PTB20190 View Datasheet(PDF) - Ericsson

Part Name

Description

Manufacturer

PTB20190

175 Watts, 470–806 MHz Digital Television Power Transistor

Ericsson  

e

Typical Characteristics

IMD vs. Frequency

-30

-35

-40

Pout = 125 W(PEP)

-45

VCC = 28 V

-50

470 525 580 635 690 745 800

Frequency (MHz)

Test Circuit

PTB 20190

Block Diagram for f = 800 MHz

Q1

l1, l2

l5, l6

l3, l4

l7, l8

l9, l10

l11, l12

l13, l14

l15, l16

l17, l18

T1, T2

PTB 20190

.0280 λ 800 MHz

.0522 λ 800 MHz

.0654 λ 800 MHz

.0632 λ 800 MHz

.0652 λ 800 MHz

.0652 λ 800 MHz

.0300 λ 800 MHz

.0250 λ 800 MHz

.0454 λ 800 MHz

UT85-25

5/11/98

NPN RF Transistor

Microstrip 18.5 Ω

Microstrip 18.5 Ω

Microstrip 70 Ω

Microstrip 10.2 Ω

Microstrip 8 Ω

Microstrip 9 Ω

Microstrip 11.5 Ω

Microstrip 60 Ω

Microstrip 18.5 Ω

Balun

C1, C2

5.1 pF

C3, C12, C8, C20 10 µF, 35 V SMT Capacitor

C4, C7, C19, C16

0.1 µF

C5, C6, C17, C18, C21, C22

75 pF

C9, C10

0-10 pF

C11

0-20 pF

R1, R2

15 Ω, 1/4 W

FB

4 mm.

SMT Ferrite

L1, L3

12 nh

SMT Inductor

L2, L4

68 nh

SMT Inductor

Circuit Board

.031 G-200, Solid Copper Bottom

3

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