Qualcomm and Teleepoch
Enter Into a 3G CDMA Subscriber Unit License Agreement, October
6, 2007
MTN chooses Cambridge Broadband
Networks for multi-service wireless network in Rwanda, October 6,
2007
Brazilian government to
publish 3G bidding rules soon, October 6, 2007
KTF 3G service suffers
from technical problems, October 6, 2007
Argentina’s Personal
lunches 3G service in Rosario, October 6, 2007
Russia has it's first 3G
network, October 6, 2007
AT&T could drop Alcatel-Lucent
as 3G mobile network supplier, October 6, 2007
Enea Extends License Agreement
with ZTE for 3G Handsets, October 2, 2007
LG to unveil premium handsets
in Brazil, October 2, 2007
KTF 3G subscribers doubled
in less than 3 months, October 2, 2007
3G policy in India will
be non-uniform, October 2, 2007
- previous news
|
|
Skyworks achieves breakthrough WCDMA power amplifier module performance
September 16, 2003
Skyworks Solutions, a wireless semiconductor company focused on radio
frequency (RF) and complete cellular system solutions, announced a pair
of WCDMA power amplifier (PA) modules that enable breakthrough performance
for 3G handset applications. WCDMA is a 3G mobile wireless technology
that allows users to send and receive voice, images and data at speeds
of up to 2 Mbps.
Skyworks' new WCDMA PA modules include the SKY77152, a high-efficiency,
fully matched PA, and the revolutionary SKY77404 Load Insensitive Power
Amplifier (LIPA) module, which delivers full RF performance even into
an output load-mismatch of 4:1 voltage standing wave ratio (VSWR).
"As carriers finalize their 3G deployment strategies, Skyworks'
new PA modules will give handset manufacturers the flexibility to use
a single PA solution across a broader range of frequency bands,"
said Klaus Buehring, Skyworks' vice president of Power Amplifier products.
"Additionally, our new LIPA modules can meet the stringent RF performance
requirements of WCDMA transmission even under high load-mismatch conditions,
a unique capability that enables phone designers to eliminate power-consuming
isolator circuitry, which significantly reduces cost and board space while
dramatically increasing talk time."
Skyworks' SKY77152 is a fully matched 10-pin surface mount WCDMA PA module
with the company's proven dual-stage bias control for optimum efficiency
in high and low power modes. The SKY77404 LIPA model is a 16-pin product
that delivers full RF performance under severe load-mismatch. Like the
SKY77152, the SKY77404 PA module features a low current control (Vcont)
pin to maximize power efficiency in both high and low RF power ranges,
and a separate bias control (V BIAS) pin that can be directly connected
to the battery, allowing the battery supply voltages (VCC1 and VCC2) to
be operated as low as 0.8V and enabling significantly extended talk times.
Further, the SKY77404 supports handset manufacturers to use a single
PA to span multiple frequency bands. The same product can be used in both
the 1920 MHz-1980 MHz IMT-2000 band and the 1850 MHz-1910 MHz PCS band.
This product leverage will be especially advantageous for larger handset
OEMs, ODMs and contract manufacturers targeting European, Asian and North
American markets.
Both the SKY77152 and the SKY77404 PA modules are packaged in Skyworks'
low-cost 4mm x 4mm x 1.5mm laminate-based Multichip Module (MCM) packages
containing all active circuitry including onboard bias circuitry as well
as input and output interstage matching. The devices are manufactured
using Skyworks' industry-leading single-chip 50 GHz gallium arsenide (GaAs)
heterojunction bipolar transistor (HBT) process technology with an indium
gallium phosphide (InGaP) emitter, which provides for all positive-voltage
DC supply operation while maintaining the highest power efficiency and
excellent linearity.
Samples of the SKY77152 and SKY77404 are available now. The SKY77152
is currently in production, and the SKY77404 will begin shipping in mass
production by the end of this year. Pricing is $1.75 per unit for the
SKY77152 and $2.25 per unit for the SKY77404 in OEM volumes of 10,000.
|
3G Motorola A920
