Question

Why is the RF (AC) voltage of an oscillating IMPATT diode sinusoidal, while the RF (AC) current waveform is not? c. d. hat are the two most popular substrate materials for monolithic microwave integrated circuits? What characteristics make them particularly useful?

Answer 1

C) hren 이 higherd lectnic ield RF 七 Elechon dritt Hele dis lance (amer movement 4わ1M pATT diod e ci Charge (arrie mevement- a, ithin e Once the Curriers hovebeen generted, device anly on -ve reishonce to generat and sushain an asiuaion. . This efect sc ur only in device aㅏ AC.thaf is bro ugat absut by phase 寸hat are seen at rhe diferences t requin( applied , the current peoks are 6-und .ishen4c signal Tri), occors coz ot inyection delay , and a trans( time delay a the current carrier migrote or rift ac ross the device Tnjrotan Phest Deay with E, incre, e, no. 아 Carrier also increasR Even atten. the E has reache d its peak冫arrie α continue to grow a a reoult ot no. carries alread in eris temce , Thin continues undi.(亡Sallo belous a Crthe al valme when the no-잉 ca m'em starb to fou tr

. As a result odtwㅅ efect there ', a phone tag so-that- the curren+'^ about ga. be hind the wo itage b so Most papular substrate materiats-foc i) Slicon Germanium (SiGe;itsa Si-based Compouned Semiconductor tech nolog Iransloe than Conventio nal Similar Cest advantaye ofermg high- speed Siicon devices ut with Gaslium Nitride (Ga)a 0ed option tor MMiCs Ga transistors Can operate at much highar temyerture and work at much higher voltages than Gats transis to cu hey make ideal power amplitier at microwave segenis .MMICs were ortginay fabricated uing usiny galli um aisenide a- As

$?mid=&wid=51824&sid=&tid=7930&rid=LOADED$$?mid=&wid=51824&sid=&tid=7930&rid=BEFORE$$?mid=&wid=51824&sid=&tid=7930&rid=FINISH$