SKA-Japan Industry Forum [SKA-Japan Workshop 2010] EMC & Microwave Systems November 05, 2010

§Exchange latest technologies §Dispute the sub-system specifications with Japan SKA Consortium (Science Astronomers) §Experimental trial and evaluation of the system performance SKA Industry of Japan Square Kilometer Array Industry of Japan 1 Status of SKA Japanese Industry Forum  Sep. 2009Kicked off the industry meeting call for NAOJ and Japan SKA consortium SKAIJ  Dec. 2009Started the SKAIJ by the up and coming companies  Jul. 2010Came together 9 companies Began to discussion the Japanese contribution

Square Kilometer Array Industry of Japan 2 Relationship of SKAIJ SKAIJ NAOJ Japan SKA consortium (Science astronomy) SKA IEAC SSEC SPDO International engineering community SKA Contribution Requirements Requirements Information Exchange technical issues Collaboration / Partner Approach ［ New Technologies ］

Square Kilometer Array Industry of Japan 3 Desired engineering goal ！  Key futures Frequency coverage  SKA mid-band to SKA semi-high-band feed  3-20GHz decade band Integrated receiver  Low power and cooling wide-band LNA  High frequency and wide band ADC Ultra high speed gigabit data transmission Digital beam forming  100 instantaneous beams and 2 polarizations Wideband direct sampling digital receiver and feed Wideband Homodyne Frontend Homodyne Frontend KEYWORD !

Square Kilometer Array Industry of Japan 4 Development concept Low power consumption Cost effective Maintainability Light weight Compact space Wideband Instantaneous beam Multi-beams Homodyne Wideband Homodyne Frontend

Ultra high speed InP HBT 3bit sampler NTT Photonics Laboratory (3 mm × 3mm ） WS GHz (BW = 4.096GHz) Direct sampler (8.192Gbps) Square Kilometer Array Industry of Japan 5 Experimental Test 3bit A/D Converter Proof of concept Homodyne receivers W49N spectrum using traditional heterodyne receiver W49N spectrum using high speed direct-sampling

Trial model of wideband feed Return Loss [dB] Tapered Slot Antenna Evaluation Square Kilometer Array Industry of Japan 6

Trial model of A/D converter package from SMIED Compare new package with wire bonding Trial model Square Kilometer Array Industry of Japan 7 Insertion Loss [dB]Time domain reflection Test probe RF characteristics

Square Kilometer Array Industry of Japan 8 Potential Sub-system Wideband Homodyne Frontend WBSPF 2 polarizations WBSPF

Square Kilometer Array Industry of Japan 9 Challenging Sub-system WBPAF 2 polarizations WBPAF Wideband Homodyne Frontend

Square Kilometer Array Industry of Japan 10 Focus on Challenging  Wideband radiator (Feed) Carry out decade band Compact space  Integrated Receiver Analog part  Indium-Phosphorous LNA with cryogenic cooling  Low power consumption, light weight, compact space  Applicative existing cryogenic cooling technologies Digital part (Direct digital sampling)  High speed wideband A/D converter  Improvement analog input transmission in the A/D converter  Ultra high speed data output  Extreme volume digital beam forming Large volume of digital data from feeds Sales products

Wideband Homodyne Frontend Square Kilometer Array Industry of Japan 11 New developments and future directions  SKA semi-high-band feeds  Phased array 3-20 GHz 100 instantaneous beams x 2 polarizations  LNA with Cryogenic cooling Low power consumption Cryogenic cooling  Whole analog section or individual LNA Wideband  A/D converter Analog frequency : ~20 GHz Sampling rate : ~16 Gbps / 3 bits

Square Kilometer Array Industry of Japan 12 Timeline  Telescope system design and cost  2012Site selection  Detail design and pre-construction phase Advanced instrumentation program decision  2016Advanced instrumentation program decision  Phase 1 construction Our target time frame of new developments

Square Kilometer Array Industry of Japan 13 SKAIJ (Engineering)

Square Kilometer Array Industry of Japan 14 SKAIJ future activity  Create our homepage Keep up-to-date with the development status Deliver latest information  Undertake information gathering Come into international events to get development status and new technologies Come out with the development status and test results

Square Kilometer Array Industry of Japan 15 Conclusion  Specification Frequency coverage  RF band :3 – 20 GHz  Bandwidth :8 GHz (16 Gbps nyquist) Phased array feed per antenna  Number of beams :100 instantaneous beams  Polarization :Horizontal and Vertical Low noise amplifiers  Amplifier noise temperature :Tsys = 30K  Cooling temperature :20K cooling  Number of LNAs :200 ea. per antenna

Thank you. EMC & Microwave Systems 1-6, Yaesu 1-chome, Chuo-ku, Tokyo, Japan TEL: / FAX: Contact SKA Industry Japan Toshiki Kumazawa Toshiki Kumazawa Toyo Corporation TEL : FAX :