1203 results about "Feed network" patented technology

The embodiment of the invention provides a base station antenna, and relates to the technical field of communication. The base station antenna comprises a housing, a phase shifter and a combiner. The shell is provided with combining cavities and phase shifting cavities, the two phase shifting cavities are arranged side by side in the first direction, the combining cavities are arranged on the same side of the two phase shifting cavities in the second direction in a stacked mode, the first direction is perpendicular to the second direction, and the size of the combining cavity in the first direction is larger than the size of any phase shifting cavity and smaller than the sum of the sizes of the two phase shifting cavities; the phase shifter comprises two phase shifting modules corresponding to the phase shifting cavities, each phase shifting module is arranged in the corresponding phase shifting cavity, and each phase shifting module is provided with a phase shifting network; the combiner is arranged in the combining cavity and provided with a combining network, and the combining network is connected with the two phase shift networks. According to the base station antenna provided by the embodiment of the invention, multi-frequency, miniaturization and integration are realized, the gain, radiation efficiency and sidelobe performance of the base station antenna are optimized, the feed network is simple, and the resonance phenomenon is avoided.

The invention discloses a directional diagram reconfigurable antenna capable of switching feed through an MEMS switch, and belongs to the field of radio frequency front-end devices. The directional diagram reconfigurable antenna is composed of a micro-strip radiation unit, a guide parasitic unit, a composite beam ohmic contact type MEMS switch, a one-to-four feed network, a direct current bias line, a test patch bonding pad, a coplanar waveguide, a gradual change micro-strip line, a dielectric substrate and a metal ground backboard. The two-stage MEMS switches are erected on the one-to-four feed network, when the two-stage switches on a certain feeder line are turned on, radio frequency current can flow to the corresponding basic radiation unit through the feeder line to generate an inclined beam facing the quadrant, and the two basic radiation units on the front side can be enabled by simultaneously turning on the four switches on the front side to generate an inclined beam facing the quadrant. And generating an inclined beam in the front side positive direction. The antenna adopts a single-layer board design, the dielectric substrate does not need to be punched, the structure is simple, manufacturing is convenient, the adopted MEMS switch is small in loss and high in isolation degree, and rapid printing and manufacturing can be achieved through the surface etching process.

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.

The present invention discloses a high polarization isolation dual-polarization tightly coupled ultra-wideband phased array antenna. It includes a dipole unit, a coaxial feed line, a metal reflective floor, a fishbone cross-shaped patch and a cross-shaped metal wall; the dipole unit includes a horizontal and two vertical dielectric substrates, and the vertical dielectric substrates are orthogonal to each other; two groups of coplanar and mutually perpendicular butterfly-shaped dipole units are printed on the lower surface of the horizontal dielectric substrate; a fishbone cross-shaped patch is embedded at the intersection of the ends of the dipole units, and there is a gap between the patch and the end of the dipole; a patch with an etched groove line is printed on one side of the vertical dielectric substrate; the patch is connected to the dipole; the microstrip line on the upper surface of the horizontal dielectric substrate is connected to the inner conductor of the coaxial feed line, and the dipole is connected to the outer conductor of the coaxial feed line; the fishbone cross-shaped patch is in contact with the cross-shaped metal wall. The present invention realizes high polarization isolation and low cross-polarization of the dual-polarization tightly coupled ultra-wideband phased array in a lower frequency band without the need for a complex feeding network.

The present invention discloses a wide microstrip antenna array based antenna system for millimeter wave applications. The microstrip antenna array based antenna system of the present invention includes plurality of patch antennas and each of the patch antennas includes a U-slot of unequal arms. This patch antenna with the U-slot acts as the array element. The array elements are placed in a linear array at a distance of λ / 2 from each other on the antenna substrate to achieve desired scan performance. The microstrip corporate feed network with T-junction power divider is used. The antenna elements are fed by electromagnetic coupling with the feed network. The antenna array with dummy elements on both sides of the linear array together with an extra ground plane is used to achieve improved array performance with high main lobe gain and reduced side lobe.

