165results about "Helical antennas" patented technology

Transport networks, network elements, and methods of use are described herein, including a transmitter comprising a client-side input, transmitter circuitry, and antennas. The client-side input is configured to receive baseband signals having client data encoded therein. The transmitter circuitry is configured to receive the baseband signals from the client-side input and generate antenna feed signals based on the baseband signals. The antennas are configured to receive the antenna feed signals from the transmitter circuitry, generate radiated signals based on the antenna feed signals, and couple the radiated signals into a hollow waveguide. Each of the radiated signals is a radiated electromagnetic wave configured for coherent detection and has a frequency in a range between 300 Gigahertz (GHz) and 10 Terahertz (THz).

A helix antenna and methods of making and using helix antenna to concurrently or independently radiate pulses in a very high frequency (VHF) band in a range of about 240 MHz to about 270 MHz and / or in an ultrahigh frequency (UHF) band in a range of about 360 MHz to about 380 MHz which can be useful in space to ground data transmissions, subsurface radar, and measurement of ice and snow pack.

Antenna for a motor vehicle, comprising a mounting plate suitable to be connected to a mounting surface of the motor vehicle, a first printed circuit board adapted to be connected, in a substantially horizontal position, to the mounting plate, first and second radiating elements for transceiving respective first and second signals with the environment outside the antenna.Both radiating elements comprise a respective printed circuit board along which there are arranged respectively a first electrically conducting track and a second electrically conductive track which extend along the respective printed circuit board along a substantially helical or serpentine path.The first radiating element has a maximum height, measured from the top surface of the first printed circuit board along the substantially vertical direction, and the first height of the first electrically conducting track is less than or equal to one-half of the maximum height of the first radiating element.

The invention discloses an ultra-wide beam broadband four-arm helical antenna based on parasitic loading. The ultra-wide beam broadband four-arm helical antenna comprises a circular dielectric substrate, an arc parasitic radiation arm, a cylindrical support, a flexible dielectric substrate, a stepped impedance winding helical arm, a floor and a coaxial feed. The antenna can realize wide axial ratio beam width and wide half-power beam width in a working frequency band range of 2-2.5 GHz, meanwhile, the antenna has a relatively small size, the stability, the anti-interference capability and the coverage range of a wireless communication system are improved, and the antenna can flexibly cope with various complex scenes. In addition, the antenna works in a wide frequency band and has a wide 3-dB axial ratio beam width in the wide frequency band, for example, the 3-dB axial ratio beam width at a 2.2 GHz frequency point reaches 235 degrees; the 3-dB axial ratio beam width at the 2.3 GHz frequency point reaches 252 degrees; and the 3-dB axial ratio beam width at a 2.4 GHz frequency point reaches 236 degrees.

The invention belongs to the technical field of antennas, and relates to a circularly polarized antenna array, which comprises four antennas distributed in an array, the antenna comprises a first radiation layer, a first dielectric layer, a second radiation layer, a second dielectric layer and a floor layer which are sequentially stacked from top to bottom, the first radiation layer comprises two spiral radiation arms which are arranged at an interval and are distributed in a central symmetry manner so as to form a circularly polarized spiral antenna; the second radiation layer and the first radiation layer are connected and have the same structure; the first radiation layer and the second radiation layer are connected with the feed structure; the radiation arms comprise a first radiation arm and a second radiation arm; the initial ends of the first radiation arm and the second radiation arm are arranged in the middle of the first dielectric layer, the terminal of the first radiation arm is arranged in the middle of the antenna array, and the terminal of the second radiation arm is arranged at the corner of the antenna array. According to the invention, ultra wide band, high gain, circular polarization and interference resistance can be realized at the same time, the axial ratio performance is good, and miniaturization is facilitated.

An antenna system is provided. The antenna system includes a base structure, a transmission line, a ground plane, and a backfire antenna element. The transmission line extends from the base structure and is coupled to the base structure at a first end of the transmission line. The ground plane is coupled to the transmission line at a second end of the transmission line. The backfire antenna element extends between the ground plane and the base structure. The backfire antenna element is coupled to the second end of the TEM line.

