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IPC 7
H01P-H01P01100

SECTION H – ELECTRICITY


H 01BASIC ELECTRIC ELEMENTS


H 01 PWAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B; aerials H01Q; networks comprising lumped impedance elements H03H)


Note

 In this subclass, the following expression is used with the meaning indicated:

 "waveguide type" as applied to transmission lines includes only high-frequency coaxial cables or Lecher lines, and as applied to resonators, delay lines, or other devices includes all devices having distributed inductance and capacitance.


Subclass Index

WAVEGUIDES, TRANSMISSION LINES 

H01P 3/00 

DEVICES OF THE WAVEGUIDE TYPE 

Auxiliary devices; coupling devices; resonators; delay lines 

H01P 1/00; H01P 5/00; H01P 7/00; H01P 9/00 

MANUFACTURE 

H01P 11/00 



1/

00Auxiliary devices (coupling devices of the waveguide type H01P 5/00)

1/

02.Bends; Corners; Twists

1/

04.Fixed joints (line connectors H01R; cable fittings H02G 15/00)

1/

06.Movable joints, e.g. rotating joints

1/

08.Dielectric windows (coupling devices for transit-time tubes H01J 23/36)

1/

10.for switching or interrupting

1/

11..by ferromagnetic devices  [3]

1/

12..by mechanical chopper

1/

14..by electric discharge devices (discharge devices H01J 17/64)

1/

15..by semiconductor devices  [2]

1/

16.for mode selection, e.g. mode suppression or mode promotion; for mode conversion (linking dissimilar lines or devices H01P 5/08)  [3]

1/

161..sustaining two independent orthogonal modes, e.g. orthomode transducer  [3]

1/

162..absorbing spurious or unwanted modes of propagation  [3]

1/

163..specifically adapted for selection or promotion of the TE01 circular-electric mode  [3]

1/

165.for rotating the plane of polarisation  [2]

1/

17..for producing a continuously rotating polarisation, e.g. circular polarisation  [2]

1/

175..using Faraday rotators  [3]

1/

18.Phase-shifters (H01P 1/165 takes precedence; coupling devices with variable coupling factor H01P 5/04)  [2]

1/

185..using a diode or a gas filled discharge tube  [3]

1/

19..using a ferromagnetic device  [3]

1/

195...having a toroidal shape  [3]

1/

20.Frequency-selective devices, e.g. filters (resonators H01P 7/00)

1/

201..Filters for transverse electromagnetic waves (H01P 1/212, H01P 1/213, H01P 1/215, H01P 1/219 take precedence)  [3]

1/

202...Coaxial filters (cascaded coaxial cavities H01P 1/205)  [3]

1/

203...Strip line filters  [3]

1/

205...Comb or interdigital filters; Cascaded coaxial cavities (H01P 1/203 takes precedence)  [3]

1/

207..Hollow waveguide filters (H01P 1/212, H01P 1/213, H01P 1/215, H01P 1/219 take precedence)  [3]

1/

208...Cascaded cavities; Cascaded resonators inside a hollow waveguide structure (H01P 1/205 takes precedence)  [3]

1/

209...comprising one or more branching arms or cavities wholly outside the main waveguide  [3]

1/

211...Waffle-iron filters; Corrugated structures  [3]

1/

212..suppressing or attenuating harmonic frequencies (H01P 1/215 takes precedence)  [3]

1/

213..combining or separating two or more different frequencies (H01P 1/215 takes precedence)  [3]

1/

215..using ferromagnetic material  [3]

1/

217...the ferromagnetic material acting as a tuning element in resonators  [3]

1/

218...the ferromagnetic material acting as a frequency selective coupling element, e.g. YIG-filters  [3]

1/

219..Evanescent mode filters  [3]

1/

22.Attenuating devices (dissipative terminating devices H01P 1/26)

1/

23..using ferromagnetic material  [3]

1/

24.Terminating devices

1/

26..Dissipative terminations

1/

28..Short-circuiting plungers (coupling devices with variable coupling factor H01P 5/04)

1/

30.for compensation of, or protection against, temperature or moisture effects

1/

32.Non-reciprocal transmission devices (H01P 1/02 to H01P 1/30 take precedence)  [3]

1/

36..Isolators  [2,3]

1/

365...Resonance absorption isolators  [3]

1/

37...Field displacement isolators  [3]

1/

375...using Faraday rotators  [3]

1/

38..Circulators  [2,3]

1/

383...Junction circulators, e.g. Y-circulators  [3]

1/

387....Strip line circulators  [3]

1/

39....Hollow waveguide circulators  [3]

1/

393...using Faraday rotators  [3]

1/

397...using non-reciprocal phase shifters (H01P 1/393 takes precedence)  [3]


3/

00Waveguides; Transmission lines of the waveguide type

3/

02.with two longitudinal conductors

3/

04..Lines formed as Lecher wire pairs

3/

06..Coaxial lines (not suitable for handling frequencies considerably beyond the audio range H01B 11/18)

3/

08..Microstrips; Strip lines

3/

10.Wire waveguides, i.e. with a single solid longitudinal conductor

3/

12.Hollow waveguides (H01P 3/20 takes precedence)

3/

123..with a complex or stepped cross-section, e.g. ridged or grooved waveguides (H01P 3/14 takes precedence)  [3]

3/

127..with a circular, elliptic, or parabolic cross-section  [3]

3/

13..specially adapted for transmission of the TE01 circular-electric mode  [2]

3/

14..flexible

3/

16.Dielectric waveguides, i.e. without a longitudinal conductor

3/

18.built-up from several layers to increase operating surface, i.e. alternately conductive and dielectric layers

3/

20.Quasi-optical arrangements for guiding a wave, e.g. focusing by dielectric lenses (quasi-optical devices in general H01Q 15/00)


5/

00Coupling devices of the waveguide type (non-reciprocal devices H01P 1/32; for introducing or removing wave energy to or from the discharge in transit-time tubes H01J 23/36)

5/

02.with invariable factor of coupling (H01P 5/12 takes precedence)  [3]

5/

04.with variable factor of coupling

5/

08.for linking dissimilar lines or devices (H01P 1/16, H01P 5/04 take precedence; linking lines of the same kind but with different dimensions H01P 5/02)  [3]

5/

10..for coupling balanced with unbalanced lines or devices

5/

103...Hollow-waveguide/coaxial-line transitions  [3]

5/

107...Hollow-waveguide/strip-line transitions  [3]

5/

12.Coupling devices having more than two ports (H01P 5/04 takes precedence)  [3]

5/

16..Conjugate devices, i.e. devices having at least one port decoupled from one other port  [2]

5/

18...consisting of two coupled guides, e.g. directional couplers  [2]

5/

19...of the junction type  [3]

5/

20....Magic-T junctions  [2,3]

5/

22....Hybrid ring junctions  [2,3]


7/

00Resonators of the waveguide type (structurally associated with transit-time tubes and interacting with the discharge therein H01J 23/18; microwave heating devices H05B 6/64)

7/

02.Lecher resonators

7/

04.Coaxial resonators

7/

06.Cavity resonators

7/

08.Strip line resonators  [3]

7/

10.Dielectric resonators  [3]


9/

00Delay lines of the waveguide type (structurally associated with transit-time tubes and interacting with the discharge therein H01J 23/24)

9/

02.Helical lines

9/

04.Interdigital lines


11/

00Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type (manufacture of coaxial cables H01B 13/00)


  
 

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