Three port structure with modulated LO signal
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United States of America Patent
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Jun 8, 2004
Grant Date -
N/A
app pub date -
Sep 28, 2000
filing date -
Sep 29, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A three port structure for the down conversion demodulation of a digitally modulated RF signal is proposed, wherein no RF switches are provided. The three port structure (1) has a first input (2) for the RF signal to be down converted and a second input (3) for a RF signal originating from a local oscillator (8). An output (4) of the three port structure (1) is supplied to a power sensor unit (5). The RF signal from the local oscillator (8) is modulated (7) before it is supplied to the three port structure (1).
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