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6.1 概述:

Jan 03, 2016

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leilani-john

高频功率放大器. 6.1 概述:. 6.2 高频功率放大器的工作原理. 6.3 高频功率放大器的动态分析. 6.4 高频功放的高频特性. 6.5 高频功率放大器的电路组成. 6.6 宽带功率放大器与功率合成电路. 6. 1 概述:. i C. 饱和区. •. Q. Q. •. 截止区. I CEO. •. u CE. O. E C. •. •. •. 6.2 高频功率放大器的工作原理. C. + u S -. L. + u b -. - U BB. E C. (a) 原理电路. i c. - PowerPoint PPT Presentation
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  • 6.1 6.2 6.3 6.4 6.5 6.6

  • 6. 1

    (1)

    (2)

    (3)C

    (4)

  • A

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    AB

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    B

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    C

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  • UBZ

    C

    ,

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  • 6.2 +ub-RpCL+uCE-icEC-UBB(b) +uc1--UBBCECL+uS-+ub-(a)

    1

  • (C)

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    1(2)

  • 2 +ub-RpCL+uCE-EC-UBB+uc1-=DD=ceuBEccuigub\ +uBE _

    (1)

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    :

    ,:

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    _998248804.unknown

  • ()BZbmBBccUtUUgi-+-=wcosQ

    (1)

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    _998248799.unknown

    _998248788.unknown

    _1152192775.unknown

  • ic

    _998248787.unknown

    (1)

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    _1000134604.unknown

    _1158566806.unknown

    _1158566810.unknown

    _1158566802.unknown

    _1000134597.unknown

    _998250786.unknown

    (2)

    _998920420.unknown

    _1142347597.unknown

    _1158566772.unknown

    _1158566777.unknown

    _1158566784.unknown

    _1158566767.unknown

    _1142347570.unknown

    _1142347583.unknown

    _1142347564.unknown

    _998250989.unknown

    _998251039.unknown

    _998250964.unknown

  • 3.

    (1)

    _1152194135.unknown

    _1152195200.unknown

    _998252074.unknown

    (2)

    _1152194255.unknown

    _1158570872.unknown

    _998254221.unknown

    _998252313.unknown

    (3)

    _998254102.unknown

    _1152194357.unknown

    _1152195246.unknown

    _1152195255.unknown

    _1152194352.unknown

    _998253947.unknown

    (4)

    _998254033.unknown

    _1152194174.unknown

    _1158570933.unknown

    _998296451.unknown

    EMBED Equation.3

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    _999975082.unknown

    _998254498.unknown

  • 6.3 o

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  • 1 +ub-CLEC-UBB+uc1-Rp+uCE-+uBE _

    1

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  • _999092017.unknown

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    ;

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  • ubemax

    2

    B

    B

    BA

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    1Q

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    (2) A:

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    QA

  • 2 ub

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    3.

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    ,

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  • 2

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    1

    EMBED Equation.3

    EMBED Equation.3

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    2

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  • 3

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    1.

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  • 3

  • UBBIcoIcmlUcm UbmUBBiccic

    2.

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  • 4 UBBUbmUbmUBBuBEmaxic UcmUbmUbm Ubm

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  • 5 ZpCIcoIcmlUcmC ZpIcoIcmlUcm PD=IcoECIcoPo=UcmIcmlcoscosPC

  • 6.4

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  • 6.4f2>f1

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    PF

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    3

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    4

  • 6.4

    1

  • 6.5

    1

    1

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  • 6.5

    ICOIC1ICn

    2

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  • 2

    UBB

    +UBB -

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  • (1) (2) (3) ::

  • L1C1RACA L2C2IA ,Rp 1. (1)

  • (1) L1C1 p L1C1 M pRp

  • (1) ()() k QoQL QLQL10QL10

  • (2) T R2()R1R2 (a) R1C1R2C2R1'= R2' :

  • (2) [] 2WRL=50EC=24Vf=50MHzQ1=10 : R1 Rp ,CoC1CoL1C2C1 (Q1)

  • 4 DE 1. D DD uiub1ub2uLuA ub1ub2uiT1 uiVT1VT2ECCEC-UCES1AuA=EC-UCES1 uiVT2VT1VT2CuA= UCES20 uAEC-2UCESLCRLQic1ic2RL

  • 1

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    nnn

  • +uce-- Ec +-uc2+

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    LC2

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  • 6.61 LCB/ fo

  • 1. (b)LLs1r1Ls2r2 CRL L(c)C (d) LR'LLsCfsfsfs

  • 2.

  • 3. (1) 11 11u1=u2i1=i2usRLRsu1u2 11RL11--

  • 3. u1u1u2u2i2i1i1+ i2(2) 1441 141/4 u1=u2=ui1=i2=i 1413uRLu1+u2=2u1i1+i2=2i

    u1u1u2u22u+

    2u

    -RLRL/414 4141441

  • 3.3.2 , , , , , , 3.3.4

  • , 72, 10 W, , 40W , , ,

  • 4 VHFUHF, , , , M57704MotorolaMHW 3.4.1MotorolaMHW3.4.1

  • MHW, , , , , , , , M57704, , 335 MHz512 MHz(M57704H450 MHz470 MHz), VCC=12.5V, Pin=0.2 W, Zo=ZL=50, Po=13 W, Gp=18.1dB, 35%40%

  • 3.4.2M57704, , LC 3.4.3TW-42 M57704H TW-42, 4577MHz458 MHz, 5W3.4.3, M57704H, , V115LC, V113 V114, V104V105, V103, M57704H, , 138 V

  • 1. , , , , 2. , , , , 3. , (),

  • (), (), , , 4 , , LC,

  • 5 , , , 6 M57704MHW, , , , , , ,