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XMOD (X-band Multi-mode High Speed Modulator)

XMOD (X-band Multi-mode High Speed Modulator)
Registration date 5/15/2014
JAXA development group Research Unit I, Research and Development Directorate
View diagram See Attachment 1
Environmental resistance See Attachment 2
Patent number
(publication number)
N/A
Reference See Attachment 3
Satellite and launch date To be supplied after launch
Note N/A
Manufacturer

Mitsubishi Electric Corpration
Kamakura-shi, Kanagawa, Japan
http://www.mitsubishielectric.com/worldwide/index.html

Features

  • This component provides the three communication modes, which are selectable by commands.
    800 Mbps (16QAM), 400 Mbps (QPSK) and 200 Mbps (QPSK)
  • Internal redundant configuration.
  • Demodulation is possible by CORTEX HDR XXL.

Applications

X-band modulator on earth exploration satellites.

Specifications

Property Specification Development result
Output frequency X-band, Select one frequency in the range of 8025 to 8400 MHz same as on the left
Modulation 16QAM, QPSK same as on the left
Data rate 800 Mbps (16QAM)
400 Mbps (QPSK)
200 Mbps (QPSK)
(Selectable by command)
same as on the left
Occupied frequency bandwidth 16QAM 800 Mbps : 275 MHz or less
QPSK 400 Mbps : 275 MHz or less
QPSK 200 Mbps : 150 MHz or less
16QAM 800 Mbps : 239 MHz or less
QPSK 400 Mbps : 239 MHz or less
QPSK 200 Mbps : 122 MHz or less
RF output power +5 dBm ±1 dB +5.0 dBm ±0.6 dB or less
Carrier suppression 16QAM 800 Mbps : -45 dBc or less
QPSK 400 Mbps : -45 dBc or less
QPSK 200 Mbps : -42 dBc or less
16QAM 800 Mbps : -45 dBc or less
QPSK 400 Mbps : -45 dBc or less
QPSK 200 Mbps : -43 dBc or less
Operating voltage +30 to ±53 VDC same as on the left
Power consumption 25.5 W or less
(internal redundancy)
19.86 W max
(internal redundancy)
Dimensions (max)(W×D×H) 277 mm × 106 mm × 186 mm
(internal redundancy)
259.1 mm × 97.4 mm × 176.0 mm
(internal redundancy)
Mass 3.36 kg or less
(internal redundancy)
2.83 kg
(internal redundancy)
Operating
temperature range
-20 to +55 °C same as on the left
Interface Data : Wizard Link (TLK2711)
Telemetry/Telecommand : ELA-422
RF : Coaxial
same as on the left