685 results about "Circularly polarized antenna" patented technology

The invention relates to the technical field of antenna equipment, in particular to a multi-frequency resonant circularly polarized antenna array and a communication performance test method thereof, and solves the problem that an antenna cannot communicate through different frequencies at the same time. The antenna array comprises an antenna substrate, a circular antenna assembly and a radio frequency signal line; the circular antenna assembly comprises a feeding point, a feeder line and a radiation unit; when the circular antenna assembly works in a low-frequency working frequency band, the first branch knot and the second branch knot in the radiation unit form a first equivalent resonance length, and when the circular antenna assembly works in a high-frequency working frequency band, the part, close to the feeder line, of the second branch knot in the radiation unit and the third branch knot form a second equivalent resonance length. And when the circular antenna assembly works in a working frequency band with higher frequency, the part, close to the feeder line, of the second branch knot in the radiation unit and the fourth branch knot form a third equivalent resonance length. According to the invention, multi-band radiation and receiving can be realized, and the flexibility of the antenna is improved.

Aspects of this disclosure relate to an antenna array. An antenna array may include a first circularly polarized dipole antenna that includes a first pair of conductive elements. The antenna array may include a second circularly polarized dipole antenna that includes a second pair conductive elements, the second pair of conductive elements being geometrically orthogonal to the first pair of conductive elements. The antenna array may include a beamformer integrated circuit configured to drive the second circularly polarized dipole antenna such that the second circularly polarized dipole antenna transmits a first radio frequency signal while the first circularly polarized dipole antenna receives a second radio frequency signal. The first radio frequency signal can have a different polarization and be in a different frequency band than the second radio frequency signal.

The invention discloses a millimeter wave broadband dual circularly polarized antenna and an array. The millimeter wave broadband dual circularly polarized antenna comprises two layers of microwave medium substrates, a bonding medium, a grounding metal plate and a coaxial feed probe. Two E-shaped patch antennas, four small square patches and an L-shaped metal strip are printed on the upper surface of the upper-layer dielectric substrate, gaps are obliquely formed in the centers of the small square patches, the L-shaped metal strip is used for increasing port isolation, and the E-shaped patches excite the four small square patches to achieve the broadband radiation characteristic. And two coaxial feed probes are respectively connected with two output ends with 90-degree phase difference of the 3dB directional coupler on the lower surface of the lower-layer microwave dielectric substrate, sequentially penetrate through the lower-layer microwave dielectric substrate, the bonding medium, the grounding metal plate and the upper-layer microwave dielectric substrate, and are electrically connected with the two E-shaped patch antennas, so that circularly polarized radiation is realized. According to the invention, the circularly polarized antenna with wide beam width, wide impedance bandwidth, wide axial ratio bandwidth and dual polarization characteristics is realized, and the circularly polarized antenna is suitable for potential application requirements of millimeter wave frequency band wireless communication and satellite communication.

The invention provides a K-band broadband dual circularly polarized antenna applied to the satellite internet, and belongs to the field of circularly polarized antennae, the K-band broadband dual circularly polarized antenna comprises a radiation unit, a first dielectric layer, a metal ground layer, a bonding layer, a second dielectric layer and a feed network which are stacked from top to bottom, the radiation unit comprises two first radiation patches and two second radiation patches, the first radiation patch is provided with two long rectangular grooves which are vertically intersected, the second radiation patch is provided with two short rectangular grooves which are vertically not intersected, the first radiation patch and the second radiation patch are respectively connected to the metal ground layer through metal columns, and the metal ground layer is provided with a first coupling gap and a second coupling gap. A first rectangular groove, a second rectangular groove, a third rectangular groove and a fourth rectangular groove are formed in the metal ground layer, and the feeder network comprises a first microstrip feeder and a second microstrip feeder; the antenna structure is low in profile, wide impedance bandwidth can be achieved, and the two feed ports can work in the same frequency range.

Aspects of this disclosure relate to an antenna cell. An antenna cell may include a first circularly polarized dipole antenna that includes a first pair of differently fed conductive elements, the first circularly polarized dipole antenna being right hand circularly polarized. The antenna cell may include a second circularly polarized dipole antenna that includes a second pair of differently fed conductive elements, the second circularly polarized dipole antenna being left hand circularly polarized. The first circularly polarized dipole antenna and the second circularly polarized dipole antenna may be geometrically orthogonal and configured to radiate concurrently. The first circularly polarized dipole antenna may be positioned adjacent to the second circularly polarized dipole antenna.

