Triple balanced mixer
First Claim
1. A triple balanced mixer for mixing an RF input signal with a local oscillator signal to provide at an output an intermediate frequency signal, comprising:
- (a) a plurality of planar ceramic layers, the plurality of planar ceramic layers including a top layer, a bottom layer and inner layers;
(b) a plurality of vias interconnecting the ceramic layers;
(c) a plurality of circuit lines located on the ceramic layers and connected to the vias;
(d) at least one diode ring mounted to the top layer and electrically connected to the vias;
(e) at least one balun mounted on the inner layers and electrically connected to the vias;
(f) a transformer mounted to the top layer and electrically connected to the vias; and
(g) a plurality of leads mounted to the bottom layer and electrically connected to the vias.
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Accused Products
Abstract
A triple balanced mixer has a compact size and is readily assembled. The triple balanced mixer has a planar substrate that is formed from several layers of low temperature co-fired ceramic. The substrate has a top layer, a bottom layer and inner layers. Vias extend through the substrate. A local oscillator balun and RF balun are located on the inner layers. An intermediate frequency balun is mounted to the top layer. Diode rings are mounted on the top layer. The diode rings are electrically connected to the local oscillator balun, the RF balun and the intermediate frequency balun through the vias.
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Citations
23 Claims
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1. A triple balanced mixer for mixing an RF input signal with a local oscillator signal to provide at an output an intermediate frequency signal, comprising:
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(a) a plurality of planar ceramic layers, the plurality of planar ceramic layers including a top layer, a bottom layer and inner layers;
(b) a plurality of vias interconnecting the ceramic layers;
(c) a plurality of circuit lines located on the ceramic layers and connected to the vias;
(d) at least one diode ring mounted to the top layer and electrically connected to the vias;
(e) at least one balun mounted on the inner layers and electrically connected to the vias;
(f) a transformer mounted to the top layer and electrically connected to the vias; and
(g) a plurality of leads mounted to the bottom layer and electrically connected to the vias. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A triple balanced mixer comprising:
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(a) a planar substrate having a plurality of layers including a top layer, a bottom layer and inner layers;
(b) a plurality of vias extending through the layers;
(c) a first and a second balun located on two of the inner layers and electrically connected to the vias;
(d) two diode rings mounted on the top layer and electrically connected to the first and second baluns through the vias;
(e) a third balun mounted to the top layer and electrically connected to the diode rings through the vias; and
(f) a plurality of leads mounted to the bottom layer and electrically connected to the vias. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A triple balanced mixer comprising:
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(a) Load Pull Circuit for Oscillator a planar substrate formed from a plurality of layers of fired low temperature co-fired ceramic, the substrate including a top layer, a bottom layer and inner layers;
(b) a plurality of vias extending through the substrate;
(c) a local oscillator balun and an RF balun located on the inner layers and electrically connected to the vias, the local oscillator balun adapted to receive a local oscillator signal, the RF balun adapted to receive an RF signal;
(d) an intermediate frequency balun mounted to the top layer and electrically connected to the vias, the intermediate frequency balun adapted to provide an intermediate frequency signal; and
(e) two diode rings mounted on the top layer, the diode rings electrically connected to the local oscillator balun, the RF balun and the intermediate frequency balun through the vias, the diode rings mixing the local oscillator signal with the RF signal to provide the intermediate frequency signal. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification