Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2005-08-09
2005-08-09
Chang, Daniel (Department: 2819)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S025000, C333S104000
Reexamination Certificate
active
06927647
ABSTRACT:
A dual channel, RF switch with broadband frequency response is provided wherein an RF signal input to a transformer is provided to a first and second biasing circuit. Each biasing circuit includes one or more DC blocking capacitors and a biasing PIN diode. Thus the biasing circuit provides an RF output to an output port. A biasing circuit control signal selectively controls each biasing circuit. When a biasing circuit is biased, it presents a very low resistance to the output load, while in an unbiased condition; the biasing circuit provides a very high resistance or impedance to the output load. The PIN diode provides for a biasing element through which the RF signal does not flow.
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Kane David V.
Starri Ernesto G.
Bourque & Associates
Chang Daniel
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