The invention aims to provide a broadband circularly polarized antenna loaded with a novel coupling structure, and belongs to the technical field of circularly polarized antennas. The antenna comprises a radiation structure, a supporting structure, a coaxial feed structure and a reflecting plate, wherein the radiation structure comprises a parasitic radiation patch, a cross dipole antenna and a radiation dielectric substrate; by innovatively designing the parasitic radiation patch, the bandwidth of the circularly polarized antenna can reach 53.3% when the circularly polarized antenna is in the working frequency band of 1.046-1.846 GHz, and the maximum gain of the circularly polarized antenna can reach 7.3 dB.

The invention provides a wide-angle scanning dual-circularly-polarized phased-array antenna unit, which belongs to the field of dual-circularly-polarized antennas and comprises a first dielectric layer, a second dielectric layer and a third dielectric layer which are sequentially stacked, the antenna radiator is arranged on the side, away from the second dielectric layer, of the first dielectric layer, the antenna radiator comprises four radiation patches, each radiation patch comprises a metal patch and a loading branch knot, and each metal patch is provided with a slotted structure; the first metal ground layer is clamped between the first dielectric layer and the second dielectric layer, and a cross coupling gap and a first coupling gap and a second coupling gap which are perpendicular to each other are formed in the first metal ground layer; the U-shaped feeder line is clamped between the second dielectric layer and the third dielectric layer, and two ends of the U-shaped feeder line are respectively connected with a coaxial feed column penetrating through the third dielectric layer; the second metal ground layer is arranged on the side, away from the second dielectric layer, of the third dielectric layer; an array is also provided; the problem that a traditional circularly polarized antenna is narrow in impedance bandwidth and limited in polarization is solved.

A dual circularly polarized antenna array includes an insulating substrate, an M number of feed modules, and an M number of antenna groups. The insulating substrate includes an M number of preset points. The M antenna groups are respectively disposed on the M preset points, and each antenna group includes four antennas. Any two opposite ones of the four antennas jointly have a 180-degree rotational symmetry relative to a corresponding one of the M preset points. Each antenna includes a conductive sheet, and a first feed point and a second feed point that are electrically coupled to one of the M feed modules. The first feed points of the four antennas can jointly generate a left-hand circular polarization through one of the M feed modules, and the second feed points of the four antennas can jointly generate a right-hand circular polarization through one of the M feed modules.

The invention belongs to the field of antennas, and discloses a millimeter wave broadband circularly polarized antenna array and a manufacturing method thereof. The fourth metal layer is used for receiving and transmitting electromagnetic waves based on the sequential rotation feed network; the fourth metal layer is also used for serving as a ground plane of the grounding coplanar waveguide; the third dielectric layer is used for transmitting the received electromagnetic waves to the third metal layer; metal via holes are introduced into the third dielectric layer to realize the performance of the grounding coplanar waveguide; the third metal layer is used for coupling electromagnetic waves to the first radiation layer and the second radiation layer based on slot coupling; the third metal layer is also used for serving as a ground plane of the grounded coplanar waveguide; the first radiation layer and the second radiation layer are respectively used for directionally radiating electromagnetic waves to a free space; metal via holes are introduced into the first radiation layer and the second radiation layer, so that the performance of the magnetoelectric dipole antenna is realized; the millimeter wave antenna meets the requirement of a millimeter wave mobile communication working frequency band, and has the characteristics of large axial ratio bandwidth, easiness in processing, low loss and stable directional diagram.

The invention relates to the technical field of wireless communication and antenna design, and discloses a circularly polarized antenna based on a multi-mode frequency selective surface, an integration method and a terminal. A wave absorbing layer, a first diffuse reflection layer and a second diffuse reflection layer are sequentially integrated on the circularly polarized antenna body from top to bottom. Wherein the circularly polarized antenna body has a working frequency band, the wave absorbing layer has a wave absorbing frequency band, the first diffuse reflection layer has a first diffuse reflection frequency band, and the second diffuse reflection layer has a second diffuse reflection frequency band; the working frequency band, the wave absorbing frequency band, the first diffuse reflection frequency band and the second diffuse reflection frequency band are efficiently integrated, the requirements for high-flexibility radiation and strong electromagnetic stealth are met, and the design of the multi-mode radiation stealth integrated array antenna is achieved. According to the invention, the out-of-band radar cross section (RCS) can be efficiently suppressed while the radiation efficiency in the working band of the antenna is not influenced, and the fusion target of high-performance radiation and ultra-wideband RCS suppression stealth is fundamentally completed.

