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Wireless Infrastructure

Cover Story

  • Oct. 10, 2012
    Article

    Portable Analyzers Pack Lab Quality 10

    In-field microwave measurements have long been associated with mediocre portable test equipment. Boasting lab-worthy performance, a new line of portable analyzers may finally be shifting this perception....More

News & Columns

  • Oct. 8, 2012
    Article

    Video Travels Easily Between Devices 10

    Smartphones have become essential tools to many consumers—acting as a phone, camera, e-mail provider, schedule-keeper, and social-media enabler, among other things. Given that consumers are increasingly using their smartphones to take photos and videos, it is only natural that they should be enabled to easily share them with an audience via a bigger screen....More
  • Oct. 8, 2012
    Article

    Missile Defense Succeeds From Sea 1

    Missile defense systems must identify and respond to incoming threats in a short amount of time. Although they have reached great heights, US missile-defense efforts have thus far been contained to land. Recently, however, a US Army and Navy test demonstrated that Raytheon Co.’s Joint Land Attack/Cruise Missile Defense Elevated Netted Sensors (JLENS) can integrate with the defensive systems currently in the Navy’s inventory....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. 27, 2012
    Article

    Broadcast Services Are Demonstrated Over LTE 3

    Using evolved Multimedia Broadcast Multicast Service (eMBMS) technology, it is possible for Long-Term-Evolution (LTE) network infrastructure to be used for the delivery of broadcast services, such as television. This capability, if utilized, could certainly impact how LTE services are offered....More
  • Oct. 8, 2012
    Article

    Interview: Alex Goloschokin, Managing Director of Copper Mountain Technologies

    NF: Copper Mountain Technologies is a fresh face in the microwave and RF test and measurement market. How long has the company been around?...More
  • Oct. 8, 2012
    Article

    Methodology Optimizes Design Of Scalp-Implantable Antennas 1

    In the area of implanted medical devices, antenna-enabled biotelemetry is gaining attention for its potential to overcome the limitations of inductive biotelemetry. Such issues include low data rate, restricted communication range, and sensitivity to inter-coil misalignment....More
  • Oct. 8, 2012
    Article

    Time-Interleaved ADC Benefits 60-GHz Transceiver

    A number of standards have sprung up in the 57-to-64-GHz band, such as IEEE 802.15.3c, IEEE 802.11ad, and WirelessHD. No matter the standard, they all have one common goal: to speed the realization of integrated circuits (ICs) that can support large wireless data transfers at those millimeter-wave frequencies....More
  • Sep. 20, 2012
    Article

    Memory Infusion Allows Chip To Further RFID’s Reach 10

    Langen, Germany: RF identification (RFID) has been a major success for the wireless industry, helping manufacturers keep track of parts and products in a multitude of markets. Now, RFID may have the capacity to expand its scope by invading new markets....More
  • Oct. 5, 2012
    Article

    Cities Seek Sustainability

    Energy-efficient homes are becoming more commonplace, thanks to affordable energy-conserving light bulbs and appliances. With the advent of products like the Nest “smart” thermostat, they also are conserving energy more intelligently....More

Industry Trends And Analysis

  • Oct. 11, 2012
    Article

    Tracking Trends in Wireless Infrastructure

    Wireless communications has evolved over the years into a hybrid vehicle for voice, video, and data. The infrastructure needed to support its continued growth must expand for wider coverage, using smaller cell sites where necessary....More
  • Oct. 2, 2012
    Article

    Preparing RF/MW Parts For Space

    Space has been called “the final frontier” in both fiction and reality, and it does represent a challenging market for many RF/microwave companies. Components built for use on orbiting satellites as part of communications links (to give one example) simply cannot fail during the intended lifetime of the satellite, which is typically 10 years or longer....More
  • Oct. 9, 2012
    Article

    Crows Fly High At 49th Annual AOC 6

    Held Sept. 23-26, the 2012 installment of the Association of Old Crows (AOC) International Symposium and Convention featured the best of the military electronics industry....More

Design Features

  • Oct. 10, 2012
    Article

    Arming Antennas With Dual Bandstops

    Various methods can achieve an antenna with band-notched characteristics. With the present design, the authors inserted C-shaped slots in various antenna configurations to create a desired frequency stopband....More
  • Oct. 11, 2012
    Article

