A frequency and pattern reconfigurable microstrip antenna using PIN diodes

2014 ◽  
Author(s):  
Wentao Li ◽  
Zhen Ren ◽  
Xiaowei Shi ◽  
Yongqiang Hei
Keyword(s):  
Microstrip Antenna ◽  
Pin Diodes

Reconfigurable circularly polarized capacitive coupled microstrip antenna

2016 ◽  
Vol 9 (4) ◽  
pp. 843-850 ◽  
Author(s):  
Dinesh Kumar Singh ◽  
Binod Kumar Kanaujia ◽  
Santanu Dwari ◽  
Ganga Prasad Pandey ◽  
Sandeep Kumar
Keyword(s):  
Circular Polarization ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
Dual Band ◽  
Single Frequency ◽  
Impedance Bandwidth ◽  
Pin Diode ◽  
Dual Frequency ◽  
Pin Diodes ◽  
Circularly Polarized

The design and measurement of reconfigurable circularly polarized capacitive fed microstrip antenna are presented. Small isosceles right angle triangular sections are removed from diagonally opposite corners for the generation of circular polarization (CP) of axial ratio bandwidth of 11.1%. Horizontal slits of different lengths are inserted at the edges of the truncated patch to provide the dual-band CP and by switching PIN diodes across the slits ON and OFF, reconfigurable circularly polarized antenna is realized. The antenna shows dual-band behavior with reconfigurable CP. In order to enhance the operation bandwidth of the antenna, an inclined slot was embedded on the patch along with PIN diodes across the horizontal slits. This proposed antenna gave an impedance bandwidth of 66.61% (ON state) ranging from 4.42 to 8.80 GHz and 68.42% (OFF state) ranging from 4.12 to 8.91 GHz and exhibits dual-frequency CP with PIN diode in OFF state and single-frequency CP with PIN diode in ON state with good axial ratio bandwidth. The axial ratio bandwidth of 4.42, 2.35, and 2.72% is obtained from the antenna. The antenna has a similar radiation pattern in all the three different CP bands and almost constant gain within the bands of CP operation.

scholarly journals A Reconfigurable WiMAX Antenna for Directional and Broadside Application

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
M. Jusoh ◽  
M. F. Jamlos ◽  
M. R. Kamarudin ◽  
T. Sabapathy
Keyword(s):  
Microstrip Antenna ◽  
Antenna Design ◽  
Strip Line ◽  
Unique Form ◽  
Copper Strip ◽  
Pin Diodes ◽  
Specific Location ◽  
Antenna Performance ◽  
Feeding Technique ◽  
Measurement Results

A novel reconfigurable compact patch array antenna for directional and broadside application is proposed. The presented antenna has successfully been able to function for directional beam at 320° or 35° and divisive broadside beam at 43° and 330°. This is realized in the unique form of aperture coupled spiral feeding technique and positioning of the radiating elements at 0°, 90,° and 180°. The switchable feature is effectively performed by the configuration of three PIN diodes. All PIN diodes are positioned at the specific location of the aperture coupled structure. It is discovered in simulation that the switches can be represented with a copper strip line or touchstone (TS) block . The proposed antenna design operates at 2.37 GHz to 2.41 GHz and has a maximum gain of 6.4 dB and efficiency of 85.97%. Such antenna produces a broadside HPBW with a wider bandwidth covering from −90° to 90° compared to the normal microstrip antenna which could only provide HPBW of −50° to 50°. Moreover, the proposed antenna has small physical dimension of 100 mm by 100 mm. The simulation and measurement results have successfully exhibited the idea of the presented antenna performance. Therefore, the antenna is sufficiently competent in the smart WiMAX antenna application.

A reconfigurable dual-frequency slot-loaded microstrip antenna controlled by pin diodes

2005 ◽  
Vol 44 (4) ◽  
pp. 374-376 ◽  
Author(s):  
Shynu S. V. ◽  
Gijo Augustin ◽  
C. K. Aanandan ◽  
P. Mohanan ◽  
K. Vasudevan
Keyword(s):  
Microstrip Antenna ◽  
Dual Frequency ◽  
Pin Diodes

scholarly journals A Multi-Polarization Reconfigurable Microstrip Antenna Using PIN Diodes

2013 ◽  
Vol 24 (5) ◽  
pp. 492-501 ◽  
Author(s):  
Taeho Song ◽  
Youngki Lee ◽  
Daesung Park ◽  
Seokgon Lee ◽  
Hyoungjoo Kim ◽  
...  
Keyword(s):  
Microstrip Antenna ◽  
Pin Diodes

A Polarization Reconfigurable Aperture-Coupled Microstrip Antenna and Its Binary Array for MIMO

Frequenz ◽  
2016 ◽  
Vol 70 (3-4) ◽  
Author(s):  
Lei Zhong ◽  
Jin-Song Hong ◽  
Hong-Cheng Zhou
Keyword(s):  
Microstrip Antenna ◽  
Communication Systems ◽  
High Gain ◽  
Wireless Communication Systems ◽  
Impedance Bandwidth ◽  
Polarization Diversity ◽  
Cross Polarization ◽  
Pin Diodes ◽  
Circular Patch Antenna ◽  
Binary Array

AbstractIn the paper, a singly fed circular patch antenna with polarization diversity is proposed, and its binary array for MIMO application is explored as well. The air substrate and aperture-coupled feed structure are adopted to increase bandwidth and simplify the bias circuit of PIN diodes. By controlling the states of four PIN diodes on the patch, the proposed antenna can produce linear polarization (LP), left- or right-hand circular polarization (LHCP or RHCP). For each polarization sense, the antenna exhibits wide impedance bandwidth, high gain and low cross-polarization. Two antennas are orthogonally placed to form a binary array for MIMO application, which has high isolation and low envelope correlation. The antenna and its array have advantages of simple biasing network, easy fabrication and adjustment, which can be widely applied in wireless communication systems.

New TTL Method Applied to Microstrip Antenna

2000 ◽  
Vol 54 (5-6) ◽  
pp. 95-113 ◽  
Author(s):  
Humberto Cesar Chaves Fernandes ◽  
Anthony R. N. Farias ◽  
Vyacheslav Vyacheslavovich Meriakri
Keyword(s):  
Microstrip Antenna ◽  
Ttl Method
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