Radiation a madung mayak mahkak ni-Hkrak ai Crystal Oscillators ni: Ionizing Dose yawng hte langai lang na mabyin masa ni hpe sung sung sawk sagawn ai lam
Hkrang: Radiation makau grup yin hta Crystal Oscillator ni a laklai ai mayak mahkak ni
Electronic system ni a "myit masin" hku nna magam gun nga ai Crystal oscillators ni gaw, n-gun ja ai-n-gun ja ai makau grup yin ni hta laklai ai mayak mahkak ni hpe hkrum sha nga ai. Shanhte a madung daw ni-piezoelectric crystals hte hkrak tup ai oscillation circuits-ni gaw radiation hpe n bung ai hku bai htang ai, raitim, dai akyu ni gaw hpang jahtum e ahkyak ai bungli galaw ai lam masat masa: frequency stability hta dan dawng wa ai. Radiation a akyu ni hpe madung hku nna lahkawng hku garan nna, Total Ionizing Dose (TID) a akyu ni hpe loi loi hte hkra machyi shangun ai lam hte Single-Event Effects (SEEs) a majaw akajawng sha byin pru wa ai hkra machyi lam ni hpe garan ginhka da ai.
Daw I: Ionizing Dose yawng a akyu ni-Crystal Oscillator ni a "Galaw ai asak kaba wa ai lam"
1.1 Crystal hkum nan hpe shinggyin la lu ai hkra machyi lam
TID effects gaw ionizing radiation hpe aten galu-hkap la ai majaw n-gun shinggyin ai majaw byin pru wa ai rai nna, quartz crystals ni hpe hkra machyi ai lam madung lahkawng byin shangun ai:
Lattice n kaja ai lam ni a rawt jat galu kaba wa ai lam
• Radiation gaw crystal kata na shara htawt sit ai lam hpe shabyin ya nna, atom ni hpe shanhte a lattice shara kaw na shara htawt sit kau ya ai.
• Aten ladaw ni na wa ai hte maren, n-gun n rawng ai shara ni, lapran na atom ni hte kaga n kaja ai lam ni law law hpawng de wa ai.
• Ndai n-gun kya ai lam ni gaw, n-gun n-gun n-htum ai (mass-loading effects ni hpe galai shai kau ya ai.
• Direct impact: Resonant frequency hta hkrang shapraw ai galai shai ai lam ni hte frequency-hkum hkrang n-gun atsam hpe galai shai shangun ai lam ni.
Npu hte lapran shara ni hta charge shinggyin la lu ai lam
• Ionizing radiation gaw kristal ntsa hte electrode lapran na shara ni hta ngang grin ai charge ni hpe shabyin ya ai.
• Charge shinggyin la lu ai majaw, nsen n-gun garan pru wa na matu lamu ga jarit masa ni hpe galai shai kau ya ai.
• Acoustic wave ni a garan pru ai lam sum ai lam hte bra ayai ai lam hpe jat ya ai.
• Laksan hkra machyi ai lam: Quality factor (Q) yawm mat nna, phase nsen galaw ai lam hpe hkra machyi shangun ai.
1.2 Oscillation Circuit ni hpe loi loi hte jahten kau ai lam
Radiation n-gun jat wa ai hte maren, n-gun rawng ai hte n-gun n rawng ai daw ni gaw hkrat sum mat ai:
Active jak ni hta parameter galai mat ai
• MOSFET n-gun n-gun ni hta hkrang shapraw ai lam gaw, n-gun n-gun n-gun ni a bias point hpe galai shai kau ya ai.
• Transistor a n-gun yawm mat ai gaw loop gain margin hpe shayawm ya ai.
• Direct impact: Oscillation hpe galaw hpang na matu yak hkak ai, pru wa ai amplitude hpe shayawm kau ai, grai sawng ai masa hta gaw oscillation hpe jahkring kau ai.
