36results about How to "Achieving Broadband Features" patented technology

The invention discloses a high-efficiency wideband power amplifier with a band-pass filter response function. The high-efficiency wideband power amplifier comprises a DC biasing circuit, a power amplification transistor, an input match circuit and an output match circuit. A microstrip line band-pass filter with different port impedances and a section of tuning microstrip line are designed to be used as the output match circuit of the power amplifier, the function of the filtering is achieved, meanwhile, the circuits are made to have the band-pass filter response characteristic, and two transmission zeros are generated on the edge of a passband. Compared with a traditional cascade circuit of a power amplifier and a filter, due to the fact that the microstrip line band-pass filter is used as the output match circuit, the entire circuit is small in size, small in loss and wide in working band, and high edge selectivity is achieved due to the two transmission zeros. The high-efficiency wideband power amplifier with the high-pass filter response function is achieved, and testing result validation is provided.

The invention discloses a folded cavity backed slot antenna based on a substrate integrated waveguide. The antenna comprises a first dielectric plate and a second dielectric plate which are arranged in a stacked manner, wherein a first metal plate and a second metal plate are respectively arranged on a surface and a back surface of the first dielectric plate, a first short-circuit nail group and asecond short-circuit nail group longitudinally penetrate through the surface and the back surface of the first dielectric plate, and a first gap structure and a second gap structure are respectivelyformed on the first metal plate and the second metal plate; a third metal plate and a fourth metal plate are respectively arranged on a surface and a back surface of the second dielectric plate, a third short-circuit nail group and a fourth short-circuit nail group longitudinally penetrate through the surface and the back surface of the second dielectric plate, and a third gap structure is formedon the third metal plate. According to the invention, a large working bandwidth is realized, the radiation pattern is stable, the directivity is good, and the gain in the working bandwidth is high.

The invention discloses a small broadband reconstruction smart phone antenna. By the adoption of the small broadband reconstruction smart phone antenna, the problems that in the prior art, a smart phone antenna which is small in size, low in profile and capable of achieving multi-frequency broadband working is hard to design in an given environment, and technology development requirements can not be met are mainly solved. The small broadband reconstruction smart phone antenna comprises a shell, a medium plate arranged in the shell, a metal land arranged on one surface of the medium plate, second bending metal strip sets and first bending metal strip sets, wherein the second bending metal strip sets are all arranged on the other surface of the medium plate, the first metal strip sets are connected with feeding points (1), and the first bending metal strip sets and the second bending metal strip sets are all composed of more than one metal strip, chip diodes, chip inductors and chip capacitors, wherein the chip device diodes, the chip inductors and the chip capacitors are connected among the metal strips. According to the scheme, the small broadband reconstruction smart phone antenna achieves the goals of being small, capable of covering eight working frequency bands and high in cost performance, and has high practical value and promotional value.

The invention discloses a meta-material loaded low cross-coupling antenna array. The low cross-coupling antenna array comprises a ground plane, metal patches, a metal connecting rod, a feed probe and a medium substrate, wherein the metal patches are connected with the ground plane through the metal connecting rod and the feed probe in order; the air medium is formed between the ground plane and the metal patch; the metal patches are in N*N array distribution, and a U-shaped groove is formed on the metal patch; the medium substrate is located on the ground plane, and the medium substrate is located between two adjacent metal patches; a dual-opening ring unit is etched on the medium substrate, and N means the array number of the metal patch. The low cross-coupling array disclosed by the invention has the advantages that the broadband feature is realized by etching the U-shaped groove on the patch by using the air medium; the inherent band-stop feature of the dual-opening ring structure is used for effectively inhibiting the cross-coupling influence of the antenna array in the stop band; the low cross-coupling antenna array has a compact structure and a cross-coupling inhibition feature, the plane structure is easy for processing and suitable for large batch production.

The invention discloses a millimeter wave monolithic quadrature down converter, pertaining to the field of electronic technology and relating to a millimeter wave monolithic quadrature down converter. Based on PHMET technology, the invention introduces a low-noise amplifying unit through a radio-frequency signal RF input port in the existing millimeter wave monolithic quadrature down converter, thus greatly reducing the frequency conversion loss of the whole monolithic quadrature down converter, without increasing the chip area. Simultaneously, wideband circuits such as Lange Coupler, Marchand Balun and the like are adopted to realize the power division of signals, thereby realizing the wideband feature of the whole quadrature down converter. The down converter can be applied to radar systems, communication systems and other systems.

