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A broadband coplanar‐to‐rectangular waveguide transition using contactless electromagnetic bandgap (EBG) structure in the form of interdigital‐pin bed of nails has been introduced in this paper. The electromagnetic (EM) wave propagates from the CPW, and then radiates from the probe into the WR4. The rectangular patch is adopted as the probe to accomplish a broadband performance without an impedance...
Wide band cross bow tie (CBT) antenna with circular polarization (CP) and good gain operating at X band has been presented for satellite communication. Impedance transition from imbalanced 50 ohms to balanced 100 ohms is carried out by using exponential tapered microstrip line. Geometry modification of CBT for getting CP property is proposed in this work. Proposed compact, circular polarized cross...
Two novel designs of compact circularly polarized (CP) monopole antennas are proposed and investigated in this paper. The first antenna, consisting of a printed L-shaped monopole and a tilted cross on the ground plane, exhibits 1.160∼2.042 GHz (55.10%) measured −10 dB impedance bandwidth, as well as 1.356∼1.637 GHz (18.78%) and 1.794∼2.487 GHz (32.38%) measured 3 dB AR bandwidths. Antenna 2 with a...
This paper proposed a wideband antenna for global navigation satellite systems (GNSSs). The antenna has a −10 dB impedance bandwidth of 62.40% from 0.86 GHz to 1.64 GHz, 3 dB axial ratio (AR) bandwidth of 51.30% from 1.00 GHz to 1.69 GHz. Its circularly polarized (CP) bandwidth of 48.48% from 1.00 to 1.64 GHz covers the full band of four GNSSs (GPS, GLONASS, Compass and Galileo). In addition to utilizing...
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