WO2021037132A1 - 馈电结构、微波射频器件及天线 - Google Patents
馈电结构、微波射频器件及天线 Download PDFInfo
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- WO2021037132A1 WO2021037132A1 PCT/CN2020/111699 CN2020111699W WO2021037132A1 WO 2021037132 A1 WO2021037132 A1 WO 2021037132A1 CN 2020111699 W CN2020111699 W CN 2020111699W WO 2021037132 A1 WO2021037132 A1 WO 2021037132A1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
- H01P1/184—Strip line phase-shifters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
- H01Q3/36—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters
Definitions
- the present disclosure belongs to the field of communication technology, and in particular relates to a feed structure, a microwave radio frequency device and an antenna.
- a phase shifter is a device that regulates the phase of electromagnetic waves and is widely used in various communication systems, such as satellite communication systems, phased array radars, and remote sensing and telemetry systems.
- Dielectric adjustable phase shifter is a device that realizes the phase shift effect by adjusting (or changing) the dielectric constant of the dielectric layer.
- the traditional dielectric adjustable phase shifter uses a single-wire transmission structure to achieve the phase shift effect by adjusting the phase speed of the signal, but the traditional dielectric adjustable phase shifter has a large loss and a low phase shift per unit loss.
- the embodiments of the present disclosure provide a feed structure, a microwave radio frequency device, and an antenna.
- a first aspect of the present disclosure provides a power feeding structure, including: a reference electrode, a first substrate and a second substrate arranged oppositely, and a dielectric layer filled between the first substrate and the second substrate; among them,
- the first substrate includes: a first substrate, and an input electrode disposed on a side of the first substrate close to the dielectric layer;
- the second substrate includes: a second substrate, and a receiving electrode disposed on a side of the second substrate close to the dielectric layer, and the orthographic projection of the receiving electrode on the first substrate and the input electrode The orthographic projections on the first substrate at least partially overlap to form a coupling structure; and
- the output terminal of at least one of the input electrode and the receiving electrode is connected to a phase shift structure, so that the phase of the microwave signal transmitted through the first substrate is different from the phase of the microwave signal transmitted through the second substrate; And the input electrode, the receiving electrode and the phase shift structure all form a current loop with the reference electrode.
- only the output terminal of the input electrode is connected to the phase shift structure.
- the phase shift structure includes any one of a time delay transmission line, a switch type phase shifter, a load type phase shifter, a filter type phase shifter, and a vector modulation type phase shifter.
- the phase shift structure is a time delay transmission line
- the time delay transmission line is connected to the output end of the input electrode
- the time delay transmission line and the input electrode are arranged in the same layer, and the material is the same.
- the coupling structure formed by the input electrode and the receiving electrode includes a tight coupling structure.
- the input electrode, the receiving electrode, and the reference electrode form any one of a microstrip line transmission structure, a strip line transmission structure, a co-surface waveguide transmission structure, and a substrate-integrated waveguide transmission structure.
- the power feeding structure further includes: a support assembly located between the first substrate and the second substrate, and the support assembly is used to maintain the first substrate and the second substrate the distance between.
- the support component includes a dispensing support component or a spacer.
- the medium layer includes air or inert gas.
- the microwave signal transmitted via the first substrate and the microwave signal transmitted via the second substrate have a phase difference of 180°.
- the coupling structure forms a coupling capacitor, and the capacitance value of the coupling capacitor is greater than 1 pF.
- a second aspect of the present disclosure provides a microwave radio frequency device including the feeding structure according to any one of the embodiments of the first aspect of the present disclosure.
- the microwave radio frequency device further includes a phase shifting component, and the phase shifting component includes:
- a second transmission line arranged on a side of the fourth substrate close to the first transmission line
- a liquid crystal layer provided between the first transmission line and the second transmission line;
- a ground electrode provided on a side of the third substrate away from the first transmission line.
- At least one of the first transmission line and the second transmission line is a microstrip line.
- each of the first transmission line and the second transmission line is a comb electrode, and the ground electrode is a plate electrode.
- the phase shift structure of the feed structure is coupled to the first transmission line of the phase shift component, and the receiving electrode of the feed structure is connected to the phase shift component.
