41results about "Electrically long antennas" patented technology

Provided herein are various enhancements for radio frequency antennas and antenna assemblies. In one example, an antenna assembly includes a cavity structure comprising an interior volume surrounded by a wall and having an opening at a first longitudinal end and a cap at a second longitudinal end. A conductive material disposed on a portion of the wall of the cavity structure and the cap such that a dielectric gap is established between the conductive material and a planar antenna when the planar antenna is coupled onto the first longitudinal end of the cavity structure.

A microstrip patch log periodic antenna (MSPLPA) may include a ground plane, a dielectric material, a printed circuit board comprising a microstrip patches. Each of the microstrip patches may be configured to transmit and / or receive signals. The dielectric material may be disposed between the ground plane and the printed circuit board. Each of the microstrip patches may be frequency scaled.

This application provides a multi-band shared-aperture antenna. The multi-band shared-aperture antenna includes a first antenna array, a second antenna array, and a reflection panel, where the first antenna array includes four first dielectric plates perpendicular, two adjacent first dielectric plates are perpendicular to each other, the first antenna array includes four hollowed butterfly dipole units, the dipole unit includes two radiation arms, the two radiation arms are respectively printed on two adjacent first dielectric plates, the radiation arm includes a first part and a second part, a first feeding stub is disposed on the first dielectric plate, the second part has a specified width in a direction perpendicular to the reflection panel, the second antenna array includes a plurality of second dielectric plates, four ring-shaped coils are disposed on any one of the second dielectric plates, and the ring-shaped coil is connected to a second feeding stub.

An antenna device including a transparent antenna element that can be provided at a position visible from outside of a transparent cover of an electronic apparatus is provided.An antenna device includes a flexible substrate that is transparent and that is to be provided on an inner surface side opposite to an outer surface of a transparent cover, made of glass or resin, of an electronic apparatus, and an antenna element that is transparent and that is to be provided at a position, of the flexible substrate, that is visible from outside of the transparent cover, the antenna element having a directivity oriented toward an outside of the electronic apparatus.

The invention relates to an antenna element (1) for an antenna array with a dielectric first antenna bar (3) and a dielectric second antenna bar (4), wherein a converter section (5) is formed in the antenna element (1) in which the first antenna bar (3) tapers in cross-section along a longitudinal direction and the second antenna bar (4) is formed at a distance from the first antenna bar (3) forming a gap (6) and increases in cross-section, and the longitudinally extending gap (6) has a gap medium of a lower permittivity than the permittivity of the first antenna bar (3) and the second antenna bar (4), so that a mode of a signal coupled into the antenna element (1) is guided in the gap (6). In this way, a low-loss, broadband antenna element is provided, in which the propagation time of a signal can be easily adjusted.The antenna element according to the invention is also compact and cost-effective to manufacture and easy to integrate.

This invention relates to a cavity filter for antennas. Specifically, the invention includes: a filter body having multiple cavities, one side of which is open and divided by a partition; resonant rods respectively disposed in the multiple cavities; a resonant rod boss into which a portion of the resonant rod is inserted, such that the resonant rod is disposed in the cavity; and a tolerance management stop disposed between the inner circumferential surface of the resonant rod boss and the outer circumferential surface of the resonant rod, which performs a movement and stop function along the insertion direction of the resonant rod when designing the resonance of the cavity. This provides the advantage of improving the overall production yield of the product.

An aerial vehicle includes a body and an antenna assembly mounted to the body. The antenna assembly includes a fairing component comprising a hollow body, a conductive coating formed on at least an inner surface of the fairing component, a plurality of antenna elements formed in the conductive coating, each antenna element including a first slot line defining a first transmission line and a second slot line defining a second transmission line, an insulator sleeve disposed within the fairing component, wherein an outer surface of the insulator sleeve at least substantially matches an inner surface of the fairing component, and a plurality of cable assemblies operably coupled to the plurality of antenna elements, wherein each cable assembly is coupled to a respective antenna element.

