PTB20245 데이터 시트보기 (PDF) - Ericsson

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PTB20245

35 Watts, 2.1–2.2 GHz Wide-Band CDMA Power Transistor

Ericsson  

PTB 20245

Test Circuit

e

* Thermally linked to RF device.

Schematic for f = 2.2 GHz

Q1

PTB 20245

NPN RF Transistor

l1, l9

Microstrip 50 Ω

l2

.1 λ 2 GHz

Microstrip 75 Ω

l3

.065 λ 2 GHz

Microstrip 16 Ω

l4

.095 λ 2 GHz

Microstrip 12.5 Ω

l5

.055 λ 2 GHz

Microstrip 9.7 Ω

l6

.055 λ 2 GHz

Microstrip 12.5 Ω

l7

.065 λ 2 GHz

Microstrip 22 Ω

C1, C6

0.1 µF

1206 Chip

C2, C7

10 µF, 35 V SMT Tantalum

C3, C4, C8, C10 20 pF

ATC-100

C5, C9

0–4 pf

Johanson Trimmer

L1

L2, L4

L3

R1

Board

56 nh

SMT Inductor

3 Turn #22, 0.25” O.D.

4 mm.

SMT Ferrite

22 Ω

1206 SMT Resistor

0.031 G-200 Solid Copper Bottom, AlliedSignal

Bias Parts (not shown on layout)

Q2

BCP 56

D1

BAV 99

C10, C11

0.1 pF

R2

2K

R3, R4

10 Ω

SMT NPN Transistor

Diode

SMT Capacitor

Potentiometer

1206 SMT Resistor

Parts Layout (not to scale)

4

5/20/98

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