The invention relates to the technical field of phased-array antennas, in particular to a common-caliber simultaneous multifunctional phased-array antenna wave control system, which uses a common-caliber antenna array, comprises N phased-array antennas and N TR components, and realizes caliber sharing through staggered layout. And a wave control system is used for calculating a wave beam control command by utilizing embedded software, controlling phase shift and attenuation of the TR component and processing internal and external interface communication. The feed network is used for signal distribution, and uniform distribution and transmission efficiency are ensured. A Beidou system is used for providing time synchronization and positioning information, and accurate beam control of the beam control system in a complex electromagnetic environment is guaranteed. A channel is used for receiving antenna array signals, control signals are sent to the TR assembly, and accurate transmission of the signals is ensured. According to the invention, the problem that the existing wave control system cannot perform multi-beam control on the common-caliber multifunctional phased-array antenna at the same time is solved, and the target of multi-beam control in the single shared antenna caliber is realized.

The utility model relates to an antenna unit, an antenna array, an antenna device and a base station system.The antenna unit comprises an insulating base material plate, a feed network, a metal ground layer, a reflecting plate, an insulating base material arm, a radiation arm and a feed balun, the feed network is connected to the insulating base material plate, the metal ground layer is connected to the insulating base material plate, and the metal ground layer and the feed network are located on the same side of the insulating base material plate; at least part of the reflecting plate is arranged on the side, away from the insulating base material plate, of the metal ground layer, the reflecting plate is in coupling connection with the metal ground layer and the feed network, the insulating base material arm is connected to the insulating base material plate and located on the side, away from the feed network and the metal ground layer, of the insulating base material plate, and the radiation arm is arranged on the insulating base material arm. The feed balun is arranged on the insulating base material arm, one end of the feed balun is electrically connected with the feed network, the other end of the feed balun is electrically connected with the radiation arm, and the feed balun is used for feeding the radiation arm. According to the antenna unit, the dielectric loss of the feed network can be reduced, the coupling between the feed network and the radiation arm is reduced, and the radiation performance and isolation of the antenna unit are improved.

The utility model discloses a double-frequency circularly polarized fusion antenna with a large frequency ratio, which comprises a first dielectric plate and a second dielectric plate, the first dielectric plate is positioned above the second dielectric plate, and the lower surface of the first dielectric plate is a copper-clad layer serving as a grounding plate. And a first metal radiator, a second metal radiator, a third metal radiator and a fourth metal radiator are arranged on the upper surface of the antenna. One end, close to the center of the dielectric plate, of the radiator is loaded with a metal column and connected with the grounding plate, and one end, away from the center of the dielectric plate, of the radiator is loaded with a millimeter wave metal probe. A microwave feed network and four 180-degree phase difference power dividers are arranged on the lower surface of the second dielectric plate, an output port of the microwave feed network is connected with the four microwave metal probes, and output ports of the 180-degree phase difference power dividers are connected with the eight millimeter wave metal probes. The dual-frequency circular polarization antenna has a dual-frequency circular polarization characteristic, can effectively reduce the influence of a multipath effect, and achieves the multiplexing of the radiator, thereby reducing the demands for the space resources of communication equipment.

The invention provides an antenna device and a base station antenna system, the antenna device comprises a reflection plate, a radiation unit and a feed network, and the reflection plate is provided with a first opening. The radiation unit comprises a radiation body and a feed branch knot, and the radiation body is coupled with the feed branch knot. The radiating body is arranged on one side of the reflecting plate, and a gap is formed between the radiating body and the reflecting plate. And at least part of the feed branch is arranged in the first opening in a penetrating manner. The feed network is arranged on the side, away from the radiation unit, of the reflecting plate, a gap is formed between the feed network and the reflecting plate, and the feed network is coupled with the feed branch knot. According to the antenna device, the radiating body located on one side of the reflecting plate penetrates through the first opening in the reflecting plate through the feed branch knot and then is in coupling connection with the feed network located on the other side of the reflecting plate, the structure of the antenna device is simplified, the number of parts is reduced, the weight is reduced, and overall assembly of the antenna device is facilitated.