An antenna and a communication device. The antenna provided includes a dielectric substrate, a folded dipole, and N symmetrical dipoles. A combined line is disposed on the dielectric substrate, and the combined line has a first end and a second end. The folded dipole is located at the first end of the combined line and is connected to the combined line. The N symmetrical dipoles are disposed on the dielectric substrate, and the N symmetrical dipoles are connected to the combined line. The N symmetrical dipoles are sequentially arranged from the first end to the second end of the combined line.

A method of tuning an electrically small antenna comprising a radiating element and a support structure comprises applying a force to the support structure to change a shape or a dimension of the radiating element to increase or decrease a frequency at which the electrically small antenna resonates.

A conformal antenna system for Synthetic Aperture Radar (SAR) applications, the system comprising a tubular POD, a curved vertically polarized radio frequency (RF) antenna conformally integrated into a curved surface of the tubular POD at a first location, and a curved horizontally polarized RF antenna conformally integrated into the curved surface of the tubular POD at a second location, wherein the first location and the second location are arranged such that the curved vertically polarized RF antenna and the curved horizontally polarized RF antenna share a common RF emission axis.

The invention relates to a dielectric rod antenna, wherein the dielectric rod antenna comprises: a dielectric rod and an excitation element, in particular a waveguide, which receives one end of the dielectric rod in order to excite the dielectric rod, wherein the dielectric rod is designed for a desired frequency at which signals to be transmitted are emitted by the dielectric rod antenna; characterized in that the dielectric rod comprises a bandstop material which suppresses one or more harmonic frequencies of the desired frequency.

Radar transceiver device (1) for radar signals with a frequency-selective radar transmitter unit (2) and / or with a frequency-selective radar receiver unit (3), wherein the frequency-selective radar transmitter unit (2) of the radar transceiver device (1) comprises a digital-to-analog converter (2A) designed to convert a broadband digital signal provided for all transmit channels into an analog transmit signal, a signal modulator (2B) that modulates a signal carrier with the analog transmit signal output by the digital-to-analog converter (2A) to generate a modulated transmit signal, and has at least one frequency-selective component (2C) designed to divide the transmit signal modulated by the signal modulator (2B) into several transmit (TX) channels for transmission as a radar signal, and wherein the frequency-selective radar receiver unit (3) of the Radar transceiver device (1) at least one frequency-selective component (3C),which is designed to combine a received radar signal comprising several receive (RX) channels, a signal demodulator (3B) which demodulates the radar signal combined by the frequency-selective component by means of a signal carrier to generate a demodulated receive signal, and includes at least one analog-to-digital converter (3A) which is designed to sample the received signal demodulated by the signal demodulator (3B) to generate a digital receive signal.

Radiofrequency antenna (1) substantially cylindrical along an axis (A), comprising a stacked configuration having a reduced extension (e) along the axis (A) of the cylinder and a deployed configuration having an increased extension (E) along the axis (A) of the cylinder, capable of deploying spontaneously to pass from the stacked configuration to the deployed configuration, comprising at least two substantially toroidal rings (2), the large diameter of the torus defining the diameter of the cylinder, superimposed, the axes of said at least two tori merging with each other and with the axis (A) of the cylinder, and at least one elastically flexible blade (3) fixed substantially to the outer periphery of said at least two rings (2), said at least one blade (3) being shaped so as, in the deployed configuration, to extend along the cylinder along an axis parallel to or merging with the axis (A) of the cylinder and, in the stacked configuration, to fold back on itself under stress,so as to create a recall effort, allowing spontaneous deployment. Application to the spatial domain. Abstract figure: Figure 1,

To provide a thin cavity-equipped antenna capable of achieving high gain in a unidirectional manner over a wide frequency band by adding a cavity to an antenna radiating element.SOLUTION: A thin cavity-equipped antenna 11 of the present disclosure has a printed circuit board 111 having a first plane Ps1 perpendicular to a first direction X1, a radiating element 112 provided on the first plane Ps1 of the printed circuit board 111, comprising a conductor and radiating radio waves in the first direction X1, a cavity 113 provided on the opposite side of the radiating element 112 from the first direction X1, comprising a conductor and having a concave shape opposite to the first direction X1, and a power feed circuit 114 that feeds power to the radiating element 112, and the first length L1 in the first direction X1 of the cavity 113 is less than 1 / 10 of the second length L2 in the second direction X2 orthogonal to the first direction X1 of the cavity 113.SELECTED DRAWING: Figure 1A

