Patent ID: 9531048
Filing Date: 2016-12-27
CPC Classification: H01P

Claim Text:
1. An apparatus comprising: a mode filter configured as a monolithic component fabricated from an electrically conductive material, the mode filter providing a low-loss transmission path for RF signals propagating, at a first frequency band, in a first one or more propagating modes, while suppressing, by at least 5 dB, at least one second propagating mode of the RF signals associated with the first frequency band; a proximal port and a distal port, having a respective characteristic cross sectional dimension D an electrically conductive hollow tube, the hollow tube having a longitudinal axis and including a plurality of non ridge-loaded adjacent longitudinal segments, the hollow tube extending, by way of the plurality of non ridge-loaded adjacent longitudinal segments, a length L between a distal end of the proximal port to a proximal end of the distal port, wherein: