Wave transmission lines and networks – Coupling networks – Delay lines including long line elements
Reexamination Certificate
2008-04-08
2008-04-08
Pascal, Robert J. (Department: 2817)
Wave transmission lines and networks
Coupling networks
Delay lines including long line elements
C333S139000, C333S140000, C333S161000
Reexamination Certificate
active
07355492
ABSTRACT:
The inventions presented herein provide a electronically controlled phase shifters that incorporate analog and digital phase shift architectures in a novel manner that realizes the best advantages of each architecture. This combination of complementary phase shift architectures provides the high-performance and low loss characteristics of switched digital phase shift architectures with the high resolution and precision of continuous analog phase shift architectures. The circuit embodiments are electronically controlled, which simplifies implementation of what is a complex circuit. The analog phase shift elements comprise electronically-tuned varactors, which provide fine resolution and enables the incorporation of active compensation for manufacturing variation before use or for environmental conditions during use.
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Hyman Daniel J.
Kuroda Roger T.
Glenn Kimberly E
Pascal Robert J.
Smith , Gambrell & Russell, LLP
Xcom Wireless
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