Microwave Journal articles from May 1998

Microwave Journal archives from May 1998

Progress through microwaves. (1998 International Microwave Symposium)
May 1, 1998... We hope you are looking forward to attending the 1998 International Microwave Symposium (IMS) and Exhibition as much as we are! More than 40 members of the Baltimore and Washington DC/Northern Virginia Chapters of the IEEE Microwave Theory and...

Microwaves, Baltimore style. (1998 International Microwave Symposium and Exhibition to be held in Baltimore, Maryland)
May 1, 1998... The IEEE MTT-S International Microwave Symposium (IMS) and Exhibition will take up residence this year in Baltimore, Maryland's most famous city. The week's schedule, which skillfully combines an informative technical program with a number of...

Experience star-spangled Baltimore. (restaurants and other tourist attractions in Baltimore, Maryland)
May 1, 1998... Nestled along the Chesapeake Bay, Baltimore blends urban renewal with a markedly historic past and is known for its ethnic, cultural and artistic diversity. Founded in 1729 and incorporated in 1797, Baltimore is the 13th-largest city in the US....

Chip-size package technology for semiconductors.
May 1, 1998... Flip-chip assembly (FCA) technology has long been perceived as the ultimate solution for interconnecting die. Board space is minimized, electrical and thermal performance is enhanced and die packaging costs are avoided. In reality, the assembly...

A septum polarizer.
May 1, 1998... The septum polarizer (SP) as a linear-to-circular polarization converter was introduced in the late 1960s[1] and developed in the mid-1970s.[2] Later improvements in SP design were made using a mode-matching technique,[3] which produced better...

A versatile test bench for wireless RF/microwave component characterization.
May 1, 1998... Wireless product development requires many types of RF/microwave characterization measurements. These measurements cover the gamut from on-wafer testing to final system performance verification of a completed wireless product, such as a pager,...

Designing high speed paging systems.
May 1, 1998... Most current paging systems are based on the Post Office Code Standardization Advisory Group (POCSAG) protocol, which was designed originally for tone-only pagers and short numeric messages. The introduction of alphanumeric messaging has...

A CDMA LNA design using CAD techniques. (code-division multiple access; low noise amplifier; computer-aided design)
May 1, 1998... Amplifiers are one of the cornerstone building blocks in modern communications systems. Whether the system requirements call for a low noise circuit for receiver applications or a power amplifier for transmitter applications, the amplifier...

Behavior of GaAS FET pulsed IV characteristics.
May 1, 1998... The IV characteristics of GaAs MESFET devices acquired under a variety of pulsed conditions are compared. The results show that the differences between the static and pulsed characteristics are not due to thermal effects alone as is sometimes...

Getting back to the basics of oscillator design.
May 1, 1998... Oscillators are the misunderstood stepchild of microwave design. Definitive papers have been written on oscillators but, in many eases, their messages have been misinterpreted or extrapolated incorrectly. This article describes some of the more...

Multilayer bonding and fabrication guidelines.
May 1, 1998... Increased performance requirements packaging size and cost reductions have placed a new pressure on the RF design engineer and PCB fabricator to develop new and innovative solutions. One of the recent approaches to achieving these objectives is...

An active physical device simulator.
May 1, 1998... Circuit designers have enjoyed the benefits of sophisticated simulation tools for some time. However, these simulation programs are limited to circuit optimization and characterization and are forced to describe the active device by means of...

A dual-band AMPS/PCS duplexer.
May 1, 1998... Competition in the mobile wireless marketplace has become intensely competitive, particularly with the worldwide deployment of the digital communication system (DCS), personal communications service (PCS) and satellite networks. Wireless service...

CDMA RFIC upconverters. (code-division multiple access)
May 1, 1998... Few products are on a faster track than today's digital wireless handsets. Currently, the industry is scrambling to meet the demand for these improved telephones. As a result, component manufacturers must generate new devices that enable the...

A three-dimensional EM field solver for high frequency applications.
May 1, 1998... Until recently, designing RF, microwave and mm-wave circuits and components using electromagnetic (EM) field simulators was a luxury for the majority of engineers working in these fields. Today, thanks in part to more powerful and affordable...

A 2.2 to 2.4 GHz dual 8 x 2 switch matrix.
May 1, 1998... One of the key components of a phased-array radar system is the RF switching network that directs the various RF signals to and from the respective antenna elements. This switching matrix must be both phase and amplitude balanced to assure proper...

Antenna Theory - Analysis and Design.
May 1, 1998... This book's main objective is to introduce the fundamental principles of antenna theory and apply them to antenna analysis, design and measurement. This second edition contains new features, including a chapter devoted to microstrip antennas, and...

Design Centering Using Mu-Sigma Graphs and System Simulation.
May 1, 1998... Design centering is the process of selecting nominal operating parameters such that the greatest amount of variance can be accommodated without exceeding the given specifications. This book expands upon that concept to the design centering of...