Telecommunications – Transmitter – Having harmonic radiation suppression
Reexamination Certificate
2011-06-07
2011-06-07
Jackson, Blane J (Department: 2618)
Telecommunications
Transmitter
Having harmonic radiation suppression
C333S032000, C333S176000
Reexamination Certificate
active
07957706
ABSTRACT:
A combined matching and harmonic rejection circuit with increased harmonic rejection provided by a split resonance for one or more of the capacitive or inductive elements of the circuit. At a fundamental frequency, the circuit comprises an inductive series arm with capacitive shunt arms. The capacitance of a shunt arm may be provided by two or more parallel paths, each having a capacitor and an inductor in series so that, in addition to providing the effective capacitance necessary for impedance matching at the fundamental frequency, two separate harmonics represented by the series resonances of the parallel paths are rejected. In this manner, an extra null in the circuit's stop-band may be achieved using the same number of shunt elements necessary to achieve impedance matching at the fundamental frequency.
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Jain Nitin
Onno Peter
Rajanish Rajanish
Weigand Christopher D.
Jackson Blane J
M/A-COM Technology Solutions Holdings Inc.
Maiorana PC Christopher P.
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