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Controllable phase control element for electromagnetic waves

專利號
US10868349B2
公開日期
2020-12-15
申請人
Lisa Draexlmaier GmbH(DE Vilsbiburg)
發(fā)明人
Joerg Oppenlaender; Alexander Moessinger
IPC分類
H01P1/17; H01P1/18
技術領域
phase,polarizers,antenna,waveguide,polarizer,polarized,element,wave,control,in
地域: Vilsbiburg

摘要

A controllable phase control element comprises a drive unit and a holder, to which at least two polarizers are attached, which are arranged one behind the other in the direction of incidence of a wave. Each polarizer is designed in such a way that the polarizer can convert a circularly polarized signal into a linearly polarized signal. The drive unit is designed in such a way that the holder and thus the polarizers can be mounted over a freely selectable angular range.

說明書

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

The embodiments shown in FIGS. 4, 5 and 6 can typically be integrated into the feed networks of antenna arrays without problems, because they require little space. At a frequency of 20 GHz, for example, the dimensions are typically in the range of less than one wavelength, that is, about 1 cm×1 cm. If the holder (3) is designed as a dielectric packing material and the dielectric constant is selected as suitably large, then much smaller structural volumes can be achieved. The ohmic losses do rise slightly then, but are still merely in the percentage range.

The weight of the controllable phase control element is also typically very low. If the polarizers are embodied by thin-film technology on thin RF substrates, and if the holder is made from closed-cell foam, then the weight of the phase control element amounts to typically only a few grams. For the drive unit as well, only very small, lightweight actuators, such as micro electric motors, are therefore necessary. The weight of such micro electric motors is again in the gram range. The weight of an individual phase controller, particularly in the frequency range above 10 GHz, is then typically only a few grams.

Another advantage is that dissipation of the phase controllers of the invention is very slight. The heat input of the phase control elements is negligible because of the very low ohmic losses. If electric motors are used as drive units, then their efficiency is typically >95%, so that the drive units, too, engender practically no heat input. Furthermore, the power consumption, of micromotors, for instance, is merely in the mW range.

權利要求

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