Antenna
AssigneeEtop Technology Co., Ltd.
InventorsShyh-Jong Chung, Yu-Shin Wang
Life of this patent
Estimating the term…
Abstract
An antenna has a central core with a central coupling region. A pair of helix antenna lines is formed a surface of the central core. A balun transformer is formed on a circuit board and electrically coupled to the pair of radiating antenna lines. Wherein, the circuit board has a protruding structure to affixing into the central coupling region of the central core. A signal input/output (I/O) end of the antenna is at another end of the balun transformer. The balun transformer preferably uses the LC resonators in two paths with a desired equivalent resonant length, so as to preferably produce the difference by half wavelength.
Claims20
An antenna, comprising:
- a central core, having a central coupling region;
- one or two pairs of radiating antenna lines, formed a surface of the central core;
- and
- a balun transformer, formed on a circuit board and electrically coupled to the pair of radiating antenna lines,
- wherein the circuit board has a protruding structure to affixing into the central coupling region of the central core, wherein a signal input/output (I/O) end of the antenna is at another end of the balun transformer.
A balun structure, suitable for use in electrical coupling to an antenna radiating part, the balun structure comprising:
- a circuit board;
- a first path on the circuit board, including a circuit formed from a capacitor and an inductor, so as to have a first equivalent length with respect to an operating wavelength;
- and
- a second path on the circuit board, including a circuit formed from a capacitor and an inductor, so as to have a second equivalent length with respect to the operating wavelength, wherein an equivalent length difference between the first and the second paths is half wavelength,
- wherein the first path and the second path have a commonly connected node for serving as a signal input/output (I/O) end.
Dependencies are inferred from the claim text.