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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
2008-02-01 Integration key to 802.11n success
Technical challenges resulting from the latest wireless LAN (WLAN) specification, 802.11n, are significant. Serving multiple frequency bandwidths (2.4GHz and/or 5GHz) with multiple antennas, the devices used in 802.11n WLAN must be optimized for output power as well as size.
2010-04-12 Integrated RF ICs save space in comms apps
Analog Devices Inc. has launched two RF ICs for broadband communications systems that can reduce component count by more than 75 percent without compromising performance.
2004-07-26 Infineon RF transceiver has complete GSM functions
Infineon announced that it had started volume shipments of its GSM/GPRS RF transceivers manufactured in standard CMOS technology to a tier 1 customer.
2005-04-04 Inductors provide Q values up to 49
Vishay announced two thin film chip inductors in compact 0402 and 0603 case sizes that provide high Q values up to 49 at specified frequencies from 100MHz to 1,700MHz.
2005-04-25 Inductor offers tight tolerance
JARO Components developed its new THI series of high-frequency inductors as a more economical choice than traditional wirewound or thin-film inductors
2007-02-06 HVIC with PFC eases multilamp circuits in fluorescent ballasts
IR's IRS2168D HVIC features a wide range input voltage PFC to simplify complex multilamp circuits.
2005-07-20 HHNEC develops three series PLL IPs
Shanghai Hua Hong NEC Electronics Co. Ltd (HHNEC) has developed a series of high performance frequency synthesizers for SOC clock generation IPs used in 0.25?m CL250G process.
2005-09-23 GPS receiver delivers on performance, size and low power
SiGe Semiconductor expanded its PointCharger product line with the SE4110L radio IC, which is designed to deliver the performance, integration, and low current required for GPS-enabled handsets and portable consumer products.
2002-10-10 GPS receiver allows simultaneous UMTS, GSM/GPRS operations
Qualcomm's RGR6200 GPS radio receiver is designed to enable simultaneous GPS operation with UMTS and GSM/GPRS systems.
2008-05-23 Good finds: Surveilance kit for $99.99
For $99.99 you can get the SecurityMan NiteCam2, a two-camera, one-base station, 2.4GHz wireless audio/video monitoring setup capable of near-zero-light operation.
2007-07-02 GNSS receiver achieves cascaded NF of 1.4dB
Maxim Integrated Products introduces the MAX2769, the industry's first universal, single-chip global navigation satellite system receiver for GPS with total cascaded NF of 1.4dB.
2014-02-18 Fujitsu-Imec partnership yields wireless transceiver tech
The wireless transceiver for BAN applications features the digitally controlled receiver and the high-speed digital three-point modulation technologies, lightening the burden on patients using sensors.
2007-03-16 Fujitsu makes CMOS IC with 40-44Gbps CDR rate
Fujitsu Laboratories of America and Fujitsu Laboratories have developed the industry's first CMOS IC that performs CDR at 40Gbps to 44Gbps, enabling the future implementation of 40Gbps optical Serdes modules.
2007-09-25 From RF to baseband in one demodulator
A monolithic quadrature demodulator for direct down conversion applications has been introduced by Texas Instruments Inc.
2008-11-03 Frequency synthesizer offers sub-picosecond jitter
Maxim introduces the MAX3678 low-jitter frequency synthesizer with nine LVPECL clock outputs and intelligent dynamic switching.
2008-11-20 Frequency synthesis and planning for PLL architectures
In many applications, it is desired to generate a set of frequencies from a single source frequency. This source could be a temperature controlled crystal oscillator, a clock recovered from data, a recovered signal from GPS, or anything else that generates a fixed frequency.
2006-05-24 Free PLL design tool debuts with PLL hardware
ADI is rolling out a new generation of its existing ADIsimPLL phased-locked loop circuit design and evaluation tool, as well as two new PLL synthesizers.
2005-03-07 FM tuner cuts component count
ST announced the availability of its model TDA7701 single-chip FM tuner for portable entertainment and computing equipment.
2015-05-15 Enhancing analogue design verification using UVM
In this article, we explore an efficient, reusable analogue and mixed-signal verification approach using the Universal Verification Methodology.
2011-04-29 Dual mixers reduce power use and size for 4G MIMO receivers
Linear Technology's LTC559x family of high dynamic range dual downconverting mixers help reduce power consumption for 4G MIMO receivers.
2012-06-28 Development kit eases RF system design
Altera and Texas Instruments have launched a modular RF development kit for prototyping systems based on Altera's 28nm Arria V FPGAs.
2009-02-02 Design tools simplify RF systems dev't
Analog Devices Inc. has released two free downloadable software tools that can ease RF systems design.
2007-05-01 Design a single-chip, six-band UMTS transceiver for global connectivity
Find out what you need to design a truly global phone with full wireless connectivity.
2004-09-10 Cypress offers engineers design flexibility
Cypress announced they have developed the largest and most flexible portfolio of SMPTE standards-compliant PHYs on the market.
2007-01-25 CW counter covers up to 60GHz
Pendulum Instruments has announced a family of microwave frequency counter/analyzers with integrated power meters, covering up to 60GHz of frequency range.
2008-01-31 CSR evolves along with Bluetooth
Over the years, CSR has evolved steadily in the Bluetooth market by continuing to support the latest version of the standard, improving its design process and including additional features.
2012-01-10 Create sounds using analogue electronics (Part 4)
The fourth installment of this series tackles voltage-controlled amplifiers.
2009-07-14 Compact PLL/synthesizer operates from 1,600-2,200MHz
Crystek Corp. introduces the CPLL66-1600-2200 PLL/synthesizer. It operates from 1,600MHz to 2,200MHz with a typical step size of 1,000kHz.
2005-01-06 CML wireless data modem IC saves space, components
CML rolled out a single-chip GMSK packet-data modem with RF transceiver that offers a versatile baseband modem, and IF and RF processing functions.
2006-04-19 Clock generators target low-skew apps
Exar Corp. added a new family of clock generators to its clock and timing solution portfolio.
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