ST TDR020V1 User Manual
STEVAL-TDR020V1
Portable UHF 2-way radio demonstration board based on the PD84006L-E
Features
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Excellent thermal stability |
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Frequency: 740 - 950 MHz |
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■ Supply voltage: 7.2 V |
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■ Output power: 4 W |
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■ Power gain: 12.3 ±0.3 dB |
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Efficiency: 50 % - 57 % |
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Load mismatch 20:1 |
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BeO free amplifier |
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Mechanical specification: |
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Description |
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L = 60 mm, W = 30 mm |
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The STEVAL-TDR020V1 demonstration board is |
Table 1. |
Device summary |
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a portable UHF 2-way radio designed as a |
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Order code |
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platform for evaluating the performance of the |
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PD84008L-E LDMOS RF power transistor. |
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STEVAL-TDR020V1 |
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October 2010 |
Doc ID 18108 Rev 1 |
1/11 |
www.st.com
Contents |
STEVAL-TDR020V1 |
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Contents
1 |
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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2 |
Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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3 |
Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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4 |
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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5 |
Circuit photo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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6 |
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
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2/11 |
Doc ID 18108 Rev 1 |
STEVAL-TDR020V1 |
Electrical characteristics |
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1 Electrical characteristics
T = +25 oC, V |
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= 7.2 V, I |
dq |
= 200 mA |
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A |
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Table 2. |
Electrical specification |
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Symbol |
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Test conditions |
Min |
Typ |
Max |
Unit |
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Freq |
Frequency range |
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740 |
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950 |
MHz |
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POUT |
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4 |
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W |
Gain |
@ PIN = 24 dBm |
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12.3 |
±0.3 |
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dB |
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ND |
@ PIN = 24 dBm |
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50 - 57 |
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% |
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H2 |
2ND Harmonic @ P = 24 dBm |
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-48 |
/ -65 |
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dBc |
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IN |
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H3 |
3RD Harmonic @ PIN = 24 dBm |
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/ -70 |
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dBc |
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VSWR |
Load mismatch all phases @ POUT = 4 W |
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20:1 |
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Doc ID 18108 Rev 1 |
3/11 |
Impedance |
STEVAL-TDR020V1 |
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2 Impedance
Figure 1. Impedance graphic
D
ZDL
ZIN
ZGS
G
S
Table 3. |
Impedance data |
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F(MHz) |
ZGS |
ZDL |
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740 |
2,52 + j1,42 |
3,06 + j0,41 |
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750 |
2,52 + j1,56 |
3,09 + j0,51 |
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760 |
2,51 + j1,73 |
3,12 + j0,64 |
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770 |
2,46 + j1,84 |
3,13 + j0,72 |
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780 |
2,47 + j1,96 |
3,13 + j0,81 |
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790 |
2,48 + j2,07 |
3,13 + j0,87 |
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800 |
2,45 + j2,22 |
3,14 + j0,96 |
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810 |
2,44 + j2,27 |
3,08 + j1,02 |
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820 |
2,45 + 2,43 |
3,05 + j1,04 |
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830 |
2,41 + j2,57 |
3,04 + j1,11 |
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840 |
2,40 + j2,67 |
2,98 + j1,14 |
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850 |
2,41 + j2,80 |
2,99 + j1,24 |
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860 |
2,38 + j2,92 |
2,91 + j1,29 |
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870 |
2,37 + j3,06 |
2,88 + j1,38 |
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880 |
2,36 + j3,20 |
2,81 + j1,40 |
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890 |
2,37 + j3,25 |
2,70 + j1,47 |
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900 |
2,31 + j3,36 |
2,56 + j1,53 |
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910 |
2,25 + j3,49 |
2,50 + j1,62 |
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920 |
2,16 + j3,57 |
2,31 + j1,72 |
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930 |
2,16 + j3,66 |
2,21 + j1,82 |
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940 |
2,11 + j3,78 |
2,11 + j1,96 |
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950 |
2,06 + j3,86 |
1,98 + j2,07 |
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4/11 |
Doc ID 18108 Rev 1 |
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