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ECO7806

Philips
Part Number ECO7806
Manufacturer Philips
Description WideBand Linear Power Amplifiers
Published Mar 13, 2006
Detailed Description APPLICATION NOTE Wide-band linear power amplifiers (470 − 860 MHz) with the transistors BLW32 and BLW33 ECO7806 w w ...
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ECO7806
ECO7806


Overview
APPLICATION NOTE Wide-band linear power amplifiers (470 − 860 MHz) with the transistors BLW32 and BLW33 ECO7806 w w w t a .
D S a e h U 4 t e .
c m o w w w .
D a S a t e e h U 4 t m o .
c Philips Semiconductors Wide-band linear power amplifiers (470 − 860 MHz) with the transistors BLW32 and BLW33 CONTENTS 1 2 3 3.
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1 ABSTRACT INTRODUCTION THEORETICAL CONSIDERATIONS The equivalent circuit of the transistor input and output of the BLW32 and BLW33 The output networks The input networks THE SINGLE AMPLIFIERS WITH BLW32 AND BLW33 Practical considerations Practical optimization method Measured results COMBINED AMPLIFIER WITH BLW32 AND BLW33 Practical considerations Measured results CONCLUSIONS REFERENCES RECOMMENDATIONS LIST OF COMPONENTS BLW32 amplifiers BLW33 AMPLIFIER PRINTED-CIRCUIT BOARDS 1/16 INCH PFTE DOUBLE CU CLAD BLW32 AND BLW33 AMPLIFIERS Application Note ECO7806 1998 mar 23 2 Philips Semiconductors Wide-band linear power amplifiers (470 − 860 MHz) with the transistors BLW32 and BLW33 1 ABSTRACT Application Note ECO7806 For application in T.
V.
transposers for band IV/V (470 − 860 MHz) some wideband linear power amplifiers have been made with the BLW32 and BLW33.
A single stage amplifier with BLW32 gave a minimum output power of 380 mW peak sync.
at a 2-tone i.
m.
d.
of −47 dB.
The power gain was 11.
4 ±0.
55 dB.
A similar amplifier with the BLW33 produced a minimum output of 790 mW peak sync.
at the same i.
m.
d.
and a power gain of 10.
4 ±0.
85 dB.
A 2-stage amplifier with the BLW32 as driver and BLW33 in the output showed a minimum output power of 750 mW peak sync.
at −47 dB i.
m.
d.
with an overall power gain of 22.
5 ±2 dB.
2 INTRODUCTION This report describes the theoretical aspects and practical realisation of some wide-band UHF power amplifiers for TV transposer service in bands IV and V (470 − 860 MHz).
The amplifiers are designed with the BLW32 and BLW33 transistors.
These devices are in...


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