This application provides an antenna, antenna array, and communication device, aiming to construct more degrees of freedom and antenna ports within a limited antenna panel size. The antenna includes: four independent feed points; and four helical arms corresponding one-to-one with the four feed points, each helical arm connected to its corresponding feed point. The helical end of each helical arm can be connected to its corresponding feed point using an open-circuit stub structure, and / or, the end of each helical arm can be coupled to a parasitic patch, and / or, the spacing w between two adjacent helical arms satisfies: w ≤ λ / 10, where λ is the operating wavelength. This design provides four degrees of freedom and widens the antenna bandwidth. Within the limited antenna panel size, this is beneficial for improving system throughput.

A wideband spiral antenna system for a vehicle is provided. A planar spiral antenna is fabricated on a substrate. The planar spiral antenna includes an antenna feed. A first dielectric panel is disposed adjacent to a first side of the substrate. A dielectric puck has a first puck side disposed adjacent to the antenna feed on a second side of the substrate opposing the first side of the substrate. A radio frequency (RF) connector is disposed adjacent to a second puck side of the dielectric puck. The second puck side opposes the first puck side of the dielectric puck. One or more conductive vias extend from the antenna feed through the dielectric puck to the RF connector electrically coupling the antenna feed to the RF connector.

Single band and multiband wireless antennas are an important element of wireless systems. Competing tradeoffs of overall footprint, performance aspects such as impedance matching and cost require not only consideration but become significant when multiple antenna elements are employed within a single antenna such as to obtain circular polarization transmit and / or receive. Accordingly, it would be beneficial to provide designers of a wide range of electrical devices and systems with compact single or multiple frequency band antennas which, in addition to providing the controlled radiation pattern and circular polarization purity (where required) are impedance matched without substantially increasing the footprint of the antenna and / or the complexity of the microwave / RF circuit interfaced to them, whilst supporting multiple signals to / from multiple antenna elements in antennas employing them. Solutions present achieve this through provisioning one or more capacitive series reactances discretely or in combination with one or more shunt capacitive reactances.

An RFID transponder (1) comprising a radiating antenna (2) and a pod (3), a pod (3), and a method of manufacturing a panel (29) including the pod (3) are disclosed.

To provide an antenna system.SOLUTION: An antenna system includes a base structure, a transmission line, a ground plane, and a backfire antenna element. The transmission line extends from the base structure and is coupled to the base structure at a first end of the transmission line. The ground plane is coupled to the transmission line at a second end of the transmission line. The backfire antenna element extends between the ground plane and the base structure. The backfire antenna element is coupled to the second end of a TEM line.SELECTED DRAWING: Figure 1

To ensure isolation between multiple antenna elements disposed within a narrow space while also reducing the size of an on-board antenna device, this on-board antenna device (100) comprises: an antenna case (101); a base (102) that forms an accommodation space together with the antenna case (101); and a first antenna element (122) and a second antenna element (123) that are accommodated in the accommodation space. The first antenna element (122) and the second antenna element (123) at least transmit or receive radio waves of different frequency bands. The first antenna element (122) has, in at least a portion thereof, a meandering shape in a first direction that intersects a polarized wave of a radio wave transmitted or received by the second antenna element (123).

The invention discloses a dual-frequency four-arm helical antenna with ultra-low profile and wide-angle radiation characteristics. The dual-frequency four-arm helical antenna comprises a first circular ring dielectric substrate, sickle-shaped radiation arms, an FPC dielectric substrate, helical radiation arms, a circular ring-shaped support, a covering film, a floor and a coaxial feed. The antenna can realize wide axial ratio beam width, wide half-power beam width and relatively high gain in a working frequency band range of satellite navigation, has an ultra-low profile, can be used for realizing an unmanned aerial vehicle-mounted satellite navigation terminal with low wind resistance and high sensitivity, and effectively improves the positioning precision and speed of a high-speed motion carrier.

Network elements and methods of use are described herein, including a network element comprising a passive waveguide, one or more modulator, and one or more RF antenna. The one or more modulator is configured to generate first and second channel signals. The first channel signal has first data encoded in a first modulation format. The second channel signal has second data encoded in a second modulation format. The first and second channel signals have first and second carrier frequencies, respectively. The first and second carrier frequencies are in a range between 300 Gigahertz (GHz) and 10 Terahertz (THz). The one or more RF antenna is configured to receive the first and second channel signals and transmit the first and second channel signals into the passive waveguide with first and second polarizations, respectively. The first polarization is different from the second polarization.

