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WCDMA手机关键射频指标分析 · sccpch 16个dpdch 扩频码的选取

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Text of WCDMA手机关键射频指标分析 · sccpch 16个dpdch 扩频码的选取

  • WCDMA

    200083-4 200087-8

    MAXIM MAXIM

    MAXIM MAXIM

    MAXIM MAXIM

    WCDMA WCDMAGSM900

  • WCDMA

    WCDMA 1920MHz ~ 1980MHz 1 2 3 4 33dBm 27dBm 24dBm 21dBm -50dBm AGC 34 AGC80dB

    33dB() 43dB() 34 EVM 17.5% 15dB

    1

    CCDF dB

    WCDMACCDF 6DPDCHDPCCH PERCHSCCPCH 16DPDCH

    0 2 4 6 8 1 0

    - 5

    - 4

    - 3

    - 2

    - 1

    0

  • CCDF

    CCDF

  • ACLR ACLR WCDMA3G TS

    25.101 V3.2.2:Adjacent Channel Leakage power Ratio (ACLR) is the ratio of the transmitted power to the power measured in an adjacent channel. Both the transmitted power and the adjacent channel power are measured with a filter that has a Root-Raised Cosine (RRC) filter response with roll-off =0.22 and a bandwidth equal to the chip rate

    ACLRIP3outACLR(dBc)=2 (Pin-IP3in)-7

    WCDMAACLR

  • EVM I Q I Q I QEVMEVM1 EVMEVM2 EVM1~EVM7 EVM

    EVMtotal

    1

    7

    i

    EVMi2

    =

    WCDMA

    WCDMA 2110MHz ~ 2170MHz DPCH_Ec = -117dBm/3.84MHz DPCH_Ec=-44dBm, -25dBm. AGC80dB (ACS)33dB 34 -44dBm -46dBm 10MHz -46dBm 20MHz

    -47dBm/100K-57dBm/100K-60dBm/3.84M

    1GHz~12.75GHz9KHz~1GHz

  • WCDMA

    -117dBm/3.84MHz

    NF

  • WCDMA

    10MHz -46dBm-114dBm 10MHz 3.84MHz PH=46-114-C/I-Ma=-68+18-10=-60dBc/3.84M=-125.8dBc/Hz

    10dB WCDMARF

    WCDMA

    -25dBm DPCH-44dBm 0.1%

    -44-C/I=-44+18=-26dBm 1dB

    1dB-20dBm 1dB-10dBm 20dB MAXIMMAX2561 MAX2652 MAX2653

  • WCDMA

    2-2

    WCDMA-44dBm 3dB 2-2 -108(n)+9(NF)=-99dBm 2-255dB

    WCDMA + IP3

    IP3 LNA+MIXER ACS LNA

    -46dBm 10MHz -46dBm 20MHz 3dB 3dB IP3-19.5dBm

    ACS 5MHz -52dBm,-103dBm14dB, 14dB, KTB+NF+14=-108+9+14=-85dBm -52dBm LNA -90dBm -27dBm,LNAIP3-6.9dBm

    IP3in >0.5 (Pa +2 *Pl-Pm+2.2) Pa Pl Pm 2.2

  • WCDMA/GSM

    MAX2360 MAX2321 LNA MAX2310 MAX4473 GSM

    WCDMA/GSM

    GSM GSM6

    WCDMAGSM

  • WCDMA/GSM

    MAX2360 I/QVGA SSB VAG / VCO

    SSB VCO

    ACPR [email protected]+7dBm 100dB 2.7~5.5V EVM3%

    WCDMA/GSM

    MAX2321

    2.7V~3.6V LNA

    15dB Gain, 1.6dB [email protected] PCS, 1.4dB NF @Cellular, +7dBm IIP3_____HGHL Mode

    0dB Gain, 5dB NF @PCS 4dB NF @Cellular, +14 dBm IIP3 @PCS, +16dBm IIP3 @Cellular_____LGHL Mode

