Amplifiers

An X-band, High Power, MMIC-based Microwave Amplifier

Introduction to a new high power, MMIC-based microwave amplifier produced to supply 30 W of saturated output power between 8 and 11 GHz
Product Feature An X-band, High Power, MMIC-based Microwave Amplifier Milmega Ltd. Isle of Wight, UK When established performance ranges are extended, it is often a simple case of developing and building on the original technology. Not so for the AS 80110/30 microwave amplifier, which has been produced to extend...
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SOI CMOS Technology For RF System-on-chip Applications

Overview of current advances in silicon-on-insulator (SOI) CMOS technology, including reduction in cross-talk between RF and digital circuits and integration of high quality passive elements
Technical Feature SOI CMOS Technology For RF System-on-chip Applications CMOS technology is one of the most promising choices for RF applications. Its highly integrated nature provides true RF system-on-chip integration. Silicon-on- insulator (SOI) CMOS offers specific additional design advantages that include a significant reduction in cross-talk between RF and...
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A Feedforward Power Amplifier with Loops to Reduce RX Band Noise and Intermodulation Distortion

Introduction to a new power amplifier developed to reduce amplified noise and intermodulation distortion signals using a feedforward technique
Technical Feature A Feedforward Power Amplifier with Loops to Reduce RX Band Noise and Intermodulation Distortion This article proposes a new power amplifier approach for the reduction of amplified noise signals in the receiver (RX) band as well as intermodulation distortion signals in the transmitter (TX) band using a...
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A High Efficiency, Low Cost Silicon Bipolar GSM Dual-band PA Module

Presentation of the design and measurement data for a PA module using silicon RF-IC bipolar chip technology on a simple ceramic substrate
Technical Feature A High Efficiency, Low Cost Silicon Bipolar GSM Dual-band PA Module T. Johansson, P. Lundin, J. Engvall and D. Uggla Ericsson Microelectronics AB Kista, Sweden U. Hagström Ericsson Microwave Systems AB Mölndal, Sweden As the wireless communication business continues to expand, there is great demand for reducing...
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An Ultra-linear 3G Power Amplifier

Development of an ultra-linear power amplifier that operates from 2110 to 2170 MHz and delivers 15 W of output power with 45 dB of gain
Product Feature An Ultra-linear 3G Power Amplifier Unity Wireless Systems Corp. Burnaby, B.C., Canada Fig. 1 The amplifier's typical intermodulation performance. Third Generation (3G) wireless is the next phase in wireless communications, defined by the migration to packet-switched networks at high speed data rates. 3G capability will be a...
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Regrowth of Data Spectral Sidelobes from AM/PM Effects and Hard Limiting

Framework for analyzing and predicting the power spectral sidelobe regrowth from soft saturating amplification of data signals having small percentage carrier ripple
Technical Feature Regrowth of Data Spectral Sidelobes from AM/PM Effects and Hard Limiting Frank Amoroso Santa Ana, CA A previous article 1 set forth a framework for analyzing and predicting the power spectral sidelobe regrowth from soft saturating amplification of data signals having small percentage carrier ripple. The results...
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Lossy Linearizers for Reduction of Nonlinear Distortion

Description of a technique used for reducing distortion components in nonlinear electronic or electro-optic devices
Technical Feature Lossy Linearizers for Reduction of Nonlinear Distortion This article describes a technique for reducing distortion components in nonlinear electronic or electro-optic devices. The linearizer circuits are capable of generating both even- or odd-order distortion, or any combination thereof. Both compressive (180°) and expansive (0°) nonlinearity can be...
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A Compact High Power SSPA for Satellite Communication Applications

Development of the first compact 1000 W C-band SSPA for satellite up-link applications
Product Feature A Compact High Power SSPA for Satellite Communication Applications Advanced Microwave Technologies Inc., ADVANTECH Dorval, QC, Canada Today's emerging satellite broadband applications require high power amplifiers. In recent years, significant advances have been made in solid-state technology that have resulted in solid-state power amplifiers (SSPA) becoming a...
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Advanced RF Technologies for the Wireless Market

Detailed overview of the different architectures available for transceiver ICs with greater emphasis on near-zero IF configuration
Technical Feature Advanced RF Technologies for the Wireless Market Yvan Droinet Philips Semiconductors Caen, France Most products in the wireless world require more and more miniaturization. This incentive leads integrated circuit designers to develop innovative architectures with higher and higher integration levels. On the one hand, there is a...
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Spectrum Monitored Adaptive Feedforward Linearization

A method of maintaining a high level of cancellation of the distortion of a signal generated by a power amplifier
Technical Feature Spectrum Monitored Adaptive Feedforward Linearization This article describes a method of maintaining the best cancellation of the distortion of a signal generated by a power amplifier. Prior papers and patents have proposed various linearizer structures and control algorithms. The design presented here consists of a feedforward linearizer's...
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