Leakage ya aten hta Exponential jat wa ai
• Oxide trap charge ni a majaw PN junction ni hte gate oxide ni hta hka lim ai lam law wa ai.
• Static power jai lang ai lam grai law wa ai.
• Thermal nsen law wa ai gaw phase nsen npu hpe sharawt ya ai.
• Direct impact: N-gun lang ai lam gaw, masat da ai hta jan nna, nsen npawt nhpang rawt jat wa ai.
Htai tsun ai lam a network masat masa ni hta galai shai ai lam ni
• Radiation- hpe hkam sha chye ai n-gun atsam hte n-gun atsam ni hpe galai shai shangun ai.
• Oscillation galaw na matu ra ai phase shift masa ni hpe galai shai ya ai.
• Direct hkra machyi ai lam: Centre frequency hta galai shai ai lam ni hte tuning range hpe shayawm ai lam ni byin chye ai.
Daw II: Langai -Mabyin masa a akyu ni-Crystal Oscillators ni a "Kalang ta myit masin n-gun yawm mat ai"
2.1 Crystal Unit hpe hkrak hkrak hkra machyi shangun ai
Kalang ta shara htawt sit ai majaw hkra machyi ai lam
• N-gun kaba ai-particle langai mi (ga shadawn, n-gun ja ai ion (sh) n-gun ja ai-proton) gaw, dai kristal kata hku lai wa ai.
• Particle lam hkawm ai shara hta localized lattice hkra machyi ai lam hpe shabyin ya ai.
• Kalang lang na buga ginra hta myit ru myit tsang lam galai shai ai lam ni hpe byin shangun ai.
• Direct impact: Kalang ta frequency rawt jat wa ai, dai hpang daw mi bai hkam kaja wa chye ai.
Charge jahkrat ai akyu ni
• Particles ni gaw crystal kata de charge hpe bang da nna, aten kadun laman na wan n-gun ni hpe shabyin ya ai.
• Charge hpe piezoelectric effect hku nna aten kadun na matu n-gun atsam de galai shai kau ya ai.
• Direct hkra machyi ai lam: Phase jumps hte grai sawng ai aten kadun -frequency n-gun hpe hkra machyi shangun ai.
2.2 Oscillation Circuit ni hpe kalang ta jahten kau ai lam
Analog Circuit ni hta byin ai lam langai sha (SETs)
• N-gun kaba ai n-gun n-gun ni gaw oscillator core kata na amplifier (sh) bias circuit ni hpe hkra ai.
• Power (sh) signal line ni hta aten kadun laman na pulse ni hpe shapraw ya ai.
• Pulse a galu kaba ai lam gaw picosecond shi kaw nna microsecond law law du hkra rai nga ai.
• Teng sha hkra machyi ai lam:
• Kalang ta byin pru wa ai glitches ni hpe pru wa ai waveform ntsa e shingdaw tawn da ai.
• Phase matut manoi ai lam hpe akajawng sha jahkring kau ai.
• Phase-locked loops (PLLs) ni hpe lock sum mat ai (sh) ahkying aten hpe n mai lang hkra galaw ya lu ai.
Langai -Mabyin masa n kaja ai lam (SEUs) hpe hkang zing ai masa hta
• Bit flips ni gaw digital hkang ai daw ni hta byin pru wa ai (ga shadawn, frequency hkang ai register ni, mode hkang ai ga si ni).
• Configuration hpe n chye ai sha galai shai kau ai.
• Teng sha hkra machyi ai lam:
• Shapraw ai frequency gaw n jaw ai manu de lung wa ai.
• Operating mode ni hpe n tara ai hku galai shai ai lam.
• Kaja wa bungli galaw lu na matu bai gram lajang ra na re.
Langai -Mabyin Latch-up (SEL) a majaw byin pru wa ai tsin-yam tsindam akyu ni
• Parasitic PNPN structure ni hpe trigger galaw ai gaw, -ya aten na lam hpe shabyin ya ai.
