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天线阵之阵因子
2013-5-3 23:32
今日头条
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- We'll now derive the most important function in array theory - the Array Factor. Consider a set of N identical antennas oriented in the same direction, each wit ...
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天线阵之天线分集Antenna Diversity
2013-5-3 23:30
今日头条
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- Using antenna arrays for diversity reception is one of the most straightforward uses of antenna arrays. Because the power level of a received signal can vary si ...
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天线阵列之相控阵
2013-5-3 23:27
今日头条
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- An antenna array (often called a 'phased array') is a set of 2 or more antennas. The signals from the antennas are combined or processed in order to achieve imp ...
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天线家族之NFC天线
2013-5-3 23:12
今日头条
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- How do NFC antennas work? This page will discuss that in a simple manner. We'll try to explain why NFC antennas aren't really antennas at all (like the dipole a ...
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天线家族之望远镜
2013-5-3 23:10
今日头条
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- On this page, we'll discuss the telescope from an antenna theory perspective.
Telescopes aren't really antennas. Antennas are connected to a receiver or transm ...
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天线家族之Vivaldi天线
2013-5-3 23:07
今日头条
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- Vivaldi antennas are simple planar antennas that are very broadband. The polarization is linear, and the basic antenna structure is shown in Figure 1:
Figure ...
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天线基础之傅立叶变换
2013-5-3 23:02
今日头条
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- The world of electromagnetics and radiation is governed by Maxwell's Equations, a set of complicated vector differential equations for determining Electric and ...
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天线家族之喇叭天线2
2013-5-3 22:58
今日头条
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- To give an idea of the radiated fields from a horn antenna, a specific example will be given. The waveguide dimensions are given by a=3.69 inches, b=1.64 inches ...
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天线家族之喇叭天线1
2013-5-3 22:56
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- Introduction to Horn Antennas
Horn antennas are very popular at UHF (300 MHz-3 GHz) and higher frequencies (I've heard of horn antennas operating as high as 14 ...
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天线家族之波导缝隙天线3
2013-5-3 22:52
今日头条
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- On the previous page on slotted waveguides, it was shown that for a single waveguide strip, the radiation pattern tends to have a very wide beamwidth in the E-p ...
