Abstract: Embodiments of endfire aperture-based traveling-wave antennas are described. For example, an embodiment, including a Vivaldi antenna, may have a director incorporated into the aperture region of the antenna to provide enhanced radiation directivity. The director may be a shaped dielectric that interacts with an electromagnetic field to reduce the divergence of the resultant beam as it exits the antenna. Additional dielectric substrate layers may be stacked on both sides of the antenna in order to balance the dielectric loading between the different conductors. The dielectric substrates may also eliminate contact between the antenna metallization and the lossy environment. Certain disclosed Vivaldi antennas may be used in tissue screening applications.

Abstract: A probe and an antenna, more particularly, a probe and antenna using a waveguide, which reduces the multiple reflection of electromagnetic waves. The probe includes: and the antenna each include a waveguide and a resonance unit is entirely or partially disposed in the inside of the waveguide, and comprising the resonance unit including a conductor.

Abstract: Described and shown is a dielectric antenna (1) having a dielectric feeding section (2), a first transition section (3) comprising a dielectric rod, a dielectric emitting section (5) and, a further, second transition section (4) forming a dielectric horn, wherein the feeding section (2) can be struck with electromagnetic radiation (6), electromagnetic radiation (6) can be guided with the first transition section (3) and the second transition section (4) and the electromagnetic radiation can be emitted from the emitting section (5) as airborne waves. The object of the present invention is to provide a dielectric antenna, which is adaptable as low-loss as possible to different mounting situations, which additionally is as low-reflection as possible and, at the same time is highly bundling. The object of the above-mentioned dielectric antenna is met in that the emitting section (5) is designed as dielectric tube connecting to the second transition section (4).

Abstract: Described are a notch antenna and an array antenna based on a low profile stripline feed. The notch antenna includes a planar dielectric substrate having upper and lower surfaces. Each surface has a conductive layer with an opening therein. A notch antenna element is disposed on the conductive layer of the upper surface at the opening. A stripline embedded in the planar dielectric substrate extends under the notch antenna element. The stripline is adapted to couple an RF signal between the stripline and the notch antenna element. A conductive via is electrically coupled to the stripline and extends from the stripline to the opening in the conductive layer on the lower surface so that the RF signal is accessible at the lower surface.

Abstract: The invention concerns a dual-polarisation antenna comprising: a microstrip substrate (1) covered, on a first face, with a metallisation (M) and, on a face opposite to the first face, with two microstrip lines; a dielectric resonator (2) having the form of a cylinder of revolution fixed to an etching (4) formed in the substrate, a first end of a first one of the two microstrip lines forming a first port of the antenna and a first end of the second microstrip line forming a second port of the antenna; and an electrically conductive linear element (3) placed in contact with the dielectric resonator and connected to a second end of the first line (L1), via a hole (5) formed in the substrate (1), a second end of the second line (L2) being substantially vertical to the etching.

Abstract: A leaky travelling wave array of elements provide a broadband radio frequency antenna.

Abstract: An antenna structure and a method of propagating an electromagnetic (EM) wave with the antenna structure. The antenna structure comprises a first aperture antenna element and a second element inside the first element adapted to strengthen the directivity of the wave.

Abstract: A rod antenna and a method for operating the rod antenna. The rod antenna includes a two-dimensional patch for radiating and/or receiving an electromagnetic wave, the patch extending along a plane defined by two coordinate axes orthogonal to each other. A feeding line is coupled to the patch for transferring signal energy to and/or from the patch, and a dielectric rod radiates and/or receives the electromagnetic wave, the rod extending longitudinally from the patch in direction of a third coordinate axis outside of the plane defined by the first two coordinate axes. A metal holder is coupled to the patch and to the rod for transferring the electromagnetic wave between the patch and the rod.