The invention discloses an ultra-wideband compact circularly polarized antenna based on a miniaturized phase shifter, and belongs to the technical field of antenna engineering. According to the antenna, the feed network and the Vivaldi antenna are cascaded, so that the antenna has the characteristic of wide bandwidth; the broadband matching characteristic is realized by designing a metal coupling sheet, a zigzag structure, an inverted L-shaped balun and the like; a novel miniaturized ultra-wideband 90-degree phase shifter is designed by adopting an n network and a negative group delay circuit; and the Vivaldi antenna layer and the feed network layer both adopt a PCB (Printed Circuit Board) technology, so that the processing is easy, and the cost is low. Compared with a traditional phase shifter, the size of the phase shifter is reduced by 75%, and the size of the phase shifter is 67 mm * 44.5 mm (0.071 lambda 1 * 0.047 lambda 1). Meanwhile, a simulation result shows that the provided circularly polarized antenna has a 10dB impedance bandwidth of 0.32 to 1.2 GHz (3.75: 1) and a 3dB axial ratio bandwidth of 0.32 to 1.15 GHz (3.59: 1).

Various embodiments relate to a radar system, including: a transmitter; a transmit antenna connected to the transmitter, wherein the transmit antenna is a circular polarized antenna; a receiver; a receive antenna connected to the receiver, wherein the receive antenna is a dual polarization antenna having a main lobe and ambiguity sidelobes; wherein the radar system is configured to: transmit a first and second radar signal with first and second circular polarizations in first and second modes; receive reflected first and second radar signals; process the received first and second radar signals to detect a target and to produce first and second mode target powers; comparing the first mode target power to the second mode target power to determine which lobe of the antenna in which the target is located.

The present disclosure relates to the technical field of antennas, and provides a circularly polarized antenna, an array antenna, and a communication terminal. The circularly polarized antenna comprises a radiation patch, a grounding layer, a dielectric layer, and a power division module; the radiation patch and the grounding layer are oppositely arranged, and the dielectric layer is located between the radiation patch and the grounding layer; the power division module comprises an input end and two output ends, and the phase difference between output signals of the two output ends is 90°; the radiation patch comprises a first feed point and a second feed point, the first feed point is electrically connected to one output end, and the second feed point is electrically connected to the other output end; the virtual connection line between the first feed point and the center of the radiation patch is a first line, the virtual connection line between the second feed point and the center of the radiation patch is a second line, and the included angle between the first line and the second line is less than 90°. The circularly polarized antenna has a small size and a compact structure.

The invention discloses a terahertz wave band circularly polarized antenna based on sequential rotation feeding, and belongs to the field of radio frequency front-end devices. The circularly polarized antenna is composed of four microstrip patches, chamfers located on a radiation patch, a microstrip line, a microstrip line feed port, a sequential rotation feed network, a dielectric substrate, a metal ground backboard and a microstrip line matching structure. A 90-degree phase difference is generated by strictly designing the electrical length from each port to the feed network to realize circular polarization performance, right-handed circularly polarized waves are radiated, the radiation gain is 10.47 dB, the 3dB axial ratio bandwidth is greater than 8GHZ, the 3dB axial ratio range exceeds 90 degrees, and the complete half-power beam width is covered. The antenna adopts the microstrip line for feeding, the loss of the microstrip line is small, the microwave transmission characteristic is good, and the antenna radiation efficiency is high. The antenna adopts a single-layer board design, has no complex feed network, and is simple in structure and convenient to manufacture.

A broadband dual-feed circularly-polarized antenna includes first, second and third substrate modules (1, 3, 4) stacked from top to bottom. When the antenna operates in a transmit mode, signals fed to first and second feed lines (41, 42) of the third substrate module (4) are electromagnetically coupled to first and second slots (31, 32) of the second substrate module (3), then to a radiator (21) of the first substrate module (1), and finally to a parasitic element (11) of the first substrate module (1), and the parasitic element (11) transmits an electromagnetic wave. When the antenna operates in a receive mode, the parasitic element (11) receives an electromagnetic wave, and the electromagnetic wave is electromagnetically coupled to the radiator (21), then to the first and second slots (31, 32), and finally to the first and second feed lines (41, 42).

