A wireless access device, system and method are disclosed for provisioning multiple concurrent radio services and adaptive management of multi-radio access points or multi-radio small cell base stations.

A combiner network is provided. A combiner network may include a corporate combiner. The corporate combiner may include a first plurality of radiation elements. The corporate combiner may include a first H-plane combiner connected to the first plurality of radiation elements and connected by a U-bend to a first E-plane combiner. The corporate combiner may include a second H-plane combiner connected to the first E-plane combiner. The corporate combiner may further include a first port. A plurality of corporate combiners may be assembled together as a combiner network.

The present invention provides a series of structures that provide a unique electromagnetic signature that can be used as a standalone device or as part of a larger security system. This structure's design method of manufacturing ensures that is resilient to commonly used techniques for reverse engineering electronic components and counterfeiting and is able to be applied to devices or any product before or after fabrication is completed.

A radar system includes a plurality of radiating elements configured to radiate electromagnetic energy and a plurality of feed waveguides defining a common plane and configured to guide electromagnetic energy to the plurality of radiating elements. The radar system also includes a plurality of waveguides arranged as a dividing network, where the dividing network includes one or more coupling apertures located in the common plane. The dividing network is configured to receive electromagnetic energy from a source and split the electromagnetic energy among the plurality of feed waveguides, such that each feed waveguide receives a respective portion of the electromagnetic energy. The splitting and adjusting of the radar system are based in part on the one or more coupling apertures in the dividing network.

Techniques and mechanisms to transmit signals with an antenna array. In an embodiment, a first signal is received at a first input of the first antenna while a second signal is received at a second input of the second antenna. A difference in phase differentialsthe phase differentials each between the first signal and the second signalresults from propagation of the first signal and the second signal in the antenna array and from a difference between respective configurations of the first antenna and the second antenna. Each of the first antenna and the second antenna has respective emitters distributed along the length thereof. In another embodiment, the first antenna and the second antenna have different respective dielectric structures or different respective distributions of emitters.

This document describes waveguides that use a combination of air dielectric filled channels and non-air dielectric filled channels to obtain beneficial attributes of both air and dielectric waveguides. EM energy loss inside the waveguide compares to a traditional air waveguide. However, with a smaller size than a comparable air waveguide, the example waveguide can occupy less area of a chip or package than a comparable air waveguide of a traditional design. The waveguide has a routing portion with hollow channels filled with an air dielectric. Radiation channels corresponding to each of the hollow channels are loaded with a non-air dielectric. A surface of each of the radiation channels allows EM energy to escape the non-air dielectric. The described waveguide may be particularly advantageous for use in an automotive context, for example, detecting objects in a roadway in a travel path of a vehicle.

Embodiments of a radio frequency feedline structure. A first printed circuit board (PCB) includes upper and lower metal layers and at least one cutout defining an upper portion of an open channel. The upper and lower metal layers are electrically connected by vias on opposite walls of the cutout. A second PCB includes upper and lower metal layers and elongated slots defining a suspended signal path within the open channel. The upper and lower metal layers are electrically connected by vias. A third PCB includes upper and lower metal layers and at least one cutout defining a lower portion of the open channel. The upper and lower metal layers are electrically connected by vias on opposite walls of the cutout. Respective upper and lower ground planes are electrically connected to the upper metal layer of the first PCB and the lower metal layer of the third PCB.

Techniques for implementing series-fed antenna arrays with a variable dielectric waveguide. In one implementation, coupling elements with optional controlled phase shifters are placed adjacent each radiating element of the array. To avoid frequency sensitivity of the resulting array, one or more waveguides have a variable propagation constant. The variable waveguide may use certain materials exhibiting this phenomenon, or may have configurable gaps between layers. Plated-through holes and pins can control the gaps; and/or a 2-D circular or a rectangular travelling wave array of scattering elements can be used as well.

The resent invention relates to an antenna device of a radar system, comprising: a substrate; multiple radiators arranged on the upper surface of the substrate; and multiple resonators arranged on the lower surface of the substrate and placed beneath the radiator, the resonators having the shape of rings having at least one slit formed thereon. According to the present invention, the radiators and the resonators operate together, thereby improving the performance of the antenna device.

The present disclosure relates to a pre-5.sup.th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4.sup.th-Generation (4G) communication system such as Long Term Evolution (LTE). The present invention relates to an antenna structure for signal radiation in a transmission device. An apparatus for signal radiation includes a feeding unit configured to radiate a signal, and a guiding unit, that consists of a plurality of elements physically spaced from one another, configured to adjust a radiation pattern of the signal radiated by the feeding unit by generating a radio wave in a Transverse Electric (TE) mode. Further, the present invention also includes embodiments different from the above-described embodiment.