Abstract: A antenna dome assembly 10 comprises a dome 12 having a main vertical axis 14 and comprising a sidewall 16 having an external surface 18 and an internal surface 20 defining a first chamber 22. The first chamber has an axially extending centre region 24 and an axially extending outer band region 26 between the centre region 24 and the internal surface 20. The centre region 24 extends between 20% and 80% of a transverse line 28 through the dome. The assembly 10 further comprises an array 30 of elongate omnidirectional antennas. The array comprises at least one elongate omnidirectional antenna 32 having a vertical polarization and at least one elongate omnidirectional antenna 34 having a horizontal second polarization. The antennas of the array 30 are mounted in spaced relation relative to one another in at least one of: in the band region 26, on the internal surface 20 and on the external surface 22.

Abstract: The invention provides for a broad band directional antenna (10) comprising a ground plane (12) having an axis (14) extending perpendicularly to the ground plane, an active radiator (13) which is axially spaced from the ground plane, a metamaterial ground plane assembly (16) and a conductive pillar (28.1) between the first conductive wall and the ground plane. The metamaterial ground plane assembly comprises a metamaterial ground plane (17), a first conductive wall (20) adjacent a periphery of the metamaterial ground plane, the first conductive wall having a bottom (22) and atop (24) and a second wall (26) comprising two mutually insulated conductive wall parts (26.1, 26.2) located spaced from and outside of the first conductive wall. The bottom of the first conductive wall is located between the ground plane and the metamaterial ground plane and the top of the first conductive wall is located beyond the active radiator.

Abstract: There is provided for a system (10) for providing local area network (LAN) services at a dwelling (12.6) which dwelling comprises an interior and an exterior on opposed sides of a targeted face (13) of the dwelling. The system comprises a wireless radio router (14) having an antenna (16). The targeted face comprises an electromagnetic wave transparent part (24.1). The wireless radio router with the antenna is located on the exterior of the dwelling and is in data communication with a backend (18) via a communications network (20). The antenna is associated with a radiation pattern (22) configured to illuminate the interior of the dwelling via the electromagnetic wave transparent part with electromagnetic waves from the exterior of the dwelling, to provide LAN services at the dwelling.

Abstract: A system 10 for providing communication services to user stations 14.1 to 14.n which are spaced on each of a first side 16 and a second side 18 of a corridor 12. The system comprises at least one corridor node 20. The corridor node comprises a radio transceiver arrangement 54 and a spaced reflector 70. The transceiver arrangement is connected to an antenna arrangement 58, which comprises a reflective feed antenna 67. The antenna arrangement has a radiation pattern comprising an elongate lobe 30, having a main axis 38, which illuminates user stations associated with the corridor node on one of the first side and the second side. The spaced reflector reflects signals 88 impinging from the reflective feed antenna in accordance with a reflected radiation pattern, comprising one reflected lobe 34, having a main axis 42, for illuminating user stations associated with the corridor node on the other of the first side and the second side.

Abstract: The invention provides for a broad band directional antenna (10) comprising a ground plane (12) having an axis (14) extending perpendicularly to the ground plane, an active radiator (13) which is axially spaced from the ground plane, a metamaterial ground plane assembly (16) and a conductive pillar (28.1) between the first conductive wall and the ground plane. The metamaterial ground plane assembly comprises a metamaterial ground plane (17), a first conductive wall (20) adjacent a periphery of the metamaterial ground plane, the first conductive wall having a bottom (22) and atop (24) and a second wall (26) comprising two mutually insulated conductive wall parts (26.1, 26.2) located spaced from and outside of the first conductive wall. The bottom of the first conductive wall is located between the ground plane and the metamaterial ground plane and the top of the first conductive wall is located beyond the active radiator.

Abstract: An antenna 10 comprises a single wire wound in a helix 12 comprising a plurality of turns 1, 2, 3, n, n+1, . . . p around a main axis 11 with immediately adjacent turns having an inter-turn spacing between them. The helix has a back end 14 and a front end 16 and the main axis defines a main beam direction. A transverse crosssectional area of the helix monotonously decreases from the back end 14 to the front end 16. The inter-turn spacing S1 . . . Sn . . . monotonously decreases from the backend 14 to the front end 16. A feed-point 13 is provided at the back end 14.

