Abstract: The present invention provides an omni-directional antenna element configuration having a compensated radiation pattern. Broadband antenna elements are coplanarly disposed on a suitable planar dielectric material. A single element omni-directional antenna comprises a pair of balanced fed radiating microstrip elements symmetrically disposed about the centerline of a balanced signal feed network. Additionally, a pair of pattern augmentation rods are positioned on each side of and proximate to the planar dielectric material running longitudinally to the centerline axis of a balanced feed network. Disposed proximate to each radiating element are partially coplanar, frequency bandwidth expanding microstrip lines. The combination of radiating elements together with pattern augmentation rods provides a broad bandwidth omni-directional radiating element suitable for use in multi-element antenna arrays.

Abstract: According to one aspect of the present invention, an antenna reflector apparatus provided comprises a shell body, a reflector indentation, and an antenna. The reflector indentation embedded in the shell body comprises a first indentation opening and a second indentation opening opposite to the first indentation opening. The first indentation opening is on the first surface of the shell body; the second indentation opening is on the second surface of the shell body. And the first indentation opening penetrates the shell body and connects to the second indentation opening. The antenna is located besides the second indentation opening of the reflector indentation. The area of the first indentation opening of the reflector indentation is larger than the area of the second indentation opening.

Abstract: An antenna structure includes a feed end, a grounding end, at least one main radiator, and at least one coupling radiator. The grounding end is separated from the feed end. The at least one main radiator is connected to the feed end. The at least one coupling radiator is connected to the grounding end. Current on the feed end is coupled to the grounding end, and current on the least one main radiator is coupled to the at least one coupling radiator.

Abstract: The present invention relates to a series fed collinear antenna which includes cone-shaped radiating elements energized via a series fed common transmission line. Phasing stubs are provided between selected radiating elements and are oriented such that the phasing stub improves gain and reliability by affecting the signal to produce a beneficial elevational coordinate signal pattern. The radiating elements may be cones. Each cone has an associated base diameter. The base diameter may be uniform, resulting in similarly sized cones, or a cone may have a distinct base diameter resulting in differently sized cone elements.

Abstract: There is disclosed a module for an antenna system, the module comprising a dielectric support and a branched electrically conductive pathway formed on or in the support. The pathway comprises at least three arms each having a proximal and a distal end, the proximal ends being joined together or each connected to at least one other of the at least three arms, and the distal ends being separate from each other and configured as terminals. The modules may be configured as chip antennas. A plurality of antenna modules can connected together in order to create antenna systems with particular desired characteristics.

Abstract: An electronic device has antennas formed from cavity antenna structures. The electronic device may have a metal housing. The metal housing may have an upper housing in which a component such as a display is mounted and a lower housing in which a component such as a keyboard is mounted. Hinges may be used to mount the upper housing to the lower housing for rotation about a rotational axis. Cavity antennas may be formed in a clutch barrel region located between the hinges and running along the rotational axis. A flexible printed circuit may be formed between the cavity antennas. Each cavity antenna may have a first end that is adjacent to one of the hinges and a second end that is adjacent to the flexible printed circuit. Cavity walls for the cavity antennas may be formed from metal housing structures such as metal portions of the lower housing.

Abstract: A combination battery and antenna includes a battery having a positive contact and a negative contact, at least one of the positive contact and the negative contact comprising an antenna coupled to a matching circuit and to a radio frequency choke, whereby direct current (DC) is supplied to a battery circuit and a radio frequency (RF) signal is supplied to an RF circuit, and at least one secondary radiator parasitically coupled to the at least one of the positive contact and the negative contact of the battery.

Abstract: A radiating system for transmitting and receiving signals in first and second frequency regions includes a radiating structure, a radiofrequency system, and an external port. The radiating structure has first and second isolated radiation boosters coupled to a ground plane layer. A first internal port of the radiating structure is between the first radiation booster and the ground plane layer, and a second internal port is between the second radiation booster and the ground plane layer. A distance between the two internal ports is less than 0.06 times a wavelength of the lowest frequency. The maximum size of the first and second radiation boosters is smaller than 1/30 times the wavelength of the lowest frequency. The radiofrequency system includes two ports connected respectively to the first and the second internal ports of the radiating structure, and a port connected to the external port of the radiating system.

Abstract: An antenna structure is disclosed that includes a dipole antenna and a slot antenna extending along a first axis. The dipole antenna and the slot antenna each have a radiation pattern that is omni-directional in an azimuth plane of the Earth. The dipole antenna radiates vertically polarized electric field, and the slot antenna radiates a horizontally polarized electric field.

Abstract: A communication system is provided, including an antenna, a matching network coupled to the antenna, a controller configured to host an algorithm for controlling the matching network, and a look-up table coupled to the controller. The look-up table includes characterization data according to frequency bands and conditions. The controller is configured to refer to the look-up table to determine optimum impedance for a frequency band selected under a condition detected during a time interval, and adjust the matching network to provide the optimum impedance. Part or all of the sections related to the tunable matching scheme can be integrated on a chip.

