PLL, Mixer, LNA 등등
➩ 외부 조건에 의해 동작 특성 변경 가능 (Nonlinear 특성)
➩ 외부 DC 전원 필요
Passive Device : Filter, Duplexer, Ant 등등
➩ 외부 조건에 의해 동작 특성이 변경되지 않음
➩ 외부 DC 전원이 필요 없음
각 Device들은 수신기 전체의 이득/손실 및 Noise Figure
를 결정
metabolic energy harvesting) : 나무를 에너지원으로 이용.
⑤ 혈당 에너지 하베스팅(Blood sugar energy harvesting) - "`"이라고도 한다. 혈당의 산화과정에서 에너지를 얻는다.
⑥ 소음에너지 하베스팅(Noise harvesting) - 이탈리아의 NiPS연구소에서 진행하는 연구로서, 소음의 음파를 에너지로 변화하는 개념이다.
radiator hose is--
DARRELL
Damn. Gonna be another hot one today.
Sometimes I dont even want to get out of
bed. Course dont want to get out for the
cold ones neither. Then of course the
clouds come in...
Darrell mops his brow with a greasy rag. It doesnt so much
wipe the sweat as it does streak his forehead with dirt.
BOBBY
Look, Harlin, Ive got places to be.
DARRELL
Darrell--
BOBBY
OK. Darrell...
noise.
I talked to Gert.
Shes coming over tomorrow night.
Thats when Im going to tell Grandma.
I need you and Arty.
Youre gonna back me up on this, right?
Dont get Grandma upset,
because I really need her in a good mood.
Look at me. I cant stop eating.
I ate three pretzels today.
- You ate them? Why didnt you tell her?
- She knew I ate the pretzels.
She said, "Why are you eating so much?
You nerv