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Industry News

An Algorithm that Accelerates Harmonic Balance Analysis of RFICs

For mobile phones, WLAN and other wireless applications, RF engineers need to perform sophisticated IC designs under strict time-to-market constraints. To make this possible, with as few prototyping cycles as possible, RFIC design tools must incorporate efficient methods for analyzing circuit behavior, accurate semiconductor models and flexible system modeling...
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New Physical Connectivity Engine for Native High Frequency Interconnect Verification

Microwave engineers have been forced to verify the validity of their high frequency design interconnects either by manual inspection or by using layout versus schematic tools designed for analog/digital design. Such tools, which are well established for low frequency design, tend to be less than optimal for high frequency...
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Making of a Robust Indoor Microwave Wireless Link: A Novel Scheme of Polarization-sense Diversity

This article describes a novel scheme of deploying “polarization-sense” diversity in indoor microwave wireless links. Unlike the traditional polarization diversity scheme where two orthogonally polarized (vertical and horizontal) antennas are used, thi...
The state-of-the-art indoor wireless systems operating at microwave frequencies (approximately 2.45 and 5.5 GHz) have been standardized in conformance with different multiplexing schemes and modulation techniques. The underlying design considerations 1,2 aim at realizing robust operation of several interconnected and coexisting hosts 3 across RF links. These links are...
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Averaging Correlation for Fast GPS Satellite Signal Acquisition in Multipath Rayleigh Fading Channels

In this article, a fast GPS satellite signal acquisition, based on an averaging-correlation algorithm, is proposed for frequency-selective multipath Rayleigh fading channels. In the Global Positioning System (GPS), receivers spend a long time acquiring...
The Global Positioning System (GPS) is a worldwide satellite navigation system, which consists of a constellation of 24 satellites and their ground stations. GPS signals are specially coded satellite signals that can be processed in a GPS receiver. When receiving the signals from at least four satellites, a receiver...
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Communications Satellite Antennas with On-orbit Pattern Flexibility

Commercial communications satellite operators face a difficult problem. In the rapidly evolving global telecommunications industry, entire market segments can emerge, thrive, change and disappear during the fifteen-year on-orbit lifetime of a modern communications satellite. To address these changing market needs, it would be desirable to have a communications payload...
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IMS 2004 in Cowboy Country

Texas hospitality was definitely in abundance as the participants descended on Fort Worth for IMS 2004. Hot, humid weather and more rain than was comfortable did not dampen the enthusiasm or diminish the attendance at the MTT-S International Microwave Symposium held June 6 to 11. Overall attendance fell just...
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New Products

High Performance Spectrum Analyzers The PSA series of high performance spectrum analyzers is for designers of WLAN, satellite communications and radar systems, as well as amplifiers for 3G wireless systems. The recently added two optional enhancements broaden bandwidth and analysis capabilities. The enhancements include a digitizer that enables signals...
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Around the Circuit

Industry News L-3 Communications , a defense contractor, announced that it will acquire Cincinnati Electronics , a provider of military infrared imaging sensors and space launch electronics, for approximately $172 M in cash. Cincinnati Electronics’ customers include the US Army, US Air Force, US Navy and US Marine Corps....
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New Literature

Application Note Application Note 1471, “RF/IF-to-Digital Connected Solutions Bit Error Rate Using the Advanced Design System,” is a 24-page note that explains how connected solutions can help bit error rate verification applications for RF/IF-to-digital receiver topologies. Agilent Technologies Inc., Palo Alto, CA (877) 424-4536, www.agilent.com. Amplifier Brochure This amplifier...
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Software Update

EDA Software Release This Advanced Design System (ADS) 2004A is a recent version of the high frequency electronic design automation (EDA) software that offers significant improved ease-of-use and productivity for common circuit-design tasks. ADS 2004A offers a complete, front-to-back high frequency design, simulation, layout and verification solution in a...
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