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In this paper, the implementation of an X band Tx-to-Rx leakage cancellation network to achieve bandwidth improvement and high isolation performance is presented. The circuit architecture and leakage cancellation theory are described in detail. The operation principle of leakage cancellation network is based on phase cancellation technique. This architecture is made up of three two-section Wilkinson...
In this paper, a compact diplexer using substrate integrated waveguide (SIW) resonators is introduced. The diplexer consists of two filters and a circulator. The diplexer channels are 4% and 5% relative bandwidth at 32GHz and 33GHz, respectively. The filters are based on SIW resonators, which have higher Q values. This paper also analyzed the factors which affect the Q value of resonators, and describes...
The substrate integrated waveguide (SIW) technique realizes that the rectangular waveguide of solid structure are fabricated in planar form using a printed circuit board, which has many advantages such as high Q-factor, low loss, low cost, relatively high-power capacity, and high-density integration of microwave and millimeter wave components. In this paper, A ka-band substrate integrated waveguide...
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