ISSUE DATE: DECEMBER 2003  OPTIONS
Wireless Show/Communications

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December 2003 - In This Issue

[Cover Story]
SiGe Fires Single-Chip Fractional-N Synthesizer
Silicon-germanium (SiGe) semiconductor technology has long held the promise of high-frequency operation with high levels of integration. The process technology made headlines in the early 1990s with claims of device transition frequencies that could...  — Jack Browne

[News]
Wireless Symposium Moves To San Diego
Wireless communications has become an integral part of the American lifestyle. Some parents wouldn't even dream of sending their children to school without their own cellular telephones. Wireless local-area networks (WLANs) represent one of the...  — Jack Browne

[Design Features]
Understanding Ultra Narrowband Modulation
Modulation advances have fueled more efficient use of bandwidth, although conventional modulation formats still require allowance for upper and lower sidebands around the carrier frequency. Ultra narrowband modulation, however, is an efficient form...  — Harold R. Walker

[Design Features]
Design Inset-Fed Microstrip Patch Antennas
Low-profile, low-cost antennas support the operation of many modern communication systems. Microstrip patch antennas represent one family of compact antennas that offers the benefits of a conformal nature and the capability of ready integration with...  — M. Ramesh , et al.

[Design Features]
Designing Short High Q Resonators
Resonators with high quality factors (Qs) are used throughout high-frequency circuits. For example, matching networks are most efficient when constructed with components having high unloaded Qs. By increasing the amount of stored energy to the loss...  — Dale D. Henkes

[Product Technology]
Read/Write RFID Chips Boast Large Memory
Radio-frequency identification (RFID) technology represents an invaluable tool for a wide range of industries, including in industrial, medical, and military markets. A company often associated with analog and digital recording technologies, Maxell...  — Jack Browne

[Product Technology]
High-Speed Synthesizer Spans 2.25 To 18 GHz
Sometimes specifiers become suppliers, especially when trying to meet demanding requirements. Such is the case with the Receiver Systems Division of Wide Band Systems (Rockaway, NJ). Often associated with military receiver components, and a...  — William Sullivan

[Product Technology]
HBT Amplifier Gains From InGaP Technology
Linear amplifiers with high gain serve a multitude of uses in wireless communications and other applications. Gain is generally applied in a system to overcome signal losses from other receiver components, such as power dividers, antenna couplers,...  — Mini-Circuits' Engineering Staff

[Product Technology]
Cables Extend Test Range To 65 GHz
Test environments impose two conflicting requirements on microwave cables that run between the instrumentation and the device under test (DUT). Flexible cables must withstand repeated twisting, bending, and general mishandling while also delivering...  — John Lewis

[Product Technology]
Meter Aids Compliance At Co-Located Sites
Measuring the RF field strength of a single transmitter co-located with a host of similar transmitters/emitters is by no means simple. The daunting task has resisted the best efforts of system operators since 2000 when the FCC announced expanding...  — Robert Johnson

[Editorial]
Waiting For The Wireless Rebound
Wireless technology came upon us in a flash during the 1990s. At first, it was the novelty of the cellular telephone, dialing a person rather than a place. Then the cellular telephone improved when it became "digital," and the rush was on to embrace...  — Jack Browne