Abstract
AbstractA new single feed system is presented for broadband and high gain circularly polarized stacked microstrip (CPSM) array applications. It consists of a combination of a microstrip line and a via. The gap between elements and location of the feed are optimized to achieve a good circular polarization (CP) performance with high gain. A 2 × 2 sequentially rotated array was fabricated and tested. The measured 3 dB axial‐ratio (AR) bandwidth is 27% (3.5–4.6 GHz) and at boresight gain is 9.0 dBic over the 3 dB AR bandwidth. The measured 10 dB return loss impedance bandwidth is around 51% (3.28–5.54 GHz). The proposed new feeding network system is very useful to design the high gain and wideband CP array in a space‐limited environment. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1784–1789, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23481
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