Abstract: A communications system 10 comprises a source arrangement 12 of periodic waves. The source arrangement is configured to generate an interferometric wave pattern having a plurality of lobes 18.1 to 18.13. Each lobe has a main axis 20 diverging from an origin 22 at the source arrangement and a null 24 between any two adjacent lobes. At least one sensor arrangement 26 is provided for the waves. The sensor arrangement comprises a first sensor 28 and a second sensor 30 which are spaced from one another. A first signal source 40 is connected to the source arrangement 12 via a phase shift arrangement 41 to generate a first interferometric wave pattern 18 which illuminates the first sensor 28 more than the second sensor 30. A second signal source 42 is connected to the source arrangement via the phase shift arrangement to generate a second interferometric pattern 46 which is off-set from the first interferometric pattern and which illuminates the second sensor more than the first sensor.

Abstract: A system 10 for providing communication services to user stations 14.1 to 14.n which are spaced on first and second opposed sides 16, 18 of an elongate corridor 12, comprises a first node 20 and a second node 22. The nodes drive respective radiation patterns comprising at least first, second, third and fourth lobes 30, 32, 34 and 36 having respective main axes 38, 40, 42 and 44. The arrangement is such that in respect of the second corridor node: main axis 38 is directed towards a first region 14.27 which is on the first side 16, to illuminate stations on the first side; main axis 40 is directed towards a second region 14.46 which is on the second side 18, to illuminate stations on the second side; main axis 42 is directed towards a third region 14.10 which is on the first side, to illuminate stations on the first side; and main axis 44 is directed towards a fourth region 14.63, to illuminate stations on the second side.

Abstract: A system 10 for providing communication services to user stations 14.1 to 14.n which are spaced on first and second opposed sides 16, 18 of an elongate corridor 12, comprises a first node 20 and a second node 22. The nodes drive respective radiation patterns comprising at least first, second, third and fourth lobes 30, 32, 34 and 36 having respective main axes 38, 40, 42 and 44. The arrangement is such that in respect of the second corridor node: main axis 38 is directed towards a first region 14.27 which is on the first side 16, to illuminate stations on the first side; main axis 40 is directed towards a second region 14.46 which is on the second side 18, to illuminate stations on the second side; main axis 42 is directed towards a third region 14.10 which is on the first side, to illuminate stations on the first side; and main axis 44 is directed towards a fourth region 14.63, to illuminate stations on the second side.

Abstract: A communications system 10 comprises a source arrangement 12 of periodic waves. The source arrangement is configured to generate an interferometric wave pattern having a plurality of lobes 18.1 to 18.13. Each lobe has a main axis 20 diverging from an origin 22 at the source arrangement and a null 24 between any two adjacent lobes. At least one sensor arrangement 26 is provided for the waves. The sensor arrangement comprises a first sensor 28 and a second sensor 30 which are spaced from one another. A first signal source 40 is connected to the source arrangement 12 via a phase shift arrangement 41 to generate a first interferometric wave pattern 18 which illuminates the first sensor 28 more than the second sensor 30. A second signal source 42 is connected to the source arrangement via the phase shift arrangement to generate a second interferometric pattern 46 which is off-set from the first interferometric pattern and which illuminates the second sensor more than the first sensor.

Abstract: A monitoring system 22 for a distributed antenna system (DAS) 10 is provided. The DAS comprises central transmitter 12 which is connected by a signal transmission network 14 to a plurality of distributed antenna devices (DAD) 16.1 to 16.n. The network comprises physical branches. Each of the DAD's is connected to a respective sub-branch 14.11 and comprises at least one antenna 18. The antenna is associated with a frequency band having a center frequency fc and an associated wavelength Ac. The monitoring system comprises a central monitoring unit (CMU) 24 which is coupled to the network 14. A monitoring device 28.1 is associated with at least one of the DAD's and permanently mounted a distance d<2?c away from the antenna of the DAD. The monitoring device comprises a controller 30, a transceiver 32 and an antenna 34.

Abstract: An antenna 10 comprises at least a first pair 12 of elongate radiating elements and a second pair 14 of elongate radiating elements. Each pair comprises a first element 12.1 and a second element 12.2. Each element has a feed end 12.11 and a distal end 12.12. The first and second elements of each of the at least first pair and second pair have their respective feed ends 12.11, 12.21 in juxtaposition relative to one another and extend in diverging relationship relative to one another in a direction from their feed ends towards their distal ends. The at least first and second pairs are electrically connected in parallel. In some embodiments the elements may diverge exponentially. The invention also relates to antennas which may be packaged in at least partially knock-down form to be assembled or deployed conveniently at a user site.

