IPC 7 English version H01Q 11/00-H01Q 25/04

IPC ⁷ English version

H01Q - H01Q 9/46

H01Q01100-H01Q02504

SECTION H – ELECTRICITY

H 01

BASIC ELECTRIC ELEMENTS

H 01 Q

AERIALS (microwave radiators for near-field therapeutic treatment A61N 5/04; apparatus for testing aerials or for measuring aerial characteristics G01R; waveguides H01P; radiators or aerials for microwave heating H05B 6/72)

11/

Electrically-long aerials having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements (leaky-waveguide aerials, slot aerials H01Q 13/00; combinations of active elements with secondary devices to give desired directional characteristic H01Q 19/00; aerial arrays or systems H01Q 21/00)

11/

Non-resonant aerials, e.g. travelling-wave aerial

11/

with parts bent, folded, shaped, screened, or electrically loaded to obtain desired phase relation of radiation from selected sections of the aerial (rhombic aerials, V-aerials H01Q 11/06)

11/

Rhombic aerials; V-aerials

11/

Helical aerials

11/

Log-periodic aerials (H01Q 11/08 takes precedence) [3]

11/

Resonant aerials

11/

with parts bent, folded, shaped, or screened, or with phasing impedances, to obtain desired phase relation of radiation from selected sections of the aerial or to obtain desired polarisation effects

11/

in which the selected sections are collinear

11/

in which the selected sections are parallelly spaced [3]

11/

V-aerials

13/

Waveguide horns or mouths; Slot aerials; Leaky-waveguide aerials; Equivalent structures causing radiation along the transmission path of a guided wave (multimode aerials H01Q 25/04)

13/

Waveguide horns

13/

Biconical horns (biconical dipoles comprising two conical surfaces having collinear axes and adjacent apices and fed by a two-conductor transmission line H01Q 9/28)

13/

Waveguide mouths (horns H01Q 13/02)

13/

Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines

13/

Resonant slot aerials

13/

Longitudinally slotted cylinder aerials; Equivalent structures

13/

Skeleton cylinder aerials

13/

Folded slot aerials

13/

the slot being backed by, or formed in boundary wall of, a resonant cavity (longitudinally slotted cylinder H01Q 13/12)

13/

Non-resonant leaky-waveguide or transmission-line aerials; Equivalent structures causing radiation along the transmission path of a guided wave

13/

Longitudinal slot in boundary wall of waveguide or transmission line

13/

constituted by a dielectric or ferromagnetic rod or pipe (H01Q 13/28 takes precedence)

13/

Surface waveguide constituted by a single conductor, e.g. strip conductor

13/

comprising elements constituting electric discontinuities and spaced in direction of wave propagation, e.g. dielectric elements, conductive elements forming artificial dielectric (Yagi aerials H01Q 19/30)

15/

Devices for reflection, refraction, diffraction, or polarisation of waves radiated from an aerial, e.g. quasi-optical devices (variable for purpose of altering directivity H01Q 3/00; arrangements of such devices for guiding waves H01P 3/20; variable for purpose of modulation H03C 7/02)

15/

Refracting or diffracting devices, e.g. lens, prism

15/

comprising wave-guiding channel or channels bounded by effective conductive surfaces substantially perpendicular to the electric vector of the wave, e.g. parallel-plate waveguide lens

15/

comprising plurality of wave-guiding channels of different length

15/

formed of solid dielectric material

15/

comprising three-dimensional array of impedance discontinuities, e.g. holes in conductive surfaces or conductive discs forming artificial dielectric (leaky-waveguide aerials H01Q 13/28)

15/

functioning also as polarisation filter

15/

Reflecting surfaces; Equivalent structures

15/

curved in two dimensions, e.g. paraboloidal

15/

comprising plurality of mutually inclined plane surfaces, e.g. corner reflector

15/

Collapsible reflectors

15/

functioning also as polarisation filter

15/

Combinations of reflecting surfaces with refracting or diffracting devices [3]

15/

Polarising devices; Polarisation filters (devices functioning simultaneously both as polarisation filters and as refracting or diffracting devices or as reflectors H01Q 15/12, H01Q 15/22)

17/

Devices for absorbing waves radiated from an aerial; Combinations of such devices with active aerial elements or systems

19/

Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic

19/

Details

19/

Means for collapsing H-aerials or Yagi aerials

19/

using refracting or diffracting devices, e.g. lens

19/

for modifying the radiation pattern of a radiating horn in which it is located

19/

wherein the primary active element is coated with or embedded in a dielectric or magnetic material (protective material H01Q 1/40; with variable characteristics H01Q 3/44) [3]

19/

using reflecting surfaces

19/

wherein the surfaces are concave (H01Q 19/18 takes precedence) [3]

19/

the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination (H01Q 19/15 takes precedence) [3]

19/

the primary radiating source being a line source, e.g. leaky waveguide aerials [3]

19/

the primary radiating source comprising two or more radiating elements (H01Q 19/15, H01Q 25/00 take precedence) [3]

19/

having two or more spaced reflecting surfaces (producing pencil beam by two cylindrical reflectors with their focal lines orthogonally disposed H01Q 19/20)

19/

185

wherein the surfaces are plane [3]

19/

comprising one main concave reflecting surface associated with an auxiliary reflecting surface [3]

19/

195

wherein a reflecting surface acts also as a polarisation filter or a polarising device [3]

19/

Producing pencil beam by two cylindrical focusing devices with their focal lines orthogonally disposed

19/

using a secondary device in the form of a single substantially straight conductive element

19/

the primary active element being centre-fed and substantially straight, e.g. H-aerial

19/

the primary active element being end-fed and elongated

19/

using a secondary device in the form of two or more substantially straight conductive elements (log-periodic aerials H01Q 11/10; constituting a reflecting surface H01Q 19/10)

19/

the primary active element being centre-fed and substantially straight, e.g. Yagi aerial

19/

the primary active element being end-fed and elongated

21/

Aerial arrays or systems (producing a beam the orientation or the shape of the directional pattern of which can be changed or varied H01Q 3/00; electrically-long aerials H01Q 11/00)

21/

Arrays of individually energised aerial units similarly polarised and spaced apart

21/

the units being spaced along, or adjacent to, a rectilinear path

21/

Collinear arrangements of substantially straight elongated conductive units

21/

Parallel arrangements of substantially straight elongated conductive units (travelling-wave aerials comprising transmission line loaded with transverse elements, e.g. "fishbone" aerial, H01Q 11/04)

21/

Adcock aerials

21/

U-type

21/

H-type

21/

the units being spaced along, or adjacent to, a curvilinear path

21/

Aerial units of the array energised non-uniformly in amplitude or phase, e.g. tapered array, binomial array

21/

Combinations of aerial units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction

21/

Turnstile or like aerials comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre

21/

Combinations of substantially independent non-interacting aerial units or systems

21/

Combinations of different interacting aerial units for giving a desired directional characteristic (H01Q 25/00 takes precedence) [3]

21/

Combinations of separate aerial units operating in different wavebands and connected to a common feeder system

23/

Aerials with active circuits or circuit elements integrated within them or attached to them [3]

Notes

(1)

This group covers only such combinations in which the type of aerial or aerial element is immaterial. [3]

(2)

Combinations with a particular type of aerial are classified in the group appropriate to that type. [3]

25/

Aerials or aerial systems providing at least two radiating patterns (arrangements for changing or varying the orientation or the shape of the directional pattern H01Q 3/00) [3]

25/

providing sum and difference patterns (multimode aerials H01Q 25/04) [3]

25/

Multimode aerials [3]

H01Q - H01Q 9/46