Advances in handset antenna design
May 1, 2005
By Simon Kingsley This article shows how dielectrics can be used to improve the performance of electrically small antennas, as well as describes techniques to integrate the antenna, also known as an aerial, with the radio to create an antenna module....
Increasing the speed of testing GSM/EDGE mobile phone power amplifiers
May 1, 2005
By Roland Minihold, Rohde & Schwarz Munich, Germany Testing is one of the critical operations necessary to ensure that GSM/EDGE mobile phones meet their required specifications. Consequently, reducing this...
Design considerations for an ultra-compact GSM radio solution
May 1, 2005
By Mike Durrant and Andreas Nitschke The design of modern, cellular handsets places even more stringent requirements on the transceiver portion. Although the radio part of the handset is divorced from the user interface by sophisticated software, it is nonetheless absolutely essential to the satisfactory operation of the handset....
Clever software strategies for solving high-level system solutions
May 1, 2005
By Rodger H. Hosking With time-to-market crunches, limited-development resources and no tolerance for trial and error, today's project managers are urgently seeking lower-risk strategies for embedded system development....
Active downconverting RF mixer offers high linearity
Apr 1, 2005
Optimized to offer high linearity and wide dynamic range, Linear Technology's active downconverting RF mixer LT5527 brings a high level of integration...
Tightening the screws in RF power measurement
Apr 1, 2005
By Carlos Calvo and Anthony Mazzei Using a combination of a logarithmic amplifier and a temperature sensor it is possible to design a temperature compensation scheme to significantly reduce the contributions of the two major error factors in RF power management, temperature and process variations. In some cases, the temperature compensation hardware is integrated onto the power detector chip....
SI Intnl. adopts net-centric enterprise architecture
Apr 1, 2005
SI International Inc., an information technology and network solutions company, has developed and implemented an object-oriented (OO)/unified modeling...
Passive Components
Apr 1, 2005
Panel antennas Pacific Wireless has announced the release of the RooTenna line. The RooTenna58 wideband panel antenna is developed to allow integration...
Is part standardization becoming obsolete?
Apr 1, 2005
By R. Dale Lillard and Lee Mathiesen Originally, there were source control drawings (SCDs). These documents defined the environmental, electrical, marking, packaging and processing requirements...
Homeland security technologies undergo testing
Apr 1, 2005
A number of experts believe that bombs made from ammonium nitrate (AN) fertilizer have become a significant homeland security threat. If it were to be...
MBOA UWB kit targets consumer products
Apr 1, 2005
Combining a multiband OFDM alliance (MBOA) ultrawideband (UWB) hardware, software and consumer product development platform, Staccato Communications has...
Interface considerations for SDR using digital transmitters
Apr 1, 2005
By Walid K. M. Ahmed and Elias Kpodzo By definition, an application-programming interface (API) is the interface between the application software and the application platform, across which...
RFID solution conforms to EPCglobal Gen 2 protocol
Apr 1, 2005
Seattle, WA-based fabless semiconductor supplier Impinj Inc., has released its radio frequency identification (RFID) system, GrandPrix, which conforms...
Ensuring full reliability on the battlefield, while lowering cost
Apr 1, 2005
Ashok Bindra, Editorial Director While the defense budget continues to increase with time in order to ensure that the military is armed with equipment that exploits the leading-edge technologies,...
Auto RF optimizes wireless network
Apr 1, 2005
Recognizing the operational challenges faced by mobile operators, Telcordia Technologies Inc. has developed Auto RF, a state-of-the-art software that...
Products
Apr 1, 2005
RF Distribution Amplifiers and other new RF products are featured. Look for info on RF Distribution Amplifier and other new RF Products - rf distribution amplifiers and more here....
Antennas are getting the needed attention
Apr 1, 2005
Ashok Bindra, Editorial Director While antennas, also known as aerials, have been around since the birth of radio, it was always looked upon as a mundane passive component that must be...
Military takes aim at high battery costs
Apr 1, 2005
By Gregg Bruce and Brad Audette Today's United States military relies heavily on portable electronic systems in the battlefield. The fighting soldier might, for example, pack communications...
Products
Apr 1, 2005
Flexible electrical conduits with EMI/RFI shielding Electri-Flex Company offers three types of Liquatite flexible electrical conduits with EMI/RFI shielding....
FCC moves to regulate software radio
Apr 1, 2005
The Federal Communications Commission (FCC) has issued an order to prevent software-defined radios (SDRs) from being modified to the detriment of other...
Simulation testbench supports WiMAX system development
Apr 1, 2005
Cambridge Consultants has developed a WiMAX simulation testbench to support the launch of Aspex Semiconductor's reference code for implementing multi-antenna...
DVB-H architecture for mobile communications systems
Apr 1, 2005
By Stuart Pekowsky and Khaled Maalej The availability of new low-power, small form-factor digital video broadcast hand-held (DVB-H) demodulator and silicon tuner solutions now enable the reception of digital TV signals on hand-held devices where small displays and limited battery power are a fact of life. The requirement for improved video display functionality and support for multimedia applications makes DVB-H an attractive complementary technology to existing 3G in-band solutions....
