US Patent Class 343
COMMUNICATIONS: RADIO WAVE ANTENNAS



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Current as of: June, 1999
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  DF  CLASS NOTES
700 R  DF  ANTENNAS
701  DF  .~ Having electric space discharge device
702  DF  .~ With radio cabinet
703  DF  .~ Measuring signal energy
704  DF  .~ With ice clearer or preventer
705  DF  .~ With aircraft
706  DF  .~.~ Lighter-than-air device
707  DF  .~.~ Trailing type
708  DF  .~.~ Aircraft part of active antenna or vice versa
709  DF  .~ Waterborne (e.g., buoyant or with watercraft)
710  DF  .~.~ Watercraft part of active antenna or vice versa
711  DF  .~ With vehicle
712  DF  .~.~ Vehicle part of active antenna or vice versa
713  DF  .~.~ Supported by vehicle body
714  DF  .~.~.~ Antenna adjustable from inside body
715  DF  .~.~.~ Rod type
716  DF  .~.~.~ Running board
717  DF  .~.~ Supported underneath vehicle
718  DF  .~ Body-attached or connected
719  DF  .~ Buried underground or submerged under water
720  DF  .~ Combined with diverse-type art device
721  DF  .~.~ Light
722  DF  .~ With lumped reactance filter in active antenna
723  DF  .~ Single adjustable length electrically long linear antenna
724  DF  .~ Convertible to different antennas
725  DF  .~ Plural separate diverse type
726  DF  .~.~ Including balanced doublet and loop-type antennas
727  DF  .~.~ Including balanced doublet-type antenna
728  DF  .~.~ Including loop-type antenna
729  DF  .~ Plural diverse-type antennas using same active element
730  DF  .~.~ Including balanced doublet-type antenna
731  DF  .~ Traveling wave type
732  DF  .~.~ Circular loop
733  DF  .~.~ Rhombic
734  DF  .~.~.~ With feedback
735  DF  .~.~ Balanced V
736  DF  .~.~ Inverted V
737  DF  .~.~ Plural
738  DF  .~.~ With reflecting transformer
739  DF  .~ With terminating resistance at open end
740  DF  .~.~ Balanced type
741  DF  .~ High frequency type loops
742  DF  .~.~ Plural
743  DF  .~.~ Feed coupling at spaced points on loop
744  DF  .~.~ With series reactance in loop
745  DF  .~ With variable reactance for tuning antenna
746  DF  .~.~ Slot type
747  DF  .~.~ Balanced doublet type
748  DF  .~.~ Loop type
749  DF  .~ With lumped reactance for loading antenna
750  DF  .~.~ Adjustable reactance
751  DF  .~.~ Plural antennas
752  DF  .~.~ Reactance at free end of active antenna
753  DF  .~ With spaced or external radio wave refractor (e.g., lens)
754  DF  .~.~ With scanning, sweeping, or orienting
755  DF  .~.~ With reflector
756  DF  .~ With polarization filter or converter
757  DF  .~ With means for moving directive antenna for scanning, sweeping or orienting
758  DF  .~.~ Plural relatively movable
759  DF  .~.~ Spiral motion
760  DF  .~.~ With signal, indicator or alarm
761  DF  .~.~ Reflector and antenna relatively movable
762  DF  .~.~ Wave guide type antenna
763  DF  .~.~ Rotary or rotary oscillatory motion
764  DF  .~.~.~ Loop-type antenna
765  DF  .~.~.~ In different planes
766  DF  .~.~.~ Motor-driven
767  DF  .~ Slot type
768  DF  .~.~ With periodic control of slot or coupling
769  DF  .~.~ Ring-shaped slot
770  DF  .~.~ Plural
771  DF  .~.~.~ With wave guide coupling
772  DF  .~ Wave guide type (e.g., horn)
773  DF  .~.~ Biconical horn type
774  DF  .~.~.~ Stacked
775  DF  .~.~.~ With reflector
776  DF  .~.~ Plural
