Fɛɛrɛ jɔnjɔn minw be se ka kɛ sababu ye ka Ultra-mankan dɔgɔya OCXOw kɔnɔ
Oven-Contrôled Crystal Oscillators (OCXOs) be lɔyɔrɔba dɔ la min tɛ se ka yɛlɛma wagati tigitigi la, ani u ka baara ɲuman be bɔ fazi mankanw kɔlɔsili la cogo labɛnnin na. Walisa k’o laɲinita dafa, a ka ɲi ka yɛlɛmanibaw kɛ k’a ta minanw sugandili ma ani circuits dilanni ma ka taga a bila lamini kɔlɔsili la. Dugumanla la, fɛɛrɛ jɔnjɔn wɔɔrɔ be sɔrɔ minw be se ka ultra-fazi mankan fitininw faamu.
Fɛɛrɛ jɔnjɔnw
1. Funteni maracogo tigitigi
Tasuma min be kɛ ni yɔrɔ fila ye, o sababu fɛ, kristali ka funteni be basigi a ka funteni yɛlɛmayɔrɔ la (a ka ca a la, degere 75-85 ), o be lamini funteni yɛlɛmaniw ka nɔɔ dɔgɔya ka se 1/100 ma min tun be yen fɔlɔ la. O funteni kɔlɔsili fɛɛrɛ tigitigi be mankan min be sɔrɔ funteni fɛ, o sira bali ka ɲɛ.
2. Ka kristali minanw fisaya
Stress-relieved SC-cut kristaliw be ta ka laada AT-cut kristaliw nɔnabila, ka fara ion etching fɛɛrɛ kan, min be dɔ fara kristali kɔnɔna Q factor kan ni 30% ye. O yɛlɛmani be 1/f mankan dɔgɔya ka ɲɛ ni 6-8 dB ye.
3. Fɛɛn kura minw kɛra circuit architecture la .
Ka baara kɛ ni -base oscillation circuit topologie kelen ye, ka fara JFET minɛnw kan minw mankan ka dɔgɔ, o be kuran mankan dɛmɛ dɔgɔya ka se -170 dBc/Hz duguma. A simɛtiri danfara labɛncogo be mankan min be kɛ cogo kelen na, o donni bali tugun.
4. Masiniw labɛncogo ɲuman
A ka yɔrɔ caaman -yɛrɛyɛrɛ isolation montage system, ka fara so labɛncogo ɲuman kan ni fɛn dantigɛninw sɛgɛsɛgɛli ye, o be OCXO ka sensitivite dɔgɔya kɛnɛma mekaniki yɛrɛyɛrɛw la ni 20 dB ye. O dilan cogo bɛnnin lo kɛrɛnkɛrɛnnin na yɔrɔ minw na -yɛrɛyɛrɛ ka ca i n’a fɔ sanfɛlafɛnw ani mobili baara.
5. Kuran dilanyɔrɔ saniyali .
Ɲɛyirali fɛ, n’an be ɲɔgɔn minɛ ni yɔrɔ saba ye, n’an be ɲɔgɔn minɛ ni yɔrɔ saba ye, n’an be ɲɔgɔn minɛ ni yɔrɔ saba ye, n’an be ɲɔgɔn minɛ ni yɔrɔ saba ye, ani n’an be baara kɛ ni filtɛri ye, o be PSRR (PSRR) fisaya ka se 80 dB ma. O wagati la, AM-PM yɛlɛmani saracogo fɛɛrɛ dɔ labɛnna yɛrɛmahɔrɔnya la, o be baara kɛ walisa ka fazi tiɲɛniw bali ka bɔ yen ka ɲɛ minw be sɔrɔ kuran yɛlɛmaniw fɛ.
6. Ka bɔli tagamasiɲɛw fisaya
Bandi-stop filter min be se ka yɛlɛma, o be don bɔli yɔrɔ la, min be 40 dB ni kɔ di harmoniki 2nan ni 3nan ma. O la, a be se ka kɛ ko nɛgɛjuru min be bɛn ni fanga ye, o b’a to bɔli tagamasiɲɛ ka saniya baarakɛyɔrɔ ka funteni hakɛ bɛɛ la.
Baarakɛcogo yiracogo jɔnjɔnw
O baarakɛcogo la, OCXO ka fɛɛn minw be baara kɛ n’o fɛɛrɛw ye, u be se ka:
-140 dBc/Zizi @ 100 Zizi
-160 dBc/Zz @ kZz 1
-180 dBc/Hz @ 10 kHz
Aplikasiyɔn kɛcogo ɲumanw
O fɛɛrɛw yiriwali b’a to OCXOw be se ka lɔyɔrɔba ta baara nunu na:
Milimɛtiri-ondi fazi sinkronizasiyɔn 5G/6G sigiyɔrɔw la
Signal bɔnsɔn ka ɲɛsin rada dayɛlɛninw ma
Ɲɛyirali min be sɔrɔ sanfɛla sɛgɛsɛgɛrikɛlaw fɛ
lɛrɛ tilannin kantumu jatebɔ sisitɛmu kɔnɔ
Fɛɛrɛw yiriwali cogoyaw
Sisan OCXO fɛɛrɛ be yiriwara ka taga ɲɔgɔndanba la ani ka fanga dɔgɔya. Fɛɛrɛ kuraw i n’a fɔ MEMS-basiginin mikrofuriw ani silisiyɔmu-basigili kristali rezonantɛriw be laada OCXOw ka baarakɛcogo dancɛw kari. Hakilitigiya -dɛmɛlen ka funteni kɔlɔsili algorithme fana y’a daminɛ ka baara kɛ ni fɛn kuraw ye, min b’a to funteni sɛgɛsɛgɛli be se ka kɛ ka ɲɛ ani ka baara daminɛ joona-.
Fɛɛrɛ minw kofɔra ka tɛmɛ, olu ka ɲɔgɔndɛmɛ sababu fɛ, bi OCXOw be se ka fazi mankan baara kɛ min ka surun tewori dan na lamini cogoya gwɛlɛw kɔnɔ, min be se ka la a la ka frekansi sɛrɛkili dɔ di min be se ka la a la ka ɲɛsin fɛɛrɛ kuraw ma.