Definition
Wi-Fi is a wireless communication technology based on the IEEE 802.11 standards family, used to connect devices to the internet and local networks without the need for cables.
It is widely used in homes, businesses, schools, airports, and embedded devices (IoT).
How does Wi-Fi work?
Wi-Fi operates in 2.4 GHz, 5 GHz, and more recently 6 GHz (Wi-Fi 6E) frequency bands, using digital modulations like OFDM and multiple access techniques like MIMO (Multiple Input, Multiple Output).
The network consists of:
- Access Point: emits Wi-Fi signal (e.g., router)
- Client device: laptop, smartphone, sensor, etc.
- Backhaul: internet connection (fiber like GPON for example, DOCSIS, etc.)
Main Wi-Fi Standards
| Version | Technical Name | Frequency | Bandwidth | Theoretical Speed |
|---|---|---|---|---|
| Wi-Fi 4 | 802.11n | 2.4 / 5 GHz | 20–40 MHz | Up to 600 Mbps |
| Wi-Fi 5 | 802.11ac | 5 GHz | 80–160 MHz | Up to 3.5 Gbps |
| Wi-Fi 6 | 802.11ax | 2.4 / 5 GHz | 20–160 MHz | Up to 9.6 Gbps |
| Wi-Fi 6E | 802.11ax | 6 GHz (new) | 160 MHz | Up to 9.6 Gbps |
| Wi-Fi 7 | 802.11be | 2.4 / 5 / 6 GHz | 320 MHz | > 30 Gbps (theoretical) |
Applications in Testing and Measurement
In the production testing of Wi-Fi devices (modems, routers, embedded modules), the following are verified:
- Calibration
- IEEE 802.11 standards compliance
- Error rate (PER, BER)
- Wi-Fi connectivity and authentication
- SNR, real throughput, and latency
Tools and instruments used:
- LitePoint IQxel
- Rohde & Schwarz CMW270, Keysight N4010A
- Automation software: LabVIEW, TestStand, Python
- Traffic simulators and Wi-Fi spectrum analyzers
📡 How AJOLLY Testing supports your Wi-Fi project
AJOLLY Testing offers full support for projects with Wi-Fi technology (Wi-Fi 4, 5, 6, 6E, and 7), from development to validation and production. We work with:
- 🛠️ Development and manufacturing of complete test benches, tailored to the product and RF measurement requirements
- 🔧 Custom test jig designs, with manual, pneumatic, or automated actuation, for modems, routers, gateways, and IoT devices
- 📶 Wi-Fi connectivity and authentication tests (2.4 GHz, 5 GHz, and 6 GHz)
- 📊 Measurements of SNR, real throughput, latency, EVM, and power
- 🧪 Error rate tests (PER, BER), RF sensitivity, and robustness
- 🧬 Tests for embedded modules (ESP32, SiP Wi-Fi), industrial or consumer devices
- 🧩 Integration with LitePoint, Rohde & Schwarz, Keysight, NI instruments
- ⚙️ Automation of test sequences with LabVIEW, TestStand, or Python
- 🧬 Functional and RF tests for embedded modules, gateways, modems, and IoT
- 🧼 Solutions for laboratories, anechoic chambers, or production environments with RF isolation (shield boxes, anechoic chambers)
We combine expertise in RF, automation, and product validation.