Abstract: A waveguide type duplex filter having first and second waveguides which each comprise filtering means tuned to a given frequency, comprises two halves having a conducting surface. Faces directed toward each other are formed with channels which, when the halves have been assembled, constitute said waveguides. The filtering means are produced by means of a sheet having a conducting surface arranged between the two halves, and the conducting surface has openings which define and delimit resonators in the waveguides. The sheet can be arranged in first and second positions. In the first position, the resonators in the first waveguide are tuned to a first frequency, while the resonators in the second waveguide are tuned to a second frequency. In the second position, the resonators in the first waveguide are tuned to the second frequency, while the resonators in the second waveguide are tuned to the first frequency.

Abstract: A waveguide type duplex filter (1) having first and second waveguides which each comprise filtering means tuned to a given frequency, comprises two halves (2, 3) having a conducting surface. Faces directed toward each other are formed with channels (7, 8, 9 and 10) which, when the halves have been assembled, constitute said waveguides. The filtering means are produced by means of a sheet (4) having a conducting surface arranged between the two halves (2, 3), and the conducting surface has openings which define and delimit resonators in the waveguides. The sheet (4) can be arranged in first and second positions. In the first position, the resonators in the first waveguide are tuned to a first frequency, while the resonators in the second waveguide are tuned to a second frequency. In the second position, the resonators in the first waveguide are tuned to the second frequency, while the resonators in the second waveguide are tuned to the first frequency.