The invention relates to a vehicle (2) which is equipped with a mobile assembly (1) comprising a pneumatic tyre (12) rotated about an axis (102), the mobile assembly (1) being equipped with a radiofrequency transponder (100) and a reading system (3), comprising: - a generator which is coupled to an electrical signal demodulator (31); - a cable (32) which is galvanically connected to the generator (31), is attached to the transport means (2) and comprises a radiating portion (342), characterised in that the projection R on a cylinder (104), the cylinder having an axis of revolution (102), circumscribed to the pneumatic tyre (12) of the radiating portion is less than 1 metre, in that the radiating part (342) comprises a meander (500) defined by a width "P" and a length "L", and in that the curvilinear length of the meander (500) is between 0.7 and 1.3 times the wavelength L0 associated with the communication frequency of the reading system (3).

To provide a thin cavity-equipped antenna capable of achieving high gain in a unidirectional manner over a wide frequency band by adding a cavity to an antenna radiating element.SOLUTION: A thin cavity-equipped antenna 11 of the present disclosure has a printed circuit board 111 having a first plane Ps1 perpendicular to a first direction X1, a radiating element 112 provided on the first plane Ps1 of the printed circuit board 111, comprising a conductor and radiating radio waves in the first direction X1, a cavity 113 provided on the opposite side of the radiating element 112 from the first direction X1, comprising a conductor and having a concave shape opposite to the first direction X1, and a power feed circuit 114 that feeds power to the radiating element 112, and the first length L1 in the first direction X1 of the cavity 113 is less than 1 / 10 of the second length L2 in the second direction X2 orthogonal to the first direction X1 of the cavity 113.SELECTED DRAWING: Figure 1A

An electronic device is provided. The electronic device may comprise a housing comprising a front plate facing a first direction, a back plate facing a second direction opposite to the first direction, and a side surface which surrounds the front plate and the back plate, wherein the front plate includes a screen area and a bezel area; a display exposed through the screen area of the front plate, a first circuit board disposed between the display and the back plate and including a first surface facing the display and a second surface facing the back plate, a first antenna array overlaid on the bezel area in the first surface, a second antenna array disposed on the second surface; and a wireless communication circuit disposed on the first circuit board and electrically connected with the first antenna array and the second antenna array, wherein the wireless communication circuit is configured to: form a beam which has directionality in the first direction using the first antenna array and form a beam which has directionality in the second direction using the second antenna array.

This application provides a multi-band shared-aperture antenna and a communication device. The multi-band shared-aperture antenna of this application includes a first antenna array, a second antenna array, and a reflection panel, where a frequency band of the first antenna array is lower than a frequency band of the second antenna array, the first antenna array includes four first dielectric plates perpendicular to the reflection panel, two adjacent first dielectric plates are perpendicular to each other, the first antenna array includes four hollowed butterfly dipole units, the dipole unit includes two radiation arms, the two radiation arms are respectively printed on two adjacent first dielectric plates, the radiation arm includes a first part and a second part, a first feeding stub is disposed on the first dielectric plate, the second part has a specified width in a direction perpendicular to the reflection panel, the second antenna array includes a plurality of second dielectric plates, four ring-shaped coils are disposed on any one of the second dielectric plates, and the ring-shaped coil is connected to a second feeding stub. An effect that a high-frequency antenna array and a low-frequency antenna array coexist is implemented without a mutual influence of standing waves.

An RFID antenna having two flexible elongated conductive transmission lines with coplanar RFID energy radiation perturbations distributed along the transmission lines, the transmission lines and perturbations being folded between ends of the transmission lines so that the transmission lines of one fold overlie and are adjacent the transmission lines of the other fold and an electrically insulating layer disposed between lengths of the transmission lines on either side of the fold.

