7 results about "Broadband antennas" patented technology

Competing tradeoffs of overall footprint, weight, and performance impact the design of antennas for many applications. However, those for compact portable devices or mobile platforms exploiting global navigation satellite systems these are further compounded by seeking good performance over a wide angular range. Accordingly, it would be beneficial to provide designers of a wide range of electrical devices and systems with compact broadband antennas which offer a low vertical profile relative to that provided by the common filar element approaches for high precision applications. Accordingly, through a combination of a dipole, a parasitic element, and additional ground elements to a convention ground plane the inventors provide broadband high performance antenna designs with low profile and low overall footprint.

The utility model relates to the technical field of broadband antennas, in particular to an adjustable multi-array broadband antenna. The utility model provides an adjustable multi-array broadband antenna which comprises a router, first antennas, second antennas, an interface and the like, the first antennas are rotatably arranged on the left side and the right side of the router, the first antennas are rotatably arranged on the rear side of the router in a bilateral symmetry mode, the second antennas are slidably arranged on the first antennas, the interface is arranged on the front side of the router, and the adjustable multi-array broadband antenna further comprises a stabilizing assembly. And a stabilizing assembly is arranged at the bottom of the router. According to the utility model, the electric suckers are started to be adsorbed on the desktop, the router is fixed, compared with a traditional placement mode, the stability of the router when the router is placed on the desktop is improved, the router is effectively prevented from shifting and even toppling over due to external force collision, touch and the like, and the normal use of the router is guaranteed.

The embodiment of the application relates to the technical field of broadband antennas, and discloses an antenna, the antenna comprising a dielectric substrate, a dielectric patch, an adjusting assembly, a ground plate and a feeding structure, the dielectric substrate comprising oppositely arranged first and second surfaces; the dielectric patch is arranged on the first surface, the dielectric patch is provided with a first groove, one end of the first groove is provided with a first opening; one end of the adjusting assembly abuts the groove bottom of the first groove, the other end of the adjusting assembly extends out of the first opening, the adjusting assembly can move forward or backward along the direction of the first opening to change the length of the first groove; the ground plate is arranged on the second surface, the ground plate is provided with a gap for coupling with the dielectric patch; the feeding structure is arranged on the second surface. In the above manner, the embodiment of the application can adjust the frequency of the antenna.

Overall coverage area, weight, and performance tradeoffs affect the design of antennas for many applications. However, for small portable devices or mobile platforms using global navigation satellite systems, these devices are further combined by seeking good performance over a wide angular range. Thus, designers providing a wide variety of electrical devices and systems with compact broadband antennas that provide low vertical profile relative to the vertical profile provided by the common wire element approach for high precision applications would be beneficial. Thus, by combining a dipole, parasitic element, and an additional ground element to a conventional ground plane, the inventors provide a broadband high performance antenna design with low profile and low overall coverage area.

The application discloses a kind of super surface broadband antennas based on eigenmode analysis, the upper surface of the antenna adopts non-periodic square super surface structure, by adjusting the size of different parts square patch and gap width, the modality significance and current distribution of super surface whole can be regulated, to filter out suitable mode.Determine the size of super surface whole, based on the current distribution obtained by eigenmode analysis, select the optimal feeding position, and adopt coaxial feeding mode to feed the antenna.The application applies eigenmode analysis to the design of non-periodic square super surface structure, by optimizing square patch of different cutting modes, the peripheral surface current is gathered on the center patch, so as to facilitate the observation of the modal characteristics and current distribution of super surface structure, quickly determine the appropriate mode and feeding position, simplify the design process of super surface antenna.

The dual-polarization broadband MIMO antenna provided by the invention is better in return loss and wider in working frequency band. Wherein the arrangement of the decoupling wall significantly reduces the mutual influence between the lenses, so that the wave beam is more stable, the isolation between the dual-polarized broadband antennas is improved, and the antenna gain is enhanced. The multiple decoupling layers arranged side by side generate surface traveling waves and focus electromagnetic waves propagating in the direction perpendicular to the layers into the radiator. In addition, the lens composed of the layered stubs has significantly reduced energy reflected from waves penetrating the outer contour thereof compared to a lens made of a homogeneous dielectric material. Therefore, compared with a dual-polarized antenna using a traditional dielectric lens, the dual-polarized antenna adopting the lens has the advantage that the interference on an adjacent dual-polarized antenna is much smaller. In addition, this decoupling wall has little impact on return loss and is easier to manufacture compared to conventional solutions.

The utility model provides a portable multifunctional AI empowers electronic countermeasure system relates to electronic countermeasure technical field, including host computer casing, the bottom of host computer casing is installed with tripod, and the surface of host computer casing is installed with a plurality of broadband antennas and a reference omnidirectional antenna, be provided with a plurality of transceiving front end components, a receiving front end component and signal processing unit in host computer casing, wherein a plurality of transceiving front end components and a plurality of broadband antennas are corresponding electric connection, reference omnidirectional antenna and receiving front end component electric connection, and a plurality of transceiving front end components and receiving front end component all are electric connection with signal processing unit, signal processing unit is used to adopt AI algorithm model to process radio frequency signal that a plurality of transceiving front end components and receiving front end component output, generates corresponding interference signal, and the interference signal is sent to broadband antenna through a plurality of transceiving front end components again, it is used to solve the problem that traditional interference ability is weak, and slow deployment.