Abstract: Disclosed herein is a dielectric waveguide antenna including: a dielectric waveguide transmitting a signal applied from a power feeder; a dielectric waveguide radiator radiating the signal transmitted from the dielectric waveguide to the air through a first aperture; and a matching unit formed in a portion of the dielectric waveguide and controlling a serial reactance and a parallel reactance to thereby perform impedance matching between the dielectric waveguide radiator and the air, in order to reduce reflection generated in the first aperture during the radiation of the signal through the first aperture. Reflection in the aperture is reduced through the matching unit having various structures, thereby making it possible to improve characteristics of the dielectric waveguide antenna.

Abstract: A dielectric antenna having an at least partially dielectric body and an electrically conductive sheath, wherein the dielectric body can be struck on a supply section with electromagnetic radiation and the electromagnetic radiation can be at least partially emitted from the dielectric body via a lens-shaped radiation section. The conductive sheath essentially surrounds the dielectric body from the supply section to the radiation section and a supply opening is provided in the conductive sheath in the area of the supply section and a radiation opening is provided in the conductive sheath in the area of the radiation section. The dielectric antenna that is easy to produce, has little interference and has a short construction as a result of the dielectric antenna having essentially the cross section of the radiation opening in the area of the supply section.

Abstract: What is disclosed is a surface wave antenna configured to install on an electrically conductive structure. The surface wave antenna includes a first portion comprising a conductive element and an attachment element, and a second portion comprising a conductive element and an attachment element. The conductive element of the first portion and the conductive element of the second portion are configured to each form a conductive longitudinal portion of a horn receive element, and the attachment elements are configured to conductively couple the conductive elements together to form the horn receive element. The surface wave antenna also includes a dipole element comprising a first transmit element and a second transmit element. The surface wave antenna also includes a mounting element comprising a first dielectric mount and a second dielectric mount.

Abstract: Methods for assembling an active array system are described. In one exemplary embodiment, an active subarray panel assembly having a first surface with a first array of electrical contacts and a radiator aperture with an array of radiator structures and an aperture mounting surface with a second array of electrical contacts are assembled together. The first surface of the panel assembly and the aperture mounting surface of the radiator aperture are brought into contact with an adhesive layer including microwave interconnects in a pattern corresponding to the first array of electrical contacts and the second array of electrical contacts so that the adhesive layer is between the first surface of the panel assembly and the aperture mounting surface of the radiator aperture. Pressure, heat and vacuum are applied to cure the adhesive and complete engagement of the microwave interconnects.

Abstract: In some developing interconnect technologies, such as chip-to-chip optical interconnect or metal waveguide interconnects, misalignment can be a serious issue. Here, however, a interconnect that uses an on-chip directional antenna (which operates in the sub-millimeter range) to form a radio frequency (RF) interconnect through a dielectric waveguide is provided. This system allows for misalignment while providing the increased communication bandwidth.

Abstract: A waveguide includes a dielectric substrate having first and second opposed surfaces defining a longitudinal wave propagation path therebetween; and a conductive grid on the first surface of the substrate and comprising a plurality of substantially parallel metal strips, each defining an axis. The grid renders the first surface of the substrate opaque to a longitudinal electromagnetic wave propagating along the longitudinal wave propagation path and polarized in a direction substantially parallel to the axes of the strips. The grid allows the first surface of the substrate to be transparent to a transverse electromagnetic wave having a transverse propagation path that intersects the first and second surfaces of the substrate and having a polarization in a direction substantially normal to the plurality of metal strips. A diffraction grating on the second surface allows the waveguide to function as an antenna element that may be employed in a beam-steering antenna system.

Abstract: A composite material has a host dielectric with an artificial plasmon medium embedded in the host. The artificial plasmon medium has a dielectric function of less than 1, and a plasma frequency selected to result in the permittivity of the composite being substantially equal to 1.

Abstract: Methods and apparatus for integrating lens antennas for receivers are disclosed. A method of fabricating a lens in accordance with one or more embodiments of the present invention comprises integrating lens material with a dielectric material and flowing the lens material into a desired lens shape. An integrated lens antenna in accordance with one or more embodiments of the present invention comprises a dielectric material, a waveguide feed, coupled to the dielectric material through a leaky wave cavity, and a lens, coupled to the dielectric material opposite the leaky wave cavity, wherein material is first deposited onto the dielectric material, flowed into a desired lens shape and the desired lens shape is transferred to the dielectric material.

