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A novel microstrip bandpass filter with multiple transmission zeros is proposed, where two half‐wavelength resonators loaded by short‐circuited stubs are implemented into its design. A section of coupled lines and a grounded via‐hole are introduced to serve as a capacitor and an inductor, respectively. Then, four controllable transmission zeros can be successfully obtained, and the locations of two outer transmission zeros are controlled by the diameter of the via‐hole. A second‐order filter sample with better frequency selectivity and wide stopband was fabricated using standard printed circuit board (PCB) technology, and its measured S‐parameters agree well with the simulated ones. [ABSTRACT FROM AUTHOR]