Abstract: A monitoring system 22 for a distributed antenna system (DAS) 10 is provided. The DAS comprises central transmitter 12 which is connected by a signal transmission network 14 to a plurality of distributed antenna devices (DAD) 16.1 to 16.n. The network comprises physical branches. Each of the DAD's is connected to a respective sub-branch 14.11 and comprises at least one antenna 18. The antenna is associated with a frequency band having a centre frequency fc and an associated wavelength Ac. The monitoring system comprises a central monitoring unit (CMU) 24 which is coupled to the network 14. A monitoring device 28.1 is associated with at least one of the DAD's and permanently mounted a distance d<2 ?c away from the antenna of the DAD. The monitoring device comprises a controller 30, a transceiver 32 and an antenna 34.

Abstract: An antenna system (10) comprises a transmitter part (12) comprising n inputs (40.1 to 40.n) to the antenna system, a transmitter part antenna array 18 comprising k radiating elements; a respective beam-forming network (20.1 to 20.n) connected to each of the n inputs with each beam-forming network having a plurality of outputs; and k signal combiners (22.1 to 22.k) each having a plurality of inputs and a respective output. Each output of each beam-forming network is connected to a respective input of each of the signal combiners and the output of each signal combiner is connected via an output stage to a respective one of the k radiating elements. The beam-forming networks are configured such that each of the transmitter part inputs is associated with a respective transmitter part beam (24.1 to 24.n) having a respective beam-width.

Abstract: This invention relates to a device and method for containing animals, and more particularly, but not exclusively, to a device and method for containing domesticated animals within a set perimeter (19). According to a first aspect of the invention there is provided an animal containment device comprising at least one magnet (12) for setting a perimeter (19); and a transceiver securable to an animal, the transceiver configured to detect a magnetic field emitted from the magnet, the transceiver further being provided with alerting means, wherein the alerting means is configured to emit a signal when the transceiver detects the magnetic field.

Abstract: The invention relates to a water safety device and more particularly, to a safety device for swimming pools or fish ponds. There is provided a device for monitoring a body of water comprising a first pressure sensor for measuring a base pressure level within a first reference cavity in the device, a second pressure sensor for measuring a water pressure level being exerted on the second pressure sensor by the body of water, computing means for calculating differential pressure between the base pressure level and the water pressure level, and alerting means in communication with the device for generating an alert when the differential pressure level and water pressure level is increased due to an elevation in the water pressure level when a person enters the body of water.

Abstract: An antenna 10 comprises at least a first pair 12 of elongate radiating elements and a second pair 14 of elongate radiating elements. Each pair comprises a first element 12.1 and a second element 12.2. Each element has a feed end 12.11 and a distal end 12.12. The first and second elements of each of the at least first pair and second pair have their respective feed ends 12.1 1, 12.21 in juxtaposition relative to one another and extend in diverging relationship relative to one another in a direction from their feed ends towards their distal ends. The at least first and second pairs are electrically connected in parallel. In some embodiments the elements may diverge exponentially. The invention also relates to antennas which may be packaged in at least partially knock-down form to be assembled or deployed conveniently at a user site.

Abstract: An antenna system (10) comprises a transmitter part (12) comprising n inputs (40.1 to 40.n) to the antenna system, a transmitter part antenna array 18 comprising k radiating elements; a respective beam-forming network (20.1 to 20.n) connected to each of the n inputs with each beam-forming network having a plurality of outputs; and k signal combiners (22.1 to 22.k) each having a plurality of inputs and a respective output. Each output of each beam-forming network is connected to a respective input of each of the signal combiners and the output of each signal combiner is connected via an output stage to a respective one of the k radiating elements. The beam-forming networks are configured such that each of the transmitter part inputs is associated with a respective transmitter part beam (24.1 to 24.n) having a respective beam-width.

Abstract: A monitoring system 22 for a distributed antenna system (DAS) 10 is provided. The DAS comprises central transmitter 12 which is connected by a signal transmission network 14 to a plurality of distributed antenna devices (DAD) 16.1 to 16.n. The network comprises physical branches. Each of the DAD's is connected to a respective sub-branch 14.11 and comprises at least one antenna 18. The antenna is associated with a frequency band having a center frequency fc and an associated wavelength Ac. The monitoring system comprises a central monitoring unit (CMU) 24 which is coupled to the network 14. A monitoring device 28.1 is associated with at least one of the DAD's and permanently mounted a distance d<2?c away from the antenna of the DAD. The monitoring device comprises a controller 30, a transceiver 32 and an antenna 34.