Abstract: A plasma device having low thermal noise, which results in a high signal-to-noise ratio (SNR) of the plasma device. The plasma device includes devices with a plasma that is responsive to electromagnetic radiation and/or electrical signals. In various configurations, the plasma device has a plasma in which the temperature, resistance, pressure, and/or collision frequency are at a level sufficiently low to produce an acceptable level of noise. In another configuration, the operating frequency of the plasma device is at a level sufficiently high to produce an acceptable level of noise. Decreasing the noise level results in increasing the signal-to-noise ratio and increasing the data rate. The plasma temperature is reduced by operating the plasma device in the afterglow state. The plasma electron temperature is reduced by confining high energy electrons in a potential well and by using an electron emitting filament.

Abstract: A waveguide includes a dielectric substrate having first and second opposed surfaces defining a longitudinal wave propagation path therebetween; and a conductive grid on the first surface of the substrate and comprising a plurality of substantially parallel metal strips, each defining an axis. The grid renders the first surface of the substrate opaque to a longitudinal electromagnetic wave propagating along the longitudinal wave propagation path and polarized in a direction substantially parallel to the axes of the strips. The grid allows the first surface of the substrate to be transparent to a transverse electromagnetic wave having a transverse propagation path that intersects the first and second surfaces of the substrate and having a polarization in a direction substantially normal to the plurality of metal strips. A diffraction grating on the second surface allows the waveguide to function as an antenna element that may be employed in a beam-steering antenna system.

Abstract: A plurality of conductive strip elements compose multilayer loading structures on top and bottom surfaces of a dielectric transmission substrate, by which a part of intra-substrate transmission components of a electromagnetic wave are leaked out of the surfaces. Each multilayer loading structure includes a first conductive strip group of conductive strip elements within a first plane, and a second conductive strip group of conductive strip elements within a second plane, and the first and second conductive strip groups are formed to be capacitively coupled to each other. In each of the first and second conductive strip groups, the conductive strip elements are placed at intervals of a distance of a quarter or less of a reference adjacent distance, where the reference adjacent distance is defined as a distance for generating spatial harmonics of the electromagnetic wave on the surfaces of the dielectric transmission substrate.

Abstract: Provided is a circuit for an electronic device having a non-planar transparent resonator. The transparent resonator is mounted on said circuit so as to at least partially occupy a footprint of another component of the circuit. The transparent resonator forms part of a light pathway on said circuit for transmitting light to or from said another component. Also provided is a transparent dielectric resonator antenna (DRA) for optical applications. Since the DRA is transparent, it can let light pass through itself and, thus, the light can be utilized by an optical part of a system or device. The transparent DRA can be placed on top of a solar cell. Since the DRA does not block the light, the light can reach the solar cell panel and power can be generated for the system or device. The system or device so obtained is very compact because no extra footprint is needed within the system or device for the DRA. It finds application in compact wireless applications that need a self-sustaining power device.

Abstract: A multiband antenna system installed onto a circuit board of a mobile device is provided. The antenna system includes a planar dielectric substrate, an upper conductor formed on an upper surface of the dielectric substrate and shaped as a coplanar wave guide and includes first and second ground parts and a radiator, and a lower conductor formed on the lower surface of the dielectric substrate and shaped as a coplanar wave guide and includes third and fourth ground parts and an electrode part, via-holes that pass through the dielectric substrate and are electrically connected to the first ground part to the third, the second ground part to the fourth, and the radiator to the electrode part, respectively, and solder balls connect the electrode part to an electric wire of the circuit board and also the third and fourth ground parts to the ground of the circuit board.

