Content-based adaptive parasitic array antenna system
US6492942B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 7, 2000 |
| Grant date | Dec 10, 2002 |
| Priority date | — |
| Expiry date | Nov 7, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/086
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An adaptive parasitic array antenna system having properties of directive gain, self-pointing and interference rejection is provided including an adaptive parasitic array antenna comprising at least one active element and one or more parasitic elements coupled to controlled impedances (CI). The system further comprises a transceiver, a content-based optimization criterion computation module (CBOCCM), and a control variable optimizer (CVO). The CBOCCM receives a signal waveform from the active element through the transceiver, and computes an optimization criterion (OC) based on the content of the received signal. The optimization criterion is coupled to the CVO, which adaptively computes one or more control variables (CV), which are coupled to the controlled impedances CI in order to adjust the beampattern created by the adaptive parasitic array antenna. Also disclosed are two preferred adaptation implementations and algorithms, a pilot-tone based adaptation system, and a decision-directed based adaptation system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.