The application discloses a Ka dual-circular polarization antenna unit and a flat plate array antenna, which comprises, from top to bottom, a radiation patch layer, a slot coupling layer, a waveguide transmission layer and a feed network layer; a plurality of microstrip line structures are arranged on the radiation patch layer, the microstrip line structure comprises a first microstrip line and a second microstrip line, and the first microstrip line and the second microstrip line form a 90-degree phase difference of electric field orthogonal components; the slot coupling layer comprises a second substrate, the second substrate is provided with a source collapse groove corresponding to the microstrip line structure, and the slot coupling layer and the radiation patch layer are relatively displaced under the action of an external force; the microstrip line structure corresponding to the source collapse groove is switched between a left-handed circular polarization microstrip line and a right-handed circular polarization microstrip line through the relative displacement; and the source collapse groove and the first substrate form a linear polarization feed source. According to the application, each dual-circular polarization feed source is used to form dual-circular polarization, and a polarization partition plate of a feed source waveguide is not relied on, so that the thickness of the antenna structure is reduced.

The invention relates to the technical field of dual circularly polarized antennas, and discloses a dual circularly polarized antenna, a sub-array, a one-dimensional phased array and a planar phased array. The antenna comprises a direct dual-circularly-polarized radiation structure layer, a circularly-polarized electromagnetic metasurface coupling layer and a circularly-polarized electromagnetic metasurface parasitic layer which are sequentially stacked from bottom to top. The broadband wide-angle scanning dual-circularly polarized phased array provided by the invention has the advantages of low cost, low profile, high radiation efficiency, broadband, dual-circularly polarized wide-angle beam scanning and the like, and is suitable for advanced satellite internet communication and navigation application.

The invention discloses a low-orbit communication satellite two-dimensional switching system, and belongs to the technical field of low-orbit satellite communication. According to the system, a load monitoring unit, a route switching unit, an inter-satellite processing unit, an access network processing unit and a feed processing unit work cooperatively. The load monitoring unit calculates the relative position of the satellite and the gateway station, generates an antenna pointing angle and stores a gateway station position table; the route exchange unit completes information forwarding, route detection and flow statistics; the inter-satellite processing unit realizes signal processing and mode conversion, and adopts a phased-array antenna to support fast beam pointing; the access network processing unit processes a user signal and supports a multi-mode antenna; the feed processing unit adopts a right-handed circularly polarized antenna and is isolated from left-handed polarization of an inter-satellite link, so that same-frequency parallel transmission is realized. Through a two-dimensional cooperative control mechanism, an intelligent judgment algorithm and a ground-satellite cooperative transmission architecture, the reliability and the resource utilization rate of a satellite communication network are remarkably improved.

The invention provides a wide-axial-ratio circularly polarized antenna, and relates to the technical field of antennas, and the antenna comprises a dielectric substrate, and the edge of the dielectric substrate is uniformly provided with metalized via holes; the radiation patch covers the upper surface of the dielectric substrate, and a first circular gap is formed in the middle of the radiation patch; the feed network is located on the lower surface of the dielectric substrate; the metal cover comprises a metal back cavity, the metal cover covers the bottom of the feed network and the bottom of the dielectric substrate, and the feed network is located in the metal back cavity; the radio frequency connector passes through the dielectric substrate and the radiation patch and is welded on the upper surface of the radiation patch; one end of the coaxial cable is connected to the lower end of the radio frequency connector, and the other end of the coaxial cable penetrates through the metal back cavity and is connected with the metal cover; the invention is used for solving the technical problems of low gain, narrow axial ratio beam width, complex design and manufacture and overlarge antenna size of the existing circularly polarized antenna.

