(a) Measurement position

Fig. 65. Measurement position (a) and (b) result of LCD Panel control circuit.

#### **7.4 Summary**

222 Wireless Communications and Networks – Recent Advances

(a) Measurement position

(b) Measured result of S21

(a) Measurement position

(b) Measured result of S21

Fig. 64. Measurement position (a) and (b) result of LCD Panel control circuit.

Fig. 63. Measurement position (a) and (b) result of LCD Panel control circuit.

Since the development of IC technologies advancing toward nm processing technology and higher operating frequencies in recent years, the systems of highly integrated high-speed digital circuits and multi-radio modules are now facing the challenge from performance degradation by more complicated electromagnetic noisy environment. With the development of the analyzing and measuring methodologies for this wireless platform noise problem and establishment of noise budget for digital component in the near future, we can provide the EMI coupling mechanism and noise level for each component to help system engineer analyze and design the EMC compliant wireless product in the first beginning as shown in Figure 66 and 67.

Fig. 66. Noise budget consideration for touch panel.

Fig. 67. System view for noise budget.
