超低頻振蕩器 的英文怎麼說

中文拼音 [chāobīnzhèndàng]
超低頻振蕩器 英文
ultra-low frequency oscillator
  • : Ⅰ動詞1 (越過; 高出) exceed; surpass; overtake 2 (在某個范圍以外; 不受限制) transcend; go beyo...
  • : Ⅰ形容詞(次數多) frequent Ⅱ副詞(屢次) frequently; repeatedly Ⅲ名詞1 [物理學] (物體每秒鐘振動...
  • : 動詞1. (搖動; 揮動) shake; flap; wield 2. (奮起) brace up; rise with force and spirit
  • : Ⅰ動詞1 (搖動; 擺動) swing; sway; wave 2 (無事走來走去; 閑逛) loaf; wander; roam; loiter; go a...
  • : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
  1. Research on cmos implementation of wlan transceiver rf front - end is done in this thesis. the transceiver uses the most used super - heterodyne architecture, its rf front - end consists of low noise amplifier, down - converter, up - converter, preamplifier, lo buffer and pll frequency synthesizer

    本論文研究無線局域網收發機射前端的cmos實現,該收發機採用外差式的拓撲結構,其射前端主要由噪聲放大、下變、上變、末前級、本地信號緩沖和鎖相環型率合成等模塊組成。
  2. At present the manufacture of surface acoustic wave use the technology of the final submicron. a series of the devices of low insertion loss, high q saw rayleigh surface acoustic wave resonators or stws that insertion loss has less than 5db, load quality factor ( ql ) is more than 1000 on the quartz piezoelectric with zero of first temperature factor in the research. these difference frequencies are 60mhz, 280mhz, 739mhz and 1ghz of normal frequency and at also surface acoustic wave. using 1. 25db noise factor amplifier, careful design curcuit, good setting printed curcuit board, and using the 1ghz surface transverse wave resonator as frequency element, researching the low phase noise surface acoustic wave with sideband phase noise near ? 120dbc / hz deviating 1khz on carrier, spurious suppress with 80db

    本研究採用一階溫度系數為零的壓電石英基片上製作出損耗小於5db 、有載品值因素( ql值)過1000的一系列損耗、高q值聲表面波rayleigh波或stw諧率分別為60mhz 、 280mhz 、 739mhz和1ghz等不同率的高性能聲表面波諧。並採用噪聲系數為1 . 25db的噪聲系數放大,精心設計電路,優化設計布置印製電路板,用標稱率為1ghz的聲表面波諧率控制元件,製作出在偏離載1khz處的單邊帶相位噪聲近- 120dbc / hz 、雜波抑制達80db以上的相位噪聲聲表面波
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