Integrated Dual-Channel X-Band Offset-Transmitter for Phase Steering and DDMA Arrays
van Vliet, F.E.
Multiple-Input and Multiple-Output (MIMO) arrays provide more degrees of freedom than conventional phased arrays. They require that every transmitting element of the array can be identified when received. One way to achieve this is to give every element its own unique frequency. Offset-transmitters may be used to introduce MIMO or Doppler Division Multiple Access (DDMA) into phased-arrays without an excessive increase in waveform-generating hardware. Our dual-channel demonstrator IC can obtain a phase accuracy better than 1 degree and an spurious level of better than -65dBc for a single on-chip channel. This work investigates at X-band the effects of the limited on-chip isolation of 35dB, when multiple offset outputs are generated on a single chip for both beam steering and DDMA. In case of beam steering, the requirements on channel-to-channel isolation are less strict, making it well within reach. In the case of DDMA, we recommend increasing the channel-to-channel isolation by implementing multiple chips, in which case independent signals can be generated. © 2016 IEEE. The IEEE Electron Devices Society
2015 Observation, Weapon & Protection Systems
To reference this document use:
RT - Radar Technology
TS - Technical Sciences
Degrees of freedom (mechanics)
Multiple input and multiple outputs
Institute of Electrical and Electronics Engineers Inc.
2016 IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2016. 23 October 2016 through 26 October 2016
Technical Digest - IEEE Compound Semiconductor Integrated Circuit Symposium, CSIC