Abstract: A Vivaldi antenna having an upper conductor and a lower conductor. A signal connector feed is attached to a rear end of the conductors while each conductor includes a curved flare section extending forwardly for the reception or transmission of the signal. Each conductor includes elliptical loading section or sections disposed around its flare section to enhance performance of the antenna by improving the front to back ratio as well as other factors for the antenna.

Abstract: An NFC antenna includes a first metal back cover and an antenna coil located on the inner side of the first metal back cover, a through-hole and a first slit are formed in the first metal back cover, the first slit is connected with one edge of the through-hole and one edge of the first metal back cover, the antenna coil surrounds the through-hole and the first slit, and one part of the antenna coil does not coincide with the first metal back cover and is not intersected with the first slit. Through the above manner, the effect of optimally changing the flow direction distribution and intensity of eddy currents can be achieved, the eddy current loops are used to enhance the performance of the antenna, and the shielding effect of the metal back is eliminated.

Abstract: An antenna device of a portable device such as a smartphone includes a connecting member having a conductive case and mounted on a circuit board of the portable device in a manner such that the case is connected to a ground surface of the circuit board; a radiator spaced from the circuit board; and at least one connecting pin provided between the case and the radiator. The radiator is connected to the ground surface through the connecting pin and the case. The antenna device advantageously may be easily installed in the internal space of a miniaturized, lightened and/or slimmed portable device by practically using a conductive component, e.g., the case, of the connecting member.

Abstract: An antenna enables compact and robust multiband operation of portable radios. According to some embodiments, the antenna includes: a first rolled conductive strip having a first section with overlap between successive turns of the first conductive strip and a second section with no overlap between successive turns of the first conductive strip, the first section having an insulating layer between the overlapping successive turns of the first conductive strip; a second rolled conductive strip; and a flexible sheet to which both the first conductive strip and the second conductive strip are bonded.

Abstract: Antenna apparatus and methods of use and tuning. In one exemplary embodiment, the solution of the present disclosure is particularly adapted for small form-factor, metal-encased applications that utilize satellite wireless links (e.g., GPS), and uses an electromagnetic (e.g., capacitive) feeding method that includes one or more separate feed elements that are not galvanically connected to a radiating element of the antenna. In addition, certain implementations of the antenna apparatus offer the capability to carry more than one operating band for the antenna.

Abstract: An antenna including an antenna structure disposed on a substrate is provided. The antenna structure includes a first radiation part, a second radiation part, a metal coupling part, a third radiation part and a feeding point. The first radiation part has a first bend, a second bend and an opening end. The first radiation part extends from a grounding point of a grounding plane and the opening end thereof is nearing the grounding plane. The second radiation part extends from a section between the first bend of the first radiation part and the grounding point. The metal coupling part is nearing the first radiation part and the second radiation part. The third radiation part is disposed between the second radiation part and the grounding plane, and extends from the metal coupling part. The feeding point is coupled to where the third radiation part and the metal coupling part connected.

Abstract: Capacitively coupled antenna apparatus and methods of operating and adaptively tuning the same. In one embodiment, the insertion loss component in “beside the hand/head” use scenarios is significantly reduced or eliminated such that the antenna experiences only absorptive losses (which generally cannot be avoided), and a very small insertion loss by the host device radio frequency tuner. The exemplary antenna apparatus may be configured for multi-band operation, and also has a very small form factor (e.g., 3 mm ground clearance only at the bottom of the PCB, 4 mm height in one implementation), thereby allowing for use in spatially compact host devices such as slim-line smartphones, tablets, and the like. The adaptive antenna arrangement (using capacitive feed) can be tuned such that the tuner is used in free space, and the user's hand/head tunes the antenna to the band of interest while in use.

Abstract: A dielectric resonator antenna array system includes a first array of a plurality of dielectric resonator antennas arranged in a first orientation and that forms a first beam, and a second array of a plurality of dielectric resonator antennas arranged in a second orientation, that is different from the first orientation, and that forms a second beam. Further, a dielectric resonator antenna array system includes a first array of a first type of plurality of dielectric resonator antennas arranged in a predetermined orientation and that forms a first beam, and a second array of a second type of plurality of dielectric resonator antennas arranged in the predetermined orientation and that forms a second beam.

Abstract: Techniques for providing multiple antennas in a wireless device using a compact configuration to achieve good isolation and broad bandwidth. In an aspect, first and second monopole elements that may be separately driven are provided on opposite sides of a grounding strip conductively coupled to a common grounding structure. By capacitively coupling the first and second monopole elements to the common grounding structure, the effective resonator size of each monopole antenna is increased, thus achieving better performance for the antenna structure. Illustrative patterns for the common grounding structure and other antenna elements are further disclosed.

Abstract: Described embodiments provide an antenna for transmitting and receiving radio frequency (RF) signals. The antenna includes an antenna element and an antenna feed network coupled to the antenna element. The antenna feed network is disposed on a first side of the antenna element. A cavity structure is disposed around the antenna feed network. The cavity structure includes conductive walls defining an antenna element cavity. The walls have a height defining a depth of the cavity. An intracavity wall is disposed within the cavity between feed lines of the antenna feed network. The intra-cavity wall is provided having dimensions selected to reduce cross-coupling within the cavity.

