is connected with the negative input end of the attenuator Q; one end of the quadrant switch eight S6-is connected with the Q-path negative signal output end of the coupler, and the other end of the quadrant switch eight S6-is connected with the positive input end of the attenuator Q.
As shown in FIG. 4, when the first S1, third S1-, second S4 and sixth S4-quadrant switches are turned on, and the fourth S5, fifth S5-, seventh S6 and eighth S6-quadrant switches are turned off, and the first S2, third S2-, second S3 and fourth S3-quadrant switches are turned off, the output signal phase is in the first quadrant.
As shown in FIG. 4, when the four S5, five S5-, two S4 and six S4-quadrant switches are turned on, while the first S1, three S1-, seven S6 and eight S6-quadrant switches are turned off, and the first S2, three S2-, two S3 and four S3-short circuit switches are turned off, the output signal phase is in the second quadrant.
As shown in FIG. 4, when the four S5, five S5-, seven S6 and eight S6-quadrants are turned on, while turning off the first S1, three S1-, two S4 and six S4-quadrants and turning off the first S2, three S2-, two S3 and four S3-quadrants, the output signal phase is in the third quadrant.
As shown in FIG. 4, when the first S1, third S1-, seventh S6-, and eighth S6-of the quadrant switches are turned on, and the fourth S5, fifth S5-, second S4-, and sixth S4-of the quadrant switches are turned off, and the first S2, third S2-, second S3, and fourth S3-of the short-circuit switches are turned off, the output signal phase is in the fourth quadrant.
As shown in FIG. 4, when the first S1, the third S1-, the second S3 and the fourth S3-, are turned on, and the fourth S5, the fifth S5-, the first S2 and the third S2-are turned off, the phase of the output signal is on the positive axis of the X axis and moves along with the amplitude of the I-path signal.
As shown in FIG. 4, when the four S5, five S5-, two S3 and four S3-are turned on, and the first S1, three S1-, S2 and three S2-are turned off, the phase of the output signal is on the negative X-axis and moves with the amplitude of the I-path signal.
As shown in FIG. 4, when the second S4, the sixth S4-, the first S2 and the third S2-are turned on, and the seventh S6 and the eighth S6-are turned off, the second S3 and the fourth S3-are turned off, the phase of the output signal is on the positive Y-axis and moves with the amplitude of the Q-channel signal.
As shown in FIG. 4, when the quadrant switch seven S6, the quadrant switch eight S6-, the short-circuit switch one S2, the short-circuit switch three S2-, and the quadrant switch two S4, the quadrant switch six S4-, the short-circuit switch two S3 and the short-circuit switch four S3-are turned on, the output signal phase is on the Y-axis negative axis and moves along with the amplitude of the Q-path signal.
Fig. 5 and fig. 6 are respectively a lattice diagram of a conventional vector modulation phase shifter and a lattice diagram of a compact vector modulation phase shifter according to this embodiment, where attenuators used by the two are identical, and areas of the attenuators are identical. The circle point is an ideal phase shift point, and the cross point is a phase shift point which can be obtained by two phase shifters. It is apparent that the conventional vector modulation phase shifter has two distinct and unobtainable phase shift points near the coordinate axes, whereas the present embodiment provides significantly denser lattice and covers almost all of the ideal phase shift points. This demonstrates that this embodiment can achieve higher phase shift accuracy with the same area and insertion loss. If the same phase shift accuracy is required, the phase shifter of the present embodiment can use a smaller dynamic attenuator, and thus a smaller area phase shifter can be obtained.
Claims (6)
1. A compact vector modulation phase shifter, characterized by: comprising the following steps:
the coupler is used for decomposing the signal to be phase-shifted into an I path signal and a Q path signal, wherein the I path signal and the signal to be phase-shifted keep the same phase, and the phase difference between the Q path signal and the I path signal is 90 degrees;
the short-circuit switch network is used for short-circuiting and grounding the I-path signal or the Q-path signal when the minimum precision phase is shifted;
the quadrant switch network is used for adjusting the phase quadrants of the I-path signals and the Q-path signals so that the target phase-shifting signals output by the combiner are modulated into the required phase quadrants;
the attenuator is used for carrying out amplitude attenuation on the I-path signal and the Q-path signal after phase quadrant adjustment;
and the combiner is used for superposing the I path signal and the Q path signal subjected to amplitude attenuation to obtain a target phase-shifting signal.
2. A compact vector modulation phase shifter according to claim 1, wherein: the short-circuit switch network comprises a first short-circuit switch circuit and a second short-circuit switch circuit; the quadrant switch network comprises a first quadrant switch circuit and a second quadrant switch circuit; the attenuator comprises an attenuator I and an attenuator Q;
the input end of the first short-circuit switch circuit is connected with the I-path signal output port of the coupler, and the output end of the first short-circuit switch circuit is grounded;
the input end of the second short-circuit switch circuit is connected with the Q-channel signal output port of the coupler, and the output end of the second short-circuit switch circuit is grounded;
the input end of the first quadrant switch circuit is connected with the I-path signal output port of the coupler, and the output end of the first quadrant switch circuit is connected with the input end of the attenuator I;
the input end of the second quadrant switch circuit is connected with the Q-channel signal output port of the coupler, and the output end of the second quadrant switch circuit is connected with the input end of the attenuator Q;
the output end of the attenuator I is connected with the first input end of the combiner, and the output end of the attenuator Q is connected with the second input end of the combiner.