Abstract: A leaky wave antenna contains a first and a second leaky wave antenna structure back to back against each other. Each antenna structure comprises a dielectric body and an elongated wave carrying structure, such as a slot in a conductive ground plane. In each leaky wave antenna structure the body and wave carrying structure are mutually arranged to radiate a leaky wave from the wave carrying structure through the dielectric body, the leaky wave radiating at a respective angle to the wave carrying structure. The dielectric bodies of the first and second wave antenna structure adjoin each other in a common plane that is at said respective angles to the wave carrying structures of the first and second wave antenna structure respectively, so that the ground planes are at an angle with respect to each other. The respective wave carrying structures run over into each other at said common plane, the antenna comprising a feed arranged to excite waves in both the respective wave carrying structures together.

Abstract: A feed assembly for a reflector antenna having a unitary portion of dielectric material, a proximal end of the unitary portion configured for connection with the reflector antenna. The unitary portion having a waveguide portion extending between the proximal end and a sub reflector support having a sub reflector surface at a distal end. The waveguide portion and the sub reflector surface covered with an RF reflective material. The unitary portion may be cost effectively formed via, for example injection molding and or machining. Alternatively, the feed assembly may be formed as a horn feed, without a sub reflector.

Abstract: A plane wave antenna including: a horn antenna; a waveguide at least partially inside the horn antenna, wherein the waveguide includes: a central dielectric slab increasing in width toward the horn antenna and with a first dielectric constant, an upper slab above the central dielectric slab with a second dielectric constant, and a lower slab below the central dielectric slab with the second dielectric constant; wherein the central dielectric slab has a substantially constant thickness less than a quarter of a wavelength at a highest frequency of operation of the plane wave antenna.

Abstract: A dielectric polyrod having at least one tapered section, where a section exposed outside of the waveguide is tapered a long a curve that depends on the dielectric constant of the material used. The invention also relates to an aperture matched polyrod antenna which includes the same and an inductive tuning element used to achieve wideband impedance match and to create a Gaussian beam in the radiating near field of the antenna, suitable to mimic a small region plane wave.

Abstract: A metalized plastic antenna includes a plastic antenna body with metallization on the inside. In this arrangement metallization is used for conducting electromagnetic waves. Furthermore, metallization may be implemented as a protective coating so that chemical resistance of the plastic antenna may be ensured even in the case of corrosive environmental conditions.

Abstract: In some embodiments, a circularly polarized horn antenna may include a circular polarizer having a step shape. In some embodiments, a circularly polarized horn antenna may include a choke that is offset in position with respect to the antenna aperture. Such antennas may have a relatively constant beamwidth with respect to frequency, compact size, and/or low weight.

Abstract: Described and shown is a dielectric antenna (1) having a dielectric feeding section (2), a first transition section (3) comprising a dielectric rod, a dielectric emitting section (5) and, a further, second transition section (4) forming a dielectric horn, wherein the feeding section (2) can be struck with electromagnetic radiation (6), electromagnetic radiation (6) can be guided with the first transition section (3) and the second transition section (4) and the electromagnetic radiation can be emitted from the emitting section (5) as airborne waves. The object of the present invention is to provide a dielectric antenna, which is adaptable as low-loss as possible to different mounting situations, which additionally is as low-reflection as possible and, at the same time is highly bundling. The object of the above-mentioned dielectric antenna is met in that the emitting section (5) is designed as dielectric tube connecting to the second transition section (4).

Abstract: A waveguide including: a first section including a first surface, a second surface, an upper wall, and a lower wall facing the upper wall; and a second section extending from the second surface; wherein the first section includes an upper ridge on the upper wall of the first section and a lower ridge on the lower wall of the first section, wherein the second section includes an upper conductor extending from a top portion of the second surface and a lower conductor extending from a lower portion of the second surface with a gap between the upper and lower conductors, wherein the upper conductor is electrically connected to the upper ridge, wherein the lower conductor is electrically connected to the lower ridge, and wherein the upper and lower conductors are adapted to propagate a wave and reduce discontinuity of the wave a connection between the first and second sections.