The present application provides a frequency selective surface structure, an antenna system, and a base station. The frequency selective surface structure comprises a frequency selective surface, a feed network, and a phase shifter. The frequency selective surface comprises a metal layer, the phase shifter is electrically connected to the feed network, and the phase shifter and the feed network are integrated into the metal layer of the frequency selective surface. When the phase shifter does not obstruct an antenna beam, the frequency selective surface structure may reduce transmission loss, and both coverage range and transmission quality of an antenna signal may be considered, solving the problem of difficult layout of a phase shifter in a multi-band integrated antenna system.

The invention discloses a beam switching antenna system based on a reconfigurable technology. The beam switching antenna system based on the reconfigurable technology comprises a multi-unit antenna array, a Nolan matrix feed network and a reconfigurable power divider. The reconfigurable power divider in the beam switching antenna system based on the reconfigurable technology can switch different working states, and the signal energy is further distributed by the Nolan matrix feed network, so that the output signal meets the amplitude and phase conditions of a single beam, a double beam or a wide beam to feed the multi-unit antenna array; therefore, flexible switching among a single beam, double beams and a wide beam is realized, and the method has the advantages of low system overhead, low power consumption, rich beam types and flexible switching. The method is widely applied to the technical field of wireless communication.

The invention belongs to the technical field of communication, and particularly relates to an ultra-wideband miniaturized Vivaldi antenna. The antenna comprises a dielectric substrate, wherein the upper surface of the dielectric substrate comprises a main body Vivaldi antenna, four resistors, two rectangular metal patches and an artificial surface plasma, wherein the main body Vivaldi antenna is provided with an exponential gradually-changed slot; a feed network is arranged on the lower surface and comprises six impedance conversion microstrip transmission lines, a fan-shaped transmission line and a circular groove; the main body antenna and the dielectric substrate are placed in a centered alignment manner, the four resistors are placed at the tail end of the main body antenna, and the rear sides of the resistors are connected with the two rectangular patches; the artificial surface plasma is placed in the main body antenna gradual change gap; and the multi-section impedance transformer and the microstrip-to-slot line structure of the feed network are aligned with the circular slot of the main body antenna. According to the invention, the ultra wide band, miniaturization and high radiation gain are realized by designing the main body antenna, slotting the edge, loading the resistor, carrying out the artificial surface plasma and the like. The working frequency band of the antenna ranges from 0.2 GHz to 18 GHz, and the antenna has the characteristic of miniaturization.

The invention relates to a circularly polarized quasi-absorption filtering phased-array antenna. A unit of the antenna comprises a multi-layer dielectric substrate, a semi-cured layer, a metal floor, a stacked patch and an orthogonal H-shaped gap, the first dielectric substrate is provided with a parasitic square loop, the second dielectric substrate is provided with a cross-shaped strip, and radiation zero points are introduced to the upper and lower edges of a passband respectively; the 3dB orthogonal directional coupler and the L-shaped feeder form a feed network, circularly polarized radiation is realized through slot coupling, and an isolation port of the 3dB orthogonal directional coupler is connected with a 50-ohm resistor, so that the energy of a lower stop band is absorbed, the energy of an upper stop band is reflected, and a quasi-absorption filtering characteristic is presented; the antenna is compact in structure and easy to process, has wide axial ratio bandwidth and good filtering performance, and when array scanning is 0-45 degrees, the overlapping impedance bandwidth is 12%, the axial ratio bandwidth is 15.8%, and the maximum scanning loss is 2.3 dB; the antenna is compact in structure and easy to process, has wide axial ratio bandwidth and good quasi-absorption filtering performance, and has huge potential in millimeter wave satellite communication application.

An electronic device is provided. The electronic device includes an antenna substrate and an antenna array comprising a sub array, the sub array includes a plurality of antenna elements, feeding network circuitry including a first power divider for first polarization and a second power divider for second polarization, which differs from the first polarization, and network circuitry for decoupling of a first signal of the first power divider and a second signal of the second power divider, wherein the sub array is disposed on a first surface of the antenna substrate, and wherein the feeding network circuitry disposed on the first side or a second side opposite to the first side of the antenna substrate, and wherein the network circuitry for decoupling is disposed in a region between the first power divider and the second power divider in the first side or the second side of the antenna substrate.

