Distributed miniature band-pass balance filter
A technology of balanced filter and micro-strip, applied in the field of filter, to achieve the effect of flat in-band, high reliability and excellent electrical performance
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[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0012] Combine figure 1 , The present invention is a distributed miniature band-pass balanced filter. The miniature band-pass balanced filter package includes a surface-mounted 50 ohm impedance input port P1, an input inductor Lin, a first-stage parallel resonant unit L1 C11 C12, a second Level parallel resonant unit L2 C21 C22, third level parallel resonant unit L3 C31 C32, fourth level parallel resonant unit L4 C41 C42, first Z-shaped inter-stage coupling stripline LC1, second Z-shaped inter-stage coupling stripline LC2, the first output inductor Lout1, the surface-mounted 75-ohm impedance balanced output port P2, the second output inductor Lout2, the surface-mounted 75-ohm impedance output port P3; the input port P1 resonates in parallel with the first stage through the input inductor Lin The second-level stripline L1 in the unit is connected, the balanced ou...
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