Antenna dimension: Dipoles of a dual-polarized antenna in different polarization directions are sufficiently isolated even if the dipoles are overlapped. Therefore, a dual-polarized antenna is no larger than a single-polarized antenna.翻訳 コレクション ドキュメントのダ...
and vice versa. Once RF energy is captured, it is conducted through waveguide interconnection or picked up by coaxial interface, and then transmitted through coaxial components. Vice versa, because the waveguide antenna is a symmetrical system. The frequency range and antenna polarization depend on t...
There are some exotic propagation modes that operate differently, but for a terrestrial LOS path, the signal polarization tends to stay relatively constant. [...] for this case, it is fairly important to be able to respond to the appropriate polarization. [...] the dipole requires two ...
Antenna effective aperture, however, is not always directly related to how big or small an antenna is. Shape, antenna type, polarization, power, and other design elements have enabled small antennas with apertures similar in size to physically bigger systems. Aperture size is just one important ...
What is the difference between linear and circular polarization for LoRa? Linear polarization aligns the electric field in one plane, either vertical or horizontal. Circular polarization rotates the field in a helix, making antenna orientation less critical for endpoint communication. ...
What is an Aperture Antenna? An Antenna including an aperture at the ending is known as an Aperture antenna. The best example of this antenna is Waveguide. Here, the aperture may be square, cone, rectangular or circular. Antenna aperture is the area around an antenna where power can be der...
Antenna Polarization The polarization of the antenna also affects the read range. The most common types of polarization are linear and circular. Linear polarization is when the antenna’s electric field is parallel to the ground. Circular polarization is when the electric field rotates around the ax...
A whip antenna is almost always vertically mounted onto its base vehicle, resulting in vertical polarization. Because they radiate in every direction on a horizontal plane, whips are often referred to as omnidirectional. This is not strictly true, however, since all whip antennas have a conical ...
The NFC chip of the transmitter generates AC voltage at a frequency of 13.56 MHz and drives the transmitter coil (antenna). This AC voltage leads to a current flow through the coil that creates an alternating/rotating magnetic field. The magnetic field induces an emf in the receiver coil to...
关键词: patch antenna antenna miniaturization engineered substrate circular polarization DOI: 10.1016/j.tics.2010.01.001 被引量: 530 年份: 2010 收藏 引用 批量引用 报错 分享 全部来源 免费下载 求助全文 全文购买 Taylor & Francis Elsevier Semantic Scholar (全网免费下载) dx.doi.org Ingenta 查看更多 ...