㵀〉㱎㱫㺚ㅕ㺲ᱨ⯿⪰⤧㖲⼋㠬⿱➶㣨☨⫑〉㴓ᮣ㝌☨ㅠ㑛⊪⸶␌⼋☨
㟜㱫⏸㗷ᱨ㋦㺲㔢⭆㓞㔠⏸㗷 (S ⏸㗷 ) ☨⡣ㅴᮣ⪑⛶㮥㨗㔠㊷⫑〉㺌㖰ᱨ㑥║
㗞㦏⧧㖱イ㙱㴖㟰ⱌ㨾⪰⤧ᮣ
㗁☦ⶖ⭒⤇㙶ㅢ⤗㝗⤅⢕㺸⢕㬥㱫㲂㵀 DC-110 GHz ➖㢙ㅠ⍙㸛㴐⮔㝎㩂☨⍖
⼋㠬⿱➶㣨㮱⧧㖲⼋㠬⿱➶㣨㮱ᮣ⪑㮾㢜㸆㨗㮱㋹㝗⤅⢕㺸㫍⮔ᱨ㮾⮈⪇㖯
㬕㗌⧧㔶⪏ⳅ㺲☨␌㗎ᮣ
通信系统中的测量要求
㵀㑌⧨㟜㨳㥥㟧㺲ᱨ⛞⍄㩙ⶌ⿑㨳⧟㖡㸊☨㱘㦜ᮣⲳ⤸㣄わ㮥⊑㺝ⶌ⿑➧㦏㩂
㨕㱎㯧㋲☨㖡㸊 ( ⺋㑥ᱨ☕㚱㱎㱫☨㴾⏒㨳⧟㯧㋲⩽♛㖡㸊㖫 ) ᱨ☏╥█☨㦏㩂
㥥㟧㮜ㅢ㯧㑩㨳⧟㖡㸊ᮣ㱱㲂㦏㩂㥥㟧ㅢ⡢⍐㨳⧟⢕⢔㊷㋙➶⼋☨⟙⛪⫊
㦐㢭⤴㥥ᱨ㚱㮾㱸ㅢ⡢⍐㚱㟜⥙㨳⧟☨㖫⭺⏒㨼ᮣ
㦆㵀ᱨ㣄わ⹂㽰㥨☨㫼ⳑ㦏㩂㝎㩂⧧➧㦏㩂㝎㩂㺐⭺☨␘⍜ᮣ
㦏㩂㋹⮔㖳㗞㑩㨳⧟㔶⟙⛪⧧㦐㢭⍐⪇ ( 㟰 1)ᱨ㵀㗞㑩⛭ⓞ㦆☨㑌⧨㸡㦂㎺
㦏㮜⯿㮾㦐㟠㊷⿔ⓞ㦆㵀㗞ⓞ⛭ᱨ✚⏥⪹㨼⒱㨰㨳⧟ᮣ㣐㗁㱸㴚⫊㗁㣐㴚➧
㦏㩂㋹⮔ᱨ⛞ㅢ㖳㗞㑩㨳⧟☨㊷⿔㊭㴓⹂☨㢭㺥ᱨ⫊㵜⭩㋦㚴㊷⿔➶⼋ᱨ
㑥㨡⏒㨳⧟⫊⭚㔶㨳⧟ᮣ⥙▙☨㗞㑩㨳⧟㟜⒋⪹㋊㖳㦏㩂㋹⮔ⱌ㑩㫥㚭⫊⌑⧧
㽔㜢ᱨ╹✚㯧㋲➧㦏㩂⤀㾗ᮣ
Linear behavior
– input and output frequencies
are the same (no additional
frequencies created)
– output frequency only
undergoes magnitude and
phase change
Time
A
t
o
Frequency
f
1
Time
Sin 360º * f * t
Frequency
A
phase shift =
t
o
* 360º * f
1
f
DUT
A * Sin 360º * f (t – t
o
)
Input Output
Time
Frequency
Nonlinear behavior
– output frequency may undergo
frequency shift (e.g. with mixers)
– additional frequencies created
(harmonics, intermodulation)
f
1
㟰 1. 㦏㩂㝎㸛⧧➧㦏㩂㝎㸛☨⌴Ⱓ
3
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