Suangtuahna
Selectivity sang tak, stability sang tak, leh insertion loss hniam tak a neih avangin Crystal Filter hian tunlai communication system-ah hian thlak danglam theih loh hmun a chang a ni. He thuziak hian crystal filter-te hnathawh dan bulpui leh structural characteristics a tarlang a, wireless communication, radio leh television, leh radar system-a communication subsystem-a an hman dan tlangpui thlirletna a ngaihtuah a, a tawpah chuan an hmasawnna kalphung leh an hmachhawn tur harsatnate a sawiho a ni.
1. Thuhmahruai
Electronic communication system hrang hrangah chuan filter hi signal processing-a thil pawimawh tak a ni a, frequency band mamawh thlan nan leh noise leh interference tihtawp nan hman a ni. Communication spectrum a tam chhoh zel avangin filter performance atan thil mamawh sang zawk siam a ni.
2. Crystal Filter hnathawh dan leh a nihna
2.1 Hnathawh dan tur
Crystal filter hian quartz crystal piezoelectric effect leh mechanical resonance characteristic hmangin frequency selectivity a nei thei a ni. Quartz crystal hian frequency bik pakhatah resonant response sang tak a nei a, chu resonance hian circuit design hmangin band-pass emaw band-stop filter a siam thei a, chu chu frequency band engemaw zat chhunga signal awmte dik taka filter chhuah emaw, tihtawp emaw nan hman a ni.
2.2 A nihna bulpui ber
Q-factor sang: Quartz crystal quality factor hi 104~106 thleng a sang thei a, hei hi LC circuit pangngai aiin a sang zawk hle a;
High selectivity: Bandwidth tawi tak chhungah a filter tha thei a, precision intermediate frequency (IF) screening atan a tha a;
Frequency stability tha: Temperature leh hunin a nghawng tlem zawk a, communication system-te hun rei tak-a stability a tichiang a;
Size tenau leh rintlakna sang: Embedded system leh high-density integrated circuit tan a tha.
3. Communication Field-a Crystal Filter hman dan
3.1 Wireless hmanga inbiakpawhna hmanrua
Radio transceiver-ah chuan crystal filter hi intermediate frequency level (10.7 MHz ang chi) signal filtering stage-ah hman a ni nasa hle. A hmanna tlangpui chu:
Single-Sideband (SSB) communication: Image frequency leh spurious signal te tihtawp nan hman a ni a;
Amateur radio: Sensitivity tihsan nan channel mamawh chu chiang taka gating;
Mobile communication: GSM leh CDMA ang chi system-a intermediate frequency receiving module hmasa ber ang chi te.
3.2 Satellite leh Radar hmanga inbiakpawhna
Radar leh satellite ground station system-ah chuan crystal filter hi receiving channel-a front-end filtering module-ah hman a ni fo a, a bik takin intermediate frequency filtering leh pulse compression system-ah chuan anti-interference leh resolution tihchangtlunna kawngah hmun a chang a ni.
3.3 Radio leh Television te
Amplitude modulation (AM) leh short-wave broadcast receiver-ah chuan intermediate frequency amplification stage-ah crystal filter hman a ni a, hei hian channel spacing identification tha tak leh adjacent frequency suppression performance a pe thei a, sound clarity a ti tha thei a ni.
3.4 Sipai lam nena inbiakpawhna
Environment adaptability leh stability tha tak a neih avangin crystal filter hi tactical radio, encrypted communication, leh guidance system-ah te hman a ni nasa hle a, hei hian thuruk sang tak leh rintlakna sang tak mamawh phuhruk nan a hmang a ni.
4. Crystal Filter hman dan tlangpui
Communication system-a crystal filter-te hnathawh frequency lian ber ber engemaw zat:
Crystal Filter Frequency hman tlanglawn tak tak:
|
Dilna tur Scenario a ni |
Common Center-ah hian a awm fo thin |
Hrilhfiahna |
|
FM/AM broadcast dawngtu a ni |
10.7 MHz a ni |
FM radio-ah hman a ni nasa hle a, filtering precision leh linearity atan a mamawhna a sang hle |
|
Inbiakpawhna tlangpui dawngtu |
21.4 MHz a ni |
High-end communication equipment-a hman tlanglawn tak intermediate frequency, multi-mode modulation method leh frequency sang zawk conversion atana hman tlak |
|
Satellite/radar hmanga siam a ni |
70 MHz (Intermediate Frequency, IF) a ni a, a man pawh a tlawm hle. |
High-performance communication link-a intermediate frequency filter frequency hman tlanglawn tak, digital down-conversion nena hman dun a hman tlangpui |
|
Industrial/sipai frequency band hmanga siam chhuah a ni |
1.40 MHz a ni |
Special frequency point hi system design mamawh angin siam a ni a, hei hi sipai inbiakpawhna leh industrial monitoring system-ah hmuh tur a awm tlangpui |
5. Thutawp
Crystal filter te hian communication field-ah hmun pawimawh tak an luah a, a bik takin intermediate frequency signal processing-ah an thawk tha em em a ni. Technology thar lo chhuahnaah chuan an application field te chu high-frequency band thenkhatah thlak theih ni mahse, precision communication leh high-reliability system-ah chuan thlak danglam theih loh hlawkna an la nei tho. Nakin lawkah chuan material tihchangtlunna, micro-packaging, leh integrated circuit technology inzawmkhawmna hmangin crystal filter hian communication system-ah hmun pawimawh tak a chang chhunzawm zel dawn a ni.
Thil hman tur bik (walkie-talkie chi khat, radar system, etc.) atana mamawh i neih chuan HANGJING hian frequency matching bik emaw, customized service emaw a pe thei che a ni. Kan HANGJING technical emaw sales staff te chu engtik lai pawhin zawhfiah theih reng a ni.
