Nneɛma a Ɛyɛ Ahwehwɛ Ho Ahintasɛm a Wɔhwehwɛ Mu
Wɔ ɛlɛtrɔnik wiase no mu ahoɔden a ɛbɔ mu no, crystal oscillator frequency ho hia te sɛ koma a ɛbɔ. Sɛnea eyinom nyinaa bɛyɛ pɛpɛɛpɛ na egyina pintinn no gyina nneɛma a ɛyɛ anwanwade a ɛte sɛ ahwehwɛ no so. Nneɛma a ɛte sɛ ahwehwɛ mu nneɛma te sɛ elastic constants, density, ne atom structure, bom kyerɛ mpɛn dodow a etwa to a crystal oscillator no yɛ. Ɛnnɛ, momma yenhu ahintasɛm a ɛfa sɛnea saa su ahorow yi nya ahwehwɛ oscillator frequency so nkɛntɛnso pɔtee no mu.
Nneɛma Titiriw a Ɛwɔ Nneɛma a Ɛyɛ Ahwehwɛ Ho
1. Nneɛma a Ɛyɛ Elastic Constants
Nneɛma a ɛyɛ ahwehwɛ mu ahoɔden a ɛyɛ den no na ɛkyerɛ sɛnea nneɛma no sɛe bere a wɔde abɔnten tumi ahorow ahyɛ mu no. Dodow a elastic constant no yɛ kɛse no, dodow no ara na ade no deformation no sua wɔ nhyɛso koro no ara ase. Wɔ ahwehwɛ fam no, elastic constants ne wɔn vibration frequency wɔ abusuabɔ tẽẽ. Mpɛn pii no, elastic constants a ɛkorɔn ne vibration frequencies a ɛkorɔn hyia, efisɛ ade no hia ahoɔden pii na ama ayɛ deformation koro no ara wɔ vibration bere mu.
2. Nneɛma a ɛyɛ den
Nneɛma a ɛte sɛ ahwehwɛ a ɛyɛ den no nso ka sɛnea ɛwosow mpɛn dodow. Nneɛma a ɛwɔ density kɛse no wɔ mass kɛse wɔ unit volume biara mu, ma enti egye ahoɔden pii na ama atumi awosow. Eyi taa ma wosow mpɛn dodow a ɛba fam.
3. Atom Nhyehyɛe
Atɔm ahorow nhyehyɛe ne sɛnea nkitahodi ahorow te wɔ ahwehwɛ mu nso ka sɛnea ɛwosow mpɛn dodow. Sɛ nhwɛso no, Si-O nkitahodi a ɛwɔ quartz ahwehwɛ mu no wɔ nkitahodi ahoɔden a ɛkorɔn, a ɛma quartz ahwehwɛ tumi wosow wɔ mpɛn dodow a ɛkorɔn mu. Nea ɛne eyi bɔ abira no, ahoɔden a ɛka bom wɔ dɔte nneɛma mu no taa sua, enti wɔn wosow mpɛn dodow nso sua.
4. Coefficient of Ɔhyew Ntrɛwmu
Coefficient of thermal expansion of crystalline materials kyerɛkyerɛ nsakrae a ɛba nneɛma no kɛse mu bere a ɔhyew no sesa no. Nneɛma a ɛwɔ ɔhyew ntrɛwmu nsusuwii a ɛba fam no ntumi nsɛe pii bere a ɔhyew no sesa no, na ɛboa ma wosow no gyina pintinn na ɛnam so ka wosow mpɛn dodow.
5. Dielectric Nneɛma a Ɛkɔ So Daa
Dielectric constant yɛ honam fam dodow a ɛkyerɛ sɛnea ade bi tumi yɛ mmuae wɔ anyinam ahoɔden mu. Nneɛma a ɛwɔ dielectric constant a ɛkorɔn no taa nya wosow mpɛn dodow a ɛkorɔn, efisɛ wɔn deformation wɔ anyinam ahoɔden mu no yɛ kɛse na ahoɔden pii ho hia na ama wosow akɔ so.
6. Adwennwen a Ɛwɔ Mu
Ebia nhyɛso a ɛwɔ mu no bɛba bere a ahwehwɛ renyin no, na saa nhyɛso ahorow yi bɛka wɔn nhyehyɛe ne wɔn wosow su. Adwennwen a ɛwɔ mu no betumi ama nsakrae aba mpɛn dodow a ahwehwɛ no wosow no mu.
Tɔfabɔ
Sɛ yɛbɛbɔ no mua a, honam fam su ahorow a ɛwɔ ahwehwɛ nneɛma mu, a nea ɛka ho ne elastic constants, density, atom structure, coefficient of thermal expansion, dielectric constant, ne emu nhyɛso, nyinaa bom yɛ nneɛma atitiriw a ɛka crystal oscillator frequency. Wɔn ho wɔn ho wɔ abusuabɔ na wɔbom yɛ adwuma de kyerɛ frequency level ne stability a crystal oscillator no te. Abusuabɔ a ɛda saa nneɛma yi ntam no ntease ho hia kɛse ma nhyehyɛe ne paw nneɛma a ɛfata a ɛte sɛ ahwehwɛ na ama wɔanya frequency signals a ɛyɛ pɛpɛɛpɛ na ɛyɛ den.