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VCO What are VCOs? Search results

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What are VCOs?
Voltage controlled oscillators (VCOs) can be tuned over a wide range of frequencies by applying a voltage (tuning voltage) to it. This type of oscillator is less costly than crystal oscillators, but not as stable.
total search288 articles
2005-03-17 Silicon Laboratories provide Enfora with Aero EDGE radio
Silicon Laboratories Inc. disclosed that Enfora, a wireless technology provider for mobile products, has adopted Silicon Laboratories' Aero EDGE radio for GSM/GPRS/EDGE PDAs and smart phones.
2004-11-18 Silicon Lab transceiver simplifies design of Lenovo handsets
Silicon Laboratories Inc. disclosed that its Aero I GSM/GPRS transceiver has been adopted by Lenovo Mobile for its G880, G886, G910, G620C, V508 and E600 handsets.
2004-12-17 Silicon Lab offers Aero transceiver to Amoi mobile handsets
Silicon Laboratories Inc. revealed that Amoi Electronics Co. Ltd has adopted its Aero I+ GSM/GPRS transceiver for several of Amoi's mobile handsets including the CA8, DF9, F6, F8 and F90 handsets.
2000-11-01 Signal leakage mires conversions
This article reviews superheterodyne tuning techniques and offers pointers for more streamlined implementations.
2013-04-18 SiGe transceivers target mm wave wireless backhaul
Infineon's BGTx0 family claims to simplify system design and production logistics by replacing more than 10 discrete devices.
2005-09-16 Shifting to photonic clocking
The transition to optical clocking is a 'when,' not 'if' situation that demands a low-cost photonic solution.
2006-04-24 SDI products target broadcast video apps
National Semiconductor introduced six serial digital interface products for professional broadcast video applications.
2007-09-12 Satellite TV tuner needs no external LNA
To reduce total solution size and cost, Maxim's new satellite TV tuner provides an 8.0dB noise figure and a -75dBm to 0dBm dynamic range, thus eliminating the need for an external LNA.
2004-12-20 Samsung adopts Silicon Labs' Aero II transceiver
Samsung Electronics Co. Ltd has adopted Silicon Laboratories Inc.'s Aero II GSM/GPRS transceiver for cellular handsets.
2006-05-31 Rising unveils RF transceiver chipset for 3G WCDMA handsets
Rising Micro Electronics announced that it has successfully developed RF transceiver chipset for 3G WCDMA wireless handsets using Jazz Semiconductor's 0.18m SiGe BiCMOS.
2013-02-18 Richardson rolls out 18GHz Microwave PLL Synthesiser
The ADF41020 can be used to implement local oscillators as high as 18GHz in the up-conversion and down-conversion sections of wireless receivers and transmitters.
2008-05-13 RFMD launches 2.4GHz ISM band transceiver
RF Micro Devices has introduced the ML2726 ISM band transceiver, a low power, low-IF, frequency shift key transceiver designed for operation in the license-free 2.4GHz ISM band.
2008-04-16 RFMD intros integrated configurable components
RF Micro Devices has introduced the first in a line of integrated configurable components delivering high levels of flexibility and functional integration to designers of radio systems.
2003-12-17 RFMD device suits CDMA, JCDMA apps
RF Micro Devices Inc. (RFMD) has announced the availability of the RF2890 dual-band cellular/GPS LNA/mixer for CDMA and JCDMA applications.
2005-10-20 RFICs invoke a paradigm shift
New manufacturing techniques and packaging technologies result in higher performance RFICs.
2010-10-11 RF transceiver ups data rate for smart grids
Semtech's SX1233 ISM-band transceiver combines a bit rate of 600Kbit/s with a link budget of 137dB, ultralow power consumption, adjacent channel rejection with blocking immunity.
2009-12-17 RF transceiver cuts costs, extends battery life
Semtech Corp. is offering a programmable RF transceiver that features a 135dBm link budget that is 10dB more than competing devices.
2006-05-23 RF synthesizers boast low phase noise, large band cover
STMicroelectronics' new RF synthesizers are touted to have the industry's lowest integrated phase noise and largest band coverage.
2005-09-08 RF ICs can be quite complex
According to one industry analyst, the worldwide handset RF semiconductor market is expected to grow from $5.3 billion in 2004 to $8.26 billion in 2008
2005-09-08 RF ICs can be quite complex
Understanding that complexity, and putting these devices to work for you, can help get you ahead of the competition
2005-12-23 Reduce clock network design effort with zero delay generators
Lattice Semiconductor's second generation enhanced zero-delay clock generators for high performance communications and computing applications can generate up to 20 clock outputs.
2007-12-06 Receiver/transmitter line rolls for industrial RF systems
A family of UHF ASK/FSK receiver/transmitters ideal for low-cost industrial RF receiving systems with low power consumption requirements has been launched by Atmel Corp.
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.
2009-06-17 Programmable clock generators simplify device testing
Cypress Semiconductor Corp. has launched the FleXO family of programmable high-performance clock generators.
2005-05-12 Programmable clock generators offer versatility, high-performance
Integrated Device Technology announced a new family of programmable clock generators that promises to address the evolving needs of next-generation clock networks.
2008-06-09 Precision frequency synthesizer alleviates noise
Micrel Inc. introduces the SY89610L, a precision frequency synthesizer featuring ultralow jitter.
2009-01-26 Polyphase modulation using a FPGA for high-speed applications
This application note reviews and analyzes a polyphase modulation scheme that generates high-frequency intermediate frequency (IF) carrier signals in digital IF modems using an Altera FPGA.
2007-10-11 PLLs tailored for wireless, satellite applications
Analog Devices Inc. beefs up its portfolio once again with the release of the the ADF4157, a fractional-N PLL synthesizer.
2010-01-08 PLL synthesizer cuts costs in FMCW radars
Analog Devices Inc. has released a new PLL synthesizer that enables flexible and cost-effective implementation of frequency modulated continuous wave (FMCW) radar systems.
2000-11-01 Plan to avoid 3G frequency spurs
Designers of 3G must avoid spurious responses and adopt architectures that allow high levels of IC integration. A fundamental part of design is frequency planning to minimize the problems of duplex operation.
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