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Signal combination using bandpass sampling

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3 Author(s)
Coulson, A.J. ; Commun. Electron. Group, Ind. Res. Ltd., Lower Hutt, New Zealand ; Vaughan, R.G. ; Scott, N.L.

A signal combination technique, based on the spectral replication property of sampling, is presented. The technique uses second-order bandpass sampling to provide some phase control over the component signals. Although the phase control is not independent between the signals and is constrained by inherent amplitude scaling, quasi-independent control can be achieved. The performance of the combination technique is established for three applications. These applications are diversity antenna combination, interception of slow frequency hopping spread spectrum, and a switchable beam, linear antenna array

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Signal Processing, IEEE Transactions on  (Volume:43 ,  Issue: 8 )