Isihlukanisi Semvamisa engu-256, Imvamisa Yokufaka engu-0.3 ~ 30GHz

Isihlukanisi semvamisa engu-256 siyimoduli yesekethe yedijithali enciphisa imvamisa yesiginali yokufaka ibe yi-1/256 yemvamisa yayo yokuqala. Izici zayo kanye nezinhlelo zokusebenza zimi kanje:

Izici:
1. I-coefficient enkulu yokuhlukanisa imvamisa
Isilinganiso sokuhlukaniswa kwemvamisa singu-256:1, esifanele izimo ezidinga ukunciphisa okukhulu kwemvamisa, njengokukhiqiza amasignali okulawula imvamisa ephansi avela kumawashi anemvamisa ephezulu.
2. Isakhiwo sesiqhubi samazinga amaningi
Ngokuvamile yakhiwe yizibali ze-binary ezinezinga eli-8 (njengezibali ze-8-bit), njenge-2 ^ 8=256, ama-flip flops amaningi kudingeka ahlukaniswe, okungase kungenise ukubambezeleka kwe-cascading.
3. Umjikelezo womsebenzi wokukhipha
Umjikelezo womsebenzi wokukhipha okuphezulu kakhulu kwe-binary counter elula ingu-50%, kodwa isigaba esiphakathi singase singalingani. Uma kudingeka umjikelezo ogcwele womsebenzi ongu-50%, kudingeka ukucubungula okwengeziwe kwe-logic (njengokuhlanganiswa kwempendulo noma i-frequency chain).
4. Ukuqina okuphezulu
Ngokusekelwe ekwakhiweni kwesekethe yedijithali, inokunemba okuphezulu kwemvamisa yokukhipha, ayithinteki kakhulu yizici zemvelo ezifana nokushisa kanye ne-voltage, futhi incike ekuzinzeni kwesignali yokufaka.
5. Ukusetshenziswa kwamandla okuphansi kanye nokuhlanganiswa
Ubuchwepheshe besimanje be-CMOS busebenzisa amandla aphansi, kulula ukubuhlanganisa ne-FPGA, i-ASIC noma i-microcontroller, futhi buthatha izinsiza ezimbalwa.

Isicelo:
1. Uhlelo lokuxhumana
Ukwenziwa kwemvamisa: Ku-loop ekhiyiwe ngesigaba (PLL), imvamisa eqondiwe ikhiqizwa kanye ne-oscillator elawulwa yi-voltage (VCO); Ukuhlukaniswa kwemvamisa ye-oscillator yendawo (LO) kuzinhlelo zokusebenza ze-RF kukhiqiza amaza amaningi.
2. Ukucutshungulwa kwesignali yedijithali
Ukunciphisa amasampula: Nciphisa izinga lokusampula ukuze unciphise inani ledatha, elisetshenziswa kanye nokuhlunga okulwa nokuhlukanisa.
3. Amadivayisi okulinganisa isikhathi kanye nesikhathi
Kumawashi edijithali kanye nama-timer kagesi, i-crystal oscillator (njenge-32.768kHz) ihlukaniswe ibe yi-1Hz ukuze ishayele ngesandla sesibili.
Ukuqalisa ukubambezeleka noma ukuhlela imisebenzi ngezikhathi ezithile ekulawulweni kwezimboni.
4. Izinsimbi zokuhlola nokulinganisa
Ijeneretha yesignali ikhiqiza izimpawu zokuhlola ezivamise ukuba sezingeni eliphansi noma isebenza njengemojuli yokuhlukanisa imvamisa yokubhekisela yemitha yemvamisa.