Optimizing a prestressed concrete T-frame beam, selecting reasonable effectiveheight of section and prestressed steel area can improve the beam's performance and reduce the cost.
The affection of parameter variation of down lead wires and top loading wires on effectiveheight, radiation pattern, input reactance, radiation resistor and static capacitance is discussed.
同时研究了引线及顶线的各项参数变化对天线的有效高度、增益、输入电抗、辐射电阻及静电容的影响。
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Besides above, the equipment includes a device which calculates the effectiveheight compared to the terrain by using the above signal, and a screen display which USES the chart to show the results.