Microwave Journal articles from February 1998

Microwave Journal archives from February 1998

GPS in 10 years. (Global Positioning System)(Special Report)
February 1, 1998... What will the Global Positioning System (GPS) look like in 10 years? This article discusses improvements to the overall GPS planned over the next decade and examines their impact on system performance for several applications. The Presidential...

Integrated resistor networks for high frequency multilayer PCBs. (polychlorinated biphenyls)
February 1, 1998... Planar resistor technology is used to integrate resistors into laminated PCBs to achieve higher packaging densities and improve electrical performance as compared to surface-mount components. This article examines the high frequency...

A symmetric cavity that saves energy during microwave processing of materials.
February 1, 1998... Successful microwave sintering of materials requires knowledge of both the evolution of the materials' properties and aspects of the electromagnetic fields during the microwave processing. The use of a symmetric cavity, where both the coupling...

Transistor technologies for RFICs in wireless applications. (radio frequency integrated circuits)
February 1, 1998... This article presents a multidimensional technical analysis of RF transistor technologies for RFIC applications in cellular and personal communications service (PCS) markets. The first dimension describes the circuit design of each function block...

Design and analysis of noiseless feedback amplifiers using S parameters.
February 1, 1998... One of the most important parameters in amplifier design is the linearity or dynamic range. Achieving a high intercept point (IP) with minimum bias current poses great challenges in portable radio transceiver design. Amplifiers using the...

Digital data signal spectral side lobe regrowth in soft saturating amplifiers.
February 1, 1998... Whenever digital data are transmitted via radio, it is critical to contain the transmitted power spectrum within allocated bounds. Regulatory agencies have developed many methods for specifying the allowed spectrum outside the nominal band...

Highly integrated IF ASICs for CDMA cellular/PCS telephones. (Application-specific integrated circuits; code-division multiple access; personal communications services)
February 1, 1998... The first generation of cellular and personal communications service (PCS) telephones based on code-division multiple access (CDMA) relied on limited integration of RF and IF functions. ICs were designed to handle automatic gain control (AGC)...

RF wideband silicon MMICs. (radio frequency; monolithic microwave integrated circuits)
February 1, 1998... The recently developed Double Poly process for manufacturing wideband silicon RF transistors and MMICs has been enhanced to include inductance loops, capacitors and resistors on chip. The result is a new family of MMICs that help reduce costs and...

An integrated GPS receiver RF front end. (Global Positioning System; radio frequency)
February 1, 1998... Global Positioning System (GPS) receivers are being used currently in many diverse applications, including low cost, battery-operated commercial applications that require inexpensive, high performance integrated components. The model PH1575 GPSRx...

A DC to 40 GHz ceramic MMIC package. (monolithic microwave integrated circuit)
February 1, 1998... Today's MMICs are being produced for applications in the mm-wave region including digital radios, local multipoint distribution systems, satellite communications and multipoint video distribution systems. One of the performance-limiting factors...

Fundamentals of Applied Electromagnetics.
February 1, 1998... The changing electrical engineering curriculum has resulted in the need for traditional electromagnetics (EM) to be taught to undergraduate students in a one-semester course instead of two. This book is designed to fill that need. The text covers...

RF Systems, Components and Circuits Handbook.
February 1, 1998... Many of today's most important RF systems, such as cellular telephones, fiber-optic systems, digital satellite television and the Global Positioning Satellite system, did not even exist 10 years ago. Hence, there now is a need for an up-to-date...