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 provides an active antenna unit which can be applied to communication equipment with a transmitting-receiving common antenna. The active antenna unit comprises N radio frequency antenna links and L self-interference cancellers, N is an integer greater than 1, and L is an integer less than or equal to N, for example, L is equal to N. Each radio frequency antenna link comprises a transmitting channel, a receiving channel, a feed network and an antenna subarray. The N radio frequency antenna links meet at least one of the following conditions: the routing of the feed networks of at least two radio frequency antenna links is different; or, the N antenna sub-arrays are provided with isolation assemblies which are used for isolating signals among the N antenna sub-arrays. In addition, a self-interference canceller is connected between the transmitting channel and the receiving channel of at least one link and used for cancelling signals from the transmitting channel in the receiving channel of the link where the self-interference canceller is located. Therefore, the self-interference cancellers do not need to be connected between the transmitting channels and the receiving channels of different links in the N links, the number of the self-interference cancellers can be reduced, and the circuit complexity is reduced.

The invention discloses a phased-array antenna, the phased-array antenna comprises a plurality of antenna module units, each antenna module unit comprises a PCB and an integrated radome module, and the integrated radome module is arranged on the surface of the PCB; a feed network, a dielectric substrate and an antenna radiation patch are arranged on the PCB, and the PCB is used for realizing feed and partial radiation functions; the integrated antenna housing module comprises a honeycomb support, an antenna patch, a PET film and an antenna housing, the antenna patch is etched on the PET film, the honeycomb support, the PET film and the antenna housing are mutually connected to form an integrated structure, and the integrated antenna housing module is used for realizing wave transmission, bandwidth broadening and impedance matching. According to the phased-array antenna, the use cost of PCB materials is reduced, and the problem that the electrical performance of the phased-array antenna is reduced due to dielectric loss caused by excessive use of PCB materials is solved.

The invention discloses a broadband circular polarization metasurface antenna with a low radar cross section. The broadband circular polarization metasurface antenna is composed of a top layer 4 * 4 antenna array, a middle layer metal ground, a bottom layer one-to-sixteen sequential rotation feed network and two dielectric plates among the three layers. The antenna array is composed of four subarrays which are arranged in a 2 * 2 period, and the four groups of subarrays are symmetrical up and down and left and right along the center of the antenna array and are arranged in a chessboard shape. Each antenna unit in the antenna array comprises a bow-tie-shaped metal patch, and the patch is connected with the output end of the feed network at the bottom layer through a first metalized through hole; the feed network is composed of three one-to-two second-order Wilkinson power dividers, four 90-degree phase shifters, twelve T-shaped power dividers and a plurality of sections of 50-ohm microstrip lines. Through fusion design of the antenna and the metasurface, the problem that in the design process of the metasurface antenna with the low radar cross section, the antenna aperture is increased due to the fact that the antenna and the metasurface are independently designed firstly and then integrated is solved, and the low radar cross section characteristic of the broadband and the high-performance circular polarization radiation characteristic are achieved.

The invention discloses a circularly polarized dielectric resonator two-dimensional beam scanning phased-array antenna based on liquid crystal, and belongs to the technical field of microwave antennas. The antenna comprises an elliptic cylindrical dielectric resonator radiation structure, a sequential rotation feed network and a liquid crystal phase shifter structure based on a glass plate, wherein the elliptic cylindrical dielectric resonator radiation structure and the sequential rotation feed network are arranged on a flexible printed circuit board (FPC); the radiation structure and the feed network which are arranged on the FPC comprise a radiation unit, an FPC layer and a feed network; the liquid crystal phase shifter comprises a glass dielectric substrate, a liquid crystal layer, an inverted spiral microstrip line and a bias network; the elliptic cylindrical dielectric resonator radiation structure realizes wide impedance bandwidth and wide axial ratio bandwidth; the antenna array also uses a sequential rotation method, the axial ratio characteristic of the phased-array antenna is further improved, and the coupling feed structure is simplified by using the design that the L-shaped microstrip line is connected with the inverted spiral microstrip line after sequential rotation.

