The Alphasat Aldo Paraboni scientific experiment: An overview of the activities of the European Space Agency

Robust Tolerance Design of Bandpass Filter With Improved Frequency Response for Q-Band Satellite Applications

“…Specifically, the largest impedance will be implemented by the section with the largest height bmax and the smallest width amin. Therefore, a value smaller than the waveguide standard port must be fixed for amin, and then bmax can be obtained using (2). It is important to note that these values should fulfill (3) to avoid possible glitches in the passband due to the higher-order TE110-mode resonance [8]:…”

“…1), where 2 is the highest frequency of the spurious low-pass response associated with the filter with constant width equal to amax designed following [6] and 1 is the lowest frequency of the spurious low-pass response associated with the filter with constant width equal to amin designed following [6]. The height of the smallest section, bmin, can be calculated afterwards using (2). Finally, considering amin and amax for the larger and smaller sections, respectively, the remaining heights of the sections bi can be also obtained using (2).…”

“…The height of the smallest section, bmin, can be calculated afterwards using (2). Finally, considering amin and amax for the larger and smaller sections, respectively, the remaining heights of the sections bi can be also obtained using (2).…”

“…EW trends in the space industry demand high data rates, better fabrication tolerances, and spurious free responses to have flawless communication between gateways and satellites. Space industry is exploring high frequency bands to increase communication capacity and, therefore, is interested in Q/V bands for commercial use [1], [2]. The typical solutions to design Q-band bandpass filters (BPFs) are based on the use of coupled resonant cavities.…”

Alphasat Aldo Paraboni, an advanced Q/V band mission space segment

“…In this framework, a ground segment in Austria has been implemented, thanks to the support of the Austrian delegation to ESA, under ESA's ARTES Programme. The preparation of the Aldo Paraboni Mission has also enabled a number of R&D projects in the framework of ESA ARTES 5.1, TRP, and PECS programs, for development of instruments and execution of long-term campaigns (see 4,20 ). A number of national space organizations, including CNES and NASA, are also actively involved in the SCIEX propagation campaign.…”