Differential‐fed ultra‐wideband slot‐loaded patch antenna with dual orthogonal polarisation. Issue 25 (1st December 2013)

• Record Type: Journal Article
• Authors: Zhang, Kai; Zhu, Fuguo; Gao, Steven
• Is Part Of: Electronics letters. Volume 49:Issue 25(2013)
• Page Start: 1591
• Page End: 1593
• Publication Date: 2013-12-01
• Subjects: antenna feeds -- antenna radiation patterns -- electromagnetic wave polarisation -- microstrip antennas -- microstrip lines -- slot antennas -- ultra wideband antennas; differential‐fed ultrawideband slot‐loaded patch antenna -- dual orthogonal polarisation -- square ring patch -- inclined triangular‐shaped patches -- microstrip lines -- grounded FR4 substrate -- differential feed mechanism -- polarisation ports -- cross‐polarisation level -- identical tapered baluns -- gain 3 dB; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2013.2607
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : A novel dual‐polarised ultra‐wideband patch antenna is proposed. This antenna consists of a square ring patch and four inclined triangular‐shaped patches. The vertices of the triangular patches are connected to the microstrip lines which are printed on the bottom layer of the grounded FR4 substrate. To realise the differential feed mechanism for reducing the coupling between the two polarisation ports and the cross‐polarisation level, two identical tapered baluns are used to excite the antenna. The antenna prototype can provide two orthogonal polarisations with an impedance bandwidth (| S 11 | ≤ −10 dB) of 113.2% and isolation of over 28 dB across the whole operating frequency band. The measured antenna gain varies from 2.09 to 7.66 dBi for port 1 and from 0.02 to 6.77 dBi for port 2 with a 3 dB gain bandwidth of 96.3%.