Patent ID: 8237518
Filing Date: 2012-08-07
Classification: H01P,H01Q

Abstract:
1. An antenna-filter module for transferring radiofrequency (RF) electromagnetic signals in either direction between the ambient air and an electronic circuit, said module including an antenna element and an integrated band pass filter provided with a series of resonators, wherein, the module includes at least two filters disposed adjacent to said antenna element, said antenna element is arranged as a joint antenna element so as to provide a corresponding number of antenna-filter combinations within the module, each filter is provided with a coupling member for coupling to a respective electronic circuit, said joint antenna element has a substantially greater bandwidth than each filter, and said joint antenna element is arranged in close proximity to a first resonator of each filter in the module so as to provide an integrated antenna-filter module without intermediary transmission lines or connectors to provide electromagnetic coupling to the resonators of each filter and a different specific pass band for each of the respective antenna-filter combinations; wherein each filter in said module is a cavity filter having an electrically conductive casing, and the casing of each filter comprises a first end portion provided with a coupling aperture dimensioned and located so as to secure said electromagnetic coupling between the joint antenna element and said first resonator in the respective filter.