ClassID:

213990

H01P1/211 - CPC Classification

Classification description:

Auxiliary devices; Frequency-selective devices, e.g. filters; Hollow waveguide filters Waffle-iron filters; Corrugated structures

Recent Application in this class:
#1
20230395961
2023-12-07

Waffle Iron Filter Arrangement For High-Frequency Signals

#2
20220352615
2022-11-03

Waveguide filter comprising a waveguide cavity defined by plural sidewalls and plural ridges, where any given ridge is attached to a corresponding sidewall

#3
20220352614
2022-11-03

Waveguide filter comprising a waveguide cavity defined by plural sidewalls and formed by a metal additive manufacturing technique having a specified overhang angle

#4
20220029259
2022-01-27

High-frequency module

#5
20220013878
2022-01-13

Multipaction-proof waveguide filter

#6
20210175635
2021-06-10

COMPACT PHASED ARRAY MILLIMETER WAVE COMMUNICATIONS SYSTEMS SUITABLE FOR FIXED WIRELESS ACCESS APPLICATIONS

#7
20210028526
2021-01-28

Waveguide filter

#8
20200373642
2020-11-26

Additively manufactured radio frequency filter

#9
20190036192
2019-01-31

Band-pass filter device and method for signal transmission

#10
20180375182
2018-12-27

Transmission line device

#11
20180277962
2018-09-27

Slot array antenna and radar having the slot array antenna

#12
20180034125
2018-02-01

Waveguide E-plane filter

#13
20180026378
2018-01-25

Microwave or millimeter wave RF part realized by die-forming

#14
20170229752
2017-08-10

Waveguide device, and antenna device including the waveguide device

#15
20150295300
2015-10-15

Dielectric waveguide comprised of a core surrounded by a cladding and forming integrated periodical structures

#16
20140176379
2014-06-26

Satellite antenna and waveguide filter thereof

#17
20130083703
2013-04-04

Tunable duplexer architecture

#18
20100308938
2010-12-09

Low-pass filter for electromagnetic signals

#19
20100102899
2010-04-29

Waveguide antenna front end

#20
20100090784
2010-04-15

Programmable Tunable Filter Waveguide

#21
20100052823
2010-03-04

Filter unit

#22
20070018757
2007-01-25

Systems and methods for blocking microwave propagation in parallel plate structures utilizing cluster vias

#23
20060038639
2006-02-23

Systems and methods for blocking microwave propagation in parallel plate structures utilizing cluster vias

#24
20050073463
2005-04-07

Waveguide and method of manufacture

#25
17035567
2022-06-28

Hybrid-harmonic waveguide filter including corrugations coupled by ridge interconnects and having sloped transformer sections