Abstract
A novel dual-band printed end-fired antenna with double-sided parallel-strip line (DSPSL) feeding is presented. The DSPSL acts in wideband transition using balanced transmission. Two different modes of the parasitic patches allow the antenna to work in different bands. The printed antenna is designed as a quasi-Yagi structure to achieve directivity in the lower band, and the parallel rectangular patches serve as the parasitic director. These patches act as radiation patches with end-fire direction characteristics in the upper band. The measured bandwidths were 18.3% for the lower frequency band (2.28–2.74 GHz) and 12.6% for the upper frequency band (5.46–6.2 GHz).
Highlights
Owing to excellent characteristics including a low profile, simple structure, and low cost, printed end-fire antenna has been widely studied and used in many applications
A printed antenna [6] for dual-band operations of L1-band Global Navigation Satellite System (GNSS) and S-band China Mobile Multimedia Broadcasting (CMMB) was realized by using a meandered driven dipole and a concave parabolic reflector, and an analogous dual-band quasi-Yagi Wi-Fi antenna was proposed in [7]. Another method was used for a proposed dual-band quasiYagi antenna [8] based on application of split ring resonators (SRRs) to provide dual-mode, but this device had a narrow bandwidth due to the limited transmission structure
Most studies of double-sided parallel-strip line (DSPSL) focused on the microwave circuit design, such as the ultrawide band balun and the low-pass filter [9, 10]
Summary
Owing to excellent characteristics including a low profile, simple structure, and low cost, printed end-fire antenna has been widely studied and used in many applications. A printed antenna [6] for dual-band operations of L1-band Global Navigation Satellite System (GNSS) and S-band China Mobile Multimedia Broadcasting (CMMB) was realized by using a meandered driven dipole and a concave parabolic reflector, and an analogous dual-band quasi-Yagi Wi-Fi antenna was proposed in [7]. Another method was used for a proposed dual-band quasiYagi antenna [8] based on application of split ring resonators (SRRs) to provide dual-mode, but this device had a narrow bandwidth due to the limited transmission structure. The lower band (2.28–2.74 GHz) is centred at 2.4 GHz and its upper band (5.46–6.2 GHz) is centred at 5.8 GHz
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