The invention provides a circularly polarized antenna based on an artificial magnetic conductor and electronic equipment, and relates to the technical field of wireless communication. The circularly polarized antenna is composed of a coaxial line, a first dielectric substrate, a second dielectric substrate and a grounding plate, the first dielectric substrate, the second dielectric substrate and the grounding plate are arranged from top to bottom, the first dielectric substrate, the second dielectric substrate and the grounding plate are parallel and mutually spaced, an upper-layer radiation unit is printed on the upper surface of the first dielectric substrate, and a lower-layer radiation unit is printed on the lower surface of the first dielectric substrate. An outer conductor of the coaxial line is connected with the lower-layer radiation unit, an inner conductor of the coaxial line penetrates through the first dielectric substrate and is connected with the upper-layer radiation unit, a plurality of rows and columns of metasurface units are printed on the upper surface of the second dielectric substrate, the metasurface units comprise multiple types, and the multiple types of metasurface units respectively have different shapes. Therefore, the bandwidth and the profile height of the circularly polarized antenna are well considered, and the performance of the circularly polarized antenna is better.

The invention provides a circularly polarized antenna, an array antenna and a communication terminal, and relates to the technical field of antennas. The circularly polarized antenna comprises a radiation patch, a grounding layer, a dielectric layer and a power division module. The radiation patch and the grounding layer are oppositely arranged, and the dielectric layer is located between the radiation patch and the grounding layer; the power division module comprises an input end and two output ends, and the phase difference of output signals of the two output ends is 90 degrees; the radiation patch comprises a first feeding point and a second feeding point, the first feeding point is electrically connected with one of the output ends, and the second feeding point is electrically connected with the other output end; a virtual connecting line between the first feeding point and the center of the radiation patch is a first line, a virtual connecting line between the second feeding point and the center of the radiation patch is a second line, and an included angle between the first line and the second line is smaller than 90 degrees. The circularly polarized antenna is small in size and compact in structure.

The invention discloses a method for continuously establishing a low-orbit satellite feed link, and belongs to the field of low-orbit satellite communication systems. According to parameters such as a task model, a gateway station position, a satellite track and the like, control information such as an equipment startup and shutdown instruction, a port switching instruction of a radio frequency channel and an antenna, antenna pointing angle calculation, route updating report indication and the like can be automatically generated, data flow guidance is completed, and relay communication of a satellite between two gateway stations is realized. In the relay process, the situation that the flow is reduced to 50% in a very short time only exists, and the situation of link interruption does not exist; considering that the mode is realized based on a dual circularly polarized antenna, even if the flow is reduced to 50%, the rate is still the same as that of a traditional method. The configuration is adaptive to satellite platforms with various functions, and the requirements of satellite-ground high-capacity communication and rapid data return are met.

The utility model belongs to the technical field of wireless communication, and provides a small circularly polarized antenna, which comprises a dielectric substrate, a radiation unit mechanism arranged above the dielectric substrate and used for wireless communication, and a welding mechanism arranged below the dielectric substrate and used for antenna installation. The working performance of the circularly polarized antenna is greatly improved through the arranged radiation unit mechanism, the antenna size is reduced to 1 / 9 wavelength and far smaller than 1 / 2 wavelength by adopting the antenna scheme of the short circuit needle and the double snakelike lines, and circular polarization is realized by adopting the size differential of the two groups of miniaturized units. Wherein the position of the feed probe determines left-hand circular polarization and right-hand circular polarization, the arranged circular polarization antenna structure is more miniaturized and better suitable for various scenes, and during production, a high dielectric constant material is not needed to be used as a dielectric substrate, meanwhile, complex processes such as plate edge copper plating are not needed, and the antenna cost is greatly reduced.

A broadband dual-feed circularly-polarized antenna includes first, second and third substrate modules. The first substrate module includes a parasitic element, and a radiator disposed below the parasitic element. The second substrate module is stacked below the first substrate module, and is provided with first and second slots. The third substrate module is stacked below the second substrate module, and includes first and second feed lines. When the antenna operates in a transmit mode, signals fed to the first and second feed lines are electromagnetically coupled to the first and second slots, then to the radiator, and finally to the parasitic element, and the parasitic element transmits an electromagnetic wave. When the antenna operates in a receive mode, the parasitic element receives an electromagnetic wave, and the electromagnetic wave is electromagnetically coupled to the radiator, then to the first and second slots, and finally to the first and second feed lines.

A power feed circuit for a circularly polarized antenna includes a synthesizing-distributing unit and a phase shift unit. The synthesizing-distributing unit distributes input signals to two paths with the same phase and same amplitude. The phase shift unit has two phase shift circuits connected respectively between the two paths distributed by the synthesizing-distributing unit and two feed points of a circularly polarized antenna. The phase shift unit outputs signals whose phase difference is 90° to the two feed points and of the circularly polarized antenna.

