| タイトル | Beam-Switch Transient Effects in the RF Path of the ICAPA Receive Phased Array Antenna |
| 本文（外部サイト） | http://hdl.handle.net/2060/20030093732 |
| 著者（英） | Sands, O. Scott |
| 著者所属（英） | NASA Glenn Research Center |
| 発行日 | 2003-09-01 |
| 言語 | eng |
| 内容記述 | When the beam of a Phased Array Antenna (PAA) is switched from one pointing direction to another, transient effects in the RF path of the antenna are observed. Testing described in the report has revealed implementation-specific transient effects in the RF channel that are associated with digital clocking pulses that occur with transfer of data from the Beam Steering Controller (BSC) to the digital electronics of the PAA under test. The testing described here provides an initial assessment of the beam-switch phenomena by digitally acquiring time series of the RF communications channel, under CW excitation, during the period of time that the beam switch transient occurs. Effects are analyzed using time-frequency distributions and instantaneous frequency estimation techniques. The results of tests conducted with CW excitation supports further Bit-Error-Rate (BER) testing of the PAA communication channel. |
| NASA分類 | Space Communications, Spacecraft Communications, Command and Tracking |
| レポートNO | NAS 1.15:212588
E-14145
NASA/TM-2003-212588 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/63919 |
