Welcome Katerina Galitskaya!

• Chris started following Katerina’s antenna posts on LinkedIn
• Monopole vs dipole
• Lower frequences are harder bc longer wavelength
• PCB size half of frequency
• Place antenta on the shorter side
• How to ruin your PCB
• When to go to a antenna engineer?
• Where will the device be?
• Antenna environment
• Start from vacuum, start adding elements
• Dummies in the lab. The one in the episode photo is a dummy head filled with liquid (?!)
• SAR – Specific Absorption rate
• Simulation vs lab work (dimensions)
• Anechoic chamber
• When to go with custom antenna?
• Buying off the shelf antenna?
• New Airpods with fancy 3D antenna
• Ben’s video about laser sintered antennas
• MIMO / Beamforming
• the failed promises of 5G
• When to simulate
• Some open source programs out there (“EMSee”?)
• Simulating vs visualizing
• Most of the time it’s not about vizualizing fields
• What is the iteration elements of the antenna?
• Satellite antenna design
• Good to go external
• Thinking about the dielectric const of case
• Follow Katerina on LinkedIn!

• Spam calls
• Keysight released the HD3, a 14 bit ADC oscilloscope (teardown video)
• Chris will be at Embedded World North America, please let him know if you’ll be there!
• Chris will be at the Joulescope stand along with former guest Matt Liberty
• This is one of the only tradeshows for general electronics in the US, Embedded Systems Conference went away many years ago. Chris, Dave, and Jeff (yesssah!) recorded at ESC in episode 41!
• Bootstrapping new conferences
• Cellular power modes
• Dave old GSM video
• PSM / eDRX
• ALT1350
• Dave got a smart meter on his home setup
• EDMI 
• EEVblog forum post about leaky power bill
• Maybe a trickle
• Chris has been trying out Meshtastic, which is based on LoRa. Check out Jeff Geerling’s video for a good overview.
• meshtastic subreddit
• People posting about airplanes flying overhead (example post) like ham radio contacts
• Meshmap

• Chris has been moving house, which partially explains the terrible audio problems the past few episodes…
• For a lab, Chris believes in
  • Lots of wire shelving (with epoxy coating)
  • Everything on wheels (including shelving and workbenches)
  • As much storage as you can get
• Chris has been doing livestreams of hardware design for Golioth.
• The module he is designing is called the Drachm (“dram”)
• The hardware Chris has been working on for the past 2 years is now open source
• Flox video with machine learning on a camera also featured Chris
• Altium finalized their acquisition by Renesas. The price already went up (discussed previously)
• Raspberry Pi released the RP2350 while we were away
• Inductor polarity on the RPi Pico 2
• RP2350 Datasheet
• You can choose the processors you want (Dual m33, dual RISC V)
• Microchip was offline due to …. HACKERS
• Dave has been trying out a new home battery storage system
• NMC vs LFP
• Reverse cycle
• There have been lots of layoffs in tech, including 15K (!) at Intel
• Layoffs.fyi
• Being sued for a battery review? Say it aint so