Spreadtrum Communications (Shanghai) Co., Ltd.

Motorola Mobility LLC

Akzo Nobel Chemicals International B.v.

Kai Kang

Jiewei Lai

Shusheng Guo

Bo Wu

Qingwen Wendy Yuan-Huffman

Zheng-Zhuang Wang

Guang Ping Zhou

Beam detection method and device, beam adjusting method and device, antenna module selection method and device, and computer readable storage media are provided. The antenna module selection method is applied in a terminal device including first and second AiPs, and the method includes: the ULA array in the first AiP detecting signals emitted by the UPA array in the first AiP, and comparing detected characteristic parameter values of the signals emitted by the UPA array in the first AiP withe a first preset group of characteristics parameter values; the ULA array in the second AiP detecting signals emitted by the UPA array in the second AiP, and comparing detected characteristic parameter values of the signals emitted by the UPA array in the second AiP with a second preset group of characteristic parameter values: determining to use the first or second AiP for signal transmission and reception based on the comparison.

Beam detection method and device, beam adjusting method and device, antenna module selection method and device, and computer readable storage media

An antenna unit, an antenna system and an electronic device are provided. The antenna unit includes: a helical antenna with a three-dimensional structure, wherein the helical antenna is disposed on an edge region of a carrier board, and includes at least one turn of helical coil, wherein each of the at least one turn of helical coil includes multiple helical segments that are not in a same plane, and the multiple helical segments are respectively disposed in multiple layers of the carrier board. The antenna system includes a carrier board, a first antenna array and a second antenna array, wherein the first antenna array is disposed in a middle region of the carrier board and includes multiple patch units, the second antenna array includes at least one above antenna unit, and the helical antenna of the antenna unit is disposed at the edge region of the carrier board.

Antenna unit, antenna system and electronic device

A patch antenna unit and an Antenna in Package (AIP) structure are provided. The patch antenna unit includes: a base substrate; multiple layers of patches stacked on the base substrate, wherein an isolation layer is disposed between adjacent layers of the patches, and configured to generate a radio frequency electromagnetic field, wherein an edge shape of at least one layer in the multiple layers of patches is a continuous and smooth function curve shape, and edge shapes of all sides of a same layer in the multiple layers of patches are a same function curve shape. Impedance bandwidth may be increased while symmetry of the antenna structure is maintained, and requirements of a substrate process are met, thereby increasing operation bandwidth of the AiP structure.

Patch antenna unit and antenna in package structure

Compositions and methods are provided for delayed breaking of viscoelastic surfactant gels inside subterranean formations. Breaking is accomplished without mechanical intervention or use of a second fluid. The delayed breaking agent is a hydrophobically modified alkali swellable emulsion polymer, which can be a copolymer comprising acidic monomers, nonionic monomers, and associative monomers. The viscoelastic surfactant can be a zwitterionic surfactant, and can be selected from the group consisting of sultaines, betaines, and amidoamine oxides.

Internal polymeric breaker for viscoelastic surfactant-based fluids

A communications device () and capacitor assembly () having a first capacitor electrode formed by a conductive keypad mount () coupled to a conductive part of a housing () of the communications device (). The keypad mount () has keypad apertures () aligned with keys () of a keypad () and the conductive part of the housing () has an external housing covering insulator in the form of the window sub-housing (). There is a circuit board () providing support for a second capacitor electrode (). The circuit board () has an array of keypad actuators () aligned with the keys ().

Growing community of inventors

Shanghai, China

Kai Kang