A cable antenna according to the present invention is a cable antenna an end part of which is connected to an oscillator that supplies a high-frequency current, including: an inner conductor extending in a cable-like configuration; an insulating layer covering the inner conductor; and an outer conductor covering the insulating layer, wherein only one exposed part is formed in a middle part of the cable antenna in a longitudinal direction, the exposed part being formed by removing at least the outer conductor, a distance L between a tip end of the cable antenna and an end of the exposed part on a side closer to the tip end is an odd multiple of a quarter of a wavelength λ of the high-frequency current, the multiplier being three or greater, and a length G of the exposed part in the longitudinal direction satisfies the following formula (1). λ / 20≤G<λ / 4 λ: wavelength (mm) of the high-frequency current.

Methods and systems are disclosed for an antenna system capable of optimal broadside radiation. In certain embodiments, a system may include a flexible and thin polyethylene terephthalate (PET) substrate stack having a predetermined length. The system may include a printed circuit board (PCB) fabrication of one or more Leaky-Wave Antenna (LWA) structures on the PET substrate stack. The one or more LWA structures have a bent-stub folded LWA configuration have longitudinal asymmetry and transverse asymmetry for a broadside frequency. The bent-stub folded LWA configuration comprises a plurality of conductively unit cells having a unit cell period. Each unit cell of the plurality of conductively unit cells has a folded main feed-line and a bent stub pair with two angularly bent radiating stubs. Embodiments are structured to increase radiation per-unit length and suppress open stopband (OSB).

A radar transceiver for radar signals, having a frequency-selective radar transmitting unit and / or a frequency-selective radar receiving unit, the frequency-selective radar transmitting unit comprising: a digital-to-analog converter for converting broadband digital signals provided for all transmitting channels into analog transmitting signals, a signal modulator that modulates a signal carrier by means of an analog transmission signal output by the digital-to-analog converter to generate a modulated transmission signal, at least one frequency selective component that distributes the transmission signal modulated by the signal modulator to a plurality of transmission channels as radar signal radiation; the frequency-selective radar receiving unit comprises at least one frequency-selective component for combining a received radar signal comprising a plurality of receiving channels, a signal demodulator for demodulating the radar signal combined by the frequency-selective component by means of a signal carrier to produce a demodulated received signal, and at least one analog-to-digital converter that samples the received signal demodulated by the signal demodulator to generate a digital received signal.

An electronic device may comprise: a display; an antenna module including at least one antenna; a conductive connection member comprising a conductive material; and at least one antenna structure. The display may be arranged in the inner space of a housing to be visible from the outside and may include a curved side surface portion. The antenna module may be arranged in the inner space of the housing. The conductive connection member may be electrically connected to the antenna module. The at least one antenna structure may be arranged on a side surface portion of the display. The conductive connection member may electrically connect the antenna structure to the antenna module. The antenna structure may include at least one first-type antenna and at least one second-type antenna configured to radiate radio waves in different directions.

The present invention provides an antenna unit that can suitably widen the beam width by 3 dB. [Solution] The antenna unit comprises a single feeding antenna provided in a dielectric and a pair of parasitic antennas provided in the dielectric on one side and the other side with respect to the single feeding antenna. The feeding antenna has a feeding body that includes a feeding line and a radiating element fed from the feeding line. The pair of parasitic antennas consist of a first parasitic antenna provided on one side and a second parasitic antenna provided on the other side with respect to the single feeding antenna, and each parasitic antenna includes a parasitic body that is substantially the same shape as the feeding body and a phase adjustment line extending from its end. The single feeding antenna is a horizontally polarized antenna, with a free-space wavelength λ, a dielectric wavelength λg, and the sum of the two λe, and the sum of the first pitch and first length, and the sum of the second pitch and second length are between 0.75λe+[(λ / 2)×n] and 1.05λe+[(λ / 2)×n] (where n is an integer of 0 or more).

An antenna includes a first patch and a second patch, where one of the first patch and the second patch is a choke patch, and the other one of the first patch and the second patch is a radiation patch. The first patch includes a first body, a first periodic slow wave line structure, and a first pad, the first body is provided with a first side and is provided with a first accommodating notch on the first side, and the first periodic slow wave line structure is located within the first accommodating notch and connected with an edge of the first accommodating notch. The second patch includes a second body and a second pad. In addition, embodiments of the disclosed technology further provide a communication device that includes the antenna.