Compact and wideband millimetre wave circularly polarised antenna array based on a SICL to waveguide transition

2017 ◽  
Vol 11 (14) ◽  
pp. 2097-2103 ◽  
Author(s):  
Li Cheng ◽  
Kui‐Kui Fan ◽  
Zhang‐Cheng Hao ◽  
Wei Hong
Keyword(s):  
Antenna Array ◽  
Millimetre Wave ◽  
Waveguide Transition

scholarly journals Super-Wide Impedance Bandwidth Planar Antenna Based on Metamaterial Concept for Microwave and Millimetre-Wave Applications

2019 ◽  
Author(s):  
Mohammad Alibakhshikenari ◽  
Bal S. Singh ◽  
Chan H. See ◽  
Raed A. Abd-Alhameed ◽  
Francisco Falcone ◽  
...  
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
Ultra Wideband ◽  
Impedance Match ◽  
Impedance Bandwidth ◽  
Planar Antenna ◽  
Millimetre Wave ◽  
Array Configuration ◽  
Microstrip Patch ◽  
Four Square

A novel configuration for a super-wide impedance planar antenna is presented based on a 2 × 2 microstrip patch antenna (MPA). The antenna comprises a symmetrical arrangement of four-square patches that are interconnected to each other with cross-shaped high impedance microstrip lines. The antenna array is exciting through a single feedline connected to one of the patches. The proposed antenna array configuration overcomes the main drawback of conventional MPA of narrow bandwidth that is typically <5%. The antenna exhibits a super-wide frequency bandwidth from 20 GHz to 120 GHz for S11<−15 dB, which corresponds to a fractional bandwidth of 142.85%. The antenna’s performance of bandwidth, impedance match, and radiation gain were enhanced by etching slots on the patches. The slotted microstrip patch essentially acts like a left-handed capacitance to exhibit metamaterial properties over a given frequency range. With the inclusion of the slot the maximum radiation gain and efficiency of the MPA have increased to 15.11 dBi and 85.79% at 80 GHz, which show an improvement of 2.58 dBi and 12.54%, respectively. The dimension of each patch antenna is 30 × 30 mm2. The results show that the proposed MPA is useful for various communications existing and emerging systems such as ultra-wideband (UWB) communications, RFID systems, massive multiple-output multiple-input (MIMO) for 5G, and radar systems.

E ‐plane probe microstrip to waveguide transition with fin‐line back‐short structure for millimetre‐wave application

2017 ◽  
Vol 53 (23) ◽  
pp. 1532-1534
Author(s):  
Zhengbin Xu ◽  
Jie Xu ◽  
Yinjie Cui ◽  
Jian Juo ◽  
Cheng Qian
Keyword(s):  
Millimetre Wave ◽  
Waveguide Transition ◽  
Fin Line ◽  
Plane Probe
Sign in / Sign up

Export Citation Format

Share Document