An antenna system includes a first antenna and a second antenna. The first antenna includes a first radiating element, a first frequency selective surface, and a first feed network. The first radiating element is disposed on a side of the first frequency selective surface, and the second antenna is disposed on a side that is of the first frequency selective surface and that is away from the first radiating element. The first frequency selective surface includes a plurality of first strip-shaped structures and a plurality of second strip-shaped structures. The first strip-shaped structures and the second strip-shaped structures are made of metal. The plurality of first strip-shaped structures intersect with the plurality of second strip-shaped structures to form a plurality of grids. The first feed network includes a first structure, and the first structure is disposed on the first strip-shaped structure.

The broadband low-profile dual-polarization omnidirectional antenna comprises a horizontal polarization radiator, a metal coupling patch, a vertical polarization radiator and a metal floor which are sequentially arranged from top to bottom, the horizontal polarization radiator comprises a dielectric substrate, and a horizontal polarization radiation patch and a feed network which are printed on the upper surface and the lower surface of the dielectric substrate; the metal coupling patch comprises a metal disc and a metal circular ring nested on the circumference of the metal disc; the horizontal polarization radiation patch is connected with the metal disc through a first short-circuit line, and the metal ring and the horizontal polarization radiation patch are connected with the metal floor through four second short-circuit lines and four third short-circuit lines respectively. Through short-circuit connection between the horizontal polarization radiation patch and the metal disc and between the metal circular ring and the horizontal polarization radiation patch and the metal floor, coupling between the horizontal polarization radiation body and the vertical polarization radiation body is achieved, the electrical length of the antenna is further prolonged, the bandwidth of the antenna can be effectively widened, and the profile of the antenna can be effectively reduced.

This application describes multi-band antenna systems and base stations. An example multi-band antenna system includes: a plurality of radiating element arrays, feeding networks separately corresponding to the plurality of radiating element arrays, at least one layer of a frequency selective surface (FSS), and a reflection panel. The plurality of radiating element arrays are located above the reflection panel. All or some of the plurality of radiating element arrays are stacked. The at least one layer of the FSS is located between the stacked radiating element arrays. A feeding network corresponding to at least one radiating element array in the stacked radiating element arrays is electrically connected to the at least one layer of the FSS, or the feeding network corresponding to the at least one radiating element array is integrated on the at least one layer of the FSS.

The embodiment of the invention provides a feed network, an antenna device, an active antenna unit and communication equipment, and the feed network controls the phase state of a phase shifter through light, does not need to use a control line, enables the feed network comprising the phase shifter to adopt an inverted microstrip structure, and reduces the insertion loss between a radio frequency channel and an antenna.

A broadband 4T4R automobile radar antenna disclosed by the present invention comprises an upper-layer radiation plate and a lower-layer feed plate, the upper-layer radiation plate is provided with a plurality of horn mouths and a plurality of EBG choke grooves, the horn mouths and the EBG choke grooves are distributed at intervals in a staggered manner, each horn mouth is internally provided with a plurality of radiation slots at unequal intervals, and the upper-layer radiation plate is provided with a plurality of feed slots. A waveguide feed port is arranged on the lower surface of the lower layer feed panel; compared with the prior art, in order to ensure the antenna gain, the choke design in the EBG form is adopted between the antenna units, the transmission of surface waves is effectively restrained, and the isolation degree between the antenna units is improved; the horizontal plane realizes a good gain effect by accurately optimizing taper pin distribution of the slot array and amplitude-phase excitation of the feed network, and has better sidelobe envelope directional diagram characteristics; and the width of the lobe on the horizontal plane is adjusted by adjusting the inclination angle of the horn mouth, so that the width reaches 63 + / -3 degrees, and the gain effect is effectively improved.

