1
Wilhelm Weitzenberger: High frequency filter with blocking circuit coupling. Kathrein Werke KG, Nixon & Vanderhye PC, August 17, 2010: US07777593 (6 worldwide citation)

An improved high frequency filter displays the following features: the high frequency filter displays transmission behavior with a coupling impedance resonance having at least one blocking point at a frequency, the blocking point at the frequency being adjustable by presetting and/or preselecting a ...


2
Wilhelm Weitzenberger: High frequency filter with blocking circuit coupling. Kathrein Werke KG, Nixon & Vanderhye PC, July 3, 2008: US20080157899-A1

An improved high frequency filter displays the following features: the high frequency filter displays transmission behavior with a coupling impedance resonance having at least one blocking point at a frequency, the blocking point at the frequency being adjustable by presetting and/or preselecting a ...