Transmission and reception properties of non-reciprocal antennas
Transmission and reception properties of non-reciprocal antennas
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DOI：
10.23919/eucap.2017.7928252
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发表时间：
2017-03
期刊：
影响因子：
--
通讯作者：
M. Nagai;H. Imada
中科院分区：
文献类型：
--
作者：
M. Nagai;H. Imada
大多数天线理论认为天线是互易的，尽管非互易无源天线可以使用回转器和环行器。我们描述了发射和接收天线的基本性质，可以是非互易的，然后联系他们考虑热力学平衡。推导了基本方程的一个推广形式，它适用于任何无源天线。基于推广的基本方程，我们提出了接收天线的一个新性质--接收效率。接收效率等于互易天线的辐射效率。非互易无源天线的特性可以与接收效率一起组织，从而形成发射和接收对。进一步，我们引入互易共轭，构造了一个具有两个互易天线的非互易天线模型。
Most antenna theories treat an antenna is reciprocal, though non-reciprocal passive antennas are possible with gyrators and circulators. We describe basic properties of transmitting and receiving antennas which can be non-reciprocal, then related them considering thermodynamic equilibrium. An extension of the fundamental equation is derived, which is valid for any passive antennas. Based on the extended fundamental equation, we propose to define a new property of receiving antenna, reception efficiency. The reception efficiency is equal to the radiation efficiency for reciprocal antennas. The properties of a non-reciprocal passive antenna can be organized with the receiving efficiency, making transmission and reception pairs. Further, we introduce reciprocity conjugate and construct a non-reciprocal antenna model with two reciprocal antennas.