Radiation pattern of microstrip antenna arrays on finite substrates

A novel high-performance circularly polarized (CP) antenna is proposed in this paper. Two separate antennas featuring the global positioning system (GPS) dual-band operation (1.575 GHz and 1.227 GHz for L1 band and L2 band, resp.) are integrated with good isolation. To enhance the gain at low angle, a new structure of patch and two parasitic metal elements are introduced. With the optimized design, good axial ratio and near-hemispherical radiation pattern are obtained.

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Modelling of mutual coupling in microstrip antenna arrays fed by microstrip line

15th International Conference on Microwaves, Radar and Wireless Communications (IEEE Cat. No.04EX824) ◽

10.1109/mikon.2004.1357079 ◽

2005 ◽

Cited By ~ 1

Author(s):

M. Kosowski ◽

W. Zieniutycz

Keyword(s):

Antenna Arrays ◽

Microstrip Antenna ◽

Mutual Coupling ◽

Microstrip Line

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Circularly-Polarized Focused Microstrip Antenna Arrays

IEEE Antennas and Wireless Propagation Letters ◽

10.1109/lawp.2015.2428931 ◽

2016 ◽

Vol 15 ◽

pp. 52-55 ◽

Cited By ~ 17

Author(s):

Yuhai Jiang ◽

Wen Geyi ◽

Lingsheng Yang ◽

Hucheng Sun

Keyword(s):

Antenna Arrays ◽

Microstrip Antenna ◽

Circularly Polarized

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Compact Design of Annular-Microstrip-Fed mmW Antenna Arrays

Sensors ◽

10.3390/s21113695 ◽

2021 ◽

Vol 21 (11) ◽

pp. 3695

Author(s):

Shu-Dong Lin ◽

Shi Pu ◽

Chen Wang ◽

Hai-Yang Ren

Keyword(s):

Antenna Arrays ◽

Microstrip Antenna ◽

Radiation Characteristic ◽

60 Ghz ◽

Outer Contour ◽

Linear Arrays ◽

Directional Radiation ◽

Microstrip Antenna Array ◽

Compact Design ◽

Compact Array

In this paper, a series of four novel microstrip antenna array designs based on different annular-microstrip feeding lines at 60-GHz millimeter wave (mmW) band are proposed, aiming at the potential usage of the mmW coverage antenna with multi-directional property. As the feeding network, the annular contour microstrip lines are employed to connect the patch units so as to form a more compact array. Our first design is to use an outer contour annular microstrip line to connect four-direction linear arrays composed of 1 × 3 rectangular patches, thus the gain of 8.4 dBi and bandwidth of over 300 MHz are obtained. Our second design is to apply the two-direction pitchfork-shaped array each made up of two same linear arrays as the above, therefore the gain of 9.65 dBi and bandwidth of around 250 MHz are achieved. Our third design is to employ dual (inner and outer contour) annular-microstrip feeding lines to interconnect the above four-direction linear arrays, while our fourth design is to bring bridged annular-microstrip feeding lines, both of which can realize the goal of multi-directional radiation characteristic and higher gain of over 10 dBi.

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A Circular Disc Microstrip Antenna with Dual Notch Band for GSM/Bluetooth and Extended UWB Applications

International Journal of Engineering & Technology ◽

10.14419/ijet.v7i2.16.11408 ◽

2018 ◽

Vol 7 (2.16) ◽

pp. 11

Author(s):

Sanjeev Kumar ◽

Ravi Kumar ◽

Rajesh Kumar Vishwakarma

Keyword(s):

Radiation Pattern ◽

Microstrip Antenna ◽

Ground Plane ◽

Circular Disc ◽

Ultra Wideband ◽

Resonant Circuit ◽

Frequency Range ◽

Notch Band ◽

Uwb Applications ◽

Ku Band

A microstrip antenna with a circular disc design and modified ground is proposed in this paper. Circular shapes of different size have been slotted out from the radiating patch for achieving extended ultra wideband (UWB) with GSM/Bluetooth bands with maximum bandwidth of 17.7 GHz (0.88-18.6 GHz). Further, characteristic of dual notch band is achieved, when a combination of T and L-shaped slots are etched into the circular disc and ground plane respectively. Change in length of slots is controlling the notch band characteristics. The proposed antenna has rejection bandwidth of 1.3-2.2 GHz (LTE band), 3.2-3.9 GHz (WiMAX band) and 5.2-6.1 GHz (WLAN band) respectively. It covers the frequency range of 0.88-18.5 GHz with the VSWR of less than 2. Also, an equivalent parallel resonant circuit has been demonstrated for band notched frequencies of the designed antenna. The gain achieved by the proposed antenna is 6.27 dBi. This antenna has been designed, investigated and fabricated for GSM, Bluetooth, UWB, X and Ku band applications. The stable gain including H & E-plane radiation pattern with good directivity and omnidirectional behavior is achieved by the proposed antenna. Measured bandwidths are 0.5 GHz, 0.8 GHz, 1.1 GHz and 11.7 GHz respectively.

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