diff --git a/examples/wifi/antenna/main/antenna_switch_example_main.c b/examples/wifi/antenna/main/antenna_switch_example_main.c
index af9e1ccd4f..502bf40c58 100644
--- a/examples/wifi/antenna/main/antenna_switch_example_main.c
+++ b/examples/wifi/antenna/main/antenna_switch_example_main.c
@@ -127,6 +127,8 @@ void wifi_init_sta(void)
     };
     ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
     ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config) );
+    /* Disable WI-FI Modem sleep can keep PHY always enabled */
+    ESP_ERROR_CHECK(esp_wifi_set_ps(WIFI_PS_NONE) );
     ESP_ERROR_CHECK(esp_wifi_start() );
 
     ESP_LOGI(TAG, "wifi_init_sta finished.");