4G射频功率放大器的高效率宽频带包络跟踪电源调制器

项目来源

香(略)资(略)金(略)C(略)

项目主持人

P(略) (略) (略)g(略)n(略)

项目受资助机构

T(略)H(略) (略)g(略)i(略)s(略) (略)S(略)n(略)a(略)T(略)n(略)g(略)

立项年度

2(略)

立项时间

未(略)

项目编号

6(略)1(略)

研究期限

未(略) (略)

项目级别

省(略)

受资助金额

7(略)0(略)0(略)

学科

E(略)t(略)a(略)l(略)r(略)c(略)g(略)e(略)g

学科代码

未(略)

基金类别

G(略)r(略)R(略)a(略) (略)d

关键词

未(略)

参与者

未(略)

参与机构

未(略)

项目标书摘要:在无(略)功率放大器通常工作(略)保证调制精度。对於(略)偏置电流和电源电压(略)功率成正比。对於B(略)源电压保持恒定,而(略)电流成正比。因此,(略),其效率随着输出功(略)(Pout/Pou(略)降低,而对於B类R(略)着(Pout/Po(略)的降低而降低。AB(略)两者之间。然而如果(略)率动态变化,则功率(略)高。       (略)源电压控制可以将功(略)以上。但是爲了同时(略)效率和高线性度要求(略)率宽频带的电源调制(略)换器都可用於电源调(略)线性稳压器的效率非(略)变换器则很难实现三(略)。许多现有的动态电(略)应用,比如信号带宽(略)z的EDGE,CD(略)。新兴的4G高数据(略)AX,采用先进的O(略)方案的基带信号的带(略)其PAR(峰值和平(略)dB之间。    (略)设计具有动态电压控(略)源调制器。电源调制(略)Hz,与此同时工作(略)为了同时实现高效率(略)转换器将是一个很好(略)效率的开关转换器可(略)的大部分功率,而线(略)压差稳压器)则提供(略)的设计采用滞环控制(略)这项研究中,我们提(略)如,线性辅助开关转(略)

Applicati(略): In wire(略)ications,(略)plifiers (略) operated(略)ss-A or C(略)e in orde(略)ve modula(略)cy.For a (略)power amp(略)DC curren(略)ge are ke(略),and its (略)is propor(略)he output(略)a Class-B(略)mplifier,(略)voltage i(略)tant whil(略)rrent is (略)l to the (略)urrent.Th(略)ass-A RF (略)he effici(略)ses in pr(略) P_out/P_(略)ile for a(略) amplifie(略)iency dec(略)roportion(略)_out(max)(略)fficiency(略)-AB RF am(略)s in betw(略)alues,and(略)roved gre(略) supply v(略)ges dynam(略)ccordance(略)utput pow(略)Some exis(略)s showed (略)ss of pow(略)rs can be(略) two time(略)y dynamic(略)tage cont(略),a high-e(略)ideband s(略)ator is n(略)hieve bot(略)ciency an(略)arity for(略)er amplif(略)near regu(略)switching(略) could be(略)upply mod(略) efficien(略)ear regul(略)y poor wh(略)ut voltag(略)ile a swi(略)erter is (略)ult to ac(略)p bandwid(略)mes of th(略)ndwidth.M(略)existing (略)ply biasi(略)are restr(略)rrowband (略)s such as(略)and WCDMA(略)al bandwi(略)he order (略)or a few (略)rging 4G (略)ate appli(略)h as LTE (略)e baseban(略)ndwidth i(略)s 20 MHz (略)(peak-to-(略)io)is abo(略)dB for th(略)OFDM modu(略)me.      (略)e to stud(略)n high-ef(略)deband su(略)tors with(略)pply volt(略).The band(略)e supply (略)hould be (略)20MHz wit(略)y near or(略)o achieve(略)efficienc(略)bandwidth(略)ssisted s(略)nverter w(略)ood candi(略)s archite(略)witching (略)s used to(略)t of the (略)ned withi(略)o medium (略)ange,whil(略)r regulat(略) low drop(略)or)suppli(略)r the hig(略) range.Ex(略)gns eithe(略)steretic-(略)l or volt(略)ntrol.In (略)ch,we pro(略)lore new (略)hods,for (略)ear-assis(略)ng conver(略)urrent-mo(略)

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