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More in Active components

  • Oct. 8, 2012
    Article

    Module Supports ISM Front Ends

    Designed for applications in the 868/900-MHz Industrial-Scientific-Medical (ISM) band, model RFFM6904 is a single-chip front-end module (FEM) ideal for portable equipment....More
  • Oct. 8, 2012
    Article

    Switch Channels 14.4 to 15.4 GHz

    Model P2T-14D415D4-15-SMT-20W is a driverless high-power single-pole, double-throw (SPDT) switch designed for applications from 14.4 to 15.4 GHz. It exhibits maximum insertion loss of 1.2 dB at room temperature (+25°C)....More
  • Oct. 8, 2012
    Article

    VCO Tunes From 1210 To 1230 MHz

    Model USSP1217-LF is a RoHS-compliant voltage-controlled oscillator (VCO) designed for L-band applications from 1210 to 1230 MHz. It tunes with voltages from 0.5 to 3.0 VDC and tuning linearity of better than 1.1:1....More
  • Oct. 3, 2012
    Article

    Amps Built To Perform

    Producing amplifiers that perform well, and over a long period of time, has been the goal of a relative newcomer to the high-frequency industry....More
  • Sep. 28, 2012
    Article

    Metamaterials-Based Approach Promises Satellite Connection 1

    Imagine that a new antenna technology truly made “broadband everywhere” possible. As the most recent spinout from Intellectual Ventures (IV), Kymeta just closed a $12-million funding round to develop and bring to market IV’s Metamaterials Surface Antenna Technology (MSA-T)....More
  • Sep. 24, 2012
    Article

    OCXOs Provide Holdover Timing For Base Stations

    For wireless communications that use time-division-duplex (TDD) signaling, it is very difficult to maintain synchronization. In addition to providing real-time services, base stations must maintain accurate relative timing for successful call-signal handoff....More
  • Sep. 18, 2012
    Article

    EuMW Week Welcomes Pair of Clock Generators

    Amsterdam, the Netherlands will play host to European Microwave Week next month, with this annual gathering of RF/microwave companies scheduled for October 28 through November 2....More
  • Sep. 18, 2012
    Article

    Modulator Drives 100-Gb/s Networks

    Released in conjunction with this week’s European Conference on Optical Communications (ECOC) in Amsterdam, The Netherlands, TriQuint Semiconductor’s model TGA4947-SL is an extremely high-speed optical modulator that supports both 40- and 100-Gb/s optical networks....More
  • Sep. 18, 2012
    Article

    Small Synthesizer Spans 1.1 To 2.5 GHz 2

    Broadband signal generation with low noise characteristics is essential for a wide range of wireless communications standards. To meet some of these needs, the model LFSW110250-50 frequency synthesizer from Synergy Microwave Corp. tunes from 1100 to 2500 MHz in 500-kHz steps....More
  • Sep. 18, 2012
    Article

    IF Gain Block Builds On SiGe 2

    Model LTC6431-15 is an intermediate-frequency (IF) gain block from Linear Technology with broad frequency range from 20 to 1700 MHz and beyond....More
  • Sep. 17, 2012
    Article

    Software Speeds PA Design 78

    In RF and microwave engineering, the design and development of power amplifiers (PAs) is something of a black art. In addition to years of focused engineering experience, it demands a suitable collection of test and measurement equipment....More
  • Sep. 17, 2012
    Article

    LNA Suits WCDMA Base Stations At 1.95 GHz

    Numerous base stations elevate the placement of the first low-noise amplifier (LNA) so that it is near the antenna, rather than at the ground units. With this approach, signal conditioning is performed before the signal is transferred over a long cable from the top of the base station to the ground....More
  • Sep. 13, 2012
    Article

    Appraising Different Load-Pull Approaches

    Load-pull techniques are invaluable for understanding the behavior of an active device or component under changing impedance conditions. Changes in load impedance, for example, can shift the center frequency of an oscillator....More
  • Sep. 5, 2012
    Article

    Interview: Fred Ortiz, President, dB Control

    Even with GaN making inroads into TWTA application areas and defense budgets being cut, dB Control is preparing for a bright future for its TWTAs and MPMs—thanks to the growth in UAVs....More
  • Sep. 5, 2012
    Article

    Buy Microwave Amplifiers Online

    Centellax has added e-commerce functionality to its website, allowing visitors to buy amplifiers and other high-frequency products directly online....More
  • Aug. 29, 2012
    Article

