MICROSTRIP MICROWAVE DIPLEXER Russian patent published in 2017 - IPC H01P1/213 

FIELD: radio engineering, communication.

SUBSTANCE: invention can be used in radio receiving and radio transmitting devices of the locating and communicating systems, including in the consumer equipment of satellite radio navigation systems Glonass, GPS for separating the signals of subbands L1, L2, L3, in the passive coherent location systems for separating TV and FM broadcasting signals. The microstrip diplexer has small dimensions while maintaining a low level of losses due to the preservation of a sufficient width of the half-wave resonator conductors. This is achieved due to the fact that in the claimed microstrip diplexer formed by combining two bandpass filters on the half-wave resonators, the extreme resonators of which are connected to the input port and the pair of output ports, the dielectric substrate contains not less than four layers, pairs of half-wave resonators of the first and the second filters, located on one layer of the substrate, are made intersecting at the midpoints that are connected to the lower and the upper shielding layers by means of metallized communication holes through the dielectric substrate layers, each pair of the intersecting half-wave resonators of the first and the second filters is located on a separate substrate layer, the connection between the half-wave resonators in each filter is performed by using the metallized communication holes through the substrate layer, on the sides of which they are located. The half-wave resonators of each filter in the adjacent layers are located orthogonally.

EFFECT: invention provides an opportunity to reduce the dimensions of the device while maintaining a low level of losses.

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