The invention belongs to the field of wireless communication, and particularly relates to a Butler matrix feed network with a slow wave structure, which comprises a substrate integrated waveguide and a Butler matrix feed network formed on the substrate integrated waveguide, the Butler matrix feed network comprises a first 3dB coupler, a second 3dB coupler, a third 3dB coupler, a fourth 3dB coupler, a first cross coupler, a second cross coupler, a first 45-degree slow wave loading phase shifter, a second 45-degree slow wave loading phase shifter, a first 0-degree slow wave loading phase shifter and a second 0-degree slow wave loading phase shifter. According to the Butler matrix feed network, a row of non-radiation transverse slots are introduced into each phase shifter to serve as phase delay lines, so that the structure size of the Butler matrix feed network is reduced, and the dispersion is reduced.

Provided in the present application are a filter antenna, an antenna feed system, a base station and a communication system. The filter antenna in the present application comprises a radiating surface, a filter and a metal back cavity, wherein the radiating surface comprises a dielectric substrate, a feed network and a radiating structure, the feed network and the radiating structure being arranged on a surface of the dielectric substrate; the dielectric substrate covers the metal back cavity; the filter is accommodated in the metal back cavity; the feed network comprises a combination point and an adapter, the combination point and the adapter being connected by means of a conductive wire; the radiating structure comprises a feed patch, the adapter and the feed patch being connected by means of a conductive wire; and the filter comprises a probe, the probe being connected to the combination point. In the present application, a combination point is connected to a feed source by means of a filter, so that a feed network excites electromagnetic waves, and the electromagnetic waves are radiated by means of a feed patch. The filter antenna provided in the present application integrates a filter and a radiating surface, such that the filter antenna has a smaller size and lower loss, thereby helping to improve the integration level of an antenna feed system and thus realizing the miniaturization design of the antenna feed system.

Embodiments of this application provide a transmission line, a feed network, and an antenna apparatus. The transmission line is used for a radio frequency device. The transmission line includes a reflector, an insulation support, and a transmission structure. The transmission structure includes at least two side walls. The transmission structure is disposed on a surface of the insulation support, an included angle between two adjacent side walls of the transmission structure is greater than zero, and different side walls of the transmission structure are located on different surfaces of the insulation support. At least one surface of the transmission structure is disposed opposite to a part of a structure of the reflector, and a gap exists between the at least one surface of the transmission structure and the reflector. The transmission line has a small signal loss and occupies a small space.

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).

The invention relates to the technical field of radio frequency integrated circuits, in particular to a harmonic suppression power amplifier combining a matching network and a feed network, which comprises a transistor, an input matching module, an output matching module, a stabilizing module and a bias module, the input matching module comprises a first parallel resonance unit, the first parallel resonance unit is used for second harmonic suppression, the output matching module comprises a series resonance unit and a second parallel resonance unit, the series resonance unit is used for resonating at a second harmonic frequency and performing low-impedance grounding on the second harmonic, and the second parallel resonance unit is used for resonating at a second harmonic frequency and performing low-impedance grounding on the second harmonic. The second parallel resonance unit is used for resonating at a third harmonic frequency and forms a high-impedance open circuit for the third harmonic, the output matching module is coupled to a drain electrode of the transistor, and the bias module comprises a grid bias sub-module and a drain bias sub-module. The grid bias sub-module is coupled to a connection node of the input matching module and the grid of the transistor, the drain bias sub-module is coupled to the output matching module, and the bias voltage of the transistor is jointly determined by the grid bias sub-module and the drain bias sub-module. The power amplifier has the effect of improving the efficiency level of the power amplifier while realizing harmonic suppression optimization.

The invention relates to the technical field of communication antennas, in particular to a radiation unit of an integrated feed network and a base station antenna. The radiation unit comprises a radiation body, a feed structure and a balun structure, the balun structure is located below the radiation body and is provided with a balun cavity with two open ends, the balun cavity comprises a first balun cavity, the first balun cavity is arranged below the radiation body, and a feed sheet of the feed structure comprises a combiner, a phase shifter, a power divider or a filter and is arranged in the first balun cavity. According to the scheme, the Balun structure of the antenna array part is fully utilized, the appropriate feed network is integrated into the Balun structure, under the condition that the array size is not increased, the layout space of the feed network is increased, the complexity of the layout space of the feed network is reduced, meanwhile, the antenna gain is improved, and the reliability and consistency of the antenna are improved.