    USB Switches Control 5 GHz 1

    A new line of Lab Brick Universal-Serial-Bus (USB) RF/microwave switches from Vaunix includes both single-pole, double-throw (SPDT) and single-pole, four-throw (SP4T) switch models with 10-W CW power-handling capability....More
  • Aug. 23, 2012
    Article

    MPMs Meld Tube And Solid-State Amplifiers

    Producing high levels of microwave power for transmit purposes has often invited debate over whether solid-state or vacuum-tube devices are better suited to the task. The MTA2000 series of microwave power modules (MPMs) puts such arguments to rest, however....More
  • Aug. 21, 2012
    Article

    Bench-Top Amplifiers Boost Lab Measurements

    A line of broadband amplifiers from Microsemi RF Integrated Solutions (RFIS) can now be supplied in test-instrument form to assist with low-level signal measurements in the laboratory. Model AML1826P3203-BT is an example, with 36-dB typical gain across a frequency range of 28.0 to 26.5 GHz....More
  • Aug. 14, 2012
    Article

    Modulator Manages High-Speed Data

    Satellite communications (satcom) offer ubiquitous service coverage from space, albeit with limited bandwidth. As a result, service providers seek to use higher-order modulation schemes to achieve high data rates over limited available bandwidth. In support of high-speed data, an eight-state, phase-shift-keying (8PSK) modulator was designed for use at X-band satcom frequencies, with data rates as fast as 1.5 Gb/s....More
  • Aug. 10, 2012
    Article

    Industry Shows Versatility At 2012 IMS

    Held in Canada for only the second time in its history, the 2012 IEEE International Microwave Symposium (IMS) brought a large influx of microwave engineers to Montreal, Quebec in celebration of the RF/microwave industry and its technologies. What follows is a sampling of some of the new product announcements made by proud exhibitors during the event....More
  • Aug. 10, 2012
    Article

    Aiming For Higher Amplifier Efficiency

    Lower amplifier (PA) efficiency can impact several operating parameters in a wireless communications system. In a portable device, low PA efficiency means short battery lifetime. In larger, higher-power systems, poor PA efficiency translates into more heat generated by the amplifier; if not effectively dissipated, it can shorten the amplifier’s lifetime. Efficiency has become one of the more important specifications for PA specifiers, almost on a par with gain and output power....More
  • Aug. 1, 2012
    Article

    VCO Replaces SAW Oscillators

    For applications that simply cannot tolerate phase noise, the DCSO1000-12 voltage-controlled oscillator (VCO) from Synergy Microwave Corp aims to provide the performance of a surface-acoustic-wave (SAW) source with the convenience of a VCO. Designed for use at 1 GHz, it tunes with typical sensitivity of 1.25 MHz/V using tuning voltages from 0.5 to 12.0 V. The oscillator delivers +4 dBm minimum output power at 1 GHz, with typical phase noise of -126 dBc/Hz offset 10 kHz from the carrier. Typical harmonic suppression is -35 dBc....More
  • Aug. 1, 2012
    Article

    Amps Conserve Current For ISM

    Skyworks Solutions recently introduced a pair of general-purpose amplifiersboth of which are suitable for low-noise Industrial-Scientific-Medical (ISM) band applications where the current draw must be held in check. Based on GaAs pHEMT technology, the amplifiers can be used over a wide operating voltage range of +1.8 to +5.0 VDC, with both drawing as little as 5 mA current. The lower-frequency amplifier, model SKY67012-396LF, works from 0.3 to 0.6 GHz and is optimized for the 433-MHz ISM band....More
  • Jul. 25, 2012
    Article

    Oscillator Targets 1662 to 1708 MHz

    Model CVCO33BE-1662-1708 is a voltage-controlled oscillator (VCO) from Crystek Corp. for applications from 1662 to 1708 MHz. It supplies +2 dBm typical output power and +4 dBm maximum output power with ±2 dB output-power flatness over that frequency range; in addition, it exhibits phase noise of typically -106 dBc/Hz offset 10 kHz from the carrier and -126 dBc/Hz offset 100 kHz from the carrier. Second-harmonic content is typically -15 dBc....More
  • Jul. 25, 2012
    Article

    Low-Cost Amplifier Drives Small Stations

    Small and efficient base stations are needed as wireless service providers hope to extend their coverage, and the low-cost model RFPA2089 power amplifier from RFMD is an ideal driver stage for these systems. It is a single-stage indium-gallium-phosphide (InGaP) amplifier housed in a SOT-89 package with frequency range of 50 to 2700 MHz. It provides 17.6 dB gain with 3.9 dB noise figure while consuming only 138 mA at +5 VDC....More

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