Search Results - "Chaloupka, H"

Sequential tuning of microwave filters using adaptive models and parameter extraction by Pepe, G., Gortz, F.-J., Chaloupka, H.

“…This paper describes a sequential procedure for computer-aided tuning and diagnosis of multiple-coupled resonator filters. The method is based on a sequential…”
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Superconductors and cryogenics for future communication systems by Klauda, M., Kasser, T., Mayer, B., Neumann, C., Schnell, F., Aminov, B., Baumfalk, A., Chaloupka, H., Kolesov, S., Piel, H., Klein, N., Schornstein, S., Bareiss, M.

“…In the framework of a German research program on "superconductors and ceramics for future communication technology", efforts are undertaken to demonstrate the…”
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Novel approach for narrowband superconducting filters by Reppel, M., Chaloupka, H.

“…The concept and latest experimental results for planar bandpass filters made from high temperature superconductors (HTS) are reported. In the proposed…”
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Millimetre-wave imaging with reduced number of degrees of freedom in array signal processing: concepts for enhanced angular resolution by Kotyrba, G, Chaloupka, H

“…This paper deals with millimetre-wave imaging systems based on linear receiving arrays and is focused on the issue of angular resolution and coverage for…”
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A superdirective 3-element array for adaptive beamforming by Chaloupka, H. J., Wang, X., Coetzee, J. C.

“…A small array composed of three monopole elements with very small element spacing on the order of λ/6 to λ/20 is considered for application in adaptive…”
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Computer-aided tuning and diagnosis of microwave filters using sequential parameter extraction by Pepe, G., Gortz, F.-J., Chaloupka, H.

“…This paper describes an approach to the computer-aided tuning of multiple-coupled resonator filters. The method is based on a sequential parameter extraction…”
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An HTS transceiver for third generation mobile communications by Greed, R.B., Voyce, D.C., Jedamzik, D., Hong, J.S., Lancaster, M.J., Reppel, M., Chaloupka, H.J., Mage, J.C., Marcilhac, B., Mistry, R., Hafner, H.U., Auger, G., Rebernak, W.

“…Future third-generation mobile communication systems will require improved sensitivity and selectivity to support the growth in multi-media services, increased…”
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YBaCuO disk resonator filters operating at high power by Aminov, B.A., Piei, H., Hein, M.A., Kaiser, T., Muller, G., Baumfalk, A., Chaloupka, H.J., Kolesov, S., Medelius, H., Wikborg, E.

“…We have developed and successfully operated a compact tunable one-pole filter at 2 GHz for transmitter combiners in mobile radio base stations. The concept is…”
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Planar HTS structures for high-power applications in communication systems by Kolesov, S., Chaloupka, H., Baumfalk, A., Kaiser, T.

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HTS power filters for output multiplexers in satellite communications by Baumfalk, A., Chaloupka, H., Kolesov, S., Klauda, M., Newmann, C.

“…The paper reports on advances in the development of high temperature superconducting 40 MHz bandwidth four-pole bandpass filters with elliptic frequency…”
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Miniaturized high-temperature superconductor microstrip patch antenna by Chaloupka, H., Klein, N., Peiniger, M., Piel, H., Pischke, A., Splitt, G.

“…Experimental as well as computational results are presented for 2.4 GHz microstrip antennas which are miniaturized (total length, 6 mm) by both a new, stepped…”
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Thin film HTS passive microwave components for advanced communication systems by Jia-Sheng Hong, Lancaster, M.J., Greed, R.B., Voyce, D., Jedamzik, D., Holland, J.A., Chaloupka, H.J., Mage, J.-C.

“…This paper presents results of thin film high temperature superconducting (HTS) passive microwave components recently developed for advanced communication…”
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A high-temperature superconducting duplexer for cellular base-station applications by Jia-Sheng Hong, Lancaster, M.J., Greed, R.B., Jedamzik, D., Mage, J.-C., Chaloupka, H.J.

“…This paper presents a recent investigation of a high-temperature superconducting (HTS) duplexer for cellular base-station applications. The duplexer consists…”
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Performance enhancement of smart antennas with reduced element spacing by Chaloupka, H.J., Wang, X., Coetzee, J.C.

“…This paper addresses the problem of degradations in adaptive digital beam-forming (DBF) systems caused by mutual coupling between array elements. The focus is…”
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Superconductors and cryotechnology for future space communication technology-the BOSCH demonstrator experiment by Klauda, M., Kasser, T., Neumann, C., Mayer, B., Schrempp, C., Hormann, A., Baumfalk, A., Chaloupka, H., Schornstein, S., Klein, N.

“…A demonstrator system for high temperature superconductor (HTSC) and cryogenic technology for application in satellite communication is described. The C-band…”
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On the properties of small arrays with closely spaced antenna elements by Chaloupka, H.J., Wang, X.

“…In a multipath-rich environment, increased capacity can be gained by replacing SISO with MIMO communication systems. However, at mobile terminals, the…”
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High-Q LaAlO/sub 3/ dielectric resonator shielded by YBCO-films by Tellmann, N., Glein, N., Dahne, U., Scholen, A., Schulz, H., Chaloupka, H.

“…We have investigated a dielectric resonator consisting of a single crystalline LaAlO/sub 3/-cylinder shielded by a cylindrically shaped copper cavity with…”
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A satellite repeater comprising superconducting filters by Kasser, T., Klauda, M., Neumann, C., Guha, E., Kolesov, S., Baumfalk, A., Chaloupka, H.

“…This paper deals with the development of a satellite repeater comprising superconducting filters. We show measurements of single devices such as narrow-band…”
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Novel approach for diversity and MIMO antennas at small mobile platforms by Chaloupka, H.J., Wang, X.

“…Small arrays with closely spaced elements are analyzed with respect to the impact of mutual coupling on gain degradation and correlation between different port…”
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A high temperature superconducting anti-jam GPS antenna array by Kuester, C., Chaloupka, H., Knauth, J.

“…The Defense Advanced Research Projects Agency (DARPA) is funding a GPS adaptive antenna array using high temperature superconductor (HTS) technology. This…”
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