3. A compact vector modulation phase shifter according to claim 2, wherein: when the signal to be phase-shifted is a single-ended signal, the first quadrant switch circuit comprises a first quadrant switch, the second quadrant switch circuit comprises a second quadrant switch, and when the first quadrant switch and the second quadrant switch are conducted, and the first short-circuit switch circuit and the second short-circuit switch circuit are turned off, the target phase-shifted signal phase is in the first quadrant.
4. A compact vector modulation phase shifter according to claim 2, wherein: when the signal to be phase-shifted is a differential signal, the first quadrant switch circuit comprises a first quadrant switch, a third quadrant switch, a fourth quadrant switch and a fifth quadrant switch; the second quadrant switch circuit comprises a second quadrant switch, a sixth quadrant switch, a seventh quadrant switch and an eighth quadrant switch;
one end of the first quadrant switch is connected with the I-path positive signal output end of the coupler, and the other end of the first quadrant switch is connected with the positive input end of the attenuator I; one end of the quadrant switch III is connected with the I-path negative signal output end of the coupler, and the other end of the quadrant switch III is connected with the negative input end of the attenuator I; one end of the fourth quadrant switch is connected with the I-path positive signal output end of the coupler, and the other end of the fourth quadrant switch is connected with the negative input end of the attenuator I; one end of the quadrant switch five is connected with the I-path negative signal output end of the coupler, and the other end of the quadrant switch five is connected with the positive input end of the attenuator I;
one end of the second quadrant switch is connected with the Q-channel positive signal output end of the coupler, and the other end of the second quadrant switch is connected with the positive input end of the attenuator Q; one end of the quadrant switch six is connected with the Q-channel negative signal output end of the coupler, and the other end of the quadrant switch six is connected with the negative input end of the attenuator Q; one end of the quadrant switch seven is connected with the Q-channel positive signal output end of the coupler, and the other end of the quadrant switch seven is connected with the negative input end of the attenuator Q; one end of the quadrant switch eight is connected with the Q-channel negative signal output end of the coupler, and the other end of the quadrant switch eight is connected with the positive input end of the attenuator Q.
5. The compact vector modulation phase shifter of claim 4, wherein:
when the first quadrant switch, the third quadrant switch and the second short-circuit switch circuit are switched on, and the fourth quadrant switch, the fifth quadrant switch and the first short-circuit switch circuit are switched off, the target phase-shifting signal phase is positioned on the positive X-axis of the first quadrant, and moves along with the amplitude of the I-path signal;
when the fourth quadrant switch, the fifth quadrant switch and the second short-circuit switch circuit are switched on, and the first quadrant switch, the third quadrant switch and the first short-circuit switch circuit are switched off, the phase of the target phase-shifting signal is positioned on the X-axis negative axis in the first quadrant, and moves along with the amplitude of the I-path signal;
when the second quadrant switch, the sixth quadrant switch and the first short-circuit switch circuit are switched on, and the seventh quadrant switch, the eighth quadrant switch and the second short-circuit switch circuit are switched off, the phase of the target phase-shifting signal is positioned on the Y-axis positive axis and moves along with the amplitude of the Q-path signal;
when the quadrant switch seven, the quadrant switch eight and the first short-circuit switch circuit are switched on, and the quadrant switch two, the quadrant switch six and the second short-circuit switch circuit are switched off, the phase of the target phase-shifting signal is positioned on the Y-axis negative axis and moves along with the amplitude of the Q-way signal.
6. The compact vector modulation phase shifter of claim 4, wherein:
when the first quadrant switch, the third quadrant switch, the second quadrant switch and the sixth quadrant switch are conducted, and meanwhile, the fourth quadrant switch, the fifth quadrant switch, the seventh quadrant switch, the eighth quadrant switch, the first short-circuit switch circuit and the second short-circuit switch circuit are turned off, the target phase-shifting signal phase is in the first quadrant;
when the four-quadrant switch, the five-quadrant switch, the two-quadrant switch and the six-quadrant switch are conducted, and meanwhile, the first-quadrant switch, the three-quadrant switch, the seven-quadrant switch, the eight-quadrant switch, the first short-circuit switch circuit and the second short-circuit switch circuit are turned off, the target phase-shifting signal phase is in the second quadrant;
when the four-quadrant switch, the five-quadrant switch, the seven-quadrant switch and the eight-quadrant switch are conducted, and meanwhile, the first-quadrant switch, the three-quadrant switch, the two-quadrant switch, the six-quadrant switch, the first short-circuit switch circuit and the second short-circuit switch circuit are turned off, the target phase-shifting signal phase is in a third quadrant;
when the first quadrant switch, the third quadrant switch, the seventh quadrant switch and the eighth quadrant switch are turned on, and the fourth quadrant switch, the fifth quadrant switch, the second quadrant switch, the sixth quadrant switch, the first short-circuit switch circuit and the second short-circuit switch circuit are turned off, the target phase-shifting signal phase is in the fourth quadrant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202320621646.6U CN219554938U (en) | 2023-03-27 | 2023-03-27 | Compact vector modulation phase shifter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320621646.6U CN219554938U (en) | 2023-03-27 | 2023-03-27 | Compact vector modulation phase shifter |
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