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- W3145882681 abstract "This chapter discusses the fundamental physics that determine the bandwidth of reflectarray antennas. A reflector antenna is essentially frequency-independent, that is, it has an infinite bandwidth, and in practice the primary feed antenna is responsible for limiting the bandwidth of the reflector. The chapter outlines the basic physics of bandwidth limitations for all three phase tuning approaches. The bandwidth limitation imposed by the radiating element is most significant for small or moderate size reflectarrays, and bandwidth of large reflectarrays is primarily governed by a second factor, namely the differential spatial delay. Depending on the phase tuning approaches, however, the physics behind the bandwidth limitation is different. In the delay-line approach, impedance matching between the transmission-line and the patch is the key factor, since it ensures that the power is received or transmitted from the patch to the delay-line and vice versa, thus controlling the element bandwidth." @default.
- W3145882681 created "2021-04-13" @default.
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- W3145882681 date "2018-02-06" @default.
- W3145882681 modified "2023-10-17" @default.
- W3145882681 title "Bandwidth of Reflectarray Antennas" @default.
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- W3145882681 doi "https://doi.org/10.1002/9781118846728.ch5" @default.
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