Abstract: According to various embodiments of the present disclosure, an antenna device may include: a base substrate; a mesh grid formed by transparent electrodes on at least one surface of the base substrate; and a power feeding port connected to the mesh grid to provide a power feeding signal. At least a part of the mesh grid may form a radiation element with at least one of the power feeding signal indicative of direct feeding, and the power feeding signal indicative of coupled feeding indirectly. Since the radiation element may be configured by forming the mesh grid using a transparent conductive material, the antenna device may be easily concealed. Even if the antenna device is attached to, for example, a window glass of a vehicle or a window of a building, the antenna device may contribute to the removal of a shadow region while sufficiently securing the visibility of the glass.

Abstract: An antenna device which is built into an electronic appliance having a metal cover provided with a radio wave passer is provided. The electronic apparatus includes an antenna portion arranged adjacent to the radio wave passer so as to be capable of transmitting and receiving radio waves through the radio wave passer. A reflecting portion which reflects the radio waves radiated from the antenna portion is located on an opposite side of the antenna portion, so that the antenna portion is between the reflecting portion and the radio wave passer.

Abstract: An antenna includes a high band configuration, a low band configuration, and two signal integration modules. The high band configuration includes two three-dimensional feed-ins and a resonator. The three-dimensional feed-ins respectively receive first band signals perpendicular to each other. The resonator is disposed above the three-dimensional feed-ins and is coupled with the three-dimensional feed-ins. The orthogonal projection of the resonator at least partially overlaps with the three-dimensional feed-ins. The low band configuration includes two dipole feed-ins. The dipole feed-ins is disposed above the high band configuration and respectively receives second band signals perpendicular to each other. The signal integration modules are electrically connected to the high band configuration and the low band configuration and integrate the first band signals and the second band signals into broadband signals.

Abstract: A collinear dipole antenna includes first and second radiators. The first radiator includes a first arm and at least one second arm including first and second branches, and the second radiator includes a third arm and at least one fourth arm including third and fourth branches. The first and third branches have negative current phases and meandering shapes, and the first and third arms and the second and fourth branches have positive current phases. Widths of the first and third arms gradually increase to a maximum width and gradually decrease after the maximum width is reached. Widths of the second and fourth branches gradually increase to the maximum width and gradually decrease after the maximum width is reached.

Abstract: Simple, low-cost and modular antenna apparatus and methods associated therewith. In one embodiment, a modular antenna element that can be used either alone or as a basic “building block” for larger arrays and sectorial antennas (i.e., by joining needed number of elements together) is provided. The same parts can be reused for various complete product designs, thereby advantageously reducing the need for customized parts (and the attendant disabilities associated therewith). Moreover, multiple antenna elements can be readily joined together via a common feed network (in one implementation, via the back portion of each element). The antenna gain and beam width are also adjustable through configuration of the array (and the construction of the antenna elements themselves).

Abstract: A packaged electronic device includes an integrated antenna as part of a conductive leadframe. The conductive leadframe includes a die paddle have an elongated conductive beam structure configured as a transmission line, and a ground plane structure disposed surrounding the die paddle. The ground plane includes a gap where the transmission line extends to an edge of the packaged electronic device. In one embodiment, selected leads within the leadframe are configured with conductive connective structures as ground pins, source pins, and/or wave guides. In an alternate embodiment, a portion of the integrated antenna is embedded and partially exposed within the body of the packaged electronic device.

Abstract: A dielectric artificial impedance surface antenna (DAISA) including a first dielectric with a thickness, the first dielectric thickness varying to provide a modulated impedance to a signal traversing the first dielectric, the first dielectric having a first surface and a second surface opposite the first surface, and a transparent conductive material coating the second surface.

Abstract: A radio-frequency device includes a grounding element, a first antenna including a first parasitic element, a second antenna, a third antenna and a second parasitic element, wherein the grounding element is shared by the first, second and third antennas, the second parasitic element is electrically connected to the grounding element for guiding a first reflected signal from the first antenna to the second parasitic element, and the first parasitic element is electrically connected to the grounding element for guiding a second and third reflected signals from the second and third antennas to the first parasitic element, so as to enhance isolations of the first, second and third antennas.

Abstract: A lightning protection device for an antenna receiver includes a shield for a coaxial cable connected to the antenna, and a high-pass filter mounted in series relative to the shield and capable of limiting the low-frequency power flowing in the coaxial cable, including a capacitor and an inductor lower than 1 ohm at the lowest frequency used by the receiver, the capacitor including at least one layer of a conductive material embedded in a printed circuit. The capacitor may be made of a printed circuit including at least two floor plans, each of which is connected to the ground of a connector of the coaxial cable. The printed circuit may include at least one layer of a highly pervious material sandwiched between two layers of a conductive material.

Abstract: Package structures are provided having antenna-in-packages that are integrated with semiconductor RFIC (radio frequency integrated circuit) chips to form compact integrated radio/wireless communications systems that operate in the millimeter wave (mmWave) frequency range with radiation in broadside and end-fire directions.