diff --git a/doc/app_notes/README.md b/doc/app_notes/README.md
index 13a2084..7e088dc 100644
--- a/doc/app_notes/README.md
+++ b/doc/app_notes/README.md
@@ -4,3 +4,4 @@ Application notes collect many small topics about using openwifi in different sc
 - [Communication between two SDR boards under AP and client mode](ap-client-two-sdr.md)
 - [Communication between two SDR boards under ad-hoc mode](ad-hoc-two-sdr.md)
 - [From CSI (Channel State Information) to CSI (Chip State Information)](csi.md)
+- [Capture IQ sample, AGC gain, RSSI with many types of trigger condition](iq.md)