An antenna apparatus and method of operating the antenna apparatus, can include a helical antenna comprising a helical portion raised from a printed circuit board to optimize gain and bandwidth, wherein the helical portion incorporates a limited number of turns, which facilitate control over the dimensions of the helical antenna. An antenna support can be provided, which can maintain dimensional consistency with respect to the helical antenna. The antenna support can facilitate achievement of target performance parameters for the antenna apparatus. In addition, the elevated helical portion can be configured to enhance the gain and the bandwidth without compromising the overall dimensions of the helical antenna. In some embodiments, the helical antenna may be formed from plastic.

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.

An electronic device includes an RF device, and an antenna. The antenna includes an elongate support, and helically wound conductive strips carried by the elongate support and with adjacent conductive strips having an angular spacing. The electronic device includes a feed structure coupling the RF device to the helically wound conductive strips.

Transmitters, receivers, transceivers, transport networks, and methods of use are described herein, including a transmitter comprising a client-side input, transmitter circuitry, and antennas. The client-side input receives baseband signals having client data encoded therein. The transmitter circuitry receives the baseband signals from the client-side input and generates antenna feed signals based on the baseband signals. The antennas receive the antenna feed signals from the transmitter circuitry, generate radiated signals based on the antenna feed signals, and couple the radiated signals into hollow waveguides. The radiated signals are radiated electromagnetic waves configured for coherent detection and having one or more frequencies in a range between 300 Gigahertz (GHz) and 10 Terahertz (THz). The antennas include one of a helical antenna, a waveguide probe antenna, a tapered antenna, a patch antenna, and a slot antenna.

The radio frequency device is characterized in that the radio frequency device is provided with a spiral antenna and a radio frequency module, and the first end of the spiral antenna is electrically connected with a radio frequency interface of the radio frequency module; the spiral antenna structurally comprises a core material and a spiral conductor wound and fixed on the periphery of the core material. The spiral conductor is made of a single or a plurality of bundled metallized fibers, metal wires or carbon fiber wires, and the radius of each metallized fiber, metal wire or carbon fiber wire is 1t; the frequency of the radio-frequency signal is five times of the skin depth when the radio-frequency signal is transmitted on the metallized fiber, the metal wire or the carbon fiber wire; the helical antenna has an extremely high quality factor, so that a communication distance which is several times of that of a traditional helical antenna is obtained under the same power.

A wireless power transmission system includes a structure surrounded as a whole by an electromagnetic wave-shielding member having an appropriate conductivity, at least one power transmission unit, and at least one power reception unit. A power reception unit includes a power receiver including a dielectric substrate, a rectifier circuit, and a power reception antenna. The power reception antenna includes power reception antenna lines in a same plane on the dielectric substrate. One ends of the power reception antenna lines are connected to the rectifier circuit, and other ends different from the one ends connected to the rectifier circuit are open ends. A planar shape of the dielectric substrate is a 2N-sided polygon with line symmetry (where N is an integer of two or more), and the power reception antenna lines are along N sides that are adjacent to and different from each other of the dielectric substrate.

The present application discloses a smart glasses, belonging to the technical field of smart terminals. The smart glasses include: a frame and temple arms, the frame is connected to the temple arms; an antenna unit is arranged on the temple arms, the antenna unit includes a first antenna radiator and a first antenna feeding structure, the first antenna radiator is a spiral structure, one end of the first antenna radiator is connected to the first antenna feeding structure, and the other end of the first antenna radiator is connected to the frame; wherein, the smart glasses can be switched between a wearing state and a folded state, and when the smart glasses are in different states, the first antenna radiator undergoes elastic deformation, and the radiation direction of the first antenna radiator relative to the frame remains unchanged.

The present invention relates to a radio frequency identification tag to be embedded into a tire, and according to one embodiment of the present invention, the radio frequency identification tag to be embedded into a tire is technically characterized by comprising: a PCB substrate having a prescribed length; an antenna having a predetermined length, formed in a spiral shape, and fitted along the longitudinal direction of the PCB substrate; and a radio frequency identification (RFID) chip which is provided in the central portion of the PCB substrate and which wirelessly receives data from the antenna, the PCB substrate and the antenna being spaced apart from each other by a predetermined distance as the front / rear width of the interior of the antenna formed by the spiral shape is larger than the front / rear width of the PCB substrate, and the PCB substrate and the antenna forming a space portion, the space portion being spaced apart from each other by a predetermined distance. And a part of the antenna is arranged in the protective cover, so that the interval between the radio frequency identification chip and the antenna is kept constant.

