Summary
Receiver:
Two prototype receivers are pretty much ready for integration test.
Correlators:
1.
J. Rapadas sent Derek a new quote, total $8K for 2 each of
biased mixer and zero biase Schottky diode mixer. Derek also got a quote from
Miteq for single balanced bias able mixer, $2,410 for two, 120 days ARO. Marki
will provide us a zero biased mixer for free.
2.
The prototype was passed through the customs yesterday and
will be delivered to our office today.
60cm dish:
Dr. Ong will generate a quote and send to us next week.
Far field
range measurement:
C.J. Ma and K.Y. Lin made a second round of FFR measurement, the 3
side lobes they got are - 17dBc (1.2 degree), -21dBc (2.2degree) and -30dBc
(3.7 degree). They plan to measure the 2D beam pattern next time. More details
in this measurement , please read the attachment.
Hexapod
Mount:
A kick-off meeting with Vertex has been held last week in Germany,
Philippe will visit Vertex in every 3 weeks to monitor work progress and its
performance. The PDR meeting will be held in Aug. 26, 27 in Germany, and the
DDR will be held in December in Taipei. More details in minutes, please read
the attachment.
Cost review:
In response with the cost review request by Fred, Derek has come up
with a cost reduction proposal for correlator. For details, please read the
attachment.
Action items:
1.
Mintang/ Mike As for the prototype test starting from May
6 to May 10 in Taipei, Mintang and Mike will come up with a agenda and circulate
around to everybody to look at.
2.
Bob/ Bob will call Todd Gaier to track down the status of
JPL's quote for 28 LNA.
3.
Huei/ In order to work on the packaging and cold test for
the 28LNA this summer , Huei will send Todd Gaier a name list of visitors
to JPL.
4.
Huei/ Huei will follow up to pin down the layout of the InP
HEMT with TRW ASAP.
5.
Tzi-Da/ Tzi-Da will prepare 4 new back-end chips of old version
for prototype test in May 6 at Taipei. As for the new version of chips, he
will keep on checking its design and work out its problem.
6.
Bob/ As for the control software interface of mount, Bob
will come up with a specification and propose to Vertex in July.
7.
Bob/ Regarding the request of Mingtang for enlarging the
hole in platform to mount the receiver, Bob will follow up on this to see how big he can enlarge
the hole. (305mm is the minimum requirement for receiver).
Next meeting: Thursday, May 9, 8:30AM Taipei time.