**2.2 De-Sense effect**

DeSense is the term representing the noise impact degree on receiver sensitivity. This section will address on the popular TP and camera module about their roles on interference with embedded antenna and discuss the De-sense effect from platform noise coupling.

Nowadays, Touch Panel (TP) and camera module both occupy large part on the smartphone, Tablet PC or NB. Hence no matter where the embedded antennas are placed, the noise emitted from TP and Camera will couple to antenna and thus result in DeSense (Degradation of Sensitivity) problem. On the other hand, all the RF power transmitted by embedded antennas of the wireless products will also couple to nearby TP and camera modules. Those proximate electric (E) and magnetic (H) field coupling will affect normal operation of TP and camera modules.

Figure 9 shows the antenna locations under investigation. In addition, Figure 10 shows the Path-Loss measurement setup and test procedures as following[4]:

1. Put EUT into shielding box.

184 Wireless Communications and Networks – Recent Advances

Fig. 8. Alternative way for testing relative sensitivity of intermediate channels.

DeSense is the term representing the noise impact degree on receiver sensitivity. This section will address on the popular TP and camera module about their roles on interference with embedded antenna and discuss the De-sense effect from platform noise coupling.

Nowadays, Touch Panel (TP) and camera module both occupy large part on the smartphone, Tablet PC or NB. Hence no matter where the embedded antennas are placed, the noise emitted from TP and Camera will couple to antenna and thus result in DeSense (Degradation of Sensitivity) problem. On the other hand, all the RF power transmitted by embedded antennas of the wireless products will also couple to nearby TP and camera modules. Those proximate electric (E) and magnetic (H) field coupling will affect normal

**2.2 De-Sense effect** 

operation of TP and camera modules.


Fig. 9. Antenna locations on laptop display.

Fig. 10. Test setup to measure Path-Loss.
