Near-Field Amplitude Measurement of Passive Intermodulation in Antennas

Near-Field Amplitude Measurement of Passive Intermodulation in Antennas

Near-field measurement method of passive intermodulation (PIM) in antennas is introduced. Scanning with a near-field probe inside an antenna structure is proposed to be used to localise passive intermodulation sources and, thus, to speed up e.g. antenna design. For the amplitude measurement a mechan...

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Bibliographic Details
Published in:2001 31st European Microwave Conference pp. 1 - 4
Main Authors: Hienonen, S., Golikov, V., Mottonen, V. S., Vainikainen, P., Raisanen, A. V.
Format: Conference Proceeding
Language:English
Published: IEEE 01-09-2001
Subjects:
Antenna measurements
Base stations
Diodes
Distortion measurement
Intermodulation distortion
Magnetic field measurement
Microstrip antennas
Nonlinear distortion
Probes
Receiving antennas
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Summary:Near-field measurement method of passive intermodulation (PIM) in antennas is introduced. Scanning with a near-field probe inside an antenna structure is proposed to be used to localise passive intermodulation sources and, thus, to speed up e.g. antenna design. For the amplitude measurement a mechanical scanner and a low-PIM probe are needed in addition to a PIM analyser. Two demonstration measurements with a matched microstrip line and stacked patch antenna incorporating a diode were made at 910 MHz. The diode caused a 21 dB peak in the microstrip line and a 16 dB peak in the antenna measurement.
DOI:10.1109/EUMA.2001.339019