Abstract: Heretofore, a plurality of packages were used in a high frequency module in which a plurality of waveguide terminals were positioned resulting in problems, such as degradation of characteristics in the connection lines between packages, lower ease of assembly when mounting and connecting the connection lines, increased cost, and so forth. To solve these problems, a plurality of cavities having a part or the entire side metallized is formed in a multi-layer dielectric substrate. The multi-layer dielectric substrate is provided with a plurality of waveguide terminals, microstrip line-waveguide converters, RF lines, bias and control signal wiring, and bias and control signal pads. A high frequency circuit is mounted within the cavity and sealed with a seal and cover. This is intended to reduce the number of package, improve performance, improve fabrication, and lower the cost.

Abstract: A probe and an antenna reduces the multiple reflection of electromagnetic waves. The probe includes: a waveguide; and a resonance unit entirely or partially disposed in the inside of the waveguide and comprising a conductor.

Abstract: In an antenna for a level meter employing the radar principle, a fastening device is provided for detachably mounting a dielectric insert in the antenna. The fastening device may be a continuous clamping collar that clamps the dielectric insert in place in the antenna. This offers a simple, universally employable possibility for fastening a dielectric insert in the antenna.

Abstract: The present invention provides a highly dielectric elastomer composition which shows a high dielectric constant in a wide temperature range from low to high temperature and has a low dielectric loss tangent, and a dielectric antenna composed of the highly dielectric elastomer composition. A dielectric antenna including a molding of a highly dielectric elastomer composition composed of an elastomer and a highly dielectric ceramic powder mixed with the elastomer and an electrode formed on the molding. The highly dielectric ceramic powder of barium titanate.neodymium ceramic has a temperature coefficient ?(unit: 1/° C.) of a dielectric constant of the ceramic powder on 25° C. standard ranging from ?200×10?6 to 100×10?6 over a temperature range from ?40° C. to 100° C. The dielectric constant of the highly dielectric elastomer composition is ?7 and a dielectric loss tangent thereof is ?0.01.

Abstract: A microwave antenna assembly includes first and second elongated conductors, and a dielectric body portion. The first elongated conductor is associated with a first radiating portion at least partially along the length thereof. A second elongated conductor is disposed within the first elongated conductor and is associated with a second radiating portion at least partially along the length thereof. The dielectric body portion is disposed along the length of at least one of the first and second elongated conductors and the dielectric body portion includes two or more radial partition of dielectric material having difference dielectric constants.

Abstract: A scanning antenna with an antenna element having an evanescent coupling portion includes a waveguide assembly including a transmission line, adjacent the coupling portion, through which an electromagnetic signal is transmitted, permitting evanescent coupling of the signal between the transmission line and the antenna element. First and second conductive waveguide plates, on opposite sides of the transmission line, define planes that are substantially parallel to the axis of the transmission line, each plate extending distally from a proximal end adjacent the antenna element, whereby the propagated signal forms a beam that is confined to the space between the plates and thus limited to a plane that is parallel to the planes defined by the plates. The signal coupled between the transmission line and the antenna element is preferably polarized so that its electric field component is in a plane parallel to the planes defined by the plates.

Abstract: The invention discloses a dual frequency feed assembly for receiving signals of both a first band and a second band lower than the first band, or transmitting signals of one of the first band and the second band while receiving signals of the other band. The dual frequency feed assembly includes an orthogonal-mode transducer, which includes: a core unit having an inner waveguide, an outer waveguide with a diameter larger than that of the inner waveguide and the two waveguides being concentric, a first band output/input port connected to the inner waveguide, and a second band output/input port; and two or four detachable branch waveguides connected to the core unit. An O-ring is provided at each connection between the core unit and the branch waveguides. The dual frequency feed assembly further comprises a first band polarizer made of a metal septum and/or a second band polarizer made of dielectric slabs, when receiving circularly polarized signals.

Abstract: A waveguide includes a dielectric substrate having first and second opposed surfaces defining a longitudinal wave propagation path therebetween; and a conductive grid on the first surface of the substrate and comprising a plurality of substantially parallel metal strips, each defining an axis. The grid renders the first surface of the substrate opaque to a longitudinal electromagnetic wave propagating along the longitudinal wave propagation path and polarized in a direction substantially parallel to the axes of the strips. The grid allows the first surface of the substrate to be transparent to a transverse electromagnetic wave having a transverse propagation path that intersects the first and second surfaces of the substrate and having a polarization in a direction substantially normal to the plurality of metal strips. A diffraction grating on the second surface allows the waveguide to function as an antenna element that may be employed in a beam-steering antenna system.

