Suppression of Connector Radiation Coupling to Antenna by Phase Cancellation
Journal
IEEE Electrical Design of Advanced Packaging and Systems Symposium
Start Page
1
End Page
3
ISSN
21511225
ISBN (of the container)
979-833159659-0
Date Issued
2026-03-03
Author(s)
Abstract
A decoupling network (DN) is presented to suppress differential-mode (DM) noise radiated from high-speed connectors to nearby antennas. The proposed method utilizes two couplers and a phase delay line to generate a cancellation signal with a precisely controlled magnitude and phase. Theoretical analysis shows that for effective suppression, the phase error must be maintained within ±60° of the ideal 180° anti-phase condition. For experimental validation, a USB Type-A connector and a PIFA antenna were used as the aggressor and victim, respectively. Simulation results show the importance of choosing the effective electrical length of the delay line, and the implemented DN achieves an 18.6 dB DM noise suppression at 2.48 GHz, confirming the effectiveness of the d
Event(s)
2025 IEEE Electrical Design of Advanced Packaging and Systems, EDAPS 2025
Subjects
decoupling network (DN)
Differential-mode (DM) noise
Radio Frequency Interference (RFI)
Publisher
IEEE
Type
conference paper