Abstract: A portable system for the validation of a semi-anechoic chamber includes an antenna including a radiative element having a measurement point. Also included is a transmit mast having a deployed configuration and a stowed configuration, the transmit mast including a base, a vertical support, and an antenna mount configured to hold the antenna in a vertical arrangement and a horizontal arrangement while the transmit mast is in the deployed configuration, with the vertical arrangement of the antenna including the radiative element being oriented to have a vertical polarity, and with the horizontal arrangement of the antenna including the radiative element being oriented to have a horizontal polarity. The portable system has a deployed configuration and a stowed configuration. The portable system may be sized such that when the transmit mast is in the stowed configuration, the portable system fits inside a carry-on luggage.

Abstract: The outdoor antenna includes multiple directors located respectively on a main rod and two assistant rods, and an inner-swing arm and an outer-swing arm fixed on the main rod and coupled with two ends of the assistant rods. When the inner-swing arm and the outer-swing arm are expanded, the assistant rods are fixed on two sides of the main rod; when the inner-swing arm and the outer-swing arm are folded, the assistant rods are positioned in parallel with the main rod. In use, the inner-swing arm and the outer-swing arm are expanded to allow the assistant rods to move toward the two sides of the main rod and maintain in a certain spatial distance to receive as many radio signals as possible. During transportation and storage, the assistant rods can lean against two sides of the main rod, so that occupied space is reduced to achieve usability.

Abstract: The present invention discloses a wireless communication device with an extendable planar antenna. The antenna is made of a radiating loop, and a ground plane, wherein the loop is parallel to the ground plane and the distance between the loop and the ground plane is configurable, attaining at least two positions: a stowed position where the loop is close to the ground plane, and an operational position where the loop moves apart from the ground plane, to improve the antenna radiation properties. According to one embodiment, this wireless device is a Personal Locator Beacon (PLB) for Search and Rescue (SAR) of people in distress, configured to be wrist worn.

Abstract: A antenna is described including a first frame having a first loop antenna element disposed thereon; a second frame having a second loop antenna element disposed thereon, the second frame disposed perpendicular to the first frame in an operational mode and disposed parallel to the first frame when in a stored mode; and a third frame having a third loop antenna element disposed thereon, the third frame disposed perpendicular to the first and second frame in an operational mode and disposed parallel to the first and second frame when in a stored mode.

Abstract: A radio frequency identification (RFID) tag using a monopole antenna is provided, in which an antenna structure is disposed on a metal plate, two ends of an RFID chip are electrically connected to the antenna structure, and the antenna structure and the RFID chip form a loop structure. The RFID tag can be disposed on a surface of an object to be measured, or disposed in an inner accommodation space of the object to be measured, so it is widely used in various applications. Additionally, the RFID tag is easily manufactured, so the production cost can be reduced. Furthermore, the RFID tag has a larger readable distance, and an electromagnetic wave emitting direction of the RFID tag is adjustable according to different included angles between the metal plate and the antenna structure, thereby causing signals to be read easily and identification ability to improve, two desirable effects.

Abstract: In a portable radio communication apparatus including a housing, at least one part of the housing is formed as a housing electrical conductor portion by an electrically conductive material. The housing electrical conductor portion is connected with a radio communication circuit of the portable radio communication apparatus so as to operate as at least one part of an unbalanced type antenna of the radio communication circuit. Further, the portable radio communication apparatus further includes a boom portion coupled with the housing at least at two positions so as to provide at least one penetrating hole between the housing and the boom portion.

Abstract: In a portable radio communication apparatus including a housing, at least one part of the housing is formed as a housing electrical conductor portion by an electrically conductive material. The housing electrical conductor portion is connected with a radio communication circuit of the portable radio communication apparatus so as to operate as at least one part of an unbalanced type antenna of the radio communication circuit. Further, the portable radio communication apparatus further includes a boom portion coupled with the housing at least at two positions so as to provide at least one penetrating hole between the housing and the boom portion.

Abstract: A loop antenna is formed on one side of a circuit board and an IC chip is mounted on the same side of the circuit board. An inner end of the loop antenna is connected to an antenna connection terminal of the IC chip. An arm part provided with a first pad part, a second pad part, and a conducting wire for allowing conduction between the fist pad part and the second pad part is collapsibly provided in such a manner that, when the arm part is collapsed, an outer end of the loop antenna contacts the first pad part and an antenna connection terminal of the IC chip contacts the second pad part.

