From 74efebf484e7ab499156646e237d2fbf465352c2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=91=93=E5=96=B5=E9=85=B1?= <i@iotcat.me>
Date: Thu, 13 Feb 2020 00:24:13 +0000
Subject: [PATCH] Update design_component.md

---
 docs/log/design_component.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs/log/design_component.md b/docs/log/design_component.md
index 865c525..f952247 100644
--- a/docs/log/design_component.md
+++ b/docs/log/design_component.md
@@ -8,4 +8,8 @@
  - BALF-SPI2-02D3 output impendance not 50 ohms, droped
  - to 610M 80M (1140M) 530M
  - Design IF impedance for 200 ohms
+ - Learn [Smith Chart](https://www.maximintegrated.com/cn/design/technical-documents/tutorials/7/742.html)
+ - Figure out IF Table on Spec is ||
+ - to 610M 80M (1300M) 690M
+ - IF 5.6pF 220nH 220nH
  -