Microwave transformer
OwnerHarry L. Stoverinventor
Life of this patent
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Abstract
Transformer configurations especially useful in the microwave frequency range. A reliable physical center-tap is achieved by the interposition of a stub at the center of an elongated member which provides electrical contact with a reactive impedance. The circuit formed thereby allows the reflection of an r.f. short circuit to the center of the elongated portion without attendant fabrication thereon. A loop configuration for the remaining coupling means allows adjustability of electromagnetic coupling which is less sensitive to spacing of primary and secondary than the common parallel configuration.
Claims10
A center-tapped transformer for transferring energy having a center frequency 1/.lambda. comprising:
- (a) first coupling means including an elongated member and a stub member, said stub member having first and second ends, said first end conductively engaged to the center of said elongated member;
- (b) second coupling means comprising a loop overlying and inductively engaged to said first coupling means;
- and
- (c) means for providing a reactive impedance conductively engaged to said stub member at a distance of a multiple of one-quarter .lambda. from the first end of said stub member.
A center-tapped transformer for transferring energy having a center frequency 1/.lambda. comprising:
- (a) first coupling means including an elongated member and a stub member, said stub member having first and second ends, said first end conductively engaged to the center of said elongated member;
- (b) second coupling means inductively engaged to said first coupling means;
- and
- (c) means for providing a reactive impedance including an inductor and grounded capacitor conductively engaged to said stub member at a distance of one-half .lambda. from the first end of said stub member so that a direct current bias may be provided to said first coupling means.
A center-tapped transformer for transferring energy having a center frequency 1/.lambda. comprising:
- (a) first coupling means including an elongated member and a stub member, said stub member having first and second ends, said first end conductively engaged to the center of said elongated member;
- (b) second coupling means inductively engaged to said first coupling means;
- and p1 (c) means for providing a reactive impedance including an inductor conductively engaged to said stub member at a distance of one-quarter .lambda. from the first end and a grounded capacitor conductively engaged to said stub member at a distance of one-half .lambda. from the first end so that a direct current bias may be provided to said first coupling means and so that an alternating current short circuit for energy of frequency 1/.lambda. is reflected to the center of said elongated member of said first coupling means.
A center-tapped transformer for transferring energy having a center frequency 1/.lambda. comprising:
- (a) first coupling means including an elongated member and a stub member, said stub member having first and second ends, said first end conductively engaged to the center of said elongated member;
- (b) second coupling means inductively engaged to said first coupling means;
- and
- (c) means for providing a reactive impedance including an inductor conductively engaged to said stub member at a distance of one-quarter .lambda. from said first end so that a direct current bias may be provided to said first coupling means.
Dependencies are inferred from the claim text.