Industry News

Emerging Technology and Market Trends for Frequency Controlled Circuits and Timing Devices

This article reports the current trends in timing solutions (timing devices and frequency control circuits) for modern electronic and communication systems, including the transition from discrete frequency sources to integrated circuits. Solutions that...
Current versions of handsets do not seem to be getting smaller as they are already quite small. In fact, some handsets are becoming bigger to accommodate more functions desired by consumers, such as DSC, DVC, MP3, GPS, Internet access, Bluetooth, DTV, etc. Opposite to the earlier thought that fewer...
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A Highly Linear Low Noise Amplifier

Design of a highly linear receiver low noise amplifier used to downconvert high power signals in conformance to modern wireless standards
In full-duplex communication systems such as W-CDMA, a receiver’s tolerance to unwanted transmit signals, including a co-located transmitter, is significantly important since transmission and reception occur simultaneously. Since transmit signals can be as little as 30 MHz away in frequency from the receive signal, surface acoustic wave (SAW) filters...
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Multiport Power Amplifiers for Flexible Satellite Antennas and Payloads

Use of multiport power amplifiers in satellite transponders allowing higher edge of coverage gains and more efficient use of the frequency spectrum
In the last few years, the architectural design of satellite communications payloads has benefited from the view point of flexibility, from the adoption of Multiport Power Amplifiers (MPA). Multiport power amplifiers offer a means to combine discrete amplifiers in a way that is reconfigurable and will degrade gracefully in...
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Bandwidth Improvement of a Single-stage Distributed Amplifier

A novel design of a single-stage microwave distributed amplifier is presented in this article. The design is based on the use of a Chebyshev polynomial to express the transducer power gain of the distributed amplifier. The obtained amplifier provides a considerable increase in the bandwidth as compared to both...
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A Dual-band CPW-fed Monopole Antenna for IMT-2000/WLAN

A novel and simple dual-band design of a coplanar waveguide (CPW)-fed monopole antenna is proposed. By adding lateral patches to the sides of a pentagonal monopole, multi-resonant modes with two separate broad operating bands can be generated for wirel...
Over the past decade, extensive research on broad dual- or multi-band antennas, with low-profile, lightweight, flush mounted and single-feed to fit the limited equipment space of portable wireless devices, has contributed to the development of modern communication technology. In the past, a whole host of dual- or multi-band planar...
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