To improve radiation directivity of an antenna positioned between two antennas.SOLUTION: An antenna device (10) includes a substrate (100) having a first surface (102), a first antenna (200) provided on the substrate (100), a second antenna (300) provided on the substrate (100), and a third antenna (400) provided on the first surface (102) of the substrate (100), wherein a center point (CP) of the third antenna (400) is positioned on a same side as a side where an end (EP2) which is the farthest from the first antenna (200) of the second antenna (300), is positioned, with respect to a central line (CL) passing through a center of a line (L) connecting an end (EP1) which is the farthest from the second antenna (300) of the first antenna (200), and an end (EP2) which is the farthest from the first antenna (200) of the second antenna (300), or a central line (CL) of the first surface (102) of the substrate (100).SELECTED DRAWING: Figure 3

The present invention relates to a wireless identification tag for attachment to a tire, and the wireless identification tag for attachment to a tire according to one embodiment of the present invention comprises: a printed circuit board substrate including a main body part and antenna setting parts formed by extending along both sides of the main body part; the radio frequency identification chip is arranged on the body part; and an antenna which has a predetermined length, is formed in a spiral shape, and is embedded and coupled in the longitudinal direction of the antenna installation part, and the front-rear width of the interior of the spiral shape of the antenna is larger than the front-rear width of the printed circuit board substrate. The antenna setting part is separated from the antenna at a predetermined interval and forms a space part.

To provide a system and method that allows more antennas to be present on a spacecraft while minimizing the platform volume used for antennas. [Solution] The multiband concentric helical antenna system 100 includes bases 115, 125, a first helical antenna 110, and at least a second helical antenna 120, wherein the second helical antenna is located within the first helical antenna, the first helical antenna has a first frequency band, and the second helical antenna has a second frequency band that is not the same as the first frequency band, and the first and second helical antennas are connected to the base and located within an opening in the base. The multiband helical antenna system may further include N additional antennas, which can be used as a single radiating element or in an array of radiating elements.

A broadband spiral antenna system for a vehicle is provided. A planar spiral antenna is fabricated on a substrate. The planar spiral antenna includes an antenna feed. A first dielectric plate is disposed adjacent a first side of the substrate. A dielectric puck has a first puck side disposed adjacent the antenna feed on a second side of the substrate opposite the first side of the substrate. A radio frequency (RF) connector is disposed adjacent a second puck side of the dielectric puck. The second puck side is opposite the first puck side of the dielectric puck. One or more conductive vias extend from the antenna feed through the dielectric puck to the RF connector and electrically connect the antenna feed to the RF connector.

The present disclosure relates to an attachable wireless identification tag for a tire, the attachable wireless identification tag for a tire according to the embodiment of the present disclosure is technically characterized by including a PCB including a main body part, and antenna installation parts extending from two opposite sides of the main body part, an RFID chip installed on the main body part, and an antenna having a predetermined length, formed in a helical shape, and fitted and coupled in a longitudinal direction of the installation part, in which antenna a forward / rearward width of an interior defined by the helical shape of the antenna is larger than a forward / rearward width of the PCB, such that the antenna installation part and the antenna are spaced apart from each other at a predetermined interval to form a space portion.

The present invention relates to a wireless RFID tag to be embedded in a tire. The wireless RFID tag to be embedded in a tire, according to one embodiment of the present invention, comprises: a PCB having a predetermined length; an antenna which has a predetermined length and which is formed in a helical shape so as to be fitted and coupled along the longitudinal direction of the PCB; and an RFID chip provided in the central portion of the PCB so as to wirelessly receive data from the antenna, and is technically characterized in that the inner front-rear width constituting the helical shape of the antenna is larger than the front-rear width of the PCB, and thus the PCB and the antenna are spaced a predetermined distance apart from each other, thereby forming a space part, and a portion of the antenna is inserted into a protective cap so as to maintain a constant distance between the RFID chip and the antenna.