互補(bǔ)型復(fù)合跟隨器構(gòu)成的模擬電感電路和低耗電容倍增器
ANALOGUE INDUCTOR AND LOW-LOSS CAPACITY MULTIPLIER COMPOSED OF COMPLEMENT ARY COMPOSITE FOLLOWER
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摘要: 本文提出了一種用場效應(yīng)晶體管和雙極型晶體管的互補(bǔ)型復(fù)合跟隨器構(gòu)成高Q模擬電感電路和低耗電容倍增器的新方案。這種電感電路和電容倍增器與以往的相比,它們具有電路簡單、只用一組電源、溫度特性可以互補(bǔ)、適于制作低頻段的高感值電感電路和低耗電容倍增器(由于復(fù)合跟隨器輸入阻抗高)等優(yōu)點(diǎn)。文中分析了這種模擬電感電路和低耗電容倍增器的工作原理;找出了模擬電感電路的Q與(角頻率)、Q與r(補(bǔ)償電阻);電容倍增器的Q與r、(電容倍增系數(shù))與r、Re(損耗電阻)與r的關(guān)系;同時(shí)還介紹了這種模擬電感電路和電容倍增器的設(shè)計(jì)方法;并進(jìn)行了實(shí)驗(yàn)驗(yàn)證。最后,導(dǎo)出了這種模擬電感電路的Q值靈敏度的表達(dá)式,給出了這種模擬電感電路應(yīng)用的例子。
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關(guān)鍵詞:
Abstract: A new kind of high Q (quality factor) analogue inductor (L=50 H, Q=98.8) and lowloss (loss resistance Re may approach zero, i.e, Q) capacity multiplier composed of complementary composite follower using field effect and dipolar transistors is proposed.As compared with the analogue inductor and capacity multiplier composed of integrated operational amplifier, the new device has the following features: its circuit is simple, with only one set of supply, more suitable for low frequency large inductor and capacity multiplier, and has complementary temperature characteristics. The working principle of this kind of analogue inductor and capacity multiplier is analysed and the relations between Q and , Q and r (complementary resistance), Re and r are estabilshed. The design of this kind of device is also discussed and verified experimentally, Besides, the expression for the sensitivity of the Q value of the analogue inductor is derived. -
D. F. Berndt and S. C. Dutta Roy, IEEE J, of SC, SC-9 (1969), 61.[2]S. C. Dutta Roy and V. Nagarajan, ibid, SC-5 (1970), 95.[3]張鳳祥,電子學(xué)通訊,4(1982), 270.[4]李遠(yuǎn)文,電子學(xué)報(bào),1979年,第2期,第61頁.[5]井上,高宏,上野文男,電子通信學(xué)會(huì)論文志,J62-C (1979), 848.[6]A. Antoniou, Proc. IEEE, 116 (1969), 1838. -
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