789 results found for Louis E. Frenzel, displaying items 1 - 20
November 20, 2009
[TechView: Communications] GPS-Derived Grandmaster Clock Delivers Ultra-Precise Time And Frequency Sync
Symmetricom’s XLi IEEE 1588 PTP v2 Grandmaster clock is a GPS referenced grandmaster clock and IEEE 1588 measurement and validation tool supporting PTP Version 2. It delivers ultra-precise time and frequency synchronization over Ethernet networks. Also, it features a dedicated 1588 time stamp processor.
November 20, 2009
[TechView: Communications] Downconverting Mixers Lower Power Consumption While Improving Performance
Linear Technology’s LTC554x family of mixers meets the demands of wireless basestation receivers in the 700-MHz to 4-GHz frequency range. These devices offer an outstanding input third-order intercept (IIP3) of 26 dBm, low noise figures of 9 to 10 dB, and high conversion gain of 8 dB.
November 20, 2009
[TechView: Communications] Single-Chip Optical Transceiver Targets Motherboard Applications
Optical-fiber interfaces are the fastest but still expensive, especially for computers. Mountable on a printed-circuit board (PCB), Luxtera’s OptoPHY optical transceiver paves the way to breaking the one dollar per Gigabit/s cost barrier for faster interfaces in the near future. The OptoPHY transceivers use Luxtera’s CMOS process, which integrates the optics and electronics on a single chip.
November 16, 2009[TechView: Communications] 1-Gsample/s ADC FIts Advanced Wireless Applications
The Texas Instruments ADS5400 analog-to-digital converter (ADC) provides a 1-Gbit/s sample rate with a resolution of 12 bits. With its superior signal-to-noise ratio (SNR) and spurious-free dynamic range (SFDR), it’s ideal for extra-needy wireless applications like receivers for radar, electronic intelligence and jamming, and super-highspeed data acquisition. The ADS5400 offers an excellent SNR of 59 dBFS and 75-dBc SFDR in first...
November 16, 2009[Engineering Essentials] Stars Of The Really Small Screen
Electronic addictions abound, due mainly to the surging popularity of gadgets like MP3 players and video games. In the face of this electronics mania, television remains a leading pastime. Even average viewers spend several hours a day watching the tube. But the type of viewing is changing. Instead of sitting in front of the latest LCD or plasma screen, viewers are on the go with their portable devices. New standards have been established, services are...
November 16, 2009[TechView: Communications] Single-Chip Optical Transceiver Targets Light Peak Technology
The roadmap for communications divides into two primary paths wireless and optical. While copper cabling won’t go away, data rates keep increasing, making optical the best choice especially when distance exceeds a few meters. Optical is also getting cheaper and better each year. Recognizing this, Intel’s Light Peak technology targets consumer electronics, PC peripherals, and other short-range fast communications applications. It may...
October 29, 2009
[TechView: Communications] SAW Oscillator Competes For Clock Duties Against Entrenched Crystal Oscillators
Crystal oscillators dominate the clock circuit space because of their superior precision, stability, and low cost. But Epson Toyocom offers some very attractive alternatives. Its EG-4101/4121A SAW oscillator has the stability and performance to challenge crystal oscillators in wireless basestations and LAN and SAN applications.
October 20, 2009
[TechView: Communications] Low-Power Short-Range Radio IC Simplifies Product Wireless
Adding wireless capability has never been easier with RFM’s TRC105 transceiver, which covers from 300 to 510 MHz. It enables two-way wireless communications in a wide range of applications, including automated meter reading (AMR), medical, home and industrial automation, security systems, two-way remote keyless entry (RKE), automobile immobilizers, asset tracking systems, sports and recreation equipment, low-power two-way telemetry systems, wireless toys, and controlled entry/access.
October 13, 2009
[TechView: Communications] SoC Integrates DSL, Wi-Fi, And Cordless Phone Functionality
Integrating more circuits onto smaller pieces of silicon real estate, the system-on-a-chip (SoC) is becoming the new norm in semiconductor devices. Broadcom’s BCM6362 is riding that wave, with an ADSL2+ modem, an 802.11n wireless local-area network (WLAN) transceiver, a Digital Enhanced Cordless Telecommunications (DECT) cordless telephone circuit, and Voice over Internet Protocol (VoIP) in a single 65-nm device.
October 13, 2009
[TechView: Communications] Fast Crosspoint Switches Implement Migration To 10-Gbit Networking
If you’re designing core/metro routers, blade servers, network storage equipment, broadcast video routers, and other gear with physical-layer switches, you now can have a fast crosspoint switch to do the job. Vitesse Semiconductor’s VSC3314-11 and VSC3316 can switch, transmit, and recover high-speed signals over lossy PCBs, backplanes, and cable.
October 13, 2009
[TechView: Communications] Clock Generator Beats All Jitter Specs For Broadcast Video Apps
The highly integrated Si5324 clock IC from Silicon Laboratories is optimized for professional broadcast video applications. It replaces traditional multi-component video PLL solutions with a single clock IC while providing 80% less jitter than competing solutions. It's ideal for video capture, conversion, editing, display, and distribution equipment that must be synchronized within video studios.
October 8, 2009[Engineering Essentials] Wireless In The Works
If you blink, you’ll probably miss the latest announcement of a wireless standard under development. Short-range wireless standards in the works include the latest version of Wi-Fi, an ISA standard called ISA 100a, and a smart-grid version of 802.11.4. The 802.11 working group, known as Very High Throughput (VHT), is looking at ways to extend the data rate to 1 Gbit/s and beyond using the popular Wi-Fi standard and protocol. It’s examining the 60-GHz band as an option, plus...
October 8, 2009[Engineering Essentials] Don't Be Intimidated By Low-Power RF System Design
Adding wireless connectivity to any product has never been easy. However, even when a wireless solution doesn’t seem to make sense, the potential exists. The cost is reasonable, and you add unexpected value and flexibility to the product. But what if you aren’t a wireless engineer? Don’t worry, because in many cases, the wireless chip and module companies have made such connectivity a snap. SELECTING A TECHNOLOGY The...
October 8, 2009[TechView: Communications] Man-Wearable Radio Implements Movable Tactical Mesh Network
Engineers in industrial environments probably have felt the need to connect some serial port device of interest to their Ethernet local-area network (LAN). Industrial devices still widely use RS-232 serial interfaces because of their robust nature. But making them accessible via your regular Ethernet LAN is tricky at best—at least, it used to be. The B&B Electronics Vlinx ESP211-232 mini serial server solves this problem (...
October 8, 2009[Technology Report] All Hail OFDM
Virtually all major new wireless technologies, including WiMAX and LTE, are based on orthogonal frequency-division multiplexing (OFDM), which has emerged as the wireless spectral efficiency leader. As long as you have the spectrum, you can get more bits per hertz than almost any other technology. It also has an inherent way to implement an access scheme for multiple users. On top of that, it’s a great fit with multiple-input, multiple-output (MIMO),...
October 8, 2009[Technology Report] The 4G Wireless Showdown: LTE Versus WiMAX
The development of Long-Term Evolution (LTE) and WiMAX has become, well, long term. Both technologies use advanced methods like orthogonal frequency-division multiple access (OFDMA) and multiple-input multiple-output (MIMO) (see “All Hail OFDM”). They’re also fully IP-based (Internet Protocol), offering high-speed data capability to deliver fast Internet access and advanced...
September 30, 2009
[TechView: Communications] Connect Any RS-232 Device To Your LAN
Engineers in industrial environments probably have felt the need to connect some serial port device of interest to their Ethernet LAN. Industrial devices still widely use RS-232 serial interfaces because of their robust nature. But making them accessible via your regular Ethernet LAN is tricky at best—at least, it used to be. The B&B Electronics Vlinx ESP211-232 mini serial server solves this problem.
September 24, 2009[TechView: Communications] Cable TV Tuners Deliver Higher Performance WIth Ultra-Low Power Consumption
MaxLinear developed its MxL20xRF family of silicon tuners for the global digital cable market. These devices target set-top-boxes (STBs), digital video recorders (DVRs), cable modems, embedded multimedia terminal adapters (EMTAs), cable gateways, and cable-enabled televisions. The MxL20xRF family uses MaxLinear’s proprietary digital CMOS process to deliver the highest performance in accordance with the ANSI/ SCTE40, DOCSIS/EURODOCSIS, and ITU-T...
September 24, 2009[TechView: Communications] Dual RF Tuner Brings Flexibility To Satellite Set-Top Boxes
Satellite TV installations use a set-top box (STB) that works with a remote low-noise block (LNB) converter at the antenna so the Ku band signals (10.95 to 14.5 GHz) are downconverted to the 950- to 2150-MHz range, making them more friendly to the coax connection between the LNB and STB. But this creates compromises in multi-set installations, as extra wiring is often needed. Any other special arrangement typically results in a more complex and...
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