- the second transmission line is coupled.
- the reference electrode of the power feeding structure is located on a side of the first substrate away from the dielectric layer, and is connected to the ground electrode of the phase shifting component.
- the liquid crystal layer includes positive liquid crystal molecules or negative liquid crystal molecules
- the angle between the long axis direction of each positive liquid crystal molecule and the plane where the third substrate is located is greater than 0 degree and less than or equal to 45 degrees;
- the angle between the long axis direction of each negative liquid crystal molecule and the plane where the third substrate is located is greater than 45 degrees and less than 90 degrees.
- the microwave radio frequency device includes a phase shifter or a filter.
- a third aspect of the present disclosure provides an antenna including the microwave radio frequency device according to any one of the embodiments of the second aspect of the present disclosure.
- Fig. 1 is a schematic diagram of a power feeding structure according to an embodiment of the present disclosure
- Fig. 2 is a top view of a feeding structure according to an embodiment of the present disclosure
- FIG. 3 is a schematic cross-sectional view of the power feeding structure shown in FIG. 2 along the line AA';
- FIG. 4 is a schematic cross-sectional view of the feeding structure shown in FIG. 2 along the line BB';
- Fig. 5 is a schematic diagram of a phase shifting component of a phase shifter according to an embodiment of the present disclosure.
- the feed structure provided in the following embodiments of the present disclosure can be widely used in the differential mode feed structure of the two-layer transmission line inside the double substrate.
- the device can be a differential mode signal line, a filter, a phase shifter, etc.
- a microwave radio frequency device can be used as a phase shifter for description.
- the phase shifter ie, microwave radio frequency device not only includes a feed structure (as shown in FIGS. 1 to 4), but also may include a phase shift component (as shown in FIG. 5).
- the phase shifting component includes a first transmission line 3 arranged on a first substrate (or referred to as a “third substrate”) 10, and a second substrate (or referred to as a “fourth substrate”) 20.
- the second transmission line 4 on the side close to the first transmission line 3, the dielectric layer disposed between the layer where the first transmission line 3 and the second transmission line 4 are located, and the ground electrode 40.
- the medium layer includes, but is not limited to, the liquid crystal layer 5. In the following embodiments, the medium layer is the liquid crystal layer 5 as an example for description.
- both the first transmission line 3 and the second transmission line 4 may be microstrip lines, and at this time, the ground electrode 40 is disposed on the side of the first substrate 10 away from the first transmission line 3.
- the first transmission line 3 and the second transmission line 4 Each of them may use comb-shaped electrodes (that is, each of the first transmission line 3 and the second transmission line 4 may be provided with a plurality of spaced apart at a constant interval on each side parallel to the plane where the first substrate 10 is located.
- the electrode strip (not shown)), and the ground electrode 40 can be a plate electrode. That is, the first transmission line 3, the second transmission line 4, and the ground electrode 40 constitute a microstrip line transmission structure.
- the first transmission line 3, the second transmission line 4 and the ground electrode 40 can also constitute any one of the known strip line transmission structure, co-surface waveguide transmission structure, and substrate integrated waveguide transmission structure, which will not be described here. The details of these known structures are to keep this description short.
- the feeding structure may include: a reference electrode (for example, the ground electrode 30), a first substrate (for example, the first substrate 10 and the input electrode 11 described below) and a second substrate (for example, the following The second base 20 and the receiving electrode 12), and the dielectric layer 60 filled between the first substrate and the second substrate.
- the first substrate may include: a first substrate 10 and an input electrode 11 disposed on a side of the first substrate 10 close to the dielectric layer 60.
- the second substrate may include: a second substrate 20, and a receiving electrode 12 disposed on the side of the second substrate 20 close to the dielectric layer 60, and the orthographic projection of the receiving electrode 12 on the first substrate 10 and the input electrode 11 on the first substrate
- the orthographic projections on 10 at least partially overlap to form the coupling structure 1.
- the coupling structure 1 forms a coupling capacitor C coupling
- the capacitance value of the coupling capacitor C coupling is greater than 1 pF. In this way, the capacitive reactance of the coupling capacitor is negligible for microwave signals, so that the feeding structure will change from
- the input signal received by the input terminal Inp1 is divided into two sub-signals with equal power transmitted by the input electrode 11 and the receiving electrode 12 respectively.
