Active antennas for multiple bands in wireless portable devices,申请号US201213713804-传众专利搜索

Active antennas for multiple bands in wireless portable devices

申请公布号：US8593358(B2)

申请号：US201213713804

申请日期：2012.12.13

申请公布日期：2013.11.26

申请人：

RAPPAPORT THEODORE S.

发明人：RAPPAPORT THEODORE S.

分类号：H01Q1/50

主分类号：H01Q1/50

摘要：Wireless devices, and particularly mobile devices such as cellphones, PDAs, computers, navigation devices, etc., as well as other devices which transmit or receive data or other signals at multiple frequency bands utilize at least one antenna to transmit and receive and a plurality of different bands (e.g., GSM cellular communication band; Bluetooth short range communication band; ultrawideband (UWB) communications, etc.). These wireless devices can simultaneously transmit or receive at a plurality of different bands, or simultaneously transmit and receive at different bands. The wireless devices have the ability to use a single physical structure (e.g., an antenna) for transmission and reception of many different bands. The antenna can be either actively tuned or passively tuned using one or more elements.