Feature Articles

  1. Network Coverage At Its Best: Tower-Mounted Amplifiers

    Cellular network operators are continuously trying to find cost-effective ways to improve network performance. The introduction of remote radio head (RRH) modules provides a less expensive solution by placing all the active RF components at the top of the base station tower. However, since this solution can’t be used in every situation, there is a need for tower-mounted amplifiers that can provide increased capacity and better coverage. Appropriately installed tower-mounted low noise amplifiers in the BS uplink will significantly improve receiver system sensitivity when installed as close as possible to the receive antenna.

  2. Growth Of The Connected Home: The Home Platform Perspective

    A connected home, smart home, or home automation is a center for connectivity and sensor solutions. This market is poised for substantial growth, even though mainstream adoption may be years away. It is also an important opportunity for consumer product manufacturers to learn how to deliver products that are differentiated with new functionality and connectivity. As of right now, there is no single approach or obvious leader within the market, so it is important to build a business model and industry approach that has strong relationships, is adaptable, and will not confuse customers. This white paper discusses the new challenges in the adoption of the smart home industry, and describes TE’s business model, their planned approach, and advantages.

  3. The Role of Sensors For The Connected Car

    In many in-vehicle systems, car-to-car and car-to infrastructure systems, and automated driving systems, new mobility concepts and stricter emission legislations are requiring more networking along with a higher level of process control. For this reason, many vehicle systems have been advanced from open-loop control to closed-loop control strategies, which increases the number and relevance of sensors. In this white paper, TE covers relevant trends and examples of innovative automotive sensors that support closed-loop control functions in exhaust gas after-treatment, transmission, and battery monitoring.

  4. De-Confliction Filtering In Communication Systems

    The dense signal environment in which radio communication systems work becomes even more challenging with the shift to higher capacity links needing wider bandwidth in which to operate. Signal spreading caused by intermodulation in the transmitter and receiver requires either extremely linear devices or suitable filtering to avoid interference. One such environment is that experienced by tactical communication systems operating in the 200-450MHz frequency range. Radios operating in this band can generate harmonics, broadband noise and intermodulation distortion that could interfere with other systems at adjacent frequencies. Transmit filtering is used to mitigate these effects, but the number of possible channels and the passband width of each requires a tunable filter to meet the flexibility required. Teledyne Defence produces tunable filters across a range of applications and frequency ranges for such applications.

  5. Internet of Things – Value And Waves

    The Internet of Things (IoT) is a gateway to understanding how to communicate with technology, and how technology can provide more in depth information about everything. It is an umbrella for many wireless technologies, covers a broad set of applications, and is targeted to specific vertical markets. Many developers are now creating IoT products using Altair’s electromagnetic simulation tools and system level modeling solutions. This article discusses the three waves predicted for the development of connected devices, and how Altair is positioned to help growth in this industry.

  6. Taking Advantage Of RFID’s Expanding Role In Medical Devices

    If one only considers RFID capability as a data carrier, comparable to a bar code, the technology’s growing dynamism is overlooked. With expanded features, greater computing power, lowered costs, and rich data streams, medical and healthcare RFID is innovative, disruptive, and transformative to processes and, potentially, to entire business models.

  7. Understanding The Limitations Of Modern Military Radio Testbeds

    Military radios are typically tested together in a closed mesh network, with programmable attenuators used to vary the attenuation and simulate different distances between the radios. While this test platform (i.e., military radio testbed) enables test engineers to conduct rigorous, transparent, and replicable testing of military radios, it is not without its limitations: namely the size of the mesh network, or, in simpler terms, the number of radios that can be tested together. This white paper discusses how JFW Industries specially designs and manufactures a wide range of solutions for testing military radios.

  8. The Strange Case Of Dr. Modeling And Mr. Simulation

    Simulation is typically used for analyzing and optimizing the nominal configuration of devices like antennas to assess the electrical performance of the device for its desired application. However, simulation cannot necessarily provide performance data when the matter under consideration is designed for use on a satellite or something else. Modeling tools can then be used to synthesize an equivalent model of an antenna using its design specifications as input data so that its position and performance can be analyzed while on a platform.

  9. Scaling The Test Equipment Size To Match Millimeter Wave Test Needs

    Millimeter wave frequencies, traditionally dedicated to military applications with some commercial use for point to point microwave links, now can be used for commercial / consumer electronics. This paper discusses issues of transferring millimeter wave signals through coax cable within a test system and the benefits of improved measurement accuracy by reducing the size of the test equipment and using fewer interconnections.

  10. Is Your Spectrum Monitoring Tool Prepared For Modern Communication Technologies?

    With new applications, technologies, and standards being developed and deployed, there is increasing value placed on monitoring the wireless spectrum by both public and private stakeholders. Those who own the rights to a portion of the spectrum actively attempt to protect and maximize the utility of their investment, while regulators strive to promote efficient use and minimize interference among users. What was once an engineering technician’s duty has now very often become the dedicated responsibility of a multifunctional team. This article discusses today's spectrum monitoring requirements, and the most efficient processes for capturing, analysis, storage, and how the RTSA7550 Spectrum Analyzer is ideal for these requirements.