Contributing authors: John Sullivan and Radu Trandafir
While 5G is becoming more mainstream, mmWave 5G is still in its infancy. Space and power efficiency are important design considerations for cellular handsets. Identifying the architecture of a transceiver helps us understand how space and power design challenges are addressed.
What makes this architecture different? How do we understand mmWave transceiver architecture from the antenna to the modem? If you’re TechInsights, you reverse engineer it.
We closely examined Qualcomm’s QTM052 module that is found in the Samsung Galaxy S10 5G headset.
Download our ebook to learn about the steps we took to reverse engineer this mobile RF module.
Table of contents
Identify antenna modules and placement through teardown analysis
Antenna connections to the RF die through reverse engineering of the module PCB
Connectivity of the QTM052 mmWave Antenna Module
Start building a picture of the transceiver architecture
4.1. Floorplan Analysis of the Transceiver Die within the QTM052
4.2. High-level extraction of general transceiver architecture
4.3. Top-Level Schematic Diagram of Transceiver
4.4. Lower-level transistor schematics of the unit transceiver
Overall Architecture after Analysis of RF Transceiver
5.1. Identifying the RF IC in the SDX50M modem
5.2. Transceivers for the Dual Phase Antenna Array
5.3. Architecture Schematic of the Left Side Transceiver
Getting closer to deducing the transceiver architecture
Final piece of the architecture puzzle – the modem die
Intel recently presented their Intel 4 process innovation at the 2022 VLSI Symposium. They shared quite a bit of information about the new process, as they have done with nodes previously before products were released.
As part of the TechInsights Li-Ion Battery Essentials subscription, we had the opportunity to reverse engineer the Amperex BM55 battery pack found in the Xiaomi Mi 11 Ultra. Xiaomi claims this is the first smartphone to use a Silicon Oxygen Anode based battery.
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