Meaning
Interface coexistence configurations in multi-radio devices manage the simultaneous operation of wireless networks in the newly opened six-gigahertz band. Proper wi-fi 6e co-location design prevents the high-power cellular transmitters from desensitizing the sensitive wireless local area network receiver. This design task is critical for maintaining high throughput when both radios are active at the same time.
Interface Coexistence
Close antenna placement inside the device housing creates a direct path for interference between the different wireless modules. When the cellular transmitter operates, its out-of-band emissions can leak into the receiver band of the wireless network. This coupling must be mitigated to prevent the wireless connection from dropping or slowing down.
Filtering Rejection
High-rejection bandpass filters are integrated into the receive paths to block the unwanted signals from the adjacent transmitters. These filters must offer high attenuation in the cellular bands while maintaining a low insertion loss in the wireless band. This balance is difficult to achieve and requires the use of advanced thin-film or acoustic wave filter technologies.
Test Configuration
Verifying the performance requires a test bench that can measure the throughput of the wireless connection while the cellular transmitter is running at maximum power. The test laboratory uses a shielding chamber to isolate the device from external signals and logs the packet loss rate. This testing confirms that the coexistence measures are effective under worst-case operating conditions, ensuring that the final product meets both user expectations and regulatory requirements.
