US 12,230,854 B2
System with magnetic film for reducing passive intermodulation
Charles L. Bruzzone, Woodbury, MN (US); Jeffrey A. Tostenrude, Leander, TX (US); Zohaib Hameed, Woodbury, MN (US); and Jeffrey D. Keeney, Hudson, WI (US)
Assigned to 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed on Nov. 8, 2023, as Appl. No. 18/504,212.
Application 18/504,212 is a continuation of application No. 18/245,240, granted, now 11,848,471, previously published as PCT/IB2021/058252, filed on Sep. 10, 2021.
Claims priority of provisional application 63/085,525, filed on Sep. 30, 2020.
Prior Publication US 2024/0072404 A1, Feb. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01Q 1/00 (2006.01); H01P 1/04 (2006.01); H01P 1/23 (2006.01); H01Q 19/08 (2006.01); H03C 7/02 (2006.01); H04B 1/04 (2006.01); H04B 3/52 (2006.01)
CPC H01P 1/23 (2013.01) [H01Q 1/002 (2013.01); H03C 7/022 (2013.01); H04B 1/0475 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A wireless communication system comprising:
a transmitter configured to transmit at least first and second radio waves having respective different frequencies F1 and F2;
one or more electrically conductive passive substantially linear medium portions;
one or more electrically conductive passive substantially nonlinear medium portions disposed proximate the one or more electrically conductive passive substantially linear medium portions; and
one or more materials covering at least a first portion of the one or more passive substantially linear medium portions and no more than about 20% of the one or more electrically conductive passive substantially nonlinear medium portions; such that when the transmitter transmits the first and second radio waves, the electrically conductive passive substantially linear and nonlinear medium portions receive the first and second radio waves and generate first and second signals propagating therein at the respective frequencies F1 and F2, at least one intermodulation signal being generated in the one or more passive substantially nonlinear medium portions from the first and second signals, the at least one intermodulation signal having a frequency F3 equal to nF1+mF2, m and n positive or negative integers, the one or more materials reducing the generation of the at least one intermodulation signal by at least 2 dB.