Bandwidth high-power T network tuner
OwnerMartin F. Jueinventor
Life of this patent
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Abstract
A wide bandwidth high-power T network tuner obtains its wide bandwidth operation by connecting a fixed capacitor between the input and ground, with the tuner using large, series connected variable capacitors for high power so as to solve the minimum capacitance problem on the higher frequencies, with the input and output matching capacitors being independent one from the other.
Claims21
A T network tuner comprising:
- a variable input matching capacitor;
- a variable output matching capacitor connected to said input matching capacitor;
- an inductor coupled between said input and output matching capacitors to ground;
- and,
- a shunt capacitor between the input to said input matching capacitor and ground of sufficient value to effectively lower the minimum input capacitance associated with said input matching capacitor, thus to permit matching of high resistance loads in the upper frequencies of said tuner.
An ultra-wide bandwidth high power antenna tuner, comprising:
- interconnected independent input and output variable matching capacitors;
- a variable inductor connected between said input and output matching capacitors and ground;
- and,
- a shunt capacitor coupled between the input of said input matching capacitor and ground.
In a T network tuner having independent variable input and output matching capacitors, a method for increasing the matchable resistive load for frequencies at the high tuner ranges, comprising the step of:
- providing a shunt capacitor at the input matching capacitor between the input end of the input matching capacitor and ground.
A method for extending the matching range of a T network tuner having independent variable input and output matching capacitors and an inductor coupled therebetween and to ground, comprising the step of:
- connecting a shunt capacitor between the input end of the input matching capacitor and ground, whereby the maximum load resistances that can be matched at is increased above that associated with the minimum input matching capacitor capacitance.
Dependencies are inferred from the claim text.