Zobrazeno 1 - 10
of 314
pro vyhledávání: '"I. Rolfes"'
Publikováno v:
Advances in Radio Science, Vol 19, Pp 23-29 (2021)
In this contribution, the design of a multiple-input multiple-output (MIMO) radar system in 77–81 GHz range with 18 transmitting antennas and 24 receiving antennas for measuring the height profile of bulk solids in silos, is presented and discussed
Externí odkaz:
https://doaj.org/article/a921f9b1eea848b7ac5ae6dc1329b9b4
Publikováno v:
Advances in Radio Science, Vol 7, Pp 11-15 (2009)
Combining the Molded Interconnect Device technology with the Laser Direct Structuring technology exhibits the potential of designing electrical and mechanical components on three-dimensional surfaces to increase functionality, level of integration an
Externí odkaz:
https://doaj.org/article/3b7e25488d5f4339a55a5f0231c8f655
Publikováno v:
Advances in Radio Science, Vol 7, Pp 5-10 (2009)
In a multitude of applications like e.g. in automotive radar systems a localization of multiple passive targets in the observed area is necessary. This contribution presents a robust approach based on trilateration to detect point scatterers in a two
Externí odkaz:
https://doaj.org/article/6ea046550752452ca7df304c7c2f4ec8
Publikováno v:
Advances in Radio Science, Vol 6, Pp 9-17 (2008)
This contribution deals with guided radar level measurements of liquid materials in large metal tubes, so-called stilling wells, bypass or still pipes. In the RF domain these tubes function as overmoded circular waveguides and mode-matched excitation
Externí odkaz:
https://doaj.org/article/d2467dce043543bbb79ed2f3bbc6d12b
Publikováno v:
Advances in Radio Science, Vol 6, Pp 39-44 (2008)
label{sec:abstract} This paper deals with the influence of artificial magnetic conductors (AMC), so-called Sievenpiper High Impedance Surfaces (HIS), on the MIMO and Diversity performance of a planar linear-polarized 2×2 dipole array in the ISM-band
Externí odkaz:
https://doaj.org/article/8d72b4e0e812436cbc264ece385a7c0d
Publikováno v:
Advances in Radio Science, Vol 6, Pp 55-61 (2008)
The increasing interest in wireless transmission of highest data rates for multimedia applications (e.g. HDTV) demands the use of communication systems as e.g. described in the IEEE 802.11n draft specification for WLAN including spatial multiplexing
Externí odkaz:
https://doaj.org/article/9f5bd6f768e246fc85361a3017618ab3
Publikováno v:
Advances in Radio Science, Vol 6, Pp 35-38 (2008)
This Paper presents the results of spectral observations in the UHF TV Bands IV and V from 470 MHz up to 862 MHz with focus on the TV-Channels 61 to 63 and 67 to 69. Concerning the discussions on citet{WRC} this frequency range is in great demand of
Externí odkaz:
https://doaj.org/article/4a17c14d735843d992bd09cf6359be0a
Publikováno v:
Advances in Radio Science, Vol 6, Pp 27-30 (2008)
With the availability of multi-port vector network analyzers, the need for automated, calibrated measurement facilities increases. In this contribution, a calibration-measurement unit is presented which realizes a repeatable automated calibration of
Externí odkaz:
https://doaj.org/article/49118bca0e1943f197aae6a948a1aa46
Publikováno v:
Advances in Radio Science, Vol 6, Pp 19-25 (2008)
The scattering parameters of embedded devices can be measured by means of contactless vector network analysis. To achieve accurate measurement results, the contactless measurement setup has to be calibrated. However, if the substrate material or the
Externí odkaz:
https://doaj.org/article/2840d98614ec454e897700e83270d132
Publikováno v:
Advances in Radio Science, Vol 5, Pp 95-99 (2007)
Starting from planar broadband log.-per. antenna design, offering the possibility of dual-polarized reception properties, in this article a generalized mathematical approach for rapidly estimating the resulting signal correlation coefficient in a sto
Externí odkaz:
https://doaj.org/article/26ddcda19904480db958b24ae9c7966c