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1SV232_

RF Manual 16th edition

NXP Semiconductors. 

2. Focus applications, products & technologies

2.1 Wireless communication infrastructure

2.1.1 Build a highly efficient signal chain with RF components for transmit line-ups and receive chains

As a global leader in RF technology and component design, NXP Semiconductors offers a complete

portfolio of RF products, from low- to high-power signal conditioning that delivers advanced performance

and helps simplify your design and the development process. Our solutions range from discrete devices to

modular building blocks, so you can design a highly efficient signal chain.

State-of-the-art QUBiC4

NXP’s industry-leading QUBiC4 technology, available since

2002, has been widely deployed in the field and offers

more consistent parameter performance compared to GaAs

technology. It speeds the migration from GaAs to silicon and

delivers more functionality in less space. High integration

reduces the design footprint and enables more cost-

competitive designs. It also improves reliability and offers

significant savings in manufacturing expenditures.

Application diagram of base station

(all cellular standards and frequencies)

The block diagram below shows base station transmit (upper

part, Tx) and receive (lower part, Rx) functions, and includes

the Tx feedback function (middle part, Tx feedback).

Digital

Front

End

DPD

CFR

DUC

DDC

Dual

DAC

I

PLL

VCO

IQ-Modulator

DVGA RF-BP MPA

0

90

Power Amplifier

HPA

Q

JEDEC

IF

ADC

Transmitter

IF-SAW DVGA Mixer+LO

Att.

LO

RF-SAW

Dual

ADC

BP or LP

Dual

DVGA

IF-SAW

Dual

Mixer

PLL

VCO

LNA Filter Unit

Tower -

Mounted

Amplifier

Tx

LNA +VGA

Rx µC

LNA+VGA

TX / RX1

RX2

Clock

Generator

Jitter Cleaner

Data Converter RF Small Signal

RF Power

Micro Controller

Digital wideband VGAs with high linearity & flexible

current settings

These 6-bit digital VGAs (BGA7204 & BGA7210) offer high

linearity (35 dBm @ 2.2-2.8 GHz) and high output power

(23 dBm @ 2.2-2.8 GHz) across a large bandwidth without

external matching. Smart routing with no connection crosses

simplifies design and decreases footprint by 25%.

42

NXP Semiconductors RF Manual 16th edition

The unique power-save mode can effectively reduce the current

consumption in TDD systems up to 45%. The BGA7210 adds

flexible current distribution across its two amplifiers, depending

on the attenuation state, to save current.

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