- At least one of the output terminal Outp1 of the input electrode 11 and the output terminal Outp2 of the receiving electrode 12 is connected to the phase shift structure 2 (for example, connected to the input terminal Inp2 of the phase shift structure 2), so that the microwave transmitted through the first substrate The signal is different in phase from the microwave signal transmitted via the second substrate.
- the input electrode 11, the receiving electrode 12, and the phase shift structure 2 all form a current loop with the reference electrode.
- the dielectric layer 60 in the power feeding structure includes but is not limited to air.
- the dielectric layer 60 is air as an example for description.
- the dielectric layer 60 may also be an inert gas or the like.
- the input electrode 11, the receiving electrode 12 and the reference electrode in the feeding structure constitute any one of the known microstrip line transmission structure, strip line transmission structure, co-surface waveguide transmission structure and substrate integrated waveguide transmission structure.
- the input electrode 11, the receiving electrode 12 and the reference electrode constitute a microstrip line transmission structure as an example.
- the reference electrode may be located on the side of the first substrate 10 away from the input electrode 11.
- the ground electrode 30 may be used as the reference electrode in the embodiment of the present disclosure.
- the present disclosure is not limited to this, as long as the reference electrode can have a certain voltage difference with the input electrode 11, in this embodiment, the reference electrode is the ground electrode 30 as an example for description.
- the ground electrode 30 (ie, the reference electrode) in the power feeding structure is located on the side of the first substrate 10 away from the dielectric layer 60 and can be connected to the ground electrode 40 of the phase shifting assembly shown in FIG. 5.
- the ground electrode 30 in the power feeding structure and the ground electrode 40 of the phase shifting assembly shown in FIG. 5 may also adopt an integrally formed structure.
- the microwave signals propagated by the input electrode 11 and the receiving electrode 12 may be high-frequency signals.
- the current loop means that there is a certain voltage difference between the input electrode 11 and the receiving electrode 12 (or the ground electrode 30), and the input electrode 11 and the receiving electrode 12 (or the ground electrode 30) form a capacitance and/or conductance.
- the input electrode 11 is used to transmit microwave signals to the first transmission line 3 of the phase shifting component shown in FIG. 5, and the receiving electrode 12 is used to transmit microwave signals to the second transmission line 4 of the phase shifting component shown in FIG. Backflow to the ground electrode 30, that is, a current loop is formed.
- the output terminal (ie, the output terminal Outp1 or Outp2) of one of the input electrode 11 and the receiving electrode 12 of the coupling structure 1 is connected to the phase shift structure 2.
- the output terminal Outp1 of the input electrode 11 is connected to the phase shift structure 2 as an example for description (at this time, the output terminal Outp4 shown in FIG. 1 may be connected to the receiving electrode
- the output terminals Outp2 of 12 are the same, that is, the wire between the output terminals Outp2 and Outp4 can be omitted). That is, the input electrode 11 may be connected or coupled to the first transmission line 3 of the phase shifting component shown in FIG. 5 through the phase shift structure 2 (for example, through the output terminal Outp3 of the phase shift structure 2), and the output terminal of the receiving electrode 12 Outp2 can be directly connected or coupled to the second transmission line 4 of the phase shifting component shown in FIG. 5.
- the receiving electrode 12 when a microwave signal carrying a certain power is transmitted to the input electrode 11 of the coupling structure 1, the receiving electrode 12 is orthographically projected on the first substrate 10 and the input electrode 11 is on the first substrate 10. There is overlap in the upper orthographic projection. Therefore, a part of the microwave signal is transmitted to the phase shift structure 2 through the input electrode 11, and the phase of this part of the microwave signal is shifted, and then transmitted to the first transmission line 3 of the phase shift component shown in FIG. 5 ; Another part of the microwave signal will be coupled to the receiving electrode 12 and transmitted to the second transmission line 4 of the phase shifting component shown in FIG. 5.
- the phase of the microwave signal transmitted to the first transmission line 3 after the phase shifting structure 2 is different from the phase of the microwave signal transmitted to the second transmission line 4 through the receiving electrode 12.
- a certain voltage difference can be formed between the microwave signals (high frequency signals) transmitted by the first transmission line 3 and the second transmission line 4 in the phase shifting assembly, so that the first transmission line 3 and the second transmission line 4 are
- the overlapped portion forms a liquid crystal capacitor with a certain capacitance value.
- the phase shifter of the dual-substrate differential mode feed structure of this embodiment has a relatively large phase shift.
- the input electrode 11 and the receiving electrode 12 constitute a coupling structure similar to a 3dB coupler as an example for description.
- the 3dB coupler can also divide the microwave signal carrying power P approximately equally, so that the energy of the microwave signal transmitted by the input electrode 11 and the receiving electrode 12 is approximately the same, and the microwave transmitted by the input electrode 11 and the receiving electrode 12 The power carried by the signal is P/2.
- the coupling structure 1 formed by the input electrode 11 and the receiving electrode 12 is not limited to a 3dB coupling structure.
- the microwave signal carrying power P is divided equally through the 3dB coupling structure 1.
- the power of the microwave signal transmitted through the input electrode 11 and the phase shift structure 2 is P/2, the phase can be 270°, and the output of the receiving electrode 12
- the power of the microwave signal is P/2
- the phase can be 90°
- the phase difference of the microwave signal output from the two branches can be 180°, that is, it is transmitted to the first transmission line 3 and the first transmission line of the phase shifting component shown in FIG. 5
- the phase difference of the microwave signals on the two transmission lines 4 may be 180°.
- the voltage of the microwave signal input from the phase shift structure 2 to the first transmission line 3 of the phase shift component shown in FIG. 5 may be -1V, and the input motor 11 is coupled to the receiving electrode 12 and then input to the signal shown in FIG.
- the voltage carried by the microwave signal of the second transmission line 4 of the phase shifting component may be 1V.
- the liquid crystal capacitors generated by the first transmission line 3 and the second transmission line 4 have the largest capacitance values. Therefore, the maximum phase shift degree of the phase shift component shown in FIG. 5 is realized. .
- the above-mentioned embodiment only takes the phase difference between the microwave signals on the first substrate (for example, the input electrode 11 and the phase shift structure 2) and the second substrate (for example, the receiving electrode 12) to be 180°. Take it as an example. However, the phase difference is not limited to 180°. In fact, according to the phase shift degree of the phase shift structure 2, the microwave signal and the receiving electrode input from the phase shift structure 2 to the first transmission line 3 of the phase shift assembly shown in FIG. 5 can be adjusted. 12 The phase difference between the microwave signals input to the second transmission line 4 of the phase shifting component shown in FIG. 5.
- the output end of one of the input electrode 11 and the receiving electrode 12 in the coupling structure 1 is connected to the phase shift structure 2, so that the microwave signals transmitted by the first substrate and the second substrate are The phase is different.
- the phase shift structure 2 is connected to the output terminal of the input electrode 11. The reason for this arrangement is that the microwave signal on the receiving electrode 12 is coupled through the input electrode 11. During this process, part of the energy of the microwave signal will be lost. Therefore, if the output terminal of the receiving electrode 12 is connected to the phase shift structure 2 will make the loss of the microwave signal transmitted on the second substrate more serious, so the phase shift structure 2 is connected to the output end of the input electrode 11.
- the phase shift structure 2 may be of two types: time delay and non-time delay.
- the time delay phase shift structure 2 includes, but is not limited to, a time delay transmission line, a switch type phase shifter, a load type phase shifter, a filter type phase shifter, and the like.
- the time delay phase shift structure 2 is characterized by changing the signal phase speed or signal propagation distance to realize the phase change.
- the non-delayed phase shift structure 2 includes, but is not limited to, a vector modulation type phase shifter.
- the working principle of the non-delayed phase shift structure 2 has nothing to do with the time parameter of signal propagation.
- the phase shift structure 2 is a time-delayed transmission line and the time-delayed transmission line is connected to the output end of the input electrode 11, the time-delayed transmission line and the input electrode 11 are arranged in the same layer and have the same material.