Abstract: Methods for assembling an active array system are described. In one exemplary embodiment, an active subarray panel assembly having a first surface with a first array of electrical contacts and a radiator aperture with an array of radiator structure and an aperture mounting surface with a second array of electrical contacts are assembled together. The first surface of the panel assembly and the aperture mounting surface of the radiator aperture are brought into contact with an adhesive layer including microwave interconnects in a pattern corresponding to the first array of electrical contacts and the second array of electrical contacts so that the adhesive layer is between the first surface of the panel assembly and the aperture mounting surface of the radiator aperture. Pressure, heat and vacuum are applied to cure the adhesive and complete engagement of the microwave interconnects.

Abstract: A horn antenna includes a conducting horn having an inner wall and a first dielectric layer lining the inner wall of the conducting horn. The first dielectric layer includes a metamaterial having a relative dielectric constant of greater than 0 and less than 1. The horn antenna may further include a dielectric core abutting at least a portion of the first dielectric layer. In one aspect, the dielectric core includes a fluid. A waveguide including a metamaterial is also disclosed.

Abstract: Antenna window structures and antennas are provided for electronic devices. The electronic devices may be laptop computers or other devices that have conductive housings. Antenna windows can be formed from dielectric members. The dielectric members can have elastomeric properties. An antenna may be mounted inside a conductive housing beneath a dielectric member. The antenna can be formed from a parallel plate waveguide structure. The parallel plate waveguide structure may have a ground plate and a radiator plate and may have dielectric material between the ground and radiator plates. The ground plate can have a primary ground plate portion and a ground strip. The ground strip may reflect radio-frequency signals so that they travel through the dielectric member. The antenna may handle radio-frequency antenna signals in one or more communications bands. The radio-frequency antenna signals pass through the dielectric member.

Abstract: A dielectric antenna having an at least partially dielectric body and an electrically conductive sheath, wherein the dielectric body can be struck on a supply section with electromagnetic radiation and the electromagnetic radiation can be at least partially emitted from the dielectric body via a lens-shaped radiation section. The conductive sheath essentially surrounds the dielectric body from the supply section to the radiation section and a supply opening is provided in the conductive sheath in the area of the supply section and a radiation opening is provided in the conductive sheath in the area of the radiation section. The dielectric antenna that is easy to produce, has little interference and has a short construction as a result of the dielectric antenna having essentially the cross section of the radiation opening in the area of the supply section.

Abstract: A scanning antenna with an antenna element having an evanescent coupling portion includes a waveguide assembly including a transmission line, adjacent the coupling portion, through which an electromagnetic signal is transmitted, permitting evanescent coupling of the signal between the transmission line and the antenna element. First and second conductive waveguide plates, on opposite sides of the transmission line, define planes that are substantially parallel to the axis of the transmission line, each plate extending distally from a proximal end adjacent the antenna element, whereby the propagated signal forms a beam that is confined to the space between the plates and thus limited to a plane that is parallel to the planes defined by the plates. The signal coupled between the transmission line and the antenna element is preferably polarized so that its electric field component is in a plane parallel to the planes defined by the plates.

Abstract: An antenna comprises a conically shaped body of dielectric material. Cross-sections of the body have truncated elliptical shape, wherein each shape is truncated substantially through a first focus of the elliptical shape along a truncation line that extends substantially perpendicularly to a main axis of the elliptical shape. The second focus of the elliptical shape lies within the body. An elongated wave carrying structure such as a slot in a conductive ground plane extends substantially along a focal line through the first focus of the elliptical shapes in successive cross-sections. This structure supports transmission and/or reception over a wide range of frequencies. In an embodiment a multi-frequency feed structure is integrated in the ground plane of the antenna.

