Application Note 1 NJG1126 W-LAN/WiMAX Application 1. 2.4GHz BAND APPLICATION 1-1 SUMMARY The characteristics of 2.4GHz band have evaluated as follows. The evaluation circuit structure and measured data are reviewed. 1-2-1 MEASURED DATA1 (DC) General conditions: VDD=VINV=2.85V, Ta=+25oC, Zs=Zl=50Ω Parameter Symbol Conditions Measurement Unit data Operating Voltage VDD 2.85 V Inverter Voltage VINV 2.85 V Control Voltage (High) VCTL(H) 1.85 V Control Voltage (Low) VCTL(L) 0 V Operating current IDD1 RF OFF, VCTL=1.85V 2.31 mA Operating current IDD2 RF OFF, VCTL=0V 0.04 uA Inverter current IINV1 RF OFF, VCTL=1.85V 89.8 uA Inverter current IINV2 RF OFF, VCTL=0V 16.1 uA Control current ICTL RF OFF, VCTL=1.85V 3.4 uA 1 Application Note 1 NJG1126 1-2-2 MEASURED DATA2 (LNA HIGH GAIN MODE) General conditions: VDD=VINV=2.7V, VCTL=1.85V, fRF=2450MHz, Ta=+25oC, Zs=Zl=50Ω with application circuit Measurement Parameter Symbol Conditions Unit data Operating current IDD Small signal gain 2.21 mA Gain 15.5 dB Isolation ISO -28.5 dB Noise figure NF 1.39 dB -8.5 dBm +2.3 dBm Pin at 1dB compression point Input 3rd order intercept point RF OFF Exclude PCB/Connector losses (0.11dB) P-1dB(IN) IIP3 f1=fRF, f2=fRF+100kHz, Pin=-32dBm RF Input port VSWR VSWRi 1.87 RF Output port VSWR VSWRo 2.08 1-2-3 MEASURED DATA3 (LNA LOW GAIN MODE) General conditions: VDD=VINV=2.7V, VCTL=0V, fRF=2450MHz, Ta=+25oC, Zs=Zl=50Ω with application circuit Measurement Parameter Symbol Conditions data Unit Small signal gain Gain -6.9 dB Isolation ISO -6.9 dB Noise figure NF 6.7 dB +10.2 dBm +19.7 dBm Pin at 1dB compression point Input 3rd order intercept point Exclude PCB/Connector losses (0.11dB) P-1dB(IN) IIP3 f1=fRF, f2=fRF+100kHz, Pin=-16dBm RF Input port VSWR VSWRi 1.34 RF Output port VSWR VSWRo 1.12 2 Application Note 1 NJG1126 1-3 APPLICATION CIRCUIT (Top View) L2 1.8nH GND 4 RFIN RFOUT 5 RF IN L4 4.3nH C1 4pF 3 RF OUT L3 1.0nH L1 2.7nH VDD=2.7V GND GND 6 2 C2 1000pF Bias Circuit VCTL=0V or 1.85V Logic Circuit VCTL 7 VINV 1 GND VINV=2.7V C3 1000pF 8 1 Pin INDEX 1-4 PCB DESIGN (Top View) Parts List Parts ID L1~L3 RF IN L1 L2 VCTL L4 C3 VDD L4 C2 L3 C1~C3 C1 VINV Comment TAIYO-YUDEN (HK1005 Series) MURATA (LQW15A Series) MURATA (GRM15 Series) RF OUT PCB (FR-4): t=0.2mm MICROSTRIP LINE WIDTH =0.4mm (Z0=50Ω) PCB SIZE=17.0mm x 17.0mm 3 Application Note 1 NJG1126 1-5-1 TYPICAL CHARACTERISTICS (LNA HIGH GAIN MODE) NJG1126HB6 @High Gain Gain, IDD vs. Pin NJG1126HB6 @High Gain Pout vs. Pin 40 20 20 Gain (dB) Pout (dBm) P-1dB(OUT)=+6.2dBm 0 -10 15 30 10 20 Pout P-1dB(IN)=-8.5dBm IDD (mA) Gain 10 10 5 -20 IDD P-1dB(IN)=-8.5dBm -30 -40 -30 -20 -10 0 0 0 -40 10 -30 -20 -10 0 10 Pin (dBm) Pin (dBm) Condition VDD=VINV=2.7V, VCTL=1.85V fRF=2450MHz, Ta=+25oC, Zs=Zl=50ohm Condition VDD=VINV=2.7V, VCTL=1.85V fRF=2450MHz, Ta=+25oC, Zs=Zl=50ohm NJG1126HB6 @High Gain OIP3, IIP3 vs. frequency NJG1126HB6 @High Gain Pout, IM3 vs. Pin 20 21 8 20 7 19 6 18 5 OIP3=+17.9dBm -20 OIP3 (dBm) Pout, IM3 (dBm) Pout -40 -60 17 OIP3 4 3 16 IIP3 (dBm) 0 IIP3 15 2 14 1 IM3 -80 IIP3=+2.3dBm -100 -40 -30 -20 -10 Pin (dBm) Condition VDD=VINV=2.7V, VCTL=1.85V fRF=2450+2450.1MHz, Ta=+25oC, Zs=Zl=50ohm 0 10 13 2350 2400 2450 2500 2550 0 2600 frequency (MHz) Condition VDD=VINV=2.7V, VCTL=1.85V fRF=2350~2600MHz, Offset=+100kHz Pin=-32dBm Ta=+25oC, Zs=Zl=50ohm 4 Application Note 1 NJG1126 1-5-2 TYPICAL CHARACTERISTICS (LNA HIGH GAIN MODE) NJG1126HB6 @High Gain NF, Gain vs. frequency 5 18 4.5 17 Gain 16 3.5 15 3 14 2.5 13 2 Gain (dB) NF (dB) 4 12 NF 1.5 11 (Exclude PCB, Connector Losses) 1 2350 2400 2450 2500 2550 10 2600 frequency (MHz) Condition VDD=VINV=2.7V, VCTL=1.85V fRF=2350~2600MHz, Ta=+25oC, Zs=Zl=50ohm 5 Application Note 1 NJG1126 1-5-3 TYPICAL CHARACTERISTICS (LNA HIGH GAIN MODE) Condition: Ta=+25oC, VDD=VINV=2.7V, VCTL=1.85V, Zs=Zl=50Ω S11, S22 VSWRi, VSWRo Zin, Zout S21, S12 6 Application Note 1 NJG1126 1-5-4 TYPICAL CHARACTERISTICS (LNA HIGH GAIN MODE) Condition: Ta=+25oC, VDD=VINV=2.7V, VCTL=1.85V, Zs=Zl=50Ω S11, S22(f=50MHz~20GHz) S21, S12(f=50MHz~20GHz) NJG1126HB6 @High Gain k factor vs. frequency 20 k factor 15 10 5 0 0 5 10 15 20 frequency (GHz) Condition VDD=VINV=2.7V, VCTL=1.85V fRF=50MHz~20GHz, Ta=+25oC, Zs=Zl=50ohm 7 Application Note 1 NJG1126 1-5-5 TYPICAL CHARACTERISTICS (LNA LOW GAIN MODE) NJG1126HB6 @Low Gain Gain, IDD vs. Pin NJG1126HB6 @Low Gain Pout vs. Pin 200 0 10 P-1dB(OUT)=+2.6dBm 0 150 Gain -20 100 -10 IDD (uA) -10 Gain (dB) Pout (dBm) -5 -30 50 -15 Pout IDD -40 P-1dB(IN)=+10.2dBm P-1dB(IN)=+10.2dBm -50 -40 -30 -20 -10 0 10 -20 -40 20 0 -30 -20 -10 0 10 20 Pin (dBm) Pin (dBm) Condition VDD=VINV=2.7V, VCTL=0V fRF=2450MHz, Ta=+25oC, Zs=Zl=50ohm Condition VDD=VINV=2.7V, VCTL=0V fRF=2450MHz, Ta=+25oC, Zs=Zl=50ohm NJG1126HB6 @Low Gain Pout, IM3 vs. Pin NJG1126HB6 @Low Gain OIP3, IIP3 vs. Pin 20 OIP3=+12.9dBm 15 25 14 24 13 23 Pout -40 -60 -80 IM3 12 OIP3 22 21 11 20 10 IIP3 9 19 8 18 IIP3 (dBm) -20 OIP3 (dBm) Pout, IM3 (dBm) 0 IIP3=+19.7dBm -100 -40 -30 -20 -10 0 Pin (dBm) Condition VDD=VINV=2.7V, VCTL=0V fRF=2450+2450.1MHz, Ta=+25oC, Zs=Zl=50ohm 10 20 7 2350 2400 2450 2500 2550 17 2600 frequency (MHz) Condition VDD=VINV=2.7V, VCTL=0V fRF=2350~2600MHz, Offset=+100kHz Pin=-16dBm Ta=+25oC, Zs=Zl=50ohm 8 Application Note 1 NJG1126 1-5-6 TYPICAL CHARACTERISTICS (LNA LOW GAIN MODE) NJG1126HB6 @Low Gain NF, Gain vs. frequency 13 -5 Gain -6 11 -7 10 -8 9 -9 8 -10 NF 7 Gain (dB) NF (dB) 12 -11 6 -12 (Exclude PCB, Connector Losses) 5 2350 2400 2450 2500 2550 -13 2600 frequency (MHz) Condition VDD=VINV=2.7V, VCTL=0V fRF=2350~2600MHz, Ta=+25oC, Zs=Zl=50ohm 9 Application Note 1 NJG1126 1-5-7 TYPICAL CHARACTERISTICS (LNA LOW GAIN MODE) Condition: Ta=+25oC, VDD=VINV=2.7V, VCTL=0V, Zs=Zl=50Ω S11, S22 VSWRi, VSWRo Zin, Zout S21, S12 10 Application Note 1 NJG1126 1-5-8 TYPICAL CHARACTERISTICS (LNA LOW GAIN MODE) Condition: Ta=+25oC, VDD=VINV=2.7V, VCTL=0V, Zs=Zl=50Ω S11, S22(f=50MHz~20GHz) S21, S12(f=50MHz~20GHz) NJG1126HB6 @Low Gain k factor vs. frequency 20 k factor 15 10 5 0 0 5 10 15 20 frequency (GHz) Condition VDD=VINV=2.7V, VCTL=0V fRF=50MHz~20GHz, Ta=+25oC, Zs=Zl=50ohm 11