STEVAL-TDR017V1 Demonstration board using the PD84001 for UHF RFID reader and 2-way radio Features ■ Excellent thermal stability ■ Frequency: 860 - 960 MHz ■ Supply voltage: 7.2 V ■ Output power: 1 W ■ Power gain: 14.6 ± 0.4 dB ■ Efficiency: 51 % - 53 % ■ Load mismatch: 20:1 ■ BeO-free amplifier Mechanical specification: L = 60 mm, W = 30 mm Description The STEVAL-TDR017V1 is a demonstration board using the PD84001 LDMOS transistor. It is designed for UHF RFID reader and 2-way radio applications. October 2010 Table 1. Doc ID 18091 Rev 1 Device summary Part number STEVAL-TDR017V1 1/8 www.st.com 8 Contents STEVAL-TDR017V1 Contents 1 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2/8 Doc ID 18091 Rev 1 STEVAL-TDR017V1 1 Electrical characteristics Electrical characteristics TA = +25 oC, VDD = 7.2 V, Idq = 50 mA Table 2. Symbol Freq Electrical specifications Test conditions Frequency range Min Typ 860 POUT Max Unit 960 MHz 1 W Gain @ PIN = 16 dBm 14.6 ± 0.4 dB ND @ PIN = 16 dBm 51 - 53 % H2 2nd harmonic @ PIN = 16 dBm -44 / -47 dBc H3 3rd harmonic @ PIN = 16 dBm -51 / -57 dBc VSWR Load mismatch all phases @ POUT =1 W Doc ID 18091 Rev 1 20:1 3/8 Impedance 2 STEVAL-TDR017V1 Impedance Figure 1. Impedance illustration D ZDL Z ZGS IN G S Table 3. 4/8 Impedance data F(MHz) ZGS ZDL 860 4,36 + j1,91 5,67 - j0,89 870 4,41 + j2,00 5,58 - j0,69 880 4,46 + j2,07 5,52 - j0,43 890 4,48 + j2,15 5,41 - j0,20 900 4,51 + j2,19 5,32 + j0,03 910 4,53 + j2,22 5,26 + j0,25 920 4,57 + j2,30 5,203 + j0,47 930 4,51 + j2,31 5,07 + j0,68 940 4,53 + j2,34 5,05 + j0,93 950 4,53 + j2,34 4,99 + j1,13 960 4,49 + j2,34 4,92 + j1,31 Doc ID 18091 Rev 1 STEVAL-TDR017V1 Test circuit 3 Test circuit Figure 2. Test circuit schematic Vcc 1 + MSub 2 - R3 B2 B1 C3 FR4 H=20 mil C1 R2 L1 C2 R1 TL5 TL6 RFin TL 1 C4 C6 Table 4. TL2 TL3 C7 C8 TL7 C10 C9 C5 RFout C11 TL4 LDMOS PD84001 Part list Component ID Description B1 Value Case size Manufacturer Part code Ferrite Bead Panasonic EXCELDRC35C B2 Ferrite Bead Panasonic EXCELDRC35C C1, C2 Capacitor 120 pF 0603 Murata GRM39-C0G121J50D500 C3 Capacitor 1 µF 0603 Murata GRM39-X5R105K16D52K C4, C5 Capacitor 39 pF 0603 Murata GRM39-C0G390J50D500 C6 Capacitor 2.7 pF 0603 Murata GRM39-C0G2R7C50Z500 C7 Capacitor 6,8 pF 0603 Murata GRM39-C0G6R8D50Z500 C8 Capacitor 15 pF 0603 Murata GRM39-C0G150J50D500 C9 Capacitor 10 pF 0603 Murata GRM39-C0G100D50D500 C10 Capacitor 2.7 pF 0603 Murata GRM39-C0G2R7C50Z500 C11 Capacitor 1 pF 0603 Murata GRM39-C0G010C50Z500 L1 Inductor 12.55 nH Coilcraft 1606-10 R1 Resistor 510 Ω R2 Potentiometer 10 KΩ R3 Resistor 1K 0603 Tyco lectronics Bourns electronics 3214W-1-103E Tyco electronics 01623440-1 0603 Doc ID 18091 Rev 1 5/8 Test circuit Table 4. STEVAL-TDR017V1 Part list (continued) Component ID Description Case size TL1 Transmission line W = 0.92mm L = 12,6 mm TL2 Transmission line W = 0.92mm L = 3,55 mm TL3 Transmission line W = 0.92mm L = 2,55 mm TL4 Transmission line W = 0.92mm L = 1,8 mm TL5 Transmission line W = 0.92mm L = 3.1 mm TL6 Transmission line W = 0.92mm L = 8,8 mm TL7 Transmission line W = 0.92mm L = 6,4 mm RF in, RF out SMA-CONN PD84001 LDMOS Board Figure 3. 6/8 Value 50 Ω Manufacturer Part code JOHNSON 142-0701-801 STMicroelectronics PD84001 60 mils FR-4 THk=0.020" 2OZ Cu both sides Demonstration board photo Doc ID 18091 Rev 1 STEVAL-TDR017V1 4 Revision history Revision history Updated Table 5. Document revision history Date Revision 11-Oct-2010 1 Changes Initial release. Doc ID 18091 Rev 1 7/8 STEVAL-TDR017V1 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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