ACPM-7891 データシートの表示（PDF） - HP => Agilent Technologies

部品番号

コンポーネント説明

メーカー

ACPM-7891

Tri-Band Power Amplifier Module EGSM, DCS and PCS Multi-slot GPRS

HP => Agilent Technologies 

Option A

ACPM-7891 Test Board

Figure 3 shows the schematic for

the ACPM-7891 Test Board

which provides a straightfor-

ward method of testing and

evaluating the ACPM-7891.

External RF sources, power and

Vapc supplies are used.

Option B

Power Control Loop Design

The implementation of a trans-

mitter power control is one of the

most engineering-intensive and

time-consuming aspects of GSM

handset design. It dictates the

correct transmit power level and

burst shaping in a GSM network.

The use of an off-the-shelf power

control IC helps simplify the

engineering effort and shorten

the design cycle time.

The ACPM-7891 PA Control

Board includes the ACPM-7891

PA, Linear Technology

LTC1758-2 power control IC,

EGSM/DCS/PCS directional cou-

plers, tri-band diplexer and a

20-pin interface socket designed

to work with an LTC1758 demo

board from Linear Technology.

EGSM RFin

EGSM Vapc

DCS/PCS RFin

DCS/PCS Vapc

23

C4

26

24

C5

4

C7 C9

7

2

21

C3

18

C8

20

C2

14

C14 C13

11

C11

16

1, 3, 5, 6, 8, 9, 10, 12, 13, 15, 17, 19, 22, 25

Figure 3. Schematic of ACPM-7891 Test Board.

Component

Label

C2

C3

C4

C5

C7

C8

C9

C11

C13

C14

Component

Value

.033 µF

12 pF

220 pF

.033 µF

220 pF

33 pF

.033 µF

33 pF

.033 µF

27 pF

EGSM RFout

Vdd

Gnd

DCS/PCS RFout

14

Share Link: