Broadband channel simulator for robust satellite link designs
Apr 1, 2004
By Jack Anderson In the real estate market, there are three priorities: location, location and location. In the broadband satellite communications arena, the top three...
Characterizing [S]-parameters of 75 circuits with 50 lab equipment
Apr 1, 2004
By James Liu and Brian Whitaker Engineers working with cable, terrestrial or satellite TV applications are frequently required to make S-parameter measurements on these circuits. But...
RF LDMOS transistors come in plastic packages
Apr 1, 2004
To lower the cost of silicon RF transistors by almost 25 percent, Allentown, Penn.-based Agere Systems has packed five high-performance RF LDMOS transistors...
3G deployment better late than never
Apr 1, 2004
Despite many years of delays, it seems to be better late than never for 3G wireless deployments, reports In-Stat/MDR. The high-tech market research firm...
Next-generation wireless components
Apr 1, 2004
Three-way power divider The Pulsar model No. PS3-51-451/11S delivers three matched outputs over the frequency range of 2 to 20 GHz with 1.8 dB insertion...
Company raises $1 million for product development
Apr 1, 2004
Wispry, an Irvine, Calif.-based fables developer of tunable RF components and modules for the wireless applications has raised $1 million in funding to...
Field trials of an all-software GSM base station
Mar 1, 2004
By Jeffrey Steinheider As part of the Mid-Tex Cellular radio access network, Vanu, Cambridge, Mass., installed a software radio GSM base station in DeLeon, Texas, in June 2003....
Little known characteristics of phase noise
Mar 1, 2004
By Paul Smith A wealth of information is available on the topic of phase noise, its A characteristics, how it can be measured, and how it affects system performance....
Triband micromodule targets digital audio broadcasting
Mar 1, 2004
RadioScape has released details of the latest addition to its family of software-defined modules for digital audio broadcast (DAB). The new RadioScape...
Zigbee: Another wireless standard in the pipeline
Mar 1, 2004
Ashok Bindra, Editorial Director There are so many wireless technologies out in the market today that one might think there is no need for another one. That the present standards are...
Broadband low-noise amplifier using GaAs FET
Mar 1, 2004
By Ashok Nawarange A broadband low-noise amplifier can be designed based on Takahasi's results. This design method bypasses the gain bandwidth theory and generates lumped-element...
Microwave components
Mar 1, 2004
Low-pass, high-pass filters Mini-Circuits' LFCN low-pass filters and HFCN high-pass filters deliver high rejection outside the passband and virtually...
High-speed wireless USB platform taps UWB tech
Mar 1, 2004
Staccato Communications has introduced a high-speed wireless USB development platform using ultrawideband (UWB) wireless technology. The SC1030D platform...
Products
Mar 1, 2004
Amplifiers WCDMA power amplifier SiGe Semiconductor has announced the RangeChargerT SE5120, a power amplifier for cellular handsets compliant with the...
Micromachined MEMS capacitors are electrically variable
Mar 1, 2004
Researchers at Philips have extended micro-electromechanical systems (MEMS) technology to variable capacitors. Thus, Philips' researchers have demonstrated...
ZigBee alliance gains momentum
Mar 1, 2004
The ZigBee Alliance has grown to more than 62 member companies spanning semiconductor manufacturers, original equipment manufacturers (OEMs), embedded software providers and service providers....
Getting closer to a top-down methodology for RF SoC design
Mar 1, 2004
By Jean Oudinot The drive to fully integrate communications products onto a single chip has created the urgent need for an integrated RF SoC design flow. Until now the...
Locator beacon design for victims in distress
Mar 1, 2004
By Fred Mohamadi A multiband radar beacon locates victims in distress during search and rescue missions. The beacon can also help provide ordinance's accurate delivery...
Single test instrument eases WLAN Tx/Rx analysis
Mar 1, 2004
To offer an order of magnitude improvement over conventional instruments in conducting radio layer measurements on WLAN devices in production or during...
Ultra-wideband (UWB) standardization must come sooner than later
Feb 1, 2004
Ashok Bindra, Editorial Director Although under development for many years now, ultra-wideband (UWB) has recently gained notoriety as a promising high-speed, low-power wireless technology...
How to debug a PLL frequency synthesizer
Feb 1, 2004
By Bob Kelly Radio systems incorporate frequency synthesizers based on phase lock loop (PLL) technology for various reasons. The benefits of PLLs include: The ease...
