A wide-band smooth-walled feedhorn with low cross polarization for millimeter astronomy

2010 ◽  
Author(s):  
Lingzhen Zeng ◽  
Charles L. Bennett ◽  
David T. Chuss ◽  
Edward J. Wollack
Keyword(s):  
Wide Band ◽  
Cross Polarization ◽  
Millimeter Astronomy

Stacked shorted microstrip antenna for low cross polarization and wide-band

2001 ◽  
Vol 30 (2) ◽  
pp. 73-75 ◽  
Author(s):  
J. S. Baligar ◽  
U. K. Revankar ◽  
K. V. Acharya
Keyword(s):  
Microstrip Antenna ◽  
Wide Band ◽  
Cross Polarization

scholarly journals WIDE-BAND PATCH ANTENNA ARRAY WITH LOW CROSS-POLARIZATION CHARACTERISTICS

2017 ◽  
Vol 71 ◽  
pp. 23-28
Author(s):  
Feibiao Dong ◽  
Limei Xu ◽  
Xue-Sheng Li ◽  
Min Chen ◽  
Xiao-Mei Xie
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
Wide Band ◽  
Cross Polarization ◽  
Polarization Characteristics

Gain Improvement and Bandwidth Extension of Ultra-Wide Band Micro-Strip Patch Antenna Using Electromagnetic Band Gap Slots and Superstrate Techniques

2020 ◽  
Vol 17 (2) ◽  
pp. 985-989
Author(s):  
Ahmed Jamal Abdullah Al-Gburi ◽  
I. M. Ibrahim ◽  
Z. Zakaria ◽  
Aymen Dheyaa Khaleel
Keyword(s):  
Patch Antenna ◽  
Wide Band ◽  
The Other ◽  
Ultra Wide Band ◽  
Impedance Bandwidth ◽  
Cross Polarization ◽  
Bandwidth Extension ◽  
Electromagnetic Band Gap ◽  
Mobile Cellular ◽  
Achievement Gain

In this article, the ultrawideband of micro-strip patch antenna is proposed bandwidth and gain were enhanced. The techniques that using to improve the gain and bandwidth are EBG slots and superstrate. The designed structure is implemented using computer simulation technology software (CST). The achievement gain of antenna is increased by 26.4% on 10.5 GHz of frequency. While the bandwidth of the proposed antenna is increased to 161%, the range from 2.67 to 26 GHz. This range of frequency is cover UWB, GPS, 5G mobile cellular, LTE, WLAN 802.11b/g UMTS2000, WiMAX, PCS1900, TD-SCDMA and Bluetooth applications. On the other hand, the ability of the superstrate allows to smaller leverage on the cross polarization accomplishment of an antenna slots. The compares between impedance bandwidth and gain by way of like the radiation patterns are debated at competence of benefit. Finally, there are perfect harmony between simulated and fabricated results.

scholarly journals A Compact Wide-Band Hybrid Dielectric Resonator Antenna with Enhanced Gain and Low Cross-Polarization

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Feibiao Dong ◽  
Limei Xu ◽  
Wenbin Lin ◽  
Tianhong Zhang
Keyword(s):  
Frequency Band ◽  
Dielectric Resonator ◽  
Return Loss ◽  
Wide Band ◽  
High Gain ◽  
Hybrid Design ◽  
Cross Polarization ◽  
Dielectric Resonator Antenna ◽  
Small Base ◽  
Air Layers

By loading two printed patches to the dielectric resonator antenna (DRA), a compact wide-band hybrid dielectric resonator antenna with enhanced gain and low cross-polarization is presented. The proposed antenna utilizes a combination of a rectangular dielectric resonator and two printed patches. Due to the hybrid design, multiple resonances were obtained. By adding two air layers between the dielectric resonator and the printed patches, the bandwidth has been significantly improved. Compared to the traditional hybrid dielectric resonator antenna, the proposed antenna can achieve wide bandwidth, high gain, low cross-polarization, and even small size simultaneously. The prototype of the proposed antenna has been fabricated and tested. The measured −10 dB return loss bandwidth is 25.6% (1.7–2.2 GHz). The measured antenna gains are about 6.3 and 8.2 dBi in the operating frequency band. Low cross-polarization levels of less than −28.5 dB and −43 dB in the E-plane and H-plane are achieved. Moreover, the overall dimensions of the antenna are only 67 × 67 × 34 (mm3). The proposed antenna is especially attractive for small base antenna applications.

scholarly journals A Novel Wideband Magneto-Electric Dipole Antenna with Improved Feeding Structure

2016 ◽  
Vol 5 (2) ◽  
pp. 10
Author(s):  
N. Marwah ◽  
G. P. Pandey ◽  
V. T. ◽  
S. S. Marwah
Keyword(s):  
Radiation Pattern ◽  
Electric Dipole ◽  
Wide Band ◽  
Dipole Antenna ◽  
Ultra Wide Band ◽  
Impedance Bandwidth ◽  
Cross Polarization ◽  
Radiation Patterns ◽  
Feeding Structure

A novel feeding structure in magneto-electric dipole antenna is proposed and analyzed, which is simpler and better in performance than previous designs, involving differential feeding.  Due to this improved feeding structure, the antenna has achieved an impedance bandwidth of 133.3% ( 0.5 GHz – 2.5 GHz, resulting into an ultra-wide band antenna. The maximum broadside gain 7.5dBi with unidirectional radiation pattern has also been reported for the entire the range of operation. Symmetry in E-plane and H-plane radiation patterns has been observed due to the symmetry in structure and excitation of antenna. The antenna has also been able to achieve cross polarization levels.

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