• Current gaw grai law hkra rawt jat wa ai (normal value hta na htam 100 daram du hkra byin mai ai).
• Teng sha hkra machyi ai lam:
• Circuit a bungli hpe tsep kawp hkrat sum mat ai.
• Thermal runaway gaw prat tup hkra machyi shangun chye ai.
• Hkamja wa na matu power cycling galaw ra ai.
Daw III: Crystal Oscillator ni a matu laksan ngang kang hkra galaw ai ladat ni
3.1 TID a akyu ni hpe ninghkap na matu laksan ladat ni
Crystal arung arai ni hpe kaja dik htum lata la ai lam
• Radiation-hkum tsup ai nlung ni hpe lang u: SC-cut quartz gaw AT-cut hta grau kaja ai radiation hpe ninghkap lu ai atsam hpe madun dan ai.
• Laksan galaw ai ladat ni: Hydrogen annealing gaw shawng nnan na crystal n kaja ai lam ni hpe shayawm ya lu ai.
• Arung arai nnan ni hpe tam sawk sagawn ai lam: Lithium niobate (LNB) zawn re ai kaga ladat ni gaw, frequency band nkau mi hta ga sadi jaw ai lam hpe madun nga ai.
N-gun ja ai Circuit hkrang shapraw ai lam
• Radiation-hkum tsup ai ladat ni hte galaw shapraw ai semiconductor jak ni hpe jai lang na.
• N-gun n-gun yawm mat ai hpe shi hkrai shi gram lajang lu na matu redundant bias circuit ni hpe galaw na.
• Parameter drift ranges kata hta bungli galaw lu na matu hkam sharang ai hkrang hpe jai lang na.
• Leakage current hpe yu reng ai hte htingnut ai circuit ni hpe hpawng de na.
Hkrang shapraw ai lam hpe grau kaja hkra galaw ai
• Radiation-hkam sha ai arung arai ni hpe n jai lang lu hkra, crystal packaging hpe grau kaja hkra galaw na.
• Interface charge shinggyin ai lam hpe shayawm lu na matu electrode design hte matut mahkai ladat ni hpe grau kaja hkra galaw na.
• Ntsa lam hpe shayawm na matu laksan coatings ni hpe bang na.
3.2 Langai -Mabyin masa a akyu ni a matu laksan hparan ladat ni
Circuit htingnu gawgap ai lam-madang makawp maga ai lam
• Ahkyak ai analog signal lam ni hta, hka ja ai hte hka ja ai circuit ni hpe jai lang na.
• Digital hkang zing ai daw ni a matu, masum lang na modular redundancy (TMR) hte aten kadun laman bai gram lajang ai lam ni hpe galaw sa wa na.
• Lawan ai hku mu tam lu ai hte bai gram lajang lu ai ladat ni hpe hkrang shapraw na.
• Configuration data hpe shut ai lam hpe mu tam ai hte gram lajang ai code ni hte makawp maga na.
Layout Design hpe grau kaja hkra galaw ai
• Hkamja lam hte seng ai node ni grup yin hta sin langa ring ni hpe bang na.
• Gradient hkra machyi ai lam hpe shayawm na matu, n-gun rawng ai -centroid layout ni hpe lang u.
• Latch-up hkam sha lam hpe shayawm na matu power garan gachyan ai network ni hpe grau kaja hkra galaw na.
• Hkrak ai charge hpe sharawt na matu ahkyak ai transistor ni a kaba ai hpe jat ya ra ai.
System-Madang ninghkap ai lam ni
• Hka lum ai hpe madi shadaw ya ai redundant multi-oscillator htingnu ni hpe hkrang shapraw na.
• Real-time frequency hpe yu reng ai lam hte anomaly hpe sawk sagawn ai lam hpe galaw sa wa na.
• Kalang lang byin wa ai akyu ni hpe chye na lu na matu hte gram lajang lu na matu, htuk manu ai algorithms ni hpe gyin shalat na.
