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1999-09-09 SAW filters in CDMA mobile communication networks
Surface Acoustic Wave (SAW) filters are used in the intermediate frequency (IF) filtering stage for both the Code Division Multiple Access (CDMA) handset and infrastructure. They are preferred over other types of filter technologies because SAW filters demonstrate high performance yet low cost and small size. This paper describes the evolution of SAW designs to meet the challenging demands of reducing the size and cost for CDMA IF filters.
1999-09-09 SAW filters for wireless communications
This paper describes the recent development in wireless industry and a variety of SAW filter technologies used in wireless communication systems, such and TDMA, GSM, and CDMA with focus on IF filtering. IF SAW filters developed for future third generation (3G) wireless communication systems, such as WCDMA and CDMA2000, are also introduced in this paper.
2005-08-24 Samsung develops complete DVB-H solution
Samsung Electronics Co. Ltd has developed a digital video broadcasting for handhelds (DVB-H) front-end chipset.
2000-06-09 RFIC Components for Cordless Phones
This technical note discusses a highly integrated two-device chipset that has been designed for cordless phones operating in the 915MHz ISM-band using direct-sequence spread-spectrum modulation.
2002-12-24 Qualcomm transceiver supports GSM, UMTS
Qualcomm Inc. has announced the availability of its radioOne RTR6250 transceiver/transmit IC, which supports dual-mode, quad-band GSM transceiver operations (GSM 850/900/1800/1900) and UMTS transmit operation for 1.9GHz and 2.1GHz.
2002-12-17 Qualcomm CDMA chipset has GPS capability
The company's radioOne ZIF CDMA single-band chipset, consist of RF transmit and RF receive processors.
2004-12-01 Predicting sensitivity of ASK receivers
Here's a step-by-step method on predicting sensitivity of an RF chip ASK receiver in various remote keyless systems.
2016-03-17 Passive mixer operates as up-down converter at 2 to 14 GHz
Capable of DC to 6 GHz, Linear Technology's LTC5548 supports wideband transmitters, microwave applications, LTE-advanced wireless services, radar systems, satellite modems and RF test equipment.
2003-07-15 NEC GPS chipset targets mobile apps
The uPD77534 device from NEC Electronics Corp. is an ARM7 TDMI-based System LSI for signal processing that is fabricated on 0.15?m process.
2007-06-28 Meeting T3R4 requirements in TD-SCDMA handsets using the MAX2392
This application note provides techniques and guidelines for timing the MAX2392 setting changes to meet T3R4 requirements in the TD-SCDMA standard.
2007-03-01 Measure true ATPG performance improvements
This article evaluates how ATPG fault efficiency, runtime and pattern count can be matched during multiple executions to achieve a comparison between different ATPG tools or different versions of the same tool.
2002-05-31 Maxim transmitter has on-chip sigma-delta fractional-N synthesizer
The MAX2150 broadband RF transmitter IC from Maxim Integrated Products integrates an on-chip sigma-delta fractional-N synthesizer that has up to 28 bits of fractionalization, allowing 100mHz frequency resolution over 700MHz to 2.3GHz.
2002-06-07 Maxim satellite tuner ICs occupy 6-by-6mm footprint
The MAX2116 and MAX2118 satellite tuner ICs from Maxim Integrated Products integrate a complete satellite receiver front end and VCOs into a 6-by-6mm QFN package.
2002-05-07 Linear Tech RF chipset operates down to 1.8V
Linear Technology Corp.'s 1.8GHz to 2.7GHz RF transceiver chipset operates from 1.8V to 5.25V, and suitable for use in 802.11b-compliant and non-compliant 802.11 systems in the 2.4GHz ISM band.
2003-12-16 Linear Tech demodulator eyes portable apps
A monolithic IF quadrature demodulator from Linear Technology Corp. operates with a single supply voltage as low as 1.8V.
2008-04-16 Learning from the superhet
Trying to transform an unmanageable problem into one that can be managed, and then solving it, rather than approaching it directly, is a good approach to keep in mind for the system design challenges all engineers face.
2008-02-27 Integrated hybrid TV tuner saves space, cost
Maxim's MAX3541 single-conversion, hybrid TV tuner requires only one external SAW filter, a crystal and a few discrete components in order to complete the solution, thus providing a cost-competitive alternative to canned tuners.
2004-12-01 Hearing, seeing the sound of change: From analog to digital audio amplifiers
Digital amplifier systems keep audio signal in the digital domain virtually all the way to the speaker; analog-based systems convert the signal to analog early in the process.
2007-04-03 Genesis, Legend deliver DTV platform for China
Genesis Microchip and Legend Silicon announced a market-ready DTV platform customized for TV manufacturers to deliver fully featured DTVs to China quickly and cost-effectively.
2006-02-09 Firm offers sub-$700 PCB signal integrity analysis suite
What-If Design Software LLC is rolling out its AS/ SIST tool suite over the Internet for $695.
2006-10-10 DWA chip connects wired USB peripherals to Certified WUSB systems
NEC Electronics and its subsidiaries have announced the availability of samples of a new device wire adapter LSI chip to enable the connection of wired USB peripherals to systems based on the Certified Wireless USB specification.
2004-08-16 Dual regulator typology needed to power modern cellphones
Advances in process technology require newer power management to wring every minute out of the battery in cellphones.
2003-01-16 Direct conversion: No pain, no gain
The benefits of direct conversion require the designer to carefully consider the non-ideal world, or receiver design, and to conquer the issues one at a time.
2011-03-11 Digitizers boast instantaneous bandwith, high dynamic range
ZTEC Instruments' ZT844x Series RF/IF digitizers/baseband signal analyzers offer engineers a combination of instantaneous bandwidth to receive and process next-generation digital communication signals.
2004-12-09 Demodulator IC with up to 100MHz operating frequency
New Japan Radio unveiled an FM IF demodulator IC with 450kHz (standard) IF input.
2004-05-03 CMY212/CMY213 Application Note
This app note discusses how to integrate an external IF amplifier to the CMY212/CMY213 device to achieve high input operation.
2005-04-08 Chipset links global communities
SiGe's transceivers provide low noise figure and phase noise, high linearity and low current and high integration.
2002-02-01 BTI pager IC includes DFSK modulator
The BT10381 RF-IF pager receiver IC from BethelTronix Inc. integrates a two-level DFSK demodulator that eliminates the drift problems associated with analog FSK designs.
2007-07-24 BER, noise measurement tool adds enhancements
With the addition of the new G.703 Interface Pod option, the Aeroflex FB100A BER tester can now test a wide range of standardized telecommunications interfaces
2008-01-02 Automate EMC measurement
This article shortly describes how to establish an automation EMI test system, emphasize the problems during the test and the solution and how to configure the system and parameters correctly.
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