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DRIVEN BY ONGOING concerns over global warming and escalating energy costs, the demand for smart, radio-controlled devices to monitor, control, inform, and automate the delivery of energy and other resources [...]

In general terms, power amplifiers (PAs) used in communications systems must be large enough to amplify envelope peaks. This leads to amplifiers designed to offer the best efficiency at peak [...]

Improvised explosive devices (IEDs) represent an increasingly deadly threat to both ground forces and civilians. As opposed to traditional warfare activities where the enemy is readily identifiable, insurgents have concentrated [...]

Chirp measurements in radar applications are used to determine the quality of transmitted pulses. The primary quality indicators revolve around the need for the transmitted pulse to be free of [...]

Testing methods that can be used in different parts of a radar system lifecycle are discussed. Performance can be verified using arbitrary waveform generators and signal creation software.

Firms manufacturing radio frequency identification equipment will ensure the success of their products through pre-compliance testing. The real-time spectrum analyzer provides these companies a feasible pre-compliance testing method.

Signal identification is critical to many local and federal government groups for security, law enforcement, and intelligence applications. With the growing congestion of complex digitally modulated signals used in wireless [...]

THE COMBINATION of a broadband signal analyzer, vector signal generator, and software--along with additional components--can be used to accurately radar target signals for testing. Radar systems and technologies serve many [...]

Concepts behind ultra-wideband technology, its hardware and software architectures, and testing issues are discussed. The advanced testing of ultra-wideband signals can be done using state-of-the-art measurement instruments.

Evaluating the performance of an advanced radar system depends upon the capabilities of both the operator and the test equipment. The test gear must be properly specified to achieve accurate [...]

The article discusses the issue associated on the potential impact of long-term evolution (LTE) and radar system's coexistence to sensitive radar receivers. Topics discussed include the assessment of the wireless base station and user equipment's performance, the radio receivers of global navigation satellite systems (GNSS), and the use of digital radio frequency memory (DRFM) or radar echo generators (REG).

The article discusses the development of drone detection and location systems for commercial applications. Topics highlighted include the various industries benefiting from the technology including agriculture and businesses, and notes the significance of drones to the U.S. military in detecting and mitigating possible threats.

The article discusses measuring the effects of S-band radar systems on LTE wireless networks coexisting within the same frequency range. Coexistence is a concern for different S-band radar systems, especially in the U.S. An LTE network may experience disturbances due to performance degradation of an S-band radar system, resulting in an increase in the LTE network's block error rate (BLER).

The article focuses on the radar systems which are used in variety of commercial, industrial and defense applications. Topics discussed include research and development (R&D) regarding testing of radar systems, radar target generators which apply time delay, Doppler frequency, and attenuation to a radar signal, and Fiber Optic Delay Lines (FODL). Also mentioned are air traffic control (ATC), missile tracking, and quantization.

The article aims at analyzing the evaluation of spectrum analyzers from instruments that were used for measuring pulsed signals. It further discusses use of direct digital synthesis (DDS) for enabling the generation of wideband waveform. Various benefits of using DDS along with active electronically scanned antenna (AESA) technology includes frequency agility, multifuntionality and mode agility.

The article focuses on the integration of a ZigBee or other IEEE 802.15.4 radio into an embedded application, and the areas to be considered for regulatory compliance and validation of the device operation. It states that ZigBee communication protocols cover a range of devices including home automation and smart energy. It discusses the cost of engineering the radio circuitry and gaining regulatory approvals for modules, the development time, and limitations in adding custom features.

The article examines the use of the active load pull technology which simplifies ultrahigh frequency (UHF) testing and removes limitations and inaccuracies common to passive load pull measurements. It notes that open-loop, active load pull uses a separate coherent signal source to stimulate either the source or load side of the device under test (DUT). The open-loop system absorbs the signal and injects a signal that is generated by an independent source back into the device.

The article evaluates the commercial-off-the-shelf (COTS) test gear, a Software Defined Radar System (SDR).

The article focuses on the exploration of the relation and impact between the Long Term Evolution (LTE) cellular wireless networks and S-band radar system.

The article offers a brief look at mixed domain oscilloscope (MDO), a tool that can be used to identify noise sources in embedded designs that include radio frequency (RF) components. The world's first MDO, the MD04000 Series, was introduced by Tektronix. It tests a device that uses a flexible radio integrated circuit (IC) already integrated into a module along with a boost converter IC. The effects of powering the radio with a switching power supply is illustrated.