• Parameter hpe bai gram lajang ai hte mara ni hpe bai gram lajang ai lam ni lawm ai on-orbit hpe gram lajang ai ladat ni hpe gawgap na.
3.3 Chyam dinglik ai lam hte hkam la ai lam a matu laksan ra kadawn ai lam ni
Crystal Oscillator ni a matu nhtoi htoi ai hpe chyam dinglik ai ladat ni
• TID npu hta hkrat sum ai lam ni hpe jep joi na matu, aten galu-frequency stability hpe yu reng ai lam.
• Real-time shadawn nna, aten kadun laman na hkra machyi ai lam ni a lata masat ni hpe mu lu na matu, phase nsen hpe shadawn ai.
• In-beam chyam dinglik ai lam gaw, langai lang-byin ai lam a akyu ni a tengman ai akyu hpe shingdaw na matu re.
• Aten galu-kam mai ai lam hpe tau hkrau tsun na matu lawan ai hku asak chyam dinglik ai lam galaw ai.
Chyam dinglik na matu ahkyak ai masa lam ni
• Frequency offset hte total dose lapran na matut mahkai lam ni hpe yu ai.
• Phase nsen spectra ni hta galai shai ai lam ni.
• Start-up aten hte settling aten hpe hkra machyi shangun ai.
• Hprawng wa ai waveform hpe n-gun jaw lu ai atsam.
Ngut nna: Rap ra ai lam hte kaja dik htum ai lam hpe galaw na matu Systems Engineering ladat langai
Radiation hpe n-gun ja hkra galaw ai gaw, madang law law hta hpaga yumga galaw ra ai system engineering a mayak mahkak langai rai nga ai:
Arung arai hte galaw sa wa ai lam ni hpe rap ra hkra galaw ai
• Crystal arung arai ni a radiation hpe ninghkap lu ai atsam hte frequency n-gun n-gun n-rawng ai lapran hta hpaga yumga galaw ai.
• Semiconductor process a n-gun ja ai lam hpe n-gun jai lang ai lam hte lawan ai lam hpe rap ra hkra galaw ai.
Circuit hkrang shapraw ai hta hpaga yumga -
• Redundancy kaw na kam hpa mai ai lam ni hte shingdaw yang, grau sawng ai lam ni hte n-gun jai lang ai lam ni law wa ai.
• Manu jahpu hte galu kaba ai lam ni hpe ninghkap ai makawp maga ladat ni a n-gun hpe rap ra hkra galaw ai.
System htingnu gawgap ai lam hpe grau kaja hkra galaw ai
•-madang law law na makawp maga masing ni hpe jawm galaw ai.
• Hardware-software mara-hkam sharang ai ladat ni hpe hpawng de ai lam.
• Online hku nna yu reng ai lam hte htuk manu ai hku galai shai lu ai atsam ni hpe bang da ai.
Hpang jahtum, awng dang ai radiation-hardened oscillator design hpe galaw na matu, laksan jai lang ai makau grup yin hpe hkrak chye na ra ai hte, bungli galaw ai lam, kam hpa mai ai lam, manu jahpu ni hpe atsawm sha myit yu ra ai. Arung arai nnan ni, ladat ni, hpaji rawng ai htingnut ai lam ni hta rawt jat wa ai hte maren, grai sawng ai nhtoi htoi ai makau grup yin hta crystal oscillator ni a bungli galaw ai lam gaw matut nna rawt jat wa na rai nna, sung ai lamu ga sawk sagawn ai lam hte nuclear n-gun zawn re ai -kam hpa mai ai lam tsaw ai application ni a matu grau ngang kang ai aten-base foundation hpe jaw ya na re.
Ndai yaw shada ai hku sawk sagawn ai hte ngang kang hkra galaw ai ladat gaw, grai sawng ai radiation makau grup yin hta pyi, dai system a "myit masin n-gun" hpe ngang grin ai hte kam mai ai hku naw nga lu hkra galaw ya ai.