Non-Invasive Highly Integrated Transformer Power Detector for Self-Healing PA in 130nm H9SOI-FEM CMOS Technology

Boris Moret (1, 2) , Eric Kerherve (1) , Vincent Knopik (2)

1 IMS - Laboratoire de l'intégration, du matériau au système
2 ST-CROLLES - STMicroelectronics [Crolles]

This paper presents a non-invasive Power Detector (PD) fully integrated with a 5.8GHz differential Power Amplifier (PA). A symmetrical balun provides the differential to single-ended transformation, while presenting the optimal load to the PA. The PD is connected to a sense circuit placed within the output network of the PA. This sensor consists of a third coil added in the center of the output balun to couple a very low part of the RF power going through the transformer. The PD remains non-invasive for the PA performances. It achieves a dynamic range of 10dB with an accuracy of ± 0.2 dB with a power consumption lower than 250μW. This paper highlights a way to realize output matching networks for Self-Healing Differential PAs by using a transformer which performs both output matching, conversion mode and non-invasive power sensing.

Mots clés: transformer; antenna mismatch; power detector; integrated circuit; cmos SOI; noninvasive; power amplifier

Domaines: Electronique

Boris Moret, Eric Kerherve, Vincent Knopik. Non-Invasive Highly Integrated Transformer Power Detector for Self-Healing PA in 130nm H9SOI-FEM CMOS Technology. 2016 11th European Microwave Integrated Circuits Conference (EuMIC), Oct 2016, Londres, United Kingdom. ⟨hal-01618214⟩