advertisment Advertisement
advertisment Advertisement
advertisment Advertisement
advertisment Advertisement

Amplifiers

Amplifier products

ARTICLES

Nujira builds global presence by appointing new FAE manager of China

Nujira Ltd. has appointed William Tse as field application engineer manager in China.


Read More

Infineon Technologies supplies eight RF components for Samsung Galaxy S5

Infineon Technologies supports Samsung’s Galaxy S5 with a total of eight RF components, including LTE Low Noise Amplifiers (LNAs), Quad LNA banks, a GPS LNA and SPDT RF switches.


Read More

AR RF/MW Instrumentation to Join Distributor Corad Technologies as Exhibitors at EDI CON 2014

AR RF/MW Instrumentation, a world-class source for broadband high power, solid state, RF and microwave amplifiers will be promoting their solutions in the Test & Measurement (West) Hall of EDI CON. Their distributor, CORAD will be featuring AR components as well as their broader product lines in the Components (East) Hall.


Read More

AWR Graduate Gift proves PoweRFul resource for PhD Student

AWR Corp. has released a new customer success story that demonstrates how the AWR Graduate Gift Initiative played a role in helping Dr. Dominic FitzPatrick found PoweRFul Microwave.


Read More

Peregrine Semiconductor introduces first reconfigurable RF front-end system

Peregrine Semiconductor Corp. has announced UltraCMOS®Global 1, claimed to be the first reconfigurable RF front end (RFFE). For the first time, 4G LTE platform providers and OEMs will be able to save time and money by creating a single-SKU design for global markets.


Read More

LTE low noise amplifiers and LNA banks from Infineon

Infineon Technologies has introduced a new series of LTE low noise amplifiers and Quad LNA banks specially designed to enhance the data rate in smartphones.


Read More

Nujira selects ASE as packaging and test partner for handset ET chip

RFIC

Nujira Ltd.has selected ASE as its production packaging and test partner for its Coolteq.L family of High Accuracy Tracking Envelope Tracking ICs.


Read More

Nujira delivers 40 MHz bandwidth for 4G Envelope Tracking PA

Nujira Ltd.has successfully demonstrated in its latest lab tests that it is able to support 40 MHz channel bandwidths for 4G LTE-Advanced signals, using its NCT-L1300 ET modulator IC and a commercially available handset RF power amplifier.


Read More

Diamond Microwave launches compact high power GaN SSPAs

International

Diamond Microwave has announced the launch of ultra-compact high power solid state power amplifiers in X-Band and Ku-Band.


Read More

Amplifier Technology offers drop-in replacement for Army radio

International

When the terms of a military contract required drop-in replacements for an obsolete RF transmitter-amplifier Amplifier Technology reverse engineered the 25 year old technology and developed a 21st Century version that the customer could use with its existing battlefield radios.


Read More

DOCUMENTS AND FILES

Integrated GaN Amplifiers: An Optimized Solution for Mid-Level Broadband RF Power

A generation ago, easy-to-use GaAs HBT based RF Gain Blocks changed the way RF engineers designed small signal amplifiers. That same evolution is now arriving in GaN technology with simple broadband solutions to medium power requirements in the 5 to 25 Watt range. This power range appears in a wide array of customer requirements, from output stages in broadband land-mobile and military handheld radios, small cell linear finals, to drivers in larger military, EW, and infrastructure power amplifiers. Entering the realm of power amplifiers though obviously brings new requirements and challenges, among them cost, size, power efficiency, and difficult thermal limitations that drive their electrical and package design. This paper will review conventional solutions, explore the tradeoffs between discrete and monolithic MMICs, and highlight the unique benefits of this new hybrid SMT solution.

Practical Considerations for Low Noise Amplifier Design

Low noise amplifiers (LNAs) play a key role in radio receiver performance. The success of a receiver's design is measured in multiple dimensions: receiver sensitivity, selectivity, and proclivity to reception errors. The RF design engineer works to optimize receiver front-end performance with a special focus on the first active device. This paper considers device- and board-level variables that affect LNA performance and confront the engineer at each level of design in accommodating the various requirements of specific applications.

"S" Series Amplifiers Produce Higher Power, Higher Fidelity Signals For Testing Wireless Output Devices

As more companies take advantage of the benefits of wireless technology, output device manufacturers must depend on highly linear, quality test equipment to meet those demands. Wireless communications encompass a number of applications.

Switch-Mode RF PAs Using Chireix Outphasing

Mobile network operating costs are driving the requirement for increased infrastructure efficiency, particularly in the final stage RF power amplifier. The venerable Chireix outphasing architecture proposed in 1936 by Henry Chireix has been updated with Gallium Nitride HEMT transistors operating in class E, and shown to deliver class leading efficiency.

Combiners for Doherty Power Amplifier Architectures

Doherty combiner product line covers major communication bands ranging from 700 MHz to 2700 MHz. Each model is optimized for the center frequency of targeted frequency band. However, as new spectrum is being released, the pre‐designed standard models can be tuned in customer applications to meet performance. This document provides guidelines to tune these standard models for off‐band applications.

Increasing Power Amplifier Test Throughput

Engineers who test mobile power amplifiers and front end modules are looking for ways to reduce test cost through maximizing throughput while ensuring that the devices meet required performance levels. This application note discusses these complex issues and recommended solutions using the Agilent PXI M9381A Vector Signal Generator as an example.

RF Amplifier Output Voltage, Current, Power, and Impedance Relationship

The mismatch between these real loads and the amplifier's output impedance result in a percentage of the forward power being reflected back to the amplifier. In some cases, excessive reflected power can damage an amplifier and precautions that may affect forward power are required. This Application note highlights the major RF amplifier characteristics that impact forward power as well as net power allowing the use of Ohm's law, even when conditions are far from ideal.

Measuring Leakage Current in RF Power Transistors

The published specifications for leakage current in RF power devices are often a source of concern and confusion for engineers and technicians. This paper examines the real meaning behind the leakage current specifications and offers guidance on properly testing a device for leakage current.

Wideband 400W Pulsed Power GaN HEMT Amplifiers

RFMD has developed 400W pulsed output power GaN HEMT amplifiers operating over 2.9GHz to 3.5GHz band or 17% bandwidth. Under pulsed RF drive with 10% duty cycle and 100us pulse width, the amplifier delivers output power in the range of 401W to 446W over the band, with drain efficiency of 48% to 55% when biased at drain voltage of 65V.

Sign-In

Forgot your password?

No Account? Sign Up!

Get access to premium content and e-newsletters by registering on the web site.  You can also subscribe to Microwave Journal magazine.

Sign-Up

advertisment Advertisement