Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Reexamination Certificate
2005-10-04
2005-10-04
Jeanpierre, Peguy (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
C341S145000
Reexamination Certificate
active
06952177
ABSTRACT:
A traveling wave multiplying digital-to-analog converter has propagation-delay matched transmission lines for conversion of a high data rate digital input to a high frequency RF analog output, for example, at microwave and millimeter wave frequencies and above. The traveling wave multiplying digital-to-analog converter includes an array of constant, high impedance multiplying cells that are identical to improve component matching and propagation delay matching. The multiplying cells are connected in a spatial interleaving manner along bit lines that propagate the high bandwidth digital input. The interleaving effects a “spatial averaging” that maintains linearity of digital to analog conversion in the presence of any linear gradient δ from one cell to another across the array of multiplying cells.
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Jeanpierre Peguy
Lauture Joseph
Shimokaji & Associates P.C.
The Boeing Company
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