ClassID:

213989

H01P1/209 - CPC Classification

Classification description:

Auxiliary devices; Frequency-selective devices, e.g. filters; Hollow waveguide filters comprising one or more branching arms or cavities wholly outside the main waveguide

Recent Application in this class:
#1
20240387971
2024-11-21

Waveguide with a Curved-Wall Low-Pass Filter

#2
20240178536
2024-05-30

Cross-coupling structure for dielectric cavity filters

#3
20220416386
2022-12-29

Waveguide band-stop filter arrangement

#4
20220140463
2022-05-05

Millimeter-wave resonator and associated methods

#5
20220013878
2022-01-13

Multipaction-proof waveguide filter

#6
20200144994
2020-05-07

Group delay compensation filter

#7
20200014085
2020-01-09

Tunable waveguide filter input/output coupling arrangement

#8
20190288362
2019-09-19

Coaxial wiring device and transmission/reception integrated splitter

#9
20180233829
2018-08-16

Compact dual circular polarization multi-band waveguide feed network

#10
20180069285
2018-03-08

Coaxial wiring device and transmission/reception integrated splitter

#11
20160301123
2016-10-13

Dielectric resonator filter and multiplexer having a common wall with a centrally located coupling iris and a larger peripheral aperture adjustable by a tuning screw

#12
20160248139
2016-08-25

Coaxial wiring device and transmission/reception integrated splitter

#13
20150255845
2015-09-10

RF power combiner functioning as higher-order harmonics filter

#14
20090237184
2009-09-24

Filter with crosses

#15
20090153272
2009-06-18

Waveguide bandstop filter

#16
20070273459
2007-11-29

Band stop filter

#17
20070080761
2007-04-12

Resonator, filter, nonreciprocal circuit device, and communication apparatus

#18
20070032190
2007-02-08

Broad distribution bi-directional user terminal at configurable broadcast frequencies

#19
20060232360
2006-10-19

Waveguide frequency-band/polarization splitter

#20
20060152304
2006-07-13

Electrically tunable notch filters

#21
20060152303
2006-07-13

Electrically tunable notch filters

#22
20050035834
2005-02-17

Adjustable transmission line stub including a conductive fluid