    Mixer 11dB Gain, 11dBNF, 4dBm IIP3, 1dBm P1dBout,

    @PCS band and HGHL/LG Mode 11dB Gain, 11dBNF, 2dBm IIP3, 0dBm P1dBout,

    @PCS band and HGLL Mode

  • WCDMA/GSM

    MAX2310 VGA 2VCO

    VCO FM

    VGA 110dB 40 ~ 300MHz IP1dB 6.4dBm @-35dB Gain

    CDMA Mode IP1dB 38.3dBm @+35dB Gain

    CDMA Mode

    GSM+WCDMA

    FM-

    FM+

    CDMA+

    CDMA-

    VGA

    QOUT+

    QOUT-

    IOUT+

    IOUT-

    /20 90

    CHARGEPUMP

    PHASEDETECTOR

    /R

    /M

    MAX231020

    19

    18

    17

    16

    15

    14

    13

    1

    2

    3

    4

    5

    6

    7

    8

    12

    11

    9

    LNAINH

    RLNA

    LNAOUTL

    LNAOUTH

    GAIN

    LIN

    BAND

    LNAINL

    LOHIN

    LOLIN

    MIXINH

    MIXINL

    RBIAS

    CDMA+

    CDMA-

    BUFFEN

    VCC

    FMOUT

    LOLOUT

    LOHOUT

    x2

    MAX2321

    090

    IF PPL

    RF PPL

    TANK H

    TANK L

    VCCVGC

    VCC

    VCC

    VCC

    1

    2

    3

    4

    5

    6

    7

    8

    9

    10

    11

    12

    36

    35

    34

    33

    32

    31

    30

    29

    28

    27

    26

    25

    242322212019181716151413

    373839404142434445464748

    45 -45

    /2

    /2

    0

    90

    090

    IF PPL

    RF PPL

    TANK H

    TANK L

    VGC

    1

    2

    3

    4

    5

    6

    7

    8

    9

    10

    11

    12

    36

    35

    34

    33

    32

    31

    30

    29

    28

    27

    26

    25

    242322212019181716151413

    373839404142434445464748

    45 -45

    /2

    /2

    090

    CLK DI

    CS

    RBIAS

    MAX2360

    BIAS

    MAX2470

    GND

    PC

    0.1u

    R

    3R

    A3

    SHDN

    A2

    Q1

    A1

    SR1SR2

    SR3

    RG3

    OUT

    VCC

    RSENSE

    RG1RG2

    MAX4473

    TANK600MHz

    TANK400MHz

    WCDMATX VCO

    1620~1680MHz

    WCDMA RxIFSAW 150MHZ

    GSM RxIFSAW 200MHZ

    WCDMA BPF

    GSM BPF

    WCDMA BPF

    GSM BPF

    GSM

    DU

    PLEX

    ER

    WC

    MA

    DU

    PLEX

    ER

    13MHz TCXO

    RF PLL+VCO

    1080~1160MHz

    MAX2

    294

    WCDMAPA29dBm

    GSMPA

    ICCPA=Vpc.RG1

    4 Rsense. RG3

    GSM TxIFSAW 200MHz

    WCDMA Tx IFSAW 300MHz

    VGC

    Fc

    CLK

    DI

    RFEN

    CLKDI

    IFEN

    Ramp Control

    CLK

    DIRxEN

    Iin-

    Iin+

    Qin-

    Qin+GainControl

  • WCDMA/GSM

    WCDMA150MHz WCDMA300MHz GSM200MHz WCDMA1620~1680MHz WCDMA2260~2320MHz GSM1080~1115MHz GSM1125~1160MHz

    GSM MAX2360 WCDMA MAX2360 MAX2360

    GSM VCO WCDMA MAX2360RF VCO WCDMAGSM MAX23212

    GSM SAM WCDMA

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    HFSS

    6 1

    HFSS

    HFSS

    HFSS

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    13.56MHz NFC/RFID

    4 13.56MHz

    13.56MHz

    HFSS CST

    13.56MHz

    13.56MHz

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