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The article delves into the intricacies of satellite communications (satcom) and space applications, focusing on RF (Radio Frequency) transmitters and receivers, their block diagrams, and the essential components in RF systems. It elucidates the role of RF signals in transmitting information from the point of origin to the intended target, emphasizing the analog RF portion of communication networks.

The article discusses the increasing interest and investment in commercial space satellite systems, particularly focusing on the challenges and trends associated with low earth orbit (LEO) satellite communications system design. Topics include the economic benefits of LEO satellites, trends driving satcom systems adoption (ubiquitous connectivity, disaster recovery communications), and challenges such as signal latency, power amplification, interference management, and Doppler effe.

The article discusses the importance of radio frequency over fiber (RFoF) in military communications and autonomous military systems in the U.S. Topics discussed include RF bands that are being used in military communications, the use of RFoF technology to transfer electromagnetic signals over fiber optic links through amplitude modulation, and military applications for antenna remoting with RFoF including satellite communication, radar systems and covert surveillance.

The article focuses on phase noise in orthogonal frequency division multiplexing (OFDM) radar and satellite communication systems, demonstrating its impact on system performance metrics like error vector magnitude (EVM) and providing insights into the influence of phase noise on subcarrier constellations. It discusses the integrity of OFDM signals in aerospace, defense, and communication applications, providing calculations and empirical data to evaluate clock sources' performance.

The article focuses on the U.S. Department of Defense's Space Development Agency (SDA) and its efforts to develop a more robust and defendable military space-based communications and sensing system. Topics include the Proliferated Warfighter Space Architecture (PWSA), partnerships with non-traditional entities, functional layers of the PWSA, and the importance of RF and microwave technologies in enabling the mission.

The article presents the discussion on cutting-edge RF and microwave products from different manufacturers including antenna measurement solutions, RF amplifiers, and frequency control devices.

The article evaluates a range of products including the 5G Low Noise Amplifier from Fairview Microwave, the Rack-Mount Attenuator from JFW Industries and the Solid-State Switches from Quantic PMI.

The article informs that military and government organizations are increasingly eying Low Earth Orbit (LEO) satellites for military applications. It is noted the viability of LEOs for aerospace and defense will depend on performance assurance throughout development, launch and the mission. In addition to ensuring security, LEOs need to maintain exacting performance despite challenges from weather, the environment.

The article presents the discussion on U.S. and European operators planning mobile satellite communications (MSC) systems providing voice and data connectivity around the globe. Topics include service requiring a new satellite constellation in either medium earth orbit (MEO) or low earth orbit (LEO); and Iridium NEXT satellites expanding MSC services for maritime, aviation, land and government applications.

This article describes the global international Cospas-Sarsat satellite distress and safety system (SDSS) integrated with low earth orbit (LEO), medium earth orbit (MEO) and geostationary (GEO) satellite constellations that provides services at sea, on land and in the air. The Cospas-Sarsat space segment integrated with the near-polar LEO constellation is known as the LEOSAR subsystem, the space segment integrated with the MEO is known as the MEOSAR subsystem and the space segment integrated with the GEO constellation is known as the GEOSAR subsystem. Similarly, the Cospas-Sarsat ground segment consists of local user terminal (LUT) stations, known as the LEOLUT, MEOLUT and GEOLUT subsystems, and the associated regional Mission Control Centers (MCC) connected with the Rescue Coordination Center (RCC) and local Search and Rescue (SAR) infrastructures. This article also reviews satellite repeaters providing SDSS service via satellite beacons known as emergency position indicating radio beacons (EPIRBs) for maritime, personal locator beacons (PLBs) for land, personal and emergency locator transmitters (ELTs) for aeronautical applications. In addition, types of satellite beacons and testers, LUT receivers with antennas, the Cospas-Sarsat Data Distribution Plan and the Alert Data Distribution and Operating System are described. [ABSTRACT FROM AUTHOR]

The article focuses on Beamformer RFICs Meet Commercial Space Screening.

The article offers report on Satellite increase of services to Internet of Things devices in rural area. Topics include the Non-terrestrial networks (NTN) such as satellite constellations or high altitude platforms provides wide area service coverage and long-term reliability; produces services to areas not covered by 5G networks, such as rural and remote areas; and important to provide service continuity for machine-to-machine (M2M) or IoT devices as they exhibit critical communication.

As we usher in the age of large capacity wireless access systems demanding high spectral efficiencies, array antennas are playing an increasing role. MIMO antenna arrays have become integral to the standards for cellular and wireless local area networks. These active antenna arrays will play an equally important role in next-generation high throughput satellite (HTS) communications. Also, the large low Earth orbit (LEO) and medium Earth orbit (MEO) constellations planned by companies like OneWeb, Telesat, SES and SpaceX will need ground terminal antennas that track multiple satellites. This convergence of trends is driving a shift from passive antennas with static fixed beam patterns to fully steerable, active smart antennas. In this article, we discuss the advantages of digital beamforming (DBF) for capacity, control and flexibility. Until now, DBF was largely a concept because of the cost and complexity to implement a usable solution. We will describe a commercial ASIC implementing DBF with true time delay (TTD) that realizes its potential. DBF combined with an integrated RF front-end (RFFE) enables modular electronically-steerable multi-beam array (ESMA) antenna systems for a wide range of applications. [ABSTRACT FROM AUTHOR]

The article reports that the Defense Advanced Research Projects Agency (DARPA) has awarded BAE Systems' FAST Labs invests for the Oversight Autonomous Space-Based Target Custody program. It mentions the program aims to address challenges in traditional space intelligence, surveillance, and reconnaissance (ISR) collection by developing satellite systems capable of dynamically re-evaluating and quickly adapting to new space systems.

The article provides insights into current satcom trends and approaches to Ka-band power amplification. It mentiond that many companies are focusing on higher frequency Ka-band which provides more allocated spectrum for applications such as internet access and 5G; and also mentions that responding to the increasing demand, the satcom industry has moved to higher-frequency bands, where more bandwidth is available.

The article discusses various developments associated with the microwave industry. Rohde & Schwarz has acquired Great Britain-based the Technology Academy, a long-established provider of online training courses in the fields of radio frequency, wireless and microwave engineering technology. Smart antenna start-up ALCAN Systems and AGC Inc. announced the successful development of transparent antennas for indoor mmWave Fixed Wireless Access.

The article focuses on Eravant has been renewing itself since Wendy Shu became chief executive officer in 2019, taking the management reins from her father Yonghui. Topics include the commitment to commercialize mmWave technology through technical leadership and great products has not changed, and the processes and facilities that will enable Eravant to sustain its growth and reputation for responsiveness.

The article discusses approval given by the Federal Communications Commission (FCC) for the launch of low earth orbit (LEO) satellites to provide internet of things (IoT) services. According to the author, the FCC has officially allowed users in the U.S. to tap into signals from the Galileo satellite navigation system following requests made by SpaceX, Kepler and LeoSat.