1. Array Noise Matching via the Scattering Matrix.
- Author
-
Findeklee, Christian
- Subjects
ANTENNA arrays ,S-matrix theory ,TELECOMMUNICATION ,RADIO astronomy ,SIGNAL-to-noise ratio - Abstract
Array antennas are increasingly used for transmission and reception in applications such as telecommunication, medical imaging, radar, or radio astronomy. Low-loss matching networks are inserted in each channel between the antenna and amplifiers in order to optimize power transfer in transmission and/or signal-to-noise ratio (SNR) in reception. The adjustment of these matching components becomes challenging if residual coupling between antenna elements significantly influences the results. The most general, so-called, array noise matching then leads to the optimum SNR taking into account the noise-coupling effects also. This paper describes that concept completely in the scattering matrix domain using waves for signal and noise rather than voltages and currents. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF