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A circularly-polarized (CP) filter/antenna system is presented herein. The filter/antenna system is formed by a cavity resonator and a single-fed corner-truncated patch antenna. The corner-truncated patch works as both a resonator of the cavity filter and a CP radiating element. By vertically integrating the CP patch antenna with the cavity resonator, a second-order filtering response is obtained...
For microstrip patch phased arrays, larger fractional bandwidth (FBW) and wider scan angle are challenging to achieve at the same time. Phased arrays on thin substrates typically can scan to large angles due to the reduction of mutual coupling caused by surface waves. However, thin substrates limit the achievable FBW of the phased array antenna. In this paper, an integrated filter/patch technology...
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