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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.
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2004-03-26 Z-Communications VCO with 45MHz/V tuning sensitivity
The compact V910ME01 VCO from Z-Communications delivers 3,930MHz to 4,200MHz within 1.5Vdc to 11Vdc of control voltage.
2003-12-01 Z-Communications VCO with -86dBc/Hz spectral signal
The SMV5256A voltage-controlled oscillator from Z-Communications operates at a frequency range of 5.256GHz to 5.356GHz.
2003-10-31 Z-Communications VCO offers -110dBc/Hz phase noise
The CLV0600A voltage controlled oscillator from Z-Communications Inc. is primarily used in the test equipment market.
2004-02-26 Z-Communications VCO has -108dBc/Hz noise performance
The CRO4385A VCO from Z-Communications is geared for the point-to-point and point-to-multipoint microwave communication market.
2004-03-23 Z-Communications VCO covers to 2,300MHz
The CRO2275A VCO from Z-Communications covers 2,250MHz to 2,300MHz in 0.5Vdc to 4.5Vdc of tuning with unmatched phase noise performance.
2007-04-23 W-CDMA 2.3GHz VCO using BFR360F and BBY58-02V
The BFR360F is a 14GHz transition-frequency device which takes advantage of the latest manufacturing techniques requiring fewer processing steps than other devices in its class.
2007-10-15 VCO-based microwave signal generator rolls
A fast-switching microwave signal generator ideal for data intensive applications, such as antenna test, satellite payload test, and terrestrial microwave link testing, has been introduced by Anritsu Co.
2008-03-28 VCO touts 'exceptionally' low phase noise, high output power
From Z-Communications comes a Pb-free, RoHS-compliant, narrow-band coaxial resonator oscillator in the L band.
2007-11-20 VCO runs from 2,778MHz to 2,945MHz
Crystek Corp. has introduced a voltage-controlled oscillator (VCO) that operates from 2,778-2,945MHz with a control voltage range of 0.1V to 16V.
2008-07-21 VCO rolls for L-band microwave radio apps
Z-Communications Inc. has released a RoHS-compliant voltage-controlled oscillator (VCO) in the L-band.
2004-12-02 VCO inductor and external loop filter design guidelines for the AT86RF401X
This app note explains the process of implementing a design using the AT86RF401X (RF wireless microtransmitter)
2002-10-24 VCO designs for wireless handset and CATV set-top applications
This application note describes Alpha Industries' products and services for wireless handset and CATV set-top applications.
2006-02-09 VCO delivers -111dBc/Hz at 10kHz
Z-Communications' latest VCO utilizes patented design techniques to deliver single side bandphase noise of -111dBc/Hz at 10kHz away from carrier with a second harmonic suppression better than -15dBc.
2001-04-19 Varactor SPICE models for RF VCO applications
This application note discusses a varactor equivalent circuit model for RF VCO applications.
2002-09-20 Varactor spice models for RF VCO applications
This application note describes the varactor parameter models for RF VCO applications.
2005-06-22 UMC fabricates record-setting VCO using CMOS tech
Taiwan foundry United Microelectronics Corp. (UMC) has fabricated a voltage-controlled oscillator (VCO) with a record-setting fundamental operating frequency of 105GHz using its 0.13?m RFCMOS process technology.
2004-11-05 Tiny VCO supports wide frequency range
Challenged to develop a miniature VCO with comparable performance to larger packages, Crystek Crystals launched its smallest VCO package.
2008-07-08 Tiny VCO offers ultralow phase noise
Z-Communications has launched a RoHS-compliant voltage-controlled oscillator model CLV1370A-LF in L-band that has a typical phase noise of -108dBc/Hz at 10kHz offset and typical tuning sensitivity of 24MHz/V.
2002-09-20 Switchable dual-band 170/420 mhz vco for handset cellular applications
This application note discusses a new switchable VCO solution which employs switching between separate tank circuits.
2013-10-10 South Korean researcher develops wideband ring VCO
Wideband voltage-controlled oscillator is a key part of an IR-UWB system used in a Doppler radar system, which can detect human vital signs such as heart beats and respiration.
2004-05-31 Richardson to offer Z-Comm VCO, PLL products
Richardson Electronics Ltd has signed a distribution agreement with Z-Communications Inc., a manufacturer of voltage controlled oscillators (VCOs) and highly integrated signal source solutions, including compact phase locked loop (PLL) modules.
2001-06-04 Reflow soldering conditions for VCO and synthesizer products
This application note describes recommended practices for the successful assembly of M/A-COM VCO and synthesizer components using automated solder reflow techniques.
2007-12-21 PLL VCO covers 500MHz to 3.5GHz frequencies
Raltron Electronics Corp. has released its PCC-A1-3100 phase lock loop (PLL) family of VCOs that covers a frequency range from 500MHz and 3.5GHz.
2004-05-04 Murata rolls out DR-VCO for 76GHz band radar
The QMV101 series of 38GHz band DR-VCO from Murata is engineered for use in automotive 76GHz band radars.
2013-05-23 Macom's varactor diode built for high frequency VCO tuning
The MAVR-000120-1411 is a package-less varactor with contacts that allows for standard solder reflow manufacturing processes and is fabricated using a GaAs process.
2002-05-03 Low-cost, extremely wide bandwidth VCO design using prescalers and Z-COMM VCOs
This application note illustrates the process of converting higher frequency VCOs to an extremely wideband, low frequency VCO at low cost.
2002-05-06 Low cost, extremely wide bandwidth VCO design using multipliers and Z-COMM VCOs
This application note illustrates the process of converting higher frequency VCOs to an extremely wideband high frequency VCO at a low cost by the use of multipliers.
2003-08-15 GP2010 and GP2105: Reduction of VCO-related EMC radiation
This application note briefs users of Zarlink's GP2010 and GP2105 GPS RF Front-End modules on how to reduce the radiated emissions of VCO harmonics.
2004-01-15 Crystek VCO suits portable radios, test instruments
Crystek Crystals Corp. has launched a line of VCOs that is initially comprised of three industry standard packages.
2004-02-20 Crystek VCO exhibits 53dBm output power
Crystek Crystals has introduced a line of high-performance VCOs that generates frequencies between 2.974 GHz and 3.274 GHz.
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