- the time delay transmission line is connected to the output terminal of the receiving electrode 12, the time delay transmission line and the receiving electrode 12 are arranged in the same layer and the material is the same. In this way, the feeding structure can be made lighter and thinner, and the production efficiency can be improved and the process cost can be reduced.
- the time delay transmission line may be a meandering line
- the meandering line may have a rectangular waveform (for example, a square wave), an S shape (or a wave shape), and a Z shape (for example, a sawtooth shape).
- the shape of the meander line is not limited to the above-mentioned shape, and the shape of the meander line can be designed according to the impedance requirement of the feed structure.
- the phase shift structure 2 includes but is not limited to a tightly coupled structure.
- the tight coupling structure means that the coupling efficiency is above 0.5, that is, at least 50% of the power of the microwave signal input to the input electrode 11 is coupled to the receiving electrode 12.
- a tight coupling structure is adopted, and its coupling efficiency is higher than that of the existing parallel line coupler and tapered line coupler, there is no unnecessary line loss, and the bandwidth is appropriate.
- the feeding structure may further include at least one support assembly 50 located between the first substrate and the second substrate, for maintaining the distance between the first substrate and the second substrate .
- Each support component 50 includes, but is not limited to, a dispensing support component or a spacer (which is often referred to as a Photo Spacer in the field of liquid crystal display (LCD) technology).
- each of the first substrate 10 and the second substrate 20 may use a glass substrate with a thickness of 100 to 1000 micrometers, a sapphire substrate, or a thickness of 10 to 1000 micrometers. 500 micron polyethylene terephthalate substrate, triallyl cyanurate substrate or polyimide transparent flexible substrate.
- each of the first substrate 10 and the second substrate 20 may use high-purity quartz glass with extremely low dielectric loss.
- high-purity quartz glass may refer to quartz glass in which the weight percentage of SiO 2 is greater than or equal to 99.9%.
- the use of quartz glass for the first substrate 10 and/or the second substrate 20 can effectively reduce the loss of microwaves, so that the phase shifting components of the phase shifter have low power consumption and high signal-to-noise ratio.
- each of the input electrode 11, the receiving electrode 12, the ground electrode 30, the ground electrode 40, the first transmission line 3 and the second transmission line 4 may be aluminum, silver, gold, or chromium. , Molybdenum, nickel or iron and other metals.
- each of the first transmission line 3 and the second transmission line 4 may also be made of a transparent conductive oxide (for example, indium tin oxide (ITO)).
- ITO indium tin oxide
- the liquid crystal molecules in the liquid crystal layer 5 may be positive liquid crystal molecules or negative liquid crystal molecules. It should be noted that when the liquid crystal molecules are positive liquid crystal molecules, the angle between the long axis direction of each of the liquid crystal molecules in the embodiments of the present disclosure and the plane where the first substrate 10 or the second substrate 20 is located is greater than zero degrees. And less than or equal to 45 degrees. When the liquid crystal molecules are negative-directional liquid crystal molecules, the angle between the long axis direction of each of the liquid crystal molecules in the embodiments of the present disclosure and the plane where the first substrate 10 or the second substrate 20 is located is greater than 45 degrees and less than 90 degrees . In this way, it is ensured that after the liquid crystal molecules are deflected, the dielectric constant of the liquid crystal layer 5 is changed to achieve the purpose of phase shifting.
- embodiments of the present disclosure also provide a microwave radio frequency device, which includes the dual substrate feed structure according to any one of the above embodiments, and the microwave radio frequency device may include, but is not limited to, a filter or a phase shifter.
- the microwave radio frequency device may also include a phase shifting component as shown in FIG. 5.
- the embodiments of the present disclosure also provide an antenna (for example, a liquid crystal antenna), which includes the microwave radio frequency device according to any one of the above-mentioned embodiments.
- the antenna may also include at least two patch units disposed on the side of the second substrate 20 away from the liquid crystal layer 5, and the gap between every two adjacent patch units is connected to each side of the first transmission line 4.
- the gap between two adjacent electrode strips on the upper side is set correspondingly (for example, equal). In this way, the microwave signal after phase adjustment by any of the above-mentioned phase shifters can be radiated from the gap between the patch units.