Abstract: A horn antenna includes a conducting horn having an inner wall and a first dielectric layer lining substantially the entire inner wall of the conducting horn. The first dielectric layer includes a metamaterial having a dielectric constant of greater than 0 and less than 1. The horn antenna may further include a dielectric core abutting at least a portion of the first dielectric layer. In one aspect, the dielectric core includes a fluid. A waveguide and a power combiner assembly, each including a metamaterial, are also disclosed.

Abstract: A plurality of conductive strip elements compose multilayer loading structures on top and bottom surfaces of a dielectric transmission substrate, by which a part of intra-substrate transmission components of a electromagnetic wave are leaked out of the surfaces. Each multilayer loading structure includes a first conductive strip group of conductive strip elements within a first plane, and a second conductive strip group of conductive strip elements within a second plane, and the first and second conductive strip groups are formed to be capacitively coupled to each other. In each of the first and second conductive strip groups, the conductive strip elements are placed at intervals of a distance of a quarter or less of a reference adjacent distance, where the reference adjacent distance is defined as a distance for generating spatial harmonics of the electromagnetic wave on the surfaces of the dielectric transmission substrate.

Abstract: An article having an electromagnetic coupling module attached thereto includes an electromagnetic coupling module and a PET bottle having the electromagnetic coupling module bonded thereto. The electromagnetic coupling module includes a wireless IC chip arranged to process transmission and reception signals and the feed circuit board having the wireless IC chip mounted thereon. The feed circuit board includes a feed circuit including a resonant circuit having a predetermined resonant frequency. The feed circuit performs characteristic impedance matching between the PET bottle and the wireless IC chip. The PET bottle functions as a radiator arranged to radiate a transmission signal supplied from the feed circuit using electromagnetic field coupling and to supply a received reception signal to the feed circuit using electromagnetic field coupling.

Abstract: A waveguide including: a first section including a first surface, a second surface, an upper wall, and a lower wall facing the upper wall; and a second section extending from the second surface; wherein the first section includes an upper ridge on the upper wall of the first section and a lower ridge on the lower wall of the first section, wherein the second section includes an upper conductor extending from a top portion of the second surface and a lower conductor extending from a lower portion of the second surface with a gap between the upper and lower conductors, wherein the upper conductor is electrically connected to the upper ridge, wherein the lower conductor is electrically connected to the lower ridge, and wherein the upper and lower conductors are adapted to propagate a wave and reduce discontinuity of the wave a connection between the first and second sections.

Abstract: A dual-band dielectric resonator antenna (DRA) is designed by splitting a rectilinear DR and carving notches and tunnels off the DR. The antenna comprises a substrate, a microstrip line, a ground plane and a resonant structure, wherein a first resonant part and a second resonant part of the resonant structure are separated by a gap. The proposed DRA can cover both the WiMAX (3.4-3.7 GHz) and the WLAN (5.15-5.35 GHz) bands by engraving notches and tunnels at different positions of the first resonant part and the second resonant part.

Abstract: A device for emitting and receiving electromagnetic radiation, in particular microwave radiation, including at least one feed element, at least one hollow conductor and at least one rod radiator, the feed element being situated on a first end of the hollow conductor in such a way that the power emitted by the feed element is passed through the hollow conductor and/or the received power that is passed through the hollow conductor is injected into the feed element and the rod radiator is situated at a second end of the hollow conductor in such a way that the transmit power passed through the hollow conductor is bundled and emitted via the rod radiator and/or the incoming received power is bundled by the rod radiator and conducted into the hollow conductor.

Abstract: The present invention is applicable to satellite ground station antennas having a wide field of view in comparison to the satellites with which the antenna connects. One embodiment includes a parabolic reflector having a size that corresponds to a beam with an angular half-width larger than the spacing between neighboring interfering satellites. It also has a feed comprising at least two dielectric rod-based surface waveguides coupled to the parabolic reflector configured to have a high sensitivity for a target satellite within the angular half-width of the reflector beam and a low sensitivity for neighboring interfering satellites within the angular half-width of the reflector beam.