    Slot Antenna Uses Dual Polarization

    Improving upon previous dual-polarized antenna designs, the authors have developed a broad beamwidth slot antenna featuring low cross-polarization and high isolation....More
  • Oct. 11, 2012
    Article

    Optimize OFDM Via Phase-Noise Injection

    For all of its benefits, orthogonal frequency division multiplexing can still pose serious design challenges. A signal generator may prove to be the key in optimizing its performance....More
  • Oct. 11, 2012
    Article

    Antenna Aims At Dual Bands 1

    Antennas are critical components in WLAN and other wireless systems. A modified ground structure can be employed to effectively design them for wireless applications....More

Product Technology

  • Oct. 8, 2012
    Article

    Portability Adds To Testing Versatility

    Portable test equipment has greatly improved over the past decade, narrowing the performance gap between portable and benchtop instruments. In terms of functionality, the number of choices for portability instruments has also increased....More
  • Oct. 8, 2012
    Article

    Scopes Include Spectrum Analyzers 13

    Oscilloscopes are the workhorse test instruments of any electronic design bench, and the MDO4000 lines of mixed-domain oscilloscopes (MDOs) from Tektronix have brought extended capabilities to these invaluable instruments by including spectrum analyzers. To make them even more accessible, the firm recently announced two low-cost additions to the MDO4000 product line: models MDO4014-3 and MDO4034-3, with analog bandwidths of 100 and 350 MHz, respectively....More
  • Oct. 8, 2012
    Article

    SDR Kit Helps Radio Designers 8

    Software-defined-radio (SDR) technology provides the extreme flexibility of software control of radio parameters. However, because it is so different from traditional analog, mixer-based radio architectures, knowing how to optimally incorporate an SDR in a commercial or military communications application requires something of a learning curve....More
  • Oct. 8, 2012
    Article

    Module Contains Vector Transceiver 2

    Vector signals, with in-phase (I) and quadrature (Q) signal components, are part of modern wireless communications systems employing complex modulation. Testing those systems usually calls separate vector signal analyzers (VSAs) and vector signal generators (VSGs)....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. 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

    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

    Oscillator Locks Onto 1030 MHz 6

    Model CLX-1020-XA is a fixed-frequency, phase-locked oscillator with a stable output at 1030 MHz....More
  • Oct. 8, 2012
    Article

    BUC Links Ku-band Satcom Systems 5

    Model XTS-40KHE-B1 is a Ku-band block upconverter (BUC) that includes temperature compensation, gain control, harmonic filtering, receive-band filtering, and an output isolator in a compact unit weighing less than 10 lbs; it measures just 11.2 x 4.4 x 54. in....More
  • Oct. 8, 2012
    Article

    Planar Antenna Captures NFC Data 1

    A near-field communications (NFC) antenna enables mobile telephones to read data from a source at distances to 40 mm. The antenna sends and receives clear signals even when installed in close proximity to a battery or metal housing....More
  • Oct. 8, 2012
    Article

    Frequency Doubler Extends To 30 GHz

    Model XX1010-QT is a GaAs monolithic-microwave-integrated-circuit (MMIC) frequency doubler from M/A-COM Technology Solutions that is well suited for satellite-communications (satcom) and point-to-point communications systems....More
  • Oct. 8, 2012
    Article

    Portable Tester Scans To 1 GHz

    The 3550 digital radio test system enables radio testing from 2 MHz to 1 GHz and is ideal for field testing of analog and digital systems....More
  • Oct. 8, 2012
    Article

    GaAs Chips Help VSAT Systems 3

    A family of Ka-band GaAs chipsets has been developed by TriQuint Semiconductor for use in very-small-aperture-terminal (VSAT) satellite communications systems. The family includes a variable-gain amplifier, a 1-W power amplifier (PA), a subharmonic frequency upconverter, and a block frequency downconverter....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. 26, 2012
    Article

    Plan For The 1000x Mobile-Data-Traffic Increase 1

    The last few years have seen phenomenal growth in the global demand for mobile-broadband data services. This growth is expected to continue unabated....More
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