SPRADJ6 November   2026 AWR1243 , AWR1443 , AWR1642 , AWR1843 , AWR2188 , AWR2243 , AWR2544 , AWR2944 , AWR2944P , AWR6443 , AWR6843 , AWRL1432 , AWRL6432 , AWRL6844 , AWRL6888 , IWR1443 , IWR1642 , IWR1843 , IWR2188 , IWR2243 , IWR2944 , IWR6243 , IWR6443 , IWR6843 , IWRL1432 , IWRL6432 , IWRL6432W , IWRL6843 , IWRL6844

 

  1.   1
  2.   Abstract
  3. 1Introduction
    1. 1.1 What is a mmWave Radar Antenna?
    2. 1.2 Features of mmWave Radar Antennas
      1. 1.2.1 Fundamental Antenna Parameters
      2. 1.2.2 Fundamental Antenna Array Parameters
    3. 1.3 Antenna Type Selection
    4. 1.4 Critical Sections of Antenna
      1. 1.4.1 Source
      2. 1.4.2 Feeding Network
      3. 1.4.3 Radiating Element
    5. 1.5 Antenna Array and Pattern Selection
      1. 1.5.1 Virtual Antenna Array
    6. 1.6 PCB Material Impact on Antenna Performance
  4. 2Antenna Design Flow
    1. 2.1 End Application Evaluation
    2. 2.2 Form Factor and Stack-up Decision
    3. 2.3 Link Budget and Antenna Feature Definition
    4. 2.4 Single Antenna Element Design
    5. 2.5 Antenna Array Design
    6. 2.6 Layout Creation and Simulation
    7. 2.7 Fabrication and Design Validation
  5. 3Summary
  6. 4References

1.4.1 Source

In the mmWave radar sensor, RF power amplifiers (PA) on the die excite the transmitting antenna elements. The amplified chirp signals travel from the die pads through the package layers to the RF balls, then through PCB feedlines to the antenna. In reverse, the receiving antenna elements act as the source, feeding signals back to the low-noise amplifier (LNA) at the die level. The complete block diagram is shown in Figure 1-8.

Source Block Diagram Figure 1-8 Source Block Diagram