Topic
L band
About: L band is a research topic. Over the lifetime, 674 publications have been published within this topic receiving 4570 citations.
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01 Sep 2017
TL;DR: In this paper, a circularly polarized L Band antenna for terrestrial satellite observation services is presented, which is based on two crossed dipoles fed by a coaxial cable and a flat reflector to improve the characteristics of the radiation pattern.
Abstract: This work present an circularly polarized L Band antenna for terrestrial satellite observation services. The design is based on two crossed dipoles fed by a coaxial cable, and a flat reflector to improve the characteristics of the radiation pattern. The dipoles are implemented on PCB and the assembly is designed considering the weight and size constraints imposed by aerospace technology. Simulation results of the main characteristics of the antenna are shown as well as impedance and axial ratio measurements performed on a prototype built in FR4.
1 citations
01 Jul 2017
TL;DR: This paper presents the design and preliminary performance tests of an L-band synthetic aperture interferometic radiometer using the new sampling concept of clock scan to validate the concept of CS-MIR and solve the related technical problems.
Abstract: This paper presents the design and preliminary performance tests of an L-band synthetic aperture interferometic radiometer using the new sampling concept of clock scan. With the advantages of simple and deployable array structure, the concept of Clock Scanning Microwave Interferometric Radiometer (CS-MIR) has much potential to apply for the future Solar Polar Orbit (SPO) and Geostationary Earth Orbit (GEO) missions, where large antenna array with high angular resolution is the prime requirement. This L band demonstrator is developed to validate the concept of CS-MIR and solve the related technical problems.
1 citations
25 Jun 2006
TL;DR: Amplifier hybrid coupling different amplifier types is characterized and evaluated for application in S-band telecommunications in this article, where a fiber-optic parametric gain module is also studied for S-C/L band wavelength conversion.
Abstract: Amplifier hybrids coupling different amplifier types are characterized and evaluated for application in S-band telecommunications. Combinations including a fiber-optic parametric gain module are also studied for S-C/L band wavelength conversion.
1 citations
01 Jun 2018
TL;DR: In this paper, a model of an L-band radiocommunication system for the operating conditions of low-orbit satellites is characterized, and a study for the link budget calculation is proposed, to quantify the effects that alter the performance of the system.
Abstract: Specific factors affecting the satellite reception of messages transmitted by civil aircraft are analyzed. A kinematic model of the system, and a study for the link budget calculation are proposed, to then quantify the effects that alter the performance of the system. Finally, a model of an L-band radiocommunication system for the operating conditions of low-orbit satellites is characterized.
1 citations