The invention provides a single-feed broadband circularly polarized patch antenna for navigation. The single-feed broadband circularly polarized patch antenna comprises a first dielectric plate, a second dielectric plate, a third dielectric plate, a metal shielding box and a coaxial cable, an antenna radiator is printed on the first dielectric plate, a coplanar waveguide structure is printed on the second dielectric plate, and a feed structure is printed on the third dielectric plate; the coaxial cable feeds power to the coplanar waveguide structure on the second dielectric plate through the feed structure on the third dielectric plate; and the coplanar waveguide structure on the second dielectric plate feeds the antenna radiator on the first dielectric plate in a coupling manner. The coplanar waveguide structure and the patch antenna are combined, the axial ratio bandwidth of the single-feed circularly polarized antenna is successfully improved through the coplanar waveguide coupling feed technology, the maximum working bandwidth of the single-feed circularly polarized antenna is improved by more than one time, and the problem that the single-feed circularly polarized antenna is narrow in bandwidth and difficult to apply to satellite navigation is solved. And the method has extremely high applicability and flexibility in multi-system and multi-band satellite navigation application.

The invention relates to the technical field of electromagnetic fields and microwaves, and discloses a broadband high-integration-level dual-circularly polarized antenna which comprises an ultra-wideband self-compensation structure plane radiation surface, an ultra-wideband special-shaped reflection cavity, an ultra-wideband impedance transformer and an ultra-wideband integrated dual-polarized feed network. Wherein the ultra-wide-band self-compensation structure plane radiation surface is arranged at the forward position of the ultra-wide-band special-shaped reflection cavity, and radiation of ultra-wide-band dual circularly polarized waves is executed; the ultra-wide-band special-shaped reflection cavity executes matching and forward reflection of ultra-wide-band backward electromagnetic waves; the ultra-wideband impedance transformer executes radio frequency connection and impedance conversion between the ultra-wideband self-compensation structure plane radiation surface and the ultra-wideband integrated dual-polarization feed network; the ultra-wideband integrated dual-polarization feed network performs conversion from an unbalanced signal to a balanced signal and formation of a dual-circularly polarized signal. Unification of directional diagrams, polarization, axial ratio and standing wave bandwidth of more than 15: 1 frequency multiplication can be realized, and the ultra-wideband dual-circular polarization antenna has the advantages of ultra-wideband, miniaturization, constant wave beam and dual-circular polarization.

A circularly polarized antenna includes a plurality of radiation units configured in a rotational symmetry manner, and a feed network connected to the plurality of radiation units. Each radiation unit comprises a patch element and a short circuit wall which is connected with the patch element and is suitable for enabling the patch element to be short-circuited. Different from the traditional sequential phase feed, the sequential phase feed only depends on the physical length of the delay line to realize the phase change, and the reactance loading feed line ingeniously utilizes the equivalent capacitance and inductance to change the phase. The method does not need to depend on a long delay line, and stable phase difference can be realized in a wide frequency band.

The present application relates to the technical field of antennas, and provides a circularly polarized array antenna and a wireless communication device. The array antenna comprises: a first substrate, any antenna unit symmetrically arranged on the first substrate being a circularly polarized antenna unit; a second substrate, at least one first coupling gap being formed in any resonant cavity symmetrically arranged on the second substrate, and any first coupling gap being overlapped with a first target projection corresponding thereto; and a third substrate provided with an H-shaped junction and a port line, the H-shaped junction and the port line being communicated with each other, at least one second coupling gap being formed in the H-shaped junction, and any second target projection being located in the resonant cavity corresponding thereto. The circularly polarized array antenna provided by the present application can obtain relatively good batch consistency, has an extremely stable radiation pattern, good polarization purity and high radiation efficiency, and can achieve high-stability connection and high-efficiency transmission of mobile communications in millimeter wave bands.

A circularly polarized antenna that includes a plurality of radiating elements configured in a rotationally symmetric pattern, and a feed network connected to the plurality of radiating elements. Each radiating element contains a patch element, and a shorting wall connected to the patch element and adapted to short the same. Unlike traditional sequential-phase feed, which simply relies on the physical length of the delay line to achieve phase progression, the reactance-loaded feed line strategically utilizes the equivalent capacitor and inductor to shift the phase. This method eliminates the reliance on the long delay lines and realizes stable phase differences over a wide bandwidth.