with a complex or stepped cross-section, e.g. ridged or grooved waveguides (H 01 P 3/14 takes precedence) [3]
3
/
127
•
•
with a circular, elliptic, or parabolic cross-section [3]
3
/
13
•
•
specially adapted for transmission of the TE01circular-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 H 01 Q 15/00)
5
/
00
Coupling devices of the waveguide type (non-reciprocal devices H 01 P 1/32; for introducing or removing wave energy to or from the discharge in transit-time tubes H 01 J 23/36)
5
/
02
•
with invariable factor of coupling (H 01 P 5/12 takes precedence) [3]
5
/
04
•
with variable factor of coupling
5
/
08
•
for linking dissimilar lines or devices (H 01 P 1/16, H 01 P 5/04 take precedence; linking lines of the same kind but with different dimensions H 01 P 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 (H 01 P 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
/
00
Resonators of the waveguide type (structurally associated with transit-time tubes and interacting with the discharge therein H 01 J 23/18; microwave heating devices H 05 B 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
/
00
Delay lines of the waveguide type (structurally associated with transit-time tubes and interacting with the discharge therein H 01 J 23/24)
9
/
02
•
Helical lines
9
/
04
•
Interdigital lines
11
/
00
Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type (manufacture of coaxial cables H 01 B 13/00
)
