Ceramic Microwave Circuits for Satellite Communication

Abstract

KERAMIS is the acronym of a German research and development project funded by the German Space Agency (DLR) and the Federal Ministry of Economics and Technology (BMWI). The consortium is developing an RF circuit technology for Ka band multimedia satellite applications. A set of modules has been designed, manufactured, and tested by the partners of the consortium. The goal of this effort is to qualify the KERAMIS technology for space applications and to participate in an on-orbit-verification (OOV) program of the DLR. The launch of the technology verification satellite (TET) is scheduled for late 2010. This paper will give an overview of innovative circuit and module designs as well as the assembly, integration, and test results of the project. The authors will present a modular circuit concept for state-of-the-art transmitters and receivers in space at around 20 GHz. Selected modules are a 4 × 4 switch matrix, two synthesizers, and other RF modules. All circuits are based on multilayer ceramic (LTCC) including passive components, transitions, housings, and DC supply.

Advancing energy storage and supercapacitor applications through the development of Li+-doped MgTiO3 perovskite nano-ceramics

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“…Electrical pin is used in electrical poles i.e., one kind of insulator [6][7][8]. As like insulators, dielectrics are also very important and used not only in our day to day life but also it has high value in high technology applications such as defence [6], microwave [22,7], capacitors [8], supercapacitors [18], microwave engineering [7], phase shifter [19], filter [20] and resonator [21] etc.…”

Efficient Design of Multilayer Microwave Modules using an Element-Wise Simulation Technique

“…Low temperature co-fired ceramics (LTCC) are a well-known technology for compact and cost-effective hybrid-integration of microwave modules up to high GHz frequencies [1]. In the public R&D project KERAMIS (ceramic microwave circuits for satellite communications), several components for Kaband multimedia satellite applications (17-22 GHz) have been developed by the industrial-academic project consortium [2]. Among these components is a switch matrix module that consists of six LTCC layers and incorporates truly threedimensional microwave circuitry, which is quite challenging from a simulation and optimisation point of view [3], [4].…”