Newsletter | October 6, 2020

10.06.20 -- Spotlight On Amplifiers/Transistors

 
Featured Article
Spotlight On Amplifiers/Transistors
EMC Test System Power Amplifier Checks

This article describes a test procedure where the small signal performance data of an amplifier is gathered and checked against previously recorded data. This is a fault-finding step that establishes the health of the preamplifier.

A Comparative Review Of GaN LDMOS And GaAs For RF And Microwave Applications

Gallium nitride (GaN) is widely viewed as a transformative technology that has enabled smaller, lighter, and more reliable RF/microwave devices than its predecessors. However, there are trade-offs to consider when selecting which technology to use for a particular application. 

Using A GaN HEMT Pulsing Circuit

The main challenge of drain pulsing is the high current on the drain side and switching time that can be achieved. This application note provides an overview of a circuit used to achieve 1.9 uS turn on time for a high-power (20 A peak) device using drain pulsing.

Resources
Power Amplifier Modules Drivers And Subsystems

API Technologies uses both in-house chip and wire (hybrid), thin film, and SMT technology in their power amplifiers. These amplifiers operate over frequencies up to 26 GHz with output levels from 500 mW to 1 kW.

Amplifier Classification A Vs. AB

Amplification devices can be biased in different ways that affect performance and efficiency. This is called the class of operation. Class A, B, or AB are commonly used and referred to in specifications for high-power RF and microwave amplifiers. 

Ka-Band Satcom Trends And Power Amplification Challenges

Thanks to advances in semiconductor technology, GaN PAs have increased performance and are now an attractive alternative to high-power vacuum tube amplifiers. This article provides insights into current satcom trends and approaches to Ka-band power amplification.
 

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Featured Products And Services
400 To 6000 MHz, Broadband, Low-Noise Amplifiers

The SKY67183-396LF and SKY67189-396LF are ultra-broadband, low-noise amplifiers designed for FDD and TDD 4G LTE and 5G NR systems. With features such as superior gain flatness, exceptional linearity, and an internal active bias circuitry, these LNAs offer the ability to externally adjust supply current and provide stable performance over temperature and process variation.

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Skyworks Solutions, Inc.
30 To 88 MHz TxRx Booster Amplifier

AR’s Model AR-50SE is designed as a fully automatic band-switching RF booster amplifier for multi-band tactical radio equipment. Covering the 30 to 88 MHz frequency band, this amplifier uses high-speed, auto-switching filters to assure harmonic suppression.

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AR Modular RF
6000-Watts CW, 80 To 1000 MHz Solid State Amplifier
AR’s 6000W1000 is a solid state amplifier covering the 80 to 1000 MHz frequency range. When used with a sweep generator, it provides a minimum of 6000 watts of RF power. Like most of AR’s amplifiers, this model is ideal for applications that call for instantaneous bandwidth and high gain.
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AR
Pulsed Klystron Amplifier

CPI Microwave Power Products (MPP) offers the VKS-8262 series of klystrons for use in particle accelerators for scientific, medical, and industrial applications. These klystrons provide up to 7.5 MW peak at 2.856 or 2.9985 GHz at various RF pulse lengths and duty. Versions are available with up to 36 kW of average output power at 2.856 GHz and 72 kW at 2.9985 GHz.

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Communications & Power Industries, Beverly Microwave Division
LTE Band 2838 Switched MIMO Amplifier

The CMIPAS-MIMOB28B38 is a MIMO amplifier that can be operated as a Band 38 TDD amplifier or a Band 28 FDD amplifier. The specific operating mode is controlled by discrete digital bits.

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Corry Micronics, Inc.
Integrated Digital Control Unit

The dB-9004 integrated digital control unit (IDCU) is designed to operate in the C-, X-, and Ku-band frequency ranges to provide highly accurate RF output, which can be FM, AM, and pulse shape modulated. The DCU is capable of controlling its internal RF source and other external RF equipment such as antennas and amplifiers.

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dB Control
Modular Instrumentation Amplifiers

The new PTCM series of traveling wave tube (TWT) modular instrumentation amplifiers are used for a variety of applications including EMC/radiated immunity, communications, EW, radar, and RF component testing in the DC to 40 GHz frequency range, up to 50 kW.

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TMD Technologies