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A biased star mixer at K-band is presented. The design is realized in low temperature co-fired ceramics, benefiting from the possibility of including printed dielectrics with a high relative permittivity between layers. With this feature, small scale DC-blocks are introduced to the Marchand balun in order to allow for the application of an external bias voltage. Simulation shows that the wide bandwidth...
This article presents integration techniques for realizing hybrid K-band image rejection mixer (IRM) modules in low temperature cofired ceramic substrates. The required couplers are integrated together with a pair of mixers in one single ceramic package, making extensive use of the multilayer capabilities of the host substrate. The module operates in a frequency range from 18 - 32 GHz with acceptable...
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