777  DF  .~.~.~ With control of individual antenna (e.g., lobe switching or steering)
778  DF  .~.~.~ With phasing
779  DF  .~.~.~ With reflector
780  DF  .~.~ "Pillbox" type
781 R  DF  .~.~ With external reflector or director
782  DF  .~.~.~ With means reducing re-radiation into active antenna
781 P  DF  .~.~.~ Plural reflectors
781 CA  DF  .~.~.~ With main and subreflector (Casse-grain type)
783  DF  .~.~ With internal-wave refraction means
784  DF  .~.~ With closure
785  DF  .~.~ Dielectric type (e.g., polystyrene rod)
786  DF  .~.~ With horn
787  DF  .~ Including magnetic material
788  DF  .~.~ Loop type
789  DF  .~ Within conductive apertured wall
790  DF  .~ Active sleeve surrounds feed line
791  DF  .~.~ With coaxial active rod
792  DF  .~.~ Doublet type
792.5  DF  .~ Logarithmically periodic
793  DF  .~ Balanced doublet - centerfed (e.g., dipole)
794  DF  .~.~ Diverse-type doublets
795  DF  .~.~ Sheet or wing type
796  DF  .~.~ Helically or angularly staggered plural doublets
797  DF  .~.~ Plural crossed (e.g., turnstile)
798  DF  .~.~.~ Plural groups (e.g., stacked)
799  DF  .~.~ Plural circumferentially arranged
800  DF  .~.~.~ Plural groups (e.g., stacked)
801  DF  .~.~ Three or more collinear units form doublet
802  DF  .~.~ Distributed reactance added to arms
803  DF  .~.~ Folded
804  DF  .~.~.~ Multiple conductor type
805  DF  .~.~ Arms angularly adjustable (e.g., rabbit ears)
806  DF  .~.~ Bent arms (e.g., zigzag type)
807  DF  .~.~ Tapered, thick, or enlarged arms
808  DF  .~.~ Plural-rod arm forming V (e.g., conical arrangement)
809  DF  .~.~ Arms non-linearly arranged (e.g., resonant V type)
810  DF  .~.~ Plural
811  DF  .~.~.~ Fishbone-type array
812  DF  .~.~.~ Parallel arrangement
813  DF  .~.~.~.~ Parallel and collinear arrangement
814  DF  .~.~.~.~ With coupling network
815  DF  .~.~.~.~ With parasitic element (e.g., reflector or director)
816  DF  .~.~.~ With coupling network
817  DF  .~.~.~ With parasitic element (e.g., reflector or director)
818  DF  .~.~ With parasitic element (e.g., reflector or director)
819  DF  .~.~.~ With reflector and director
820  DF  .~.~ With coupling network or impedance in the leadin
821  DF  .~.~.~ Balanced to unbalanced circuit
822  DF  .~.~.~ Impedance matching network
823  DF  .~.~ Adjustable length
824  DF  .~ Planar array of linear antennas
825  DF  .~ Fractional, multiple, or full wave length linear type
826  DF  .~.~ Plural
827  DF  .~.~.~ Collinear arrangement
828  DF  .~.~ Non-uniformity in antenna
829  DF  .~.~ With grounding structure, including counterpoises
830  DF  .~.~.~ With coaxial feed line
831  DF  .~.~ Stub type
832  DF  .~ Active antenna as reflector
833  DF  .~ Antenna with parasitic director
834  DF  .~ Antenna with parasitic reflector
835  DF  .~.~ Plural active antennas
836  DF  .~.~.~ Plural reflectors
837  DF  .~.~ Plural reflectors
838  DF  .~.~.~ Including a screening reflector
839  DF  .~.~ Reflector and active antenna relatively movable
840  DF  .~.~ Parabolic-type reflector with active antenna at focus
841  DF  .~ With electrical shield
842  DF  .~.~ Loop-type antenna
843  DF  .~ Having an appreciable wave length dimension
844  DF  .~ Plural antennas spaced a fractional or full wave length apart
845  DF  .~ With ground connection spaced from feed line connection
