The frequency band pass filter design based on structural type micro-strip resonator symmetrically shaped faces. Working in 3.4-3.6 GHz frequency range with a half wave length (half-wavelength resonator) connections are out of inputs and outputs. Connector housing micro-strip (microstrip Coupler) also proposed electrical equivalent circuit of the H-shaped resonator as well. We have designed a filter prototype on PCB types Duroid 5880LZ are constants and metric equal to 1.96, the thickness of the substrate is 1.27 mm and a thickness of copper is 35 microns from the test with Instrumentation at. center frequency 3.5 GHz, with a coefficient equal to the transmission and reflection coefficient equal to -0.98 dB -26.37 dB.
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