Iterative Approach for the Nonlinear Simulation of Active Antennas

Romier, M.; Barka, André; Aubert, Hervé; Martinaud, Jean-Paul; Soiron, Michel

doi:10.1109/aps.2009.5172338

Cited by 1 publication

(2 citation statements)

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“…As mentioned, the PA non-linearity affects the input signals into the antenna elements, which in turn change the radiated fields. Studies this far have determined that active impedance affects mostly side-lobe levels [15], [16], but in large arrays there exists also a possibility of negative impedance at single element ports [17]. Calculating the behavior of amplifier or antenna array separately is simple as antenna by itself is linear, and input signals of amplifier can be chosen arbitrarily in modern active load-pull measurements.…”

Section: Introductionmentioning

confidence: 99%

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Amplifier-Antenna Array Optimization for EIRP by Phase Tuning

Kutinlahti¹,

Lehtovuori²,

Viikari³

2022

2022 16th European Conference on Antennas and Propagation (EuCAP)

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In this paper, we analyse an antenna array fed with element-specific phase shifters and amplifiers. The elements of the array are mutually coupled and the operation of the amplifiers depend on the load impedance presented by the array. We derive a method for maximizing EIRP in a given direction and demonstrate the concept by simulations with 2x2 array fed with element-specific phase shifters and amplifiers at 2.5 GHz. Compared to the reference case, the optimization provides up to 0.7 dB improvement in EIRP in the −3 dB beam steering range.

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Section: Introductionmentioning

confidence: 99%

“…Modelling the combined behavior on the other hand is more complicated, because of multiple transmitters affecting each other. Multiple models for emulating the non-linear behavior of amplifiers in antenna arrays, or multi-port systems in general, have been devised [18], [19].…”

Section: Introductionmentioning

confidence: 99%