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TECHNICAL NOTES Shielding Formulas for Near Fields R.C. Hansen Consulting Engineer Tarzana, CA This article reviews extremely low frequency (ELF) formulas for magnetic shielding effectiveness. In particular, the simple three-term Schelkunoff formula is accurate at all frequencies if the proper near-field, or far-field, wave impedance is used. E lectromagnetic...

NEW PRODUCTS COMPONENTS *           Power Splitters The models PD22-73 power divider and HY22-73 90° hybrid are designed for the 2.1 to 2.3 GHz ISM band. The 50 W components offer low loss, high isolation and good phase/amplitude balance. The monolithic circuitry is 100 percent passive and available in...

AROUND THE CIRCUIT INDUSTRY NEWS *          Spacek Labs Inc. , Santa Barbara, CA, has completed its acquisition of the assets of millimeter-wave amplifier manufacturer Sierra Wireless Systems . Financial terms of the cash agreement were not disclosed. *          Gel-Pak , ® Sunnyvale, CA, has acquired Silicon Packaging Technology Inc....

NEW LITERATURE *          Product Brochure This six-page brochure describes integrated assemblies, converter assemblies, log components, log IFs, components, filter banks and switch filter banks. Product photographs are provided. Descriptions of the company's manufacturing and engineering processes are included, as well as a company mission statement. AKON, San Jose, CA...

NEWS FROM WASHINGTON Common Ground Station Approved for Full-rate Production T he Department of Defense (DoD) has approved full-rate production that will extend the acquisition program for the Motorola US Army Common Ground Station (CGS), a battlefield intelligence and reconnaissance ground processing system. The integrated, multi-workstation CGS is assigned...

INTERNATIONAL REPORT Martin Streetly, International Correspondent AMSAR Moves Forward E urope's three nation (France, Germany and the UK) Airborne Multi-role Solid-state Active-array Radar (AMSAR) has successfully passed its Phase 2A Critical Milestone Review (CMR), paving the way for the construction and testing of a Core Antenna Radar (CAR) demonstrator....

THE COMMERCIAL MARKET Second Satellite-to-car Broadcast Satellite Launched T he second of the three satellites of a constellation that will deliver digital-quality radio broadcasting to motorists throughout the US has been launched. The third operating satellite and a ground spare for the digital audio radio service (DARS) to be...

NEWS FROM WASHINGTON THAAD System Development Contract Awarded Raytheon Co. has been awarded a contract from Lockheed Martin Co. to design, develop and manufacture three Engineering and Manufacturing Development radars for the Theater High Altitude Area Defense (THAAD) system. The award is valued in excess of $1.4 B and...

INTERNATIONAL REPORT Martin Streetly, International Correspondent EADS Wins US Radar Contract T he European Aeronautic, Defence and Space (EADS) Co.'s Ulm, Germany-based Airborne Systems unit has been awarded a US$11.9 M contract by the US Navy (USN) that covers the supply of components for its AN/APG-65 radar programme. EADS'...

THE COMMERCIAL MARKET New Consortium Aims to Make TV More Personal and Interactive Microsoft Corp., DIRECTV Inc. and THOMSON multimedia have announced an alliance to bring a new advanced RCA ® DIRECTV™ system with the new Microsoft ® Ultimate TV™ service to market. The RCA DS4290RE system with Ultimate...