RF & Microwave Industry News

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A Phase-coherent Frequency Synthesizer for Radar Applications Programmed Test Sources Inc. (PTS) Littleton, MA The procurement policy of the defense establishment has recently undergone some significant changes. Traditionally, only equipment that met military specifications was available, often leading to very expensive solutions. Despite this restriction, maintenance requirements and reliability/longevity...

High Isolation Switches with Integral Drivers Mini-Circuits Brooklyn, NY Solid-state switches are used extensively for routing or selecting RF and microwave signals. If the isolation between the selected and unselected ports is not high, leakage of unwanted signals could degrade the carrier-to-interference ratio. Several switches may have to be...

60 and 120 W, 2 GHz LDMOS FETs Ericsson Components, RF Power Products Morgan Hill, CA The dramatic increase in cellular traffic has necessitated the use of spread spectrum techniques such as time-division multiple access (TDMA) and code-division multiple access (CDMA). These modulation methods have significantly tightened the linearity...

A High Performance, Economical RF/Microwave Substrate Taconic, Advanced Dielectric Division Petersburgh, NY During the past decade, the wireless industry has evolved from a predominantly military-driven market to a cost-conscious, consumer-driven commercial market. At the same time, wireless applications are moving up in the frequency spectrum. For example, personal communications...

High Reliability Coaxial Microwave Switches Radiall Inc. Paris, France and Stratford, CT, USA An innovative new system has been designed for constructing electromechanical coaxial RF switches with increased long-term reliability. The Radiall Modular System for Electromechanical Switches (RAMSES) is a patented concept that enables microwave coaxial switches to be...

A Digital Quadrature IF Mixer Anaren Microwave Inc. East Syracuse, NY A digital quadrature IF mixer (DQIFM) combines two proven technologies to produce a single RF-to-digital solution for front-end conversion in microwave signal processing applications. The device incorporates broadband RF stripline technology with high speed digital conversion, providing an...

Trends in Mobile Telephony Services Tariffing Stefan Zehle Prodata Partners Ltd., London, UK Mobile telephony services tariffs and tariff structures are likely to change substantially over the next few years. The differences in mobile tariffs between countries are likely to disappear and tariffs offered by competing operators are likely...

The Wireless Decade: A European Survey Lucy Berridge, Stephen Stones, Peter Kingsland, Tania Harvey and Ross Parsons CIT Publications, Exeter, UK There is no doubt that European mobile communications markets are booming as never before. As ever, strong regional and national differences exist within this cross-European trend. Last year,...

The Role of Microwave Technologies in the Wireless Revolution Manuel del Castillo and Henry Valenzuela Andrew Corp., Orland Park, IL There is no doubt that we are in the middle of a wireless revolution that has been initiated by current digital mobile standards. This wireless boom has accelerated the...

mm-wave Microelectronics Manufacturing Kevin Danehy and Mark Wolf M/A-COM, a division of AMP Inc. Lowell, MA The question as to whether or not the telecommunications industry will fully utilize the promise of mm-wave technology is still highly debated. However, the development and interest in commercial mm-wave products have skyrocketed....