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This paper presents a novel broadband phase shifter that makes use of non-radiating longitudinal slots in the broad wall of a substrate integrated waveguide. The design concept is built up on different propagation constants of the TE10 mode and quasi-TEM mode, which are the fundamental modes of substrate integrated waveguides and our proposed slotted substrate integrated waveguides, respectively....
This paper presents a broadband millimetre-wave single balanced diode mixer that makes use of an innovative substrate integrated waveguide (SIW) based 180-degree hybrid, fabricated with conventional printed circuit board (PCB) technique. The proposed mixer has advantages over other previously reported millimetre-wave mixer structures judging from a series of aspects such as cost, ease of fabrication,...
This paper presents a novel sub-harmonic self-oscillating mixer (SOM) topology that makes use of the orthogonality of two operating modes in a substrate integrated waveguide (SIW) cavity. The SOM circuit consists of a dual-mode SIW band-pass filter (BPF), a common source hetero-junction FET (HJFET) and a low-pass filter. The fundamental mode (H101) of the SIW cavity is used for RF mode operation while...
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