scholarly journals Compact single‐varactor diode frequency‐reconfigurable microstrip patch antenna

2021 ◽  
Author(s):  
Mahmoud Al Ahmad ◽  
Saifudeen Kabeer ◽  
Ala Abu Sanad ◽  
Lillian J. A. Olule
Keyword(s):  
Patch Antenna ◽  
Microstrip Patch Antenna ◽  
Varactor Diode ◽  
Microstrip Patch

A Frequency and Polarization Reconfigurable Dual-Patch Microstrip A Frequency and Polarization Reconfigurable Dual-Patch Microstrip

2021 ◽  
Vol 36 (2) ◽  
pp. 152-158
Author(s):  
Cong Bui ◽  
Thanh Dang ◽  
Minh Doan ◽  
Truong Nguyen
Keyword(s):  
Patch Antenna ◽  
Microstrip Patch Antenna ◽  
Antenna Design ◽  
Reconfigurable Antenna ◽  
Pin Diode ◽  
Varactor Diode ◽  
Ism Band ◽  
Microstrip Patch ◽  
Antenna Performance ◽  
Good Agreement

This paper proposes a reconfigurable microstrip patch antenna design for wireless ISM band applications. The antenna simultaneously uses PