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AN13887
K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer
Coexistence
Rev. 1 — 27 October 2023
Document information
Information
Keywords
Abstract
Content
AN13887, K32W148, IEEE 802.15.4, noise interference, sinewave interference, Bluetooth
audio interference, Wi-Fi interference, carrier-to-noise ratio, packet error rate, adjacent-channel
interference
This document provides the RF system evaluation test results of NXP K32W148 MCU for IEEE
802.15.4 applications with coexistence of these interferers: noise, sinewave, Bluetooth audio, and
Wi-Fi.
Application note
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Table of Contents
Related Manuals for NXP Semiconductors AN13887
Summary of Contents for NXP Semiconductors AN13887
- Page 1 Document information Information Content Keywords AN13887, K32W148, IEEE 802.15.4, noise interference, sinewave interference, Bluetooth audio interference, Wi-Fi interference, carrier-to-noise ratio, packet error rate, adjacent-channel interference Abstract This document provides the RF system evaluation test results of NXP K32W148 MCU for IEEE 802.15.4 applications with coexistence of these interferers: noise, sinewave, Bluetooth audio, and...
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Page 2: Introduction
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence 1 Introduction This document provides the RF system evaluation test results of NXP K32W148 MCU for IEEE 802.15.4 applications with coexistence of these interferers: noise, sinewave, Bluetooth audio, and Wi-Fi. The tests are based on offset quadrature phase-shift keying (OQPSK) modulation. -
Page 3: List Of Tests
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence • R&S SMBV100A for generating the desired IEEE 802.15.4 signal. Any generator with ARB can be used as IEEE 802.15.4 signal generator. • PC equipped with a general-purpose interface bus (GPIB) card To communicate with the K32W148 MCU, the PC should have Tera Term installed. -
Page 4: Noise Interference Tests
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence Figure 3 shows the setup diagram of the noise interference test. SMBV100A: IEEE 802.15.4 signal generator Trigger SFU: White noise generator I2C / UART RF cable... -
Page 5: C/N Vs Frequency Test
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence 2.2.1 C/N vs frequency test Test method Follow these steps to perform the C/N vs frequency test: 1. Configure the K32W148 radio as follows: • RX mode •... -
Page 6: Sinewave Interference
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence Follow these steps to perform the PER vs C/N test: 1. Configure the K32W148 radio as follows: • RX mode • Modulated • Continuous mode • Frequency: From channel 11 (2405 MHz) to channel 26 (2480 MHz) 2. -
Page 7: Sinewave Interference Test Setup
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence 3.1 Sinewave interference test setup Setup diagram Figure 7 shows the setup diagram of the sinewave interference test. SMBV100A: IEEE 802.15.4 signal generator Trigger SFU: Sinewave generator... -
Page 8: Bluetooth Audio Interference
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence 1. Configure the K32W148 radio as follows: • RX mode • Modulated • Continuous mode • Frequency: Channel 18 (2440 MHz) 2. Configure the desired signal on the signal generator as follows: •... -
Page 9: Bluetooth Audio Interference Test
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence SMBV100A: IEEE 802.15.4 signal generator Trigger SFU: ARB Bluetooth LE signal generator I2C / UART RF cable Spectrum analyzer RF combiner Figure 10. Bluetooth audio interference test setup... -
Page 10: Wi-Fi Interference
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence • Modulated • Continuous mode • Frequency: Channel 11 (2405 MHz), channel 18 (2440 MHz), channel 21 (2455 MHz), and channel 26 (2480 MHz) 2. Configure the desired signal on the signal generator as follows: •... -
Page 11: Wi-Fi Interference Test Setup
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence 5.1 Wi-Fi interference test setup Setup diagram Figure 13 shows the setup diagram of the Wi-Fi interference test. SMBV100A: IEEE 802.15.4 signal generator Trigger SFU: ARB Wi-Fi signal generator... -
Page 12: Wi-Fi Interference Tests
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence 22 MHz Power 5 MH IEEE 802.15.4 Wi-Fi 802.11n 20 MHz Frequency 2405 MHz 2462 MHz CH11Z CH11W Figure 14. ACI test settings 20 MHz 22 MHz Power IEEE 802.15.4... -
Page 13: Co-Channel Test
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence 5. Decrease the IEEE 802.15.4 signal power level until the criteria PER = 1% is met. Test results Figure 16 shows the results of the ACI test where Wi-Fi is at 2462 MHz frequency and PER (sensitivity) is at Wi-Fi input power (dBm) Figure 16. IEEE 802.15.4 and Wi-Fi coexistence ACI test results... -
Page 14: Acronyms
AN13887 NXP Semiconductors K32W148 RF System Evaluation for IEEE 802.15.4 Applications with Interferer Coexistence Wi-Fi input power (dBm) Figure 17. IEEE 802.15.4 and Wi-Fi coexistence co-channel test results Conclusion The ratio between unwanted and wanted power is constant at around 9 dB for a Wi-Fi interferer up to 0 dBm. -
Page 15: Legal Information
NXP Semiconductors. In the event that customer uses the product for design-in and use in In no event shall NXP Semiconductors be liable for any indirect, incidental, automotive applications to automotive specifications and standards, punitive, special or consequential damages (including - without limitation - customer (a) shall use the product without NXP Semiconductors’... -
Page 16: Table Of Contents
Please be aware that important notices concerning this document and the product(s) described herein, have been included in section 'Legal information'. © 2023 NXP B.V. All rights reserved. For more information, please visit: https://www.nxp.com Date of release: 27 October 2023 Document identifier: AN13887...
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