Abstract: An antenna assembly for forming and directing a transmit beam, and for controlling receive and transmit beam tracking of a spacecraft in the presence of planetary aberration. The assembly includes a main reflector, a sub-reflector centered along an optical axis of the main reflector, and a moveable transmit feed for directing electromagnetic radiation along a longitudinal axis thereof. The assembly also includes an intermediate beam waveguide assembly arranged between the moveable transmit feed and the main reflector, wherein the intermediate beam waveguide assembly includes fixed and moveable optical components for guiding electromagnetic beam energy between the moveable transmit feed and the main reflector. A beam steering mechanism is coupled with the moveable transmit feed for angularly displacing the transmit beam from the optical axis by displacing the moveable transmit feed in a direction substantially orthogonal to the longitudinal axis of the transmit feed.

Abstract: A device (28) is transported into space for transmitting information from space to earth. On the device (28) there is disposed a plurality of reflectors (10) to be distributed in a raster or grid configuration on a framework (11). Of these reflectors (10), certain reflectors (10), which are selected as a function of the information to be transmitted, are brought into a position in which they reflect light beams, emanating from the sun, to the earth (26). The respective information becomes visible to an observer on the earth (26) in that the selected reflectors (10) give a sequencing of light points which corresponds to the information to be transmitted. On the other hand, the reflectors (10) which are not needed to the display of the respective information are in a position, relative to the sun, which does not allow these reflectors (10) to be perceived as light points by the observer on the earth (26).

Abstract: A wireless communication terminal comprises a first housing section including an antenna for enabling wireless communications with the terminal and a second housing section including a second communications antenna, the second housing section being extendibly connected to the first housing in an manner such that when the second housing section is in its extended position the second antenna is located one half wavelength from the first antenna. One or both of the antennas may be a fixed type, e.g., a whip or stub, or a retractable type, e.g., telescoping. The antennas may be located external or may be internal (e.g., patch type antennas) to the housing sections.

Abstract: A tubular mast has a tubular boom detachably mounted thereon, and a plurality of tubular antenna elements are detachably mounted on the boom. An elastic cord is disposed within and is connected to the boom. A further elastic cord is disposed within and is connected to the mast. Additional elastic cords are disposed within and are connected to the antenna elements. The elastic cords disposed within the mast and the antenna elements are slidably connected to the cord portion disposed within the boom. The elastic cords maintain the components in operative position and allow the components to be detached from one another to fold the antenna into collapsed position.

Abstract: A computer card data receiver (10) includes a housing (14) having a top planar surface (16) and a bottom planar surface (18) and a thin profile suited to fit within a recessed data interface port (32) of an external computer (30). An antenna (12) is coupled to the top planar surface (16) of the housing (14) for intercepting transmitted selective call address signals and data associated therewith. The antenna (12) is rotatable between a first antenna position (12A) and a second antenna position (12B), the first antenna position (12A) being selected when the housing (14) is removed from the recessed data interface port (32), and the second antenna position (12B) being selected when the housing (14) is inserted into the recessed data interface port (32). A receiver (40) is enclosed within the housing (14) and receives and detects the intercepted selective call address signals and data associated therewith.

Abstract: A portable and collapsible supporting structure for a multi-element quad antenna comprising a horizontal telescopic boom upon which are mounted several sets of folding spreader arms radiating from the boom, each arm being pivotally connected to it. Each set of spreader arms can be immobilized in a common angular position with the boom, whereby several quadrangular loops may be hung between said spreader arms. The boom is supported by a multi-element mast. The mast itself rests on the hollow cylindrical base which doubles as a sheath for the storage and transporation of the various dismantled elements of the structure.

Abstract: A Cubicle Quad antenna having radial spider arms on a boom, a plurality of wire elements on each spider arm, with each element encased in a non-conductive material rod, and a ball-and-socket joint at each corner of each element-rod where it is secured onto a spider arm, so as to permit a wind or weather caused movement of the antenna and its element-rods without causing a breaking of a wire element at each corner thereof.

Abstract: This invention concerns itself with improvements to cubical quad antennas. The chief disadvantage to cubical quad antennas is their relative lack of strength and vulnerability to high winds and icing conditions. The present invention provides for a spreader reinforced crossarm system that adds appreciably to the strength of these antennas. There is also the added advantage that additional elements can be added and supported by the aforementioned guy line support system, thus alleviating the necessity for a crossarm assembly for each element. The one additional advantage of the invention is that elements can be supported by the ends of the spreaders themselves, thus affording a greater distance between elements than would be possible with just the boom and no spreaders with the effect of increasing the gain of the antenna array.

Abstract: A space based radar antenna array is provided which includes a loop antenna, a narrow cylindrical central support column, and an erectable support structure for connecting the support column to the loop antenna. The loop antenna, the support column and the support structure together form a generally umbrella-like apparatus which is erected to deploy the antenna. When deployed, the loop antenna assumes a circular shape oriented in surrounding relation to the central support column. In the non-deployed state, the loop antenna is collapsed adjacent to the support column. The loop antenna comprises a plurality of printed circuit, end-fire YAGI-UDA antenna units.