eric @zerophase_elec
hardware engineer / jhu grad student / https://t.co/Qc4UXuC4Ld Maryland Joined November 2010-
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eric retweeted
Did you know? The FCC report for the iPhone 16e revealed several system block diagrams and partial schematics That's really cool stuff. You can see how they used 10 antennas, definitely the most complex RF system I’ve ever seen. fccid.io/BCG-E8726A
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Clock/LO board went together well, time to write some code
I am NOT hand assembling three more of these
eric retweeted
400G OSFP DR4+ and 800G OSFP PSM8, both from innolight
What you see is only a tiny slice of my fpga arsenal.
What you see is only a tiny slice of my fpga arsenal. https://t.co/htrGOx56k5
eric retweeted
Literally last night we received a signal from my transmitter, which is installed on the satellite! At the moment, it is QPSK 250kS/s CCSDS (FEC1/2 + RS), but also tested on QPSK 1MS/s!
Literally last night we received a signal from my transmitter, which is installed on the satellite! At the moment, it is QPSK 250kS/s CCSDS (FEC1/2 + RS), but also tested on QPSK 1MS/s! https://t.co/0KWEvrxhZ9
Two down Really could use a polarizing filter for the microscope
Two down Really could use a polarizing filter for the microscope https://t.co/87t6NVNsqQ
No magic smoke! Carrier board went together smoothly. Now need to figure out why the bank power isn’t turning on intermittently (which is enabled by SOM board)… and give it another clean lol
eric retweeted
wear this at the next hardtech meetup
eric retweeted
Lime Microsystems has started a new campaign on CrowdSupply for their new product: a 4-channel up/down converter covering 800MHZ to 10GHZ, based on their LMS8001A RF chipset. It enables coverage from 10MHZ to 10GHZ for LimeSDR family.
Last board arrived from JLCPCB. Here’s the prototype layout
$150 marketplace find. The Metcal hand piece is a little beat, but otherwise everything is functional!
eric retweeted
Just to let you know how sensitive is the signal at 19GHz from PLL when vibration is applied to the reference crystal
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