The invention provides an electronic device provided with a 5G antenna. The electronic device includes: an array antenna implemented by a multilayer substrate inside the electronic device and having a plurality of antenna elements; and a transmission/reception unit circuit that controls a signal applied to each antenna element of the array antenna so as to perform beamforming by the array antenna, the each antenna element including: a patch antenna that is disposed on a specific layer of the multilayer substrate and has a first patch and a second patch that are spaced apart from each other at a predetermined interval; and a ground layer disposed at a lower portion of the patch antenna and provided with a groove, the first patch and the second patch being connected to the ground layer through a plurality of through holes disposed adjacent to the groove in a longitudinal direction of the groove.

The invention relates to a wideband multi-mode combined antenna. The antenna comprises a dielectric substrate, a slot antenna, a folded dipole, a metal frame and a coaxial feed line, wherein the slot antenna is fixed at the upper side of the dielectric substrate, the dielectric constant of the substrate is 2.65, a rectangular gap is formed in the middle of the dielectric substrate, two short gaps are symmetrically formed in a direction perpendicular to the gap, the coaxial line is used for feeding at the middle of the gap, the folded dipole is vertically connected with the two sides of the middle of the gap, a perpendicular part of the dipole is a trapezoid, a horizontal part of the dipole is a rectangle, and the metal frame is vertically arranged at the periphery of the dielectric substrate. In a designed example, the bandwidth of the antenna is 1.9-2.83GHz, the relative bandwidth is 39.3%, two resonant points are generated at 2.10GHz and 2.69GHz, and wideband characteristic is achieved. The antenna confirms to the wideband requirement, can be applied to frequency bands of LTE, WCDMA, WLAN and RFID, is wide in application range, and has relatively high practicability.

The invention provides a metasurface-based broadband differential antenna. The metasurface-based broadband differential antenna comprises a first dielectric plate, a second dielectric plate and a metal layer attached between the first dielectric plate and the second dielectric plate, wherein a rectangular gap is formed in the metal layer; a circular metal sheet with a gap is attached to the uppersurface of the first dielectric plate, and a metal feeder line is attached to the lower surface of the second dielectric plate; the circular metal sheet with the gap is provided with a first horizontal strip-shaped gap and second horizontal strip-shaped gaps which are arranged on the two sides; the circular metal sheet with the gap is provided with a first vertical strip-shaped gap and second vertical strip-shaped gaps which are arranged on the two sides; the metal feeder line comprises a cross part and two U-shaped parts which are symmetric about the cross section; and the cross-shaped upperend part of the cross part extends into the U-shaped part at the upper end, and the cross-shaped lower end part of the cross part extends into the U-shaped part at the lower end. The metasurface-basedbroadband differential antenna can achieve broadband characteristics and high-gain characteristics.

The invention discloses a novel multimode broadband directional diagram diversity microstrip antenna. The antenna comprises a first dielectric substrate, a second dielectric substrate, a metal floor with two slits, a feed network with two input ports and six rectangular radiation patches, wherein the first dielectric substrate and the second dielectric substrate are sequentially stacked from bottom to top, the metal floor is located on the upper surface of the first dielectric substrate, and the feed network is located on the lower surface of the first dielectric substrate; the six rectangular radiation patches are located on the upper surface of the second dielectric substrate and carry out coupled feeding according to the two slits. The antenna has the advantages of wide impedance bandwidth, wide radiation bandwidth, simple structure, low cost, directional diagram and the like.

The invention discloses a wideband dual polarized base station antenna, and belongs to the technical field of mobile communication base station antennas. The wideband dual polarized base station antenna comprises a radiation unit and a reflecting plate, and is characterized in that the radiation unit is composed of a dipole antenna provided with L-shaped slots, the reflecting plate is arranged below the dipole radiation unit, and the reflecting plate and the radiation unit feed in a coaxial connection mode; the radiation structure of the dipole antenna is formed by placing dipoles inclining by 45 degrees in a crossed manner, openings of the L-shaped slots of the dipole antenna are oppositely arranged, and crossed opposite corners of the dipole antenna are connected through two connecting pieces. By adopting the structure disclosed by the invention, the dipole radiation unit provided with the L-shaped slots increases a current path and realizes miniaturization of the antenna, the radiation structure is formed by placing the two dipoles inclining by 45 degrees in a crossed manner, thereby forming large coupling, and realizing wideband characteristics. The wideband dual polarized base station antenna is simple in design, convenient to process and assemble, good in production conformity, convenient for batch production and high in production efficiency, and has the advantages of wide band, dual polarization and the like.