Reflection loss suppression circuit

Details Reflection loss suppression circuit Reflection loss suppression circuit

2006-10-31

2006-10-31

Jones, Stephen E. (Department: 2817)

Wave transmission lines and networks

Coupling networks

With impedance matching

C333S035000, C333S02200F

Reexamination Certificate

active

07129804

ABSTRACT:
An object is to suppress a reflection loss in any desired frequency band outside a required band, without affecting circuit characteristics in the required frequency band. The output impedance of a circuit in a specified frequency band is transformed into a high impedance by a transmission line15. A resistance grounding circuit18having a frequency selectivity is connected in parallel. The resistance grounding circuit18is constructed of a resistor16which has a resistance close to a load resistance, a capacitance C which is selected so as to satisfy an equation Im[tan h{γ(λ/2−δ)}]=−ω0CZ0at an angular frequency ω0included in the frequency band, and a (λ/2−δ)-long end-open stub.

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