Telecommunications – Receiver or analog modulated signal frequency converter – Panoramic display
Reexamination Certificate
2008-06-02
2010-12-07
Dao, Minh D (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Panoramic display
C455S086000, C455S085000, C455S141000, C327S105000, C327S156000, C375S372000
Reexamination Certificate
active
07848719
ABSTRACT:
Variable phase ring oscillators are described that provide a linear phase progression between adjacent elements in an antenna array by providing a symmetric ring configuration of tuned amplifiers and a single phase shifter. The ring topology is coupled to a single PLL that allows for direct modulation and demodulation of arbitrary waveforms without using RF up/down converting mixers. The PLL distributes the transmit waveforms to all antenna elements in the transmit mode and combines the received waveforms in the receive mode without any complicated power distribution network. Ultra-wideband architectures and methods are described that utilize a first reference signal source, a VPRO, and a second reference signal source. Related methods are controlling an array and beam steering are also described.
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Hashemi Hossein
Krishnaswamy Harish
Dao Minh D
McDermott Will & Emery LLP
University of Southern California
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