Abstract: A dipole antenna provides electrical dipole conductors folded to form distributed inductive and/or capacitive reactive loads between selected portions of one or more coupled line segments of the individual dipole conductors or between one dipole conductor to another, wherein the electrical dipole conductors form a selective frequency filter. An antenna provides a substrate, electrical conductors formed on and/or in the substrate, and one or more ceramic dielectric elements having relative permittivity ?R?10 and/or relative permeability ?R?10 formed on and/or in the substrate between selected portions of the electrical conductors for determining a distributed reactance within the selected portions. A folded dipole antenna provides conducting dipole arms, a distributed network filter having distributed reactance within and between the conducting dipole arms, and a tunable reactance connected to an input of the distributed network filter for adjusting a resonant frequency of the antenna.

Abstract: A multi-band antenna system for MIMO applications is adapted to provide high isolation between antennas across a wide range of frequencies. Multiple Isolated Magnetic Dipole (IMD) antennas are co-located and connected with a feed network that can include switches that adjust phase length for transmission lines connecting the antennas. Filtering is integrated into the feed network to improve rejection of unwanted frequencies. Filtering can also be implemented on the antenna structure. Either one or multi-port antennas can be used.

Abstract: An antenna and multi-antenna system are provided. Each antenna of the system is a mirror image and comprises first and second conductive elements each having a first end and a second end portion, the second end portions being capacitively coupled to each other. Each antenna can be operated as a lower-frequency folded dipole having a series capacitive gap which facilitates electrical lengthening of the antenna, or as a higher-frequency monopole antenna having a parasitic element which facilitates improved bandwidth. The antennas' feedpoints may be placed at opposite corners of a ground plane, and separated by a distance which is less than one quarter of an operating wavelength of the dipole but greater than one quarter of an operating wavelength of the monopole. Locating the feedpoints at the ground plane corners facilitates orthogonal polarization of the two antennas at least in dipole mode. The antennas thus provided exhibit good isolation.

Abstract: An antenna is realized by a simple mechanism without use of a dedicated antenna element. An antenna includes a first conductor 2b (2d) that has a first line length from a start point 4 to a folded point 3; and a second conductor 2b (2d) that has a second line length in a direction from the folded point 3 to the start point 4 and is electrically connected to the first conductor at the folded point 3. A first received signal with a first frequency is received with a first antenna length including both the first line length and the second line length. A second received signal with a second frequency is received with a second antenna length including only one of the first line length and the second line length.

Abstract: A compact four-way transducer (FWT) is provided for a microwave communications system. The compact FWT is a compact assembly that is configured to process microwave signals in dual-polarization antenna feeds and to provide single polarized signals for four communications channels. The compact FWT includes four terminals facing different directions at one end for receiving/sending single polarized signals, and a terminal at an opposite end for receiving/sending dual polarized signals.

Abstract: A wireless communication device includes a flexible base material film, a flexible antenna conductor that is provided in substantially the entire region of one main surface of the flexible base material film and that includes a first radiation element and a second radiation element facing each other through a slit, an inductor substrate that is connected to the first radiation element and the second radiation element so as to extend across the slit, the inductor substrate including an inductance element, and a wireless IC element that is connected in parallel to the inductance element and that is mounted in the inductor substrate. The wireless IC element is connected to the first radiation element and the second radiation element so as to extend across the slit.

Abstract: A mobile wireless communications device may include a housing carrying a circuit board and wireless communications circuitry. An antenna assembly is carried by the housing and coupled to the wireless communications circuitry. The antenna assembly may include an electrically conductive base having a rectangular shape with opposing first and second ends and opposing first and second sides extending between the first and second ends. The electrically conductive base may have an elongate slot therein extending within a medial portion thereof and contained within the opposing first and second ends and the opposing first and second sides. The antenna assembly also may include an electrically conductive feed arm extending outwardly from the first side of the electrically conductive base adjacent the first end thereof. The electrically conductive feed arm may have a distal end with an antenna feed defined thereon.

Abstract: An antenna device including a dielectric resonator antenna configured to generate resonances in a first frequency band; a printed circuit board electrically connected to the dielectric resonator antenna and configured to process radio signals; and a defected ground structure formed on the printed circuit board and configured to generate resonances in a second frequency band using a current flowing on the dielectric resonator antenna and the printed circuit board.

Abstract: A body wearable antenna adapted to be worn against the body, comprising: a first antenna part (4); and a second antenna part (6) insulated from the first part (4); wherein the first antenna part (4) is adapted to be worn circumferentially around a body part (100); and the second antenna part (6) is adapted to be worn longitudinally against a body part (100). The body parts that the first antenna part (4) is adapted to be worn around and that the second antenna part (6) is adapted to be worn against maybe the same. The second antenna part (6) may extend circumferentially around the body part (100) to some extent and may extend along substantially the whole length of the body part (100). The second antenna part (6) may comprise a plurality of radial elements (61, 62, 63) that extend away from the first antenna part (4).

Abstract: A multiband antenna (200) comprising a substrate (202) and at least one conductive plate (204) on the substrate (202). The at least one conductive plate (204) defines a first conductive region (206), a second conductive region (208) and a third conductive region (210). The first, second and third conductive regions (206, 208, 210) are configured so as to define a first gap (212) between the first conductive region (206) and the second conductive region (208); and a second gap (214) between the second conductive region (208) and the third conductive region (210). The multiband antenna also comprises a feeding port (230) comprising a signal terminal (230a). The signal terminal (230a) is configured to couple the second conductive region (208) to a first connecting element for conducting transmit or receive signals.

Abstract: An antenna comprising a network of arrayed radiating elements, a first reflective means comprising a flat central part upon which are disposed the radiating elements and longitudinally folded edges on either side of the array of elements, and at least one second reflective means which is a choke reflector disposed outside of the space separating the radiating elements of the reflector's folded edge. The second reflective means is separated from the first reflective means by a layer of dielectric material in order to connect it to the first reflective means by way of capacitive coupling.

Abstract: An antenna module is provided. The antenna module includes a radiator, a feed conductor, a ground element, a ground conductor and a short conductor. The feed conductor is connected to the radiator. The ground conductor connects the radiator to the ground element. The short conductor connects the feed conductor to the ground conductor.

Abstract: Antenna systems, such as an active antenna system (AAS), can include active and passive electronic components located closely together inside an antenna system. Such systems may benefit from variable adaptation of active antenna system radio frequency signal filtering. An apparatus can include an active part on a first end of a signal path within a sealed enclosure. The apparatus can also include a radiator part on a second end of the signal path within the sealed enclosure. The apparatus can further include an intermediate part, which includes at least one of an additional filter part or a customized passive part, positioned between the active part and the radiator part along the signal path between the first signal side and the second signal side.

Abstract: A data card with a USB plug (207) includes a housing (201) and a cap (203). A data card antenna (205) is disposed in the cap. The cap further has at least one cap wing (209) extending from an opening of the cap. A cap antenna contact (211) is provided on the cap wing. The cap antenna contact is electrically connected with the antenna in the cap. A housing antenna contact (213) is provided on an end portion of the housing. The housing antenna contact is electrically connected with a circuit in the housing. When the cap is relatively fixed to a bottom end of the housing, the cap antenna contact is electrically connected with the housing antenna contact. The disposition of the antenna in the cap reduces a body size of the data card, and therefore reduces a size of the entire data card.

Abstract: Wireless electronic devices may include a backplate and first and second curved antennas spaced apart from each other along an end portion of the backplate. Each of the first and second curved antennas may include a radiating element and a parasitic element electrically coupled to the radiating element. Related systems are also described.

Abstract: A multi-point driving device is provided for a general-purpose base station antenna and includes a fixed member, at least three direction-changeable connectors, a rigid base station antenna, and at least one linear actuator. The fixed member is coupled to an end of at least one direction-changeable connector, which provides a function of direction change. Each direction-changeable connector has an opposite end coupled to a surface of the base station antenna. The linear actuator has an end coupled to the fixed member and an opposite end carrying an operation rod coupled to an end of the direction-changeable connectors that is not mounted to the fixed member and the base station antenna, whereby a direction-changeable structure of at least three points is formed between the base station antenna and the fixed member for changing direction in at least one orientation.

Abstract: An antenna assembly having a characteristic frequency band includes an antenna feed, operatively connected to one of a radio frequency (RF) transmitter, an RF receiver, and an RF transceiver system, and a ground component. A first set of conductive elements, including either or both of linear, bent linear, and curvilinear elements, is operatively connected to the antenna feed. A second set of conductive elements, including either or both of linear, bent linear, and curvilinear elements, is operatively connected to the ground component. Each of the first set of linear conductive elements and the second set of linear conductive elements are configured as to provide substantially equal sensitivity within the characteristic frequency band across all elevation and azimuth angles.

Abstract: Various mobile communication terminals and methods having antenna improvements are discussed. One mobile communication terminal is described which includes an outer front side with a display, an outer rear side having conductive and non-conductive parts, a battery, and an antenna including a radiation unit, part of which is located between the outer front side and the non-conductive part of the outer rear side, a feeding unit which electrically connects the radiation unit to a circuit board, and a ground part which is connected to the conductive part of the outer rear side, electrically connects the radiation unit to the conductive part of the outer rear side, and is separated from the feeding unit by a space.

Abstract: Stepped radio frequency (RF) reflector antennas are disclosed in which an inner RF reflector is disposed in a central opening of at one or more annular RF reflectors. The RF reflecting surface of the inner RF reflector and the RF reflecting surface(s) of the one or more annular RF reflectors can be shaped and positioned relative to each other to have different focal lengths but nevertheless reflect an RF signal to the same focal plane. The depth of the inventive reflector antenna system can be less than the depth of prior art reflector antennas with a comparable RF aperture.

Abstract: An electric conductive trace includes an arch-shaped variation of a shape of at least a portion of a fractal of at least a second iteration. The portion of the fractal is larger than double of a first iteration of the fractal. The shape varied to be arch-shaped for changes of direction includes a curve radius larger than a predefined minimum curve radius.