846  DF  .~ With grounding structure (including counterpoises)
847  DF  .~.~ Insulated from or capacity coupled to ground
848  DF  .~.~ Artificial or substitute grounds (e.g., ground planes)
849  DF  .~.~ Modified natural grounds
850  DF  .~ With coupling network or impedance in the leadin
851  DF  .~.~ With radiation suppressor (e.g., shield)
852  DF  .~.~ Plural path with impedance matching
853  DF  .~.~ With plural antennas
855  DF  .~.~.~ Loop antennas
856  DF  .~.~ Antenna forms transformer primary or secondary
857  DF  .~.~ Coupling at spaced points on antenna
858  DF  .~.~ Coupled to plural leadins
859  DF  .~.~ Balanced to unbalanced circuit
860  DF  .~.~ Impedance matching network
861  DF  .~.~.~ Adjustable
862  DF  .~.~.~ Including long line element
863  DF  .~.~.~.~ Tapered
864  DF  .~.~.~.~ Quarter-wave transformer
865  DF  .~.~ Balanced coupling network to balanced antenna
866  DF  .~ Loop type
867  DF  .~.~ Plural; plural or tapped coils
868  DF  .~.~ Adjustable configuration, area or coil length
869  DF  .~.~ With rotatable support
870  DF  .~.~ With connector or terminals
871  DF  .~.~ With collapsible or foldable frame
872  DF  .~ With housing or protective covering
873  DF  .~.~ Antenna embedded, potted, or coated
874  DF  .~ Mast or tower type
875  DF  .~.~ Sectional
876  DF  .~ Switching between antennas and lines
877  DF  .~ With reel for antenna
878  DF  .~ With support for antenna, reflector or director
879  DF  .~.~ For plural separate antennas
880  DF  .~.~ Adjustable or collapsible support
881  DF  .~.~.~ Foldable
882  DF  .~.~.~ Pivoted or rotatable
883  DF  .~.~.~ Telescoping
884  DF  .~.~ Plural wire transmission line or wave guide as support
885  DF  .~.~ Stress distributing or static discharging means for support
886  DF  .~.~ Horizontally suspended between poles or standards
887  DF  .~.~ Streamline-shaped support
888  DF  .~.~ For supporting rod-like end portion of antenna
889  DF  .~.~.~ Rod retractible into support
890  DF  .~.~ Antenna on post, standard or tower
891  DF  .~.~.~ Antenna along length of post
892  DF  .~.~ Antenna on bracket
893  DF  .~ Plural antennas
894  DF  .~ With signal, indicator or alarm
895  DF  .~ Spiral or helical type
896  DF  .~ Rods or wire form cage or hollow post
897  DF  .~ Mesh, woven, braided or multiple strip
898  DF  .~ Hollow metallic body
899  DF  .~ Having area increasing means (e.g., spiniferous, metal ball on top)
900  DF  .~ Rod type
901  DF  .~.~ Telescoping
902  DF  .~.~.~ Fluid pressure actuated
903  DF  .~.~.~ Flexible rod actuated
904  DF  .~ Combined
905  DF  .~.~ With transmission line
906  DF  .~.~ With electrical connector
907  DF  .~ Antenna components
908  DF  .~.~ Active antenna component of particular shape
909  DF  .~.~ Refracting means and radio wave energy filters (e.g., lenses and polarizers)
910  DF  .~.~.~ Zoned type
911 R  DF  .~.~.~ Dielectric type
911 L  DF  .~.~.~.~ Luneberg type
912  DF  .~.~ Reflector or director
913  DF  .~.~.~ With impedance
914  DF  .~.~.~ Diverse curvature
915  DF  .~.~.~ Collapsible, foldable or adjustable
916  DF  .~.~.~ Made of detachable parts
700 MS  DF  .~ Microstrip
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DIGESTS
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DIG 1  DD  With vibration damper or wind catcher
DIG 2  DD  Satellite-mounted antenna