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发表于 2024-2-8 07:31:31
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本帖最后由 BG1TRP 于 2024-2-8 07:55 编辑
我也觉得fo在这里的作用是代词的作用,但具体是哪个的代词就说不清了。不会是f0,0与o在文中还是有区别的。有fo的几个地方如下:
This analysis applies to an AM detector fed by a CW RF sine wave voltage of frequency fo: It has a peak (not RMS) value equal to V1 and an internal source resistance of R1.
这里的fo看似是”馈电信号的频率“,或者用网络语理解为“关注”好像也行,即“所关注的频率”。
The shunt input reactance of the circuit is assumed to be zero at all frequencies except fo, the frequency to which the tank is tuned.
这里的fo看似是“以下”的意思(follow)或者是指后面的短句,像是"that"的作用。
The detector tank circuit T is modeled as lossless and resonant to the input frequency fo. The input resistance at fo will be discussed later.
这里的两个fo看似指的是“detector tank circuit T”的调谐频率或谐振频率。
The bypass capacitor C2 has a very low reactance compared to the load resistor R2 at the frequency fo. Since C2 acts as a short circuit across R2 at the frequency fo, all of the RF voltage across T will appear across the Diode. The time constant, R2*C2 should be long compared to the time for one cycle of fo.
这里的fo好像得看上文才能明白,多半是指检波器输入信号。
V1, at a frequency fo, looking toward the load resistance R2, will see an RF resistance (at fo) equal to the junction resistance of the diode at zero bias.
这里的fo好像指的也是检波器输入信号或输入信号的频率。
头一次遇到fo,还是在技术文章里。
如果指输入信号,直接写也不麻烦啊。
如果fo代表某个数值,或者是某个参数的代号,一般Tongue会在文章前面予以说明,难道这次他忘了?
我再按照fo是某个数的代号的思路捋一遍。
谢谢。
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