Broadband planar balanced circuit
阅读：380发布：2021-11-16
专利汇可以提供Broadband planar balanced circuit专利检索，专利查询，专利分析的服务。并且A broadband planar balanced circuit comprising the junction of slot-line and coplanar-line transmission media. The coplanar and slot lines are formed on one side of a conductively covered dielectric sheet or substrate and are axially aligned. Integrated circuit diodes are connected across the junction and react with microwave energy propagating to the junction along the coplanar and slot lines. The intersection of these two lines has the characteristics of a hybrid junction necessary for the realization of microwave integrated circuit balanced mixers and is also applicable to broadband integrated circuit balanced frequency multipliers.，下面是Broadband planar balanced circuit专利的具体信息内容。
1. A planar balanced circuit comprising a plane dielectric substrate, an electrically conductive film on one side of said substrate, a slot transmission line formed along an axis on said side of the substrate, a coplanar transmission line formed on said side of the substrate along an axis aligned with the slot line axis, said slot and coplanar lines intersecting at a junction, diode means connected across said coplanar line adjacent said junction, means for energizing with electromagnetic waves at least one of said transmission lines remote from said junction whereby to impress an alternating voltage across said diode means, and means for deriving across said diode means at least one output voltage having a frequency different from the frequency of said waves on said one of said transmission lines.
2. The circuit according to claim 1 in which said coplanar line comprises an axially extending center strip of said conductive film bounded by coextensive grooves in said film, said junction comprising the intersection of said slot line with said grooves, the center strip being spaced from the inner end of the slot line.
3. The circuit according to claim 1 with a first coaxial input line connected to said slot line remote from said junction, the axis of the coaxial line being perpendicular to the axis of the slot line, and a second coaxial input line connected to said coplanar line remote from said junction with the axis of said second coaxial line coincident with the axis of the coplanar line.
4. A planar balanced circuit comprising a plane dielectric substrate, an electrically conductive film on one side of said substrate, a slot transmission line formed along an axis on said side of the substrate, a coplanar transmission line formed on said side of the substrate along an axis aligned with the slot line axis, said slot and coplanar lines intersecting at a junction, said coplanar line comprising and axially extending center strip of said conducted film bounded coextensive grooves in said film, said junction comprising an intersection of said slot line with said grooves, the center strip being spaced from the inner end of the center of the slot line, diode means connected across said coplanar line adjacent said junction, said diode means comprising at least two diodes electrically coupled across said grooves, respectively, between said center strip and said conductive film on opposite sides of said groove, means for energizing with electromagnetic waves at least one of said transmission lines remote from said junction whereby to impress an alternating voltage across said diodes, and means for deriving across said diodes at least one output voltage having a frequency different from the frequency of said waves on said one of said transmission lines.
5. The circuit according to claim 4 with two additional diodes similarly coupled across said grooves and electrically connected to said first named diodes in a series ring arrangement, the four diodes being mixer diodes, second means for energizing the other of said transmission lines with electromagnetic waves having a frequency different from that of the waves on said one transmission line, and means for deriving from the diode ring an electromagnetic wave signal having a frequency equal to the difference in frequency of the waves on the slot and coplanar transmission lines.
6. The circuit according to claim 4 in which said diodes are varactor diodes, the odd and even harmonics of the electromagnetic waves on said one transmission line being separated and directed away from said junction along said transmission lines, respectively.
7. A balanced microwave mixer circuit comprising a dielectric sheet having an electrically conductive film on one side, axially aligned slot and coplanar transmission lines formed from said film on said side of said sheet and intersecting at a junction, said coplanar line having a center strip and ground plane spaced from and on opposite sides of the center strip, means for coupling microwave input signals having different frequencies to said transmission lines, respectively, remote from said junction whereby said signals propagate therealong to said junction, at least two diode electrically connected across said coplanar line adjacent said junction, and an output transmission line connected across said junction whereby to carry an output electromagnetic wave signal having a frequency equal to the difference between the frequencies of said input signals.
8. A balanced microwave mixer circuit comprising a dielectric sheet having an electrically conductive film on one side, axially aligned slot and coplanar transmission lines formed from said film on said side of said sheet and intersecting at a junction, said coplanar line haVing a center strip and ground plane spaced from and one opposite sides of the center strip, means for coupling microwave input signals having different frequencies to said transmission lines, respectively, remote from said junction whereby said signals propagate therealong to said junction, at least two diodes electrically connected across said coplanar line adjacent said junction, one of the electrodes of each of said diodes coupled by capacitors to said center strip of the coplanar line and the remaining electrodes of said diodes being connected to the ground planes, respectively, and an output transmission line connected across said junction whereby to carry an output electromagnetic wave signal having a frequency equal to the difference between the frequencies of said input signals.
9. The circuit according to claim 8 in which said diodes and capacitors are integrated circuit components.
10. The circuit according to claim 9 with four diodes connected across said junction in a series ring arrangement.
11. A balanced microwave frequency multiplier circuit comprising a dielectric sheet having an electrically conductive film on one side, axially aligned slot and coplanar transmission lines formed on said one side of the sheet and intersecting at a junction, means for coupling to one of said transmission lines remote from said junction a source of a microwave signal having a fundamental frequency f1, at least two varactor diodes electrically connected across said junction whereby to be biased by said coplanar line adjacent said microwave signal, and means for coupling from one of said transmission lines remote from said junction the even harmonics of said microwave signal.
12. The circuit according to claim 11 with means for coupling from the other of said transmission lines remote from said junction the odd harmonics of said microwave signal.
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