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Abstract
Description
Claims (20)
- 一种馈电结构,包括:参考电极、相对设置的第一基板和第二基板,以及填充在所述第一基板和所述第二基板之间的介质层;其中,所述第一基板包括:第一基底,以及设置在所述第一基底靠近所述介质层一侧的输入电极;所述第二基板包括:第二基底,以及设置在所述第二基底靠近所述介质层一侧的接收电极,且所述接收电极在所述第一基底上的正投影与所述输入电极在所述第一基底上的正投影至少部分重叠,以构成耦合结构;以及所述输入电极和所述接收电极中的至少一者的输出端连接至相移结构,以使经由所述第一基板传输的微波信号与经由所述第二基板传输的微波信号的相位不同;且所述输入电极、所述接收电极和所述相移结构均与所述参考电极构成电流回路。
- 根据权利要求1所述的馈电结构,其中,仅所述输入电极的输出端连接至所述相移结构。
- 根据权利要求1或2所述的馈电结构,其中,所述相移结构包括:时延传输线、开关式移相器、负载式移相器、滤波式移相器和矢量调制式移相器中的任意一种。
- 根据权利要求2所述的馈电结构,其中,当所述相移结构为时延传输线,且所述时延传输线连接在所述输入电极的输出端时,所述时延传输线与所述输入电极同层设置,且材料相同。
- 根据权利要求1至4中任一项所述的馈电结构,其中,所述输入电极和所述接收电极所构成的所述耦合结构包括紧耦合结构。
- 根据权利要求1至5中任一项所述的馈电结构,其中,所述输入电极、所述接收电极和所述参考电极构成微带线传输结构、带状线传输结构、共表面波导传输结构和基片集成波导传输结构中任意一种。
- 根据权利要求1至6中任一项所述的馈电结构,还包括:位于所述第一基板和所述第二基板之间的支撑组件,所述支撑组件用于维持所述第一基板和所述第二基板之间的距离。
- 根据权利要求7所述的馈电结构,其中,所述支撑组件包括点胶支撑组件或者隔垫物。
- 根据权利要求1至8中任一项所述的馈电结构,其中,所述介质层包括:空气或惰性气体。
- 根据权利要求1至9中任一项所述的馈电结构,其中,经由所述第一基板传输的微波信号与经由所述第二基板传输的微波信号的具有180°的相位差。
- 根据权利要求1至10中任一项所述的馈电结构,其中,所述耦合结构形成耦合电容,并且所述耦合电容的电容值大于1pF。
- 一种微波射频器件,包括根据权利要求1至11中任一项所述的馈电结构。
- 根据权利要求12所述的微波射频器件,还包括移相组件,所述移相组件包括:彼此相对的第三基底和第四基底;设置在所述第三基底上的第一传输线;设置在所述第四基底靠近所述第一传输线一侧的第二传输线;设置在所述第一传输线和所述第二传输线之间的液晶层;以及设置在所述第三基底的远离所述第一传输线一侧上的接地电极。
- 根据权利要求13所述的微波射频器件,其中,所述第一传输线和所述第二传输线中的至少一个是微带线。
- 根据权利要求13或14所述的微波射频器件,其中,所述第一传输线和所述第二传输线中的每一个是梳状电极,并且所述接地电极是板状电极。
- 根据权利要求13至15中任一项所述的微波射频器件,其中,所述馈电结构的所述相移结构与所述移相组件的所述第一传输线耦接,并且所述馈电结构的所述接收电极与所述移相组件的所述第二传输线耦接。
- 根据权利要求13至16中任一项所述的微波射频器件,其中,所述馈电结构的所述参考电极位于所述第一基底背离所述介质层的一侧,且与所述移相组件的所述接地电极连接。
- 根据权利要求13至17中任一项所述的微波射频器件,其中,所述液晶层包括正性液晶分子或负性液晶分子;每一个所述正性液晶分子的长轴方向与所述第三基底所在的平面之间的夹角大于0度小于等于45度;以及每一个所述负性液晶分子的长轴方向与所述第三基底所在的平面之间的夹角大于45度小于90度。
- 根据权利要求12至18中任一项所述的微波射频器件,其中,所述微波射频器件包括移相器或滤波器。
- 一种天线,包括根据权利要求12至19中任一项所述的微波射频器件。
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