october 2010 doc id 18091 rev 1 1/8 8 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 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. table 1. device summary part number STEVAL-TDR017V1 mechanical specification: l = 60 mm, w = 30 mm www.st.com
contents STEVAL-TDR017V1 2/8 doc id 18091 rev 1 contents 1 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
STEVAL-TDR017V1 electrical characteristics doc id 18091 rev 1 3/8 1 electrical characteristics t a = +25 o c, v dd = 7.2 v, i dq = 50 ma table 2. electrical specifications symbol test conditions min typ max unit freq frequency range 860 960 mhz p out 1w gain @ p in = 16 dbm 14.6 0.4 db nd @ p in = 16 dbm 51 - 53 % h2 2nd harmonic @ p in = 16 dbm -44 / -47 dbc h3 3rd harmonic @ p in = 16 dbm -51 / -57 dbc vswr load mismatch all phases @ p out =1 w 20:1
impedance STEVAL-TDR017V1 4/8 doc id 18091 rev 1 2 impedance figure 1. impedance illustration table 3. impedance data f(mhz) z gs z dl 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 z dl z in g d s z gs
STEVAL-TDR017V1 test circuit doc id 18091 rev 1 5/8 3 test circuit figure 2. test circuit schematic rf in c4 tl 1 c6 c7 r2 r3 c1 r1 tl2 tl3 tl4 c8 tl5 tl6 tl7 pd84001 ldmos c11 c5 rfout c2 c9 vcc 2 - 1 + fr4 h=20 mil msub b2 l1 c10 c3 b1 table 4. part list component id description value ca se size manufacturer part code b1 ferrite bead panasonic exceldrc35c b2 ferrite bead panasonic exceldrc35c c1, c2 capacitor 120 pf 0603 murata grm39-c0g121j50d500 c3 capacitor 1 f 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 ? 0603 tyco lectronics r2 potentiometer 10 k ? bourns electronics 3214w-1-103e r3 resistor 1 k 0603 tyco electronics 01623440-1
test circuit STEVAL-TDR017V1 6/8 doc id 18091 rev 1 component id description value ca se size manufacturer part code 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 50 ? 60 mils johnson 142-0701-801 pd84001 ldmos stmicroelectronics pd84001 board fr-4 thk=0.020" 2oz cu both sides table 4. part list (continued) figure 3. demonstration board photo
STEVAL-TDR017V1 revision history doc id 18091 rev 1 7/8 4 revision history updated table 5. document revision history date revision changes 11-oct-2010 1 initial release.
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