Inductance straight wire

Examples of FSS groundplanes are shown in Fig. 5.1. More specifically, we show a typical practical version in Fig. 5.1a. Each colunm consists of closely spaced straight wire sections interlaced as shown. Associated with the central part of each wire section is some inductance and associated with the small gap between them is some capacitance. Thus, the equivalent circuit will look approximately as shown in Fig. 5.1b. At resonance the reactance of such s sheet is zero that is, it will act as a groundplane as noted already above. 

Alternatively, the practical layout may also be executed by using actual lumped elements as shown in Fig. 5.1c. In fact, the inductances can consist of straight wire sections as shown in Fig. 5.Id. Similarly the capacitors may be partly lumped. They are simply in parallel with the end capacitors between adjacent element tips. This capacitance can be much more significant than many people expect (for further connnents concerning this subject see references 89 and 90). Thus, the lumped capacitors act more like a fine-tuning device. See also Section 6.4. 

If Cl is 0.01 mfd, then the dashed line does not have to be attached at all, in which case there are only two capacitors. The reason this works is that there is sufficient "distributed capacitance" inside the inductor, and between wires, so there is enough phase change to get oscillations going. (This is similar to the case of slight inductance with even a straight wire, as mentioned on page 179.)... 

Even a straight wire has some slight inductance (briefly mentioned on page 103), and any pair of wires has some slight "distributed capacitance," (examples on pages 184 and 205). For a simple "transmission line" pair of wires, if L and C... 

A third passive two-terminal electrical component can also be seen in the LAB electrical models the inductor. This component is connected in series to represent the battery behavior in high frequencies in order to fit EIS measurements. One has to keep in mind that such a component does not really describe the battery, but only the cables used to connect it to the load (or the charger). For EIS, the rule of thumb is approximately 10 nH per centimeter of cable. Otherwise, the self-inductance L (in nH) of a straight wire of length I, small diameter d, made of a metal having a relative permeability equal to 1 (like Cu or Al, but not Fe) can be calculated as follows [30] ... 

Figure 10.236 illustrates the proper way to bond guy wires to the buried ground system. The lead is dressed straight down from the topmost to the lowest guy. It should conform as close to vertical as possible, and be dressed downward from the lower side of each guy wire after connecting to each wire (Fig. 10.234). To ensure that no arcing will occur through the turnbuclde, a connection from the anchor plate to the perimeter ground circle is recommended. No. 2 gauge copper wire is recommended. This helps minimize the unavoidable inductance created by the conductor being in the air. Interconnect leads that are suspended in air must be dressed so that no bending radius is less than 8 in.

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