Power amplifiers boost radio links

Article Abstract:

United Monolithic Semiconductors of Orsay, France, has introduced two models of a high-power integrated integrated-circuit amplifer. The amplifiers, CHA5092 and CHA5093, operates over frequencies of 22-26 GHz and 24-26 GHz, respectively. The products, which are based on a GaAs pseudomorphic-high-electroc-mobility-transistor gate-length technology, can find a wide range of applications from commercial digital radios to military communications systems.

France, Product introduction, Microwave IC Amplifiers, Microwave amplifiers, United Monolithic Semiconductors

---

Analysis examines the effects of coupler mismatch

Article Abstract:

The effect of mismatch on 3-dB Wilkinson and 90-degree couplers has been investigated. The use of the 3-dB, 90-degree couplers for the parallel operation of a pair similar amplifiers was also determined at source- and load-mismatched conditions. The behavior of the multipoint network was characterized in terms of the reflection coefficient of the source and load impedances connected to each port.

United States, Science & research, Optoelectronic Isolators & Couplers, Optoelectronic devices

---

Similar abstracts:

• Abstracts: Thermal design ensures RF power-amp reliability. Choosing passive components for high-power amplifiers. Multi-harmonic method optimizes power amplifiers
• Abstracts: SMA connector system interchanges transition pins. MMIC amplifier powers 38-GHz links
• Abstracts: Converter circuit provides size and cost reduction. Variable pads embody new design approach

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.