amplifier
RSS amplifierMulti-Carrier WCDMA Basestation Design Considerations - Amplifier Linearization and Crest Factor Control
White Paper Two topics will be the main focus of this discussion; the power amplifier linearization and the peak-to-average power reduction of a multi-carrier WCDMA signal, both of which are important for efficient operation of... [02 Mar 2004]
Amplifier Anatomy
White Paper After an audio signal has been mixed, equalized and otherwise processed at a standardized line level, it is sent to the power amplifier. What do power amplifiers do? Power amplifiers drive loudspeakers. [25 Feb 2004]
A High Linearity, High Efficiency WiMAX Power Amplifier Using SiC MESFETs
White Paper This paper describes the results of a broadband, high linearity, high efficiency power amplifier for WiMAX basestation applications in the 3.3 - 3.9 GHz band. Using SiC MESFETs, a single-stage power... [10 May 2006]
TriQuint Designs Power Amplifier 2X Faster and More Accurately Using Visual System Simulator
White Paper The challenge was to design an EDGE/GSM power amplifier for a cellular handset. It was essential to accurately characterize the power amplifier's circuit performance at the system level and to accurately... [10 May 2006]
Advanced Design Methods of Doherty Amplifier for Wide Bandwidth, High Efficiency Base Station Power Amplifiers
White Paper This paper has proposed advanced design methods of Doherty amplifier for high efficiency base station power amplifiers with wide bandwidth. First, the paper develops Doherty amplifier with uneven power... [11 Jul 2008]
The Performance of OFDM-SDMA Systems With Power Amplifier Non-Linearities
White Paper Amplifier nonlinearities affect drastically the performance of Orthogonal Frequency Domain Multiplexing OFDM systems. In this paper, the effects of amplifier nonlinearities is evaluated in OFDM with... [11 Apr 2007]
A Biosignal Amplifier Design for Bluetooth
White Paper At the same time, two projects underway in the Mindgames Group at Media Lab Europe are in need of exactly that: a wireless biosignal amplifier. Paint Affects and a handheld version of Relax-To-Win both would benefit from... [12 Aug 2005]
Low Cost Multi-Port Reconfigurable Erbium Doped Cladding Pumped Fiber Amplifier
White Paper We present a new erbium-doped fiber amplifier, which is effectively eight separate rate amplifiers. A single multi-diode source cladding pumps all eight Er/Yb fibers. We demonstrate cross-talk free WDM application, as... [25 Feb 2004]
Novel Approach Yields 100-mW Bluetooth Amplifier
White Paper Bluetooth applications in the high-power 100m range require an amplifier capable of 100mW of output power at 2.4GHz. In contrast to traditional design techniques, a power amplifier (PA) developed by... [25 Feb 2004]
Understanding Operational Amplifier Specifications
White Paper Selecting the right operational amplifier for a specific application requires you to have your design goals clearly in mind along with a firm understanding of what the published specifications mean. As an example, two... [25 Feb 2004]
Microfluidic Lock-In Amplifier for Ultra-High Sensitivity Detection of Antigens / Biowarfare Agents
White Paper A novel integrated, fluorescence device is being developed for the rapid, ultra-sensitive detection of antigens or biowarfare agents. The high sensitivity is achieved by using a lock-in amplification technique to selectively amplify the... [24 Feb 2005]
Effect of Power Amplifier Impairments in Designing OFDM Based Wireless Communication Systems
White Paper New generation Wireless Local Area Network (WLAN) standards (like 802.11a and HyperLAN2) use Orthogonal Frequency Division Multiplexing (OFDM) modulation technique because of its ability to offer high data rates while combating the... [02 Nov 2004]
Peak-Power Reduction in OFDM Without Explicit Side Information
White Paper A problem arising in any transmitter are non-linearities of the power amplifier which result in out-of-band radiation, when the transmit signal at the amplifier's input has large amplitudes. This paper... [26 Jul 2005]
Wireless Microphones
White Paper Wireless microphone systems are designed to replace the cable that usually tethers a wired microphone (or any acoustic transducer) to an amplifier. The transmitter "sends" a signal to an associated receiver which is... [25 Feb 2004]
OFDM Link Performance With Companding for PAPR Reduction in the Presence of Non-Linear Amplification
White Paper Use of companding for Peak-to-Average-Power Ratio (PAPR) control is explored for a link involving a non-linear transmit power amplifier with Orthogonal Frequency Division Multiplexing (OFDM). This paper considers the use... [13 Apr 2007]
