1. Huei will send some second iteration chips of GaAs to Mal; Mal will help testing on them.
2. Fred has sent an email to J. Weber to explore the collaboration possibility with NRAO on the packing and testing of MMIC, and now is waiting for response.
3. Jeff had a couple of calls with Sandy talking about the MMIC issue, Sandy is quite willing to allow his design to be used. Sandy has done some parts recently for UMass,and Jeff requested the sample of parts from their run. Neil Erickson agrees to supply 10 pieces of W-band MMICs for us to play with. Of course, chips have to be packaged and tested. Jeff will find out what's the performance of the UMass device in order to know if it is good enough. In the meantime, Jeff will contact J & E. and to figure out what the cost are for packaging all these stuffs together.
4. We are aiming to have a wafer run at TRW by this December, and get wafer back by June next year, and test wafer by July at TRW or JPL or Taipei, dicing and packaging by August and September. We need at least 80 MMIC amplifiers for our production, and one year from now to get it done. And currently, TRW is preparing the contract document, and they should send it to us in a week or so. Huei and Paul will take care of it

H.Wang

K.Y.Lo

J.Peterson

H.Wang
P.Shaw

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1. As for how many phase switches we need to use in the prototype, Warwick will discuss it with Mike.
2. Huei has forwarded the Silicon Germanium information to CIC to see if they are able to do it. We hope CIC could approve the access onto the wafer run in May. Huei will find it out with CIC in the next couple of days.
3. Paul Robert has finish the test on the chips of Gilbert Cell Multiplier for Huei, the noise is quite better than what they expect, is about half of what they got from the InP multiplier, and the frequency is quite bit lower. However, it is still the case if we are going to use it for AMiBA, we still have to switch something 100KHz or so, and as a consequence the noise will become very high. That's the main problem we have with the InP multiplier and the Gilbert Cell multiplier.;Warwick will send the test report to Huei to look at.
4. Bob, Warwick, Jeff, Ray and Paul will have a phone meeting at 8a.m. tomorrow Taiwan time, to work out exactly what we can use for prototype, which including the backend amplifier, daily collection stuff, the integration with Ray's IC chips and Jeff's 17 lag correlator.
5. Jeff is still waiting for the delivery of the components for the prototype by 10 of May, and then he will proceed to make the 17 lag correlator and see how they work.
6. Warwick have been having a closer look at Ray's test report from the first tests of the CMOS output processing chip, and he is concerning about the frequency range of the V/f is little bit less than the original plan, and he believes it because now working on 3 volts supply rather than 5 volts supply. Warwick will do some calculation to work out what implementations are.

W.Wilson

H.Wang

W.Wilson

B.Martin

J.Peterson

J.Peterson
R.Wei

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1. Mal will follow up to see if he can get a beam pattern analysis on the feed horn and antenna to see how accurate we can simulate the lens.
2. Regarding the modeling on the circular polarization, Mal will send a report around to everyone to look.
3. Regarding the NRAO OMT production,NRAO people is looking for another two possible shops to manufacture OMT in order to speed up the process. M.T. will keep on watching it. The Chungshang Institute is still working on the pricing
4. Bob and Warwick had a look at the Prof. Chu's lab since MoE site visit. Bob thinks it is worthwhile the near field range testing when the small dishes come, but additionally look at the far field range testing. Mal will get some specification on the far field range testing. Bob says that we want thoroughly test the small dishes, and thoroughly understand the beam pattern, side lops and the alignment of the mirrors, and focusing on all that. And the best way to do these is the geography experiment; Mauna Kea probably is a good place to do it
5. Mingtang has set up an offline meeting with Mal in this afternoon.

M.T.Chen

H.C.Lu

M.Sinclair

M.T.Chen

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1. Eugene says that they have got all instrument installed and tested, during the past week. The dual channel power meter and a noise source are work well with the high frequency spectrum analyzer now, except some reading miss-measurement between the output power laser and the power meter.
2. Eugene is trying to figure out the feed back loop in three fiber cables, two cables send signal to each antenna, and use one cable to carry back the signal to the central unit for phase control in order to shorten the cable length from the central unit to each antenna. He will calculate the accuracy of this configuration, and compare with the original optical fiber configuration.
3. Regarding the optical amplifier, Eugene is keeping on looking for the quotation of the components of commercial market.

Y.J.Hwang

Y.J.Hwang

Y.J.Hwang

Ongoing

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Ongoing

1. Bob says that the small dishes is no longer on schedule, CMA has problem with the delivery from its subcontract of the tool making the mould. So it looks like the delivery will be delay 4 to 5 weeks,may be in July 1. As to the large dishes, Bob got the quotation from CMA, he will talk to Paul later after this meeting.
2. Bob, Philippe and Paul had a phone discussion with Vertex last Monday, some initial price information, and we will get a written quotation today. This is the first time we heard the final pricing of the traditional mount is significant less than the hexapod one about 40% difference. So the issue is becoming complex, because if to go with the classic mount, another consideration is the size, above the ground, and size of the ground shield, and the protection needed. We have not yet look at that all, and cost together.
3. We have got an answer back from The Chungshang Institute; they basically can't do the mount of this size.
4. Warwick and Mal will talk to Mike to see whether he got the quote from The Sydney Engineering Co. or not.

B.Martin

B.Martin

W.wilson

Ongoing

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M.Kesteven

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