May 1991

9

Philips Semiconductors

Product specification

UHF power transistor

BLT53

Fig.11 Input impedance (series components) as a

function of frequency, typical values.

handbook, halfpage

400

3

2

1

0

440

480

Zi

(

Ω)

ri

xi

520

MCD199

f (MHz)

Fig.12 Load impedance (series components) as a

function of frequency, typical values.

handbook, halfpage

−4

400

440

ZL

(

Ω)

RL

XL

480

520

4

2

−2

0

MCD200

f (MHz)

Fig.13 Definition of transistor impedance.

handbook, halfpage

MBA451

Zi

ZL

Fig.14 Power gain as a function of frequency,

typical values.

handbook, halfpage

400

440

Gp

(dB)

480

520

10

0

2

MCD201

8

6

4

f (MHz)