UPC8104GR-E1 Ver la hoja de datos (PDF) - NEC => Renesas Technology

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componentes Descripción

Fabricante

UPC8104GR-E1

UP CONVERTER + QUADRATURE MODULATOR IC FOR DIGITAL MOBILE COMMUNICATION SYSTEMS

NEC => Renesas Technology 

EXPLANATION OF INTERNAL FUNCTION

BLOCK

90° PHASE

SHIFTER

FUNCTION/OPERATION

Input signal from Lo1 is send to digital

circuit of T-type flip-flop through frequency

doubler. Output signal from T-type F/F is

changed to same frequency as Lo1 input

and that have quadrature phase shift, 0°,

90°, 180°, 270°. These circuits have

function of self phase correction to make

correctly quadrature signals.

BUFFER AMP.

Buffer amplifiers for each phase signals to

send to each mixers.

µPC8104GR

BLOCK DIAGRAM

from Lo1in

×2

÷ 2 F/F

MIXER

ADDER

Each signals from buffer amp. are

quadrature modulated with two double-

I

balanced mixers.

I

High accurate phase and amplitude inputs

are realized to good performance for

image rejection.

Q

Q

Output signals from each mixers are

added with adder and send to final

amplifier.

to MODout

Data Sheet P10099EJ4V0DS00

7

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