Ipx-551 Page

A field trial in an urban micro‑cell environment (Tx at 28 GHz, 20 dBm EIRP) employed a commercial 5G NR base station. The IPX‑551 front‑end was integrated into a UE test module. Over a 500‑m link, the system achieved throughput of 2.1 Gbps with BLER < 0.5 % using 64‑QAM, confirming real‑world applicability.

Two‑tone IMD₃ measurements (tones at 28 GHz ± 500 kHz) reveal a third‑order intercept point (IP₃) of +32 dBm at the chip input. The resulting SFDR is 115 dB·Hz²⁄³, satisfying the > 110 dB·Hz²⁄³ requirement for 256‑QAM 5G‑NR deployments [7].

A vector network analyzer (VNA) with mmWave extension modules generated continuous‑wave (CW) tones at 24–30 GHz. An optical spectrum analyzer monitored the laser output. The receiver chip was mounted on a custom thermo‑electric cooler (TEC) board to maintain 25 °C ± 0.1 °C. Measurements were performed in a shielded RF chamber. IPX-551

Figure 2 shows the NF versus frequency. The measured NF remains < 2.4 dB across the entire 24–30 GHz band, with a minimum of 2.0 dB at 28 GHz. The results closely follow the simulated curve (dashed line), confirming the efficacy of the balanced detection and LNA design.

The overall noise figure (NF) of the receiver is expressed as: A field trial in an urban micro‑cell environment

[ \mathrmNF= \mathrmNF_LNA + \frac\mathrmNF_MZMG_\mathrmLNA + \frac\mathrmNF_PDG_\mathrmLNAG_\mathrmMZM ]

where (G) denotes the linear gain of each stage. To minimize NF: Two‑tone IMD₃ measurements (tones at 28 GHz ±

Simulation predicts a total NF of 2.1 dB, which is validated by measurement (see Section 4).

| Day | Milestone | |-----|-----------| | 1 | Finalize scope (answers to the “Clarify the Scope” table). | | 2 | Draft Title, Abstract, and Outline (sections & subsections). | | 3‑4 | Write Introduction & Related Work (collect 10‑12 key citations). | | 5‑7 | Build / run the experiment or simulation; collect raw data. | | 8 | Create figures & tables; write Methodology (include diagrams). | | 9‑10 | Write Results (populate figures, add captions). | | 11 | Write Discussion & Conclusion. | | 12 | First full‑paper read‑through; fix flow, add transitions. | | 13 | Insert citations, format references, polish language. | | 14 | Peer‑review (ask a colleague), incorporate feedback, final proofread. | | 15 | Export to required template (PDF/LaTeX/Word) and submit. |