SWRU553A September   2019  – February 2020 AWR1243 , AWR2243

 

  1.   AWRx Cascaded Radar RF Evaluation Module (MMWCAS-RF-EVM)
    1.     Trademarks
    2. 1 Getting Started
      1. 1.1 Introduction
      2. 1.2 EVM Revisions
      3. 1.3 Key Features
      4. 1.4 What is Included
        1. 1.4.1 Kit Hardware Contents
        2. 1.4.2 mmWave Studio and Matlab Post Processing
    3. 2 Hardware Description
      1. 2.1 Block Diagram
      2. 2.2 Attaching the MMWAVCAS-RF-EVM to the MMWAVCAS-DSP-EVM
      3. 2.3 Power Status LED Indicators
      4. 2.4 Reset LED Indicators
      5. 2.5 Connectors
        1. 2.5.1 Host Board Connectors(J4, J5)
        2. 2.5.2 Bench Power Connector(J6)
        3. 2.5.3 20 GHz LO Debug Connector (J3)
        4. 2.5.4 AWR OSC_CLKOUT Debug Header (J2)
        5. 2.5.5 AWR Debug Headers (J1_1, J1_2, J1_3, J1_4)
      6. 2.6 Antennas
        1. 2.6.1 TX and RX Antenna Arrays
        2. 2.6.2 PCB Antenna Element
          1. 2.6.2.1 RX Antenna Element Performance
          2. 2.6.2.2 TX Antenna Element Performance
        3. 2.6.3 Virtual Antenna Array
    4. 3 Design Files and Software Tools
      1. 3.1 Hardware Collateral
      2. 3.2 Software, Development Tools, and Example Codes for MMWCAS-RF-EVM
      3. 3.3 Critical AWRx Setup Notes
        1. 3.3.1 LDO Bypass Requirement
    5. 4 PCB Dimensions and Mounting Information
    6. 5 PCB Storage and Handling Recommendations
    7. 6 References
    8. 7 Regulatory Information
  2.   Revision History

2.6.2.1 RX Antenna Element Performance

Simulated RX antenna performance from RX Array A is shown below. Three different RX antenna were excerpted to show the overall performance across the array. These excerpted antenna are labeled RX1, RX4 and RX8 shown. This selection is meant to highlight behavior of the RX antenna near the edge of the RX antenna rrays and near the center of the arrays. Due to coupling between antenna, the performance near the edge of the array changes from the performance near the center of the array.

swru553-cascade-rf-design-spec-diagrams-rx-array-a-sim.pngFigure 17. RX Array A Execerpt for Simulation (RX1 at the "top" of the image, RX8 at the "bottom" of the image. RX1 highlighted in purple.)
swru553-cascade-rf-design-spec-diagrams-rx-array-a-rx1-76G-sim-pattern.pngFigure 18. RX Array A, RX1, 76 GHz Operation (Maximum E-plane (Phi = 90) and H-plane (Phi = 0) slices shown. 3dB beamwidths shown.)
swru553-cascade-rf-design-spec-diagrams-rx-array-a-rx4-76G-sim-pattern.pngFigure 19. RX Array A, RX4, 76 GHz Operation (Maximum E-plane (Phi = 90) and H-plane (Phi = 0) slices shown. 3dB beamwidths shown.)
swru553-cascade-rf-design-spec-diagrams-rx-array-a-rx8-76G-sim-pattern.pngFigure 20. RX Array A, RX8, 76 GHz Operation (Maximum E-plane (Phi = 90) and H-plane (Phi = 0) slices shown. 3dB beamwidths shown.)
swru553-cascade-rf-design-spec-diagrams-rx-array-a-rx4-76G-sim-pattern3D.pngFigure 21. RX Array A, RX4, 76 GHz Operation (3D Antenna Gain Pattern)
swru553-cascade-rf-design-spec-diagrams-rx-array-a-rx4-78.5G-sim-pattern3D.pngFigure 22. RX Array A, RX4, 78.5 GHz Operation (3D Antenna Gain Pattern)