RF Front-end receiver design for 2.4GH/5GHz WiFi application
summary
Two tape-outs use efabless open-source flow and SkyWater 130nm PDK to implement an LNA+mixer+VCO for 2.4/5GHz Wi‑Fi, targeting June chip delivery; design shows dual gain mode of 5dB/30dB, noise figure 4.7dB/5.1dB, and IIP3 -1dBm at low gain while consuming 25mA/27mA from 1.8V. PLL is omitted (LO injected), inductors are planned off‑chip for test due to limited on‑PDK models, layout integrates large passives and devices.
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chapters (16)
- 0:00RF front-end design project
- 1:04Open-source PDK and tools
- 3:11Simulation and layout workflow
- 4:36Inductor modeling challenges
- 7:24Block diagram and target application
- 8:50Mixer and harmonic fundamentals
- 10:19LNA linearity and P1dB
- 12:48Single-balanced mixer implementation
- 14:14Local oscillator design
- 15:00Layout and integration
- 16:03Conclusion and future testing
- 16:26Q&A
- 17:32Cadence compatibility and noise
- 18:17Legal considerations for open-source PDKs
- 19:19Team experience and timeline
- 20:00Long-term goals and library
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