Question about 25% duty-cycle LO IQ Up-Mixer！ any ref。 paper？

nmos · 发表于 2011-8-27 16:38:40

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Question about 25% duty-cycle LO IQ Up-Mixer！

1. 25% duty-cycle LO Up-Mixer provide extra 3dB gain，why？
2. IQ up-mixer can provide another 6dB gain just for its I/Q property？

Arvinliu · 发表于 2013-12-25 10:36:01

路过同问

buckaroo · 发表于 2013-12-28 21:34:11

too simple sometimes naive
1. check every paper which mentioned 25%LO
2. of course NO, sin+cos=sqrt(2)sin, so, 3dB

pop326 · 发表于 2014-4-5 14:29:02

本帖最后由 pop326 于 2014-4-5 14:30 编辑

1. 25% duty cycle LO has higher gain than that of 50% duty cycle LO because LO overlap does not exist in switching pair.

2. NO, it's 3-dB gain in theory.

[求助] Question about 25% duty-cycle LO IQ Up-Mixer！ any ref。 paper？

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