The Effects of the Use of DRx Antenna Structure on the Rx Performance of Smartphones

Abstract

Receiving the power emitted from the base station by smart phones and providing effective signaling is seen as a very critical problem. In order to eliminate this situation, some antenna technologies have been developed and started to be used in smart devices. The smart phones, which were developed by adhering to the DRx (Diversity Receive) design scheme, best perceived the signals emitted from the base station, thus increasing the Rx performance of the developed products. Typical integrated (total) surface metrics include Total Radiated Power (TRP) and Total Isotropic Sensitivity (TIS). TIS and TRP metrics have become increasingly important for carriers, because a TRP measurements used to verify your transmitter or transmitter antenna design. A TIS measurement used to verify how your receiver or receiver antenna design performs. In this study, we aimed to determine the Rx performance of the DRx scheme used in smartphones by using 3D radiation test setup (TIS - Total Isotropic Sensitivity).

Keywords

• DRx (Diversity Receive) module
• EIRP measurement
• OTA test
• Radiation efficiency for mobile phones
• 3D TIS test for mobile

References

1. Crawford, M. L., & Koepke, G. H. (1986). Design, evaluation, and use of a reverberation chamber for performing electromagnetic susceptibility/vulnerability measurements. NBS technical note 1092. NBS Publication. Retrieved from https://nvlpubs.nist.gov/nistpubs/Legacy/TN/nbstechnicalnote1092.pdf
2. Feng, Y., & Schroeder, W. L. (2009). Extending the definition of TIS and TRP for application to MIMO OTA testing. COST 2100 TD, 866(9). Valencia, Spain.
3. International Telecommunication Union. (2019). Guideline for general test procedure and specification for measurements of the LTE, 3G/2G user equipment/mobile stations (UE/MS) for over-the-air performance testing.TP-TEST-UE-MS.
4. Remley, K. A., Wang, C. J., Williams, D. F., & Toorn, J. J. (2016). A significance test for reverberation-chamber measurement uncertainty in total radiated power of wireless devices. IEEE Trans. Electromagnnetic. Compatibility, 58(1), 207-219.