摘要:
Disclosed are a system, apparatus, and method for modifying a dipole antenna to comprise unequal arm lengths for matching the condition of two different dielectric materials such as air and human body. The modified dipole antenna is built in a cylindrical pipe shape dipole that has a hollow center to let wires pass through it and has little to no effect in antenna performance. The antenna can be bent in different shape to fit in any wireless product of any shape or size. The antenna is designed to provide a stable radiation at one side and partial radiation at front side even with human body intervention. Further the antenna can be combined with another similar antenna via a power splitter/divider to form a full 360 degree radiation pattern even in presence of a human body in proximity.
摘要:
Transpondeur radiofréquence (1, 5) correspondant à l'assemblage, sans connexion mécano-électrique, d'une antenne rayonnante (10) et d'une partie électronique (20, 30). L'antenne rayonnante (10) est un ressort hélicoïdal mono brin formant une antenne dipôle. La partie électronique (20, 30) est composée d'une puce électronique (22, 32) et d'une antenne primaire (24, 34), couplée électro magnétiquement à l'antenne rayonnante (10), encapsulées dans une masse rigide et isolante électriquement (29, 39).
摘要:
A multiband antenna, having a reflector, and a first array of first radiating elements having a first operational frequency band, the first radiating elements being a plurality of dipole arms, each dipole arm including a plurality of conductive segments coupled in series by a plurality of inductive elements; and a second array of second radiating elements having a second operational frequency band, wherein the plurality of conductive segments each have a length less than one-half wavelength at the second operational frequency band.
摘要:
Disclosed herein is a method for applying a conformal coating to one or more radio frequency elements of an antenna or antenna array. Said method is characterized in that the conformal coating is based on a thermoplastic material produced from a mixture comprising a thermoplastic polymer and an olive pomace.
摘要:
Es wird eine Vorrichtung zum Senden- und/oder Empfangen von elektromagnetische Wellen, insbesondere für ein Uboot, vorgeschlagen, wobei die Vorrichtung eine Antenneneinheit mit einem ersten Antennenelement und einem zweiten Antennenelement aufweist, wobei die Antenneneinheit zwischen einer in ein Trägerelement eingefahrenen Stauposition und einer aus dem Trägerelement ausgefahrenen Gebrauchsposition verfahrbar ist und wobei in der Gebrauchsposition die Antenneneinheit wahlweise in einem ersten Betriebsmodus und in einem zweiten Betriebsmodus betreibbar ist, wobei ferner das erste und das zweite Antennenelement im ersten Betriebsmodus zu einer Dipol-Antenne und im zweiten Betriebsmodus zu einer Monopol-Antenne miteinander verschaltet sind.
摘要:
The present invention provides a dipole fixation in an antenna system for fixing dipoles (1) on a reflector (2), the dipole fixation comprising fixing members (3) passing through apertures on the reflector (2) to fix the dipoles (1) on the reflector (2); a first non-conductive member (4) arranged between the dipoles (1) and the reflector (2); and a second non-conductive member (5) arranged between the fixing members (3)and the reflector (2). The dipole fixation of this invention avoids any metal contact between the dipoles and the reflector, guaranteeing the PIM reliability for a long time and obtaining a stable connection.