Tool/software:
Hi TI team,
We are redesigning the antenna on the AWR2944PEVM to use the device’s RF front end in a hybrid configuration:
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Four RX channels form a fixed elevation multibeam curtain (passive receive, no switching).
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One TX chain performs analog azimuth beam steering across ±15°, updated once per frame (CPI = 60 ms or 120 ms).
Before finalizing the antenna hardware and calibration plan, we need confirmation on the following five control-interface points:
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Atomic phase and amplitude commit at frame boundary
Can all TX elements update phase and amplitude together using shadow registers with a single frame-sync latch?
What are the effective phase resolution, INL/DNL, and temperature drift limits?
Acceptance: atomic commit; combined pointing error (quantization + drift) ≤ 0.3–0.5° rms over ±15°. -
Beam squint across FMCW sweep
What is the maximum azimuth squint at ±15° across the typical chirp bandwidth?
Are sub-band steering tables or compensation methods supported?
Acceptance: squint < ⅓ beamwidth or mitigation available. -
Per-steer calibration LUTs (phase and amplitude)
How can per-steer phase and amplitude LUTs (including tapers) be preloaded?
What is the bank size, number of banks, and swap time per frame?
Acceptance: ≥ 256 entries per bank or fast bank swap; ≤ 10 µs index-swap; background reload supported. -
Amplitude taper capability
What bit-depth and dynamic range are available?
Can amplitude values latch atomically with phase at frame-sync?
Acceptance: ≥ 7–8 bits, ≥ 10–12 dB range, same commit timing as phase, glitch-free. -
Multi-device synchronization (if cascaded)
Is there PPS/10 MHz support, guaranteed frame-start skew, and a method to phase-align multiple devices so all commit the same beam index simultaneously?
Acceptance: < 50 ns frame-start skew; documented phase-align; same-frame commit supported.
References to datasheet sections or example threads would be greatly appreciated. Thank you!