Abstract: An antenna device is provided. The antenna device comprises a first radiation portion and a second radiation portion. The first radiation portion includes a first end and a second end. The second radiation portion is connected to the first end at a connecting part and includes a first arm and a second arm. The first arm and the second arm have different lengths and extend from the connecting part.

Abstract: An antenna includes a slot feed on the radiator itself (On Radiator Slot Fed Antenna or ORSFA) instead of the slot feed being a separate element. One of the advantages of having the slot feed integrated onto the radiator is that the antenna is less dependent on the adjacent conductive parts, since the feed is coupling to the radiator rather than to ground (as is done in a standard slot feed antenna concept). The Q of the radiator can also be reduced for a given volume, since the coupler is removed from the antenna volume. In an embodiment the antenna can include a transmission line and an impedance match circuit directly on the radiator.

Abstract: A multi-band antenna includes a ground plane, a single antenna element, a frequency multiplexing circuit and at least two feeding strips coupled between the frequency multiplexing circuit and the single antenna element. Furthermore, the feeding of the antenna is arranged by one or more feeding points arranged between the ground plane and the frequency multiplexing circuit. According to first implementation one feeding point is arranged for at least two antenna branches. The signal fed into the feeding point is multiplexed by the multiplexing circuit to the antenna branches. According to at least one other implementation a dedicated feeding point is arranged for each of the antenna branches. At the same time the isolation of the frequencies between the different branches is arranged. This can be achieved e.g. by a multiplexing circuit. Moreover, impedance of the antenna branches can be matched with matching circuitry.

Abstract: A microwave antenna suitable for monopulse radar applications is operable over a broad frequency band. The antenna uses a horn with two walls. Each wall includes two ridges that extend into an inner region of the horn near the horn's base and then taper into the wall surfaces. The horn is coupled to two ridged waveguide sections with the ridges of the waveguide sections matched to opposed pairs of the horn ridges. The antenna may be coupled to electronics via standard waveguides. In many embodiments, dimensions of the waveguides coupled to the horn are smaller (to provide a small array spacing) than dimensions of the standard waveguides with a tapered waveguide section providing a transition. In one embodiment, the antenna operates with frequencies from 5.25 to 10.5 GHz.

Abstract: A wireless communication apparatus includes a first antenna, an antenna driving circuit, a first medium, a second medium, and a second antenna. The antenna driving circuit drives the first antenna. The first medium is electrically connected between the first antenna and the antenna driving circuit. The second medium and the first medium are in energy coupling. The second antenna is electrically connected with the second medium.

Abstract: A low impedance slot fed antenna with a slot and an element configured to resonate is depicted. The orientation of the slot is configured so that a slot current is not opposed to a return current associated with the element. This helps decrease coupling between the slot and the element, which can benefit high Q antennas.

Abstract: Methods and apparatus are disclosed for passively steering an antenna disposed on a balloon in a balloon network. An example balloon involves: (a) an antenna and (b) a pressure-sensitive mechanism in mechanical communication with the antenna such that a change in the balloon's altitude causes at least an element of the antenna to rotate upward or downward, a separation distance between two or more radiating elements to increase or decrease, or a separation distance between the two or more radiating elements and a reflector to increase or decrease.

Abstract: A radiating system of a wireless device transmits and receives electromagnetic wave signals in a frequency region and comprises an external port, a radiating structure, and a radiofrequency system. The radiating structure includes: a ground plane layer with a connection point; a radiation booster with a connection point and being smaller than 1/30 of a free-space wavelength corresponding to a lowest frequency of the frequency region; and an internal port between the radiation booster connection point and the ground plane layer connection point. The radiofrequency system includes: a first port connected to the radiating structure's internal port; and a second port connected to the external port. An input impedance at radiating structure's disconnected internal port has a non-zero imaginary part across the frequency region. The radiofrequency system modifies impedance of the radiating structure to provide impedance matching to the radiating system within the frequency region at the external port.

Abstract: A metallic shaping plate located in the interior housing of a wireless device is disclosed. The metallic shaping plate may influence a radiation pattern being generated by a horizontal antenna array. The result may be an increase in the gain of the array.

Abstract: An antenna device includes an impedance-matching switching circuit connected to a feeding circuit, and a radiating element. The impedance-matching switching circuit matches the impedance of the radiating element as a second high frequency circuit element and the impedance of the feeding circuit as a first high frequency circuit element. The impedance-matching switching circuit includes a transformer matching circuit and a series active circuit. The transformer matching circuit matches the real parts of the impedance and matches the imaginary parts of the impedance in the series active circuit. Thus, impedance matching is performed over a wide frequency band at a point at which high frequency circuits or elements having different impedances are connected to each other.