Application Note 3 NJG1126HB6 W-LAN/WiMAX Application 3. 2.3~2.7GHz BAND APPLICATION 3-1 SUMMARY The characteristics of 2.3~2.7GHz band have evaluated as follows. The evaluation circuit structure and measured data are reviewed. 3-2-1 MEASURED DATA1 (DC) General conditions: VDD=VINV=2.7V, Ta=+25oC, Zs=Zl=50Ω Parameter Symbol Conditions Measurement Unit data Operating Voltage VDD 2.7 V Inverter Voltage VINV 2.7 V Control Voltage (High) VCTL(H) 1.85 V Control Voltage (Low) VCTL(L) 0 V Operating current IDD1 RF OFF, VCTL=1.85V 2.03 mA Operating current IDD2 RF OFF, VCTL=0V 0.04 uA Inverter current IINV1 RF OFF, VCTL=1.85V 81.8 uA Inverter current IINV2 RF OFF, VCTL=0V 14.0 uA Control current ICTL RF OFF, VCTL=1.85V 3.6 uA 1 Application Note 3 NJG1126HB6 3-2-2 MEASURED DATA2 (LNA HIGH GAIN MODE) General conditions: VDD=VINV=2.7V, VCTL=1.85V, fRF=2302.5~2695MHz, Ta=+25oC, Zs=Zl=50Ω with application circuit Measurement Parameter Symbol Conditions Unit data Operating current IDD Small signal gain 2.03 mA Gain 10.4 ~ 11.3 dB Isolation ISO -32.4 ~ -31.8 dB Noise figure NF 1.66 ~ 2.03 dB -3.0 ~ -1.4 dBm -0.7 ~ +1.9 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 1.85 ~ 2.07 RF Output port VSWR VSWRo 1.66 ~ 2.92 3-2-3 MEASURED DATA3 (LNA LOW GAIN MODE) General conditions: VDD=VINV=2.7V, VCTL=0V, fRF=2302.5~2695MHz, Ta=+25oC, Zs=Zl=50Ω with application circuit Measurement Unit Parameter Symbol Conditions data Small signal gain Gain -10.0 ~ -9.3 dB Isolation ISO -10.0 ~ -9.3 dB Noise figure NF 8.8 ~ 9.9 dB +9.7 ~ +10.4 dBm +18.4 ~ +19.1 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 1.38 ~ 1.58 RF Output port VSWR VSWRo 1.25 ~ 1.95 2 Application Note 3 NJG1126HB6 3-3 APPLICATION CIRCUIT (Top View) L2 1.0nH RF IN GND 4 L4 C1 8.2nH 4pF RFOUT RFIN 5 RF OUT 3 R1 1k ohm L1 3.3nH 6 VDD=2.7V C2 1000pF GND GND L3 12nH 2 Bias Circuit VCTL =0V or 1.85V Logic Circuit VCTL 7 VINV 1 GND C3 1000pF 8 VINV=2.7V 1Pin NDEX 3-4 PCB DESIGN (Top View) Parts List Parts ID Comment L1~L4 TDK (MLK0603 Series) VDD R1 C2 RF IN L3 R1 L1 L2 L4 RF OUT C1~C3 0603 size MURATA (GRM03 Series) C1 C3 VCTL VINV PCB (FR-4): t=0.2mm MICROSTRIP LINE WIDTH =0.4mm (Z0=50Ω) PCB SIZE=17.0mm x 17.0mm 3 Application Note 3 NJG1126HB6 3-5-1 TYPICAL CHARACTERISTICS (LNA High Gain Mode) Condition: Ta=+25oC, VDD=VINV=2.7V, VCTL=1.85V, Zs=Zl=50Ω NJG1126HB6 @High Gain Pout vs. Pin NJG1126HB6 @High Gain Gain, IDD vs. Pin (fRF=2500MHz) (fRF=2500MHz) 10 14 8 12 7 0 10 6 8 5 6 4 -5 -10 -15 4 Pout 3 IDD -20 2 -25 2 0 1 P-1dB(IN)=-3.0dBm -30 -40 IDD (mA) 5 Gain (dB) Pout (dBm) Gain -30 -20 -10 P-1dB(IN)=-3.0dBm 0 -2 -40 10 0 -30 -20 Pin (dBm) 0 10 Pin (dBm) NJG1126HB6 @High Gain Pout, IM3 vs. Pin NJG1126HB6 @High Gain OIP3, IIP3 vs. frequency (f1=2500MHz, f2=f1+100kHz) 20 -10 (f1=2200~2800MHz, f2=f1+100kHz, Pin=-32dBm) 16 12 10 14 -20 -40 -60 10 6 8 4 2 6 IIP3 4 IM3 -80 8 OIP3 IIP3 (dBm) 12 Pout OIP3 (dBm) Pout, IM3 (dBm) 0 0 -2 2 IIP3=-0.5dBm -100 -40 -30 -20 -10 0 0 2200 10 2300 2400 Pin (dBm) (f=2300~2700MHz) Gain -4 2800 (f=50MHz~20GHz) 20 12 15 k factor 8 2.5 Gain (dB) 10 3 NF (dB) 2700 NJG1126HB6 @High Gain k factor vs. frequency 14 3.5 2 2600 frequency (MHz) NJG1126HB6 @High Gain NF, Gain vs. frequency 4 2500 10 6 NF 5 4 1.5 (NF : Exclude PCB, Connector Losses) 1 2300 2400 2500 2600 frequency (MHz) 2 2700 0 0 5 10 15 20 frequency (GHz) 4 Application Note 3 NJG1126HB6 3-5-2 TYPICAL CHARACTERISTICS (LNA HIGH GAIN MODE) Condition: Ta=+25oC, VDD=VINV=2.7V, VCTL=1.85V, Zs=Zl=50Ω S11, S22 S21, S12 VSWR Zin, Zout S11, S22 (f=50MHz ~ 20GHz) S21, S12 (f=50MHz ~ 20GHz) 5 Application Note 3 NJG1126HB6 3-5-3 TYPICAL CHARACTERISTICS (LNA Low Gain Mode) Condition: Ta=+25oC, VDD=VINV=2.7V, VCTL=0V, Zs=Zl=50Ω NJG1126HB6 @Low Gain Pout vs. Pin NJG1126HB6 @Low Gain Gain, IDD vs. Pin (fRF=2500MHz) (fRF=2500MHz) -6 0 -8 Gain (dB) Pout (dBm) -10 -20 -30 Pout 80 Gain 70 -10 60 -12 50 -14 40 -16 30 IDD (mA) 10 IDD -40 -18 -50 20 -20 -60 -40 -30 -20 -10 0 10 -22 -40 20 10 P-1dB(IN)=+10.4dBm P-1dB(IN)=+10.4dBm 0 -30 -20 -10 0 10 Pin (dBm) Pin (dBm) NJG1126HB6 @Low Gain Pout, IM3 vs. Pin NJG1126HB6 @Low Gain OIP3, IIP3 vs. frequency (f1=2500MHz, f2=f1+100kHz) 20 20 (f1=2200~2800MHz, f2=f1+100kHz, Pin=-16dBm) 20 22 20 18 16 IIP3 18 Pout -40 -60 14 16 12 14 10 IM3 12 OIP3 8 10 6 8 IIP3 (dBm) -20 OIP3 (dBm) Pout, IM3 (dBm) 0 -80 IIP3=+18.7dBm -100 -40 -30 -20 -10 0 10 4 2200 20 2300 2400 Pin (dBm) (f=2300~2700MHz) 2700 6 2800 NJG1126HB6 @Low Gain k factor vs. frequency -9 -10 12 -11 -12 11 NF 10 -13 9 -14 15 k factor 13 Gain (dB) Gain (f=50MHz~20GHz) 20 -8 14 NF (dB) 2600 frequency (MHz) NJG1126HB6 @Low Gain NF, Gain vs. frequency 15 2500 10 5 -15 8 (NF : Exclude PCB, Connector Losses) 7 2300 2400 2500 2600 frequency (MHz) -16 2700 0 0 5 10 15 20 frequency (GHz) 6 Application Note 3 NJG1126HB6 3-5-4 TYPICAL CHARACTERISTICS (LNA Low Gain Mode) Condition: Ta=+25oC, VDD=VINV=2.7V, VCTL=0V, Zs=Zl=50Ω S11, S22 S21, S12 VSWR Zin, Zout S11, S22 (f=50MHz ~ 20GHz) S21, S12 (f=50MHz ~ 20GHz) 7