PANASONIC TX21S4TF
Instrukcja Serwisowa

Philips Semiconductors

30 W class-AB ampli�er with the BLV2045 for 1930 � 1990 MHz (PCS)

Application Note AN98023

MBK418

40 handbook, halfpage PL (W) 30

1900 MHz 20

1990 MHz

10

0 0 2 4 6 Pi (W) 8

VCE = 26 V; Icq = 80 mA.

Fig.4 Output power as a function of input power; typical values.

MBK419

handbook, halfpage

10 Gp

1900 MHz 1990 MHz

(dB) 8

6

4

2

0 0 10 20 30 PL (W) 40

VCE = 26 V; Icq = 80 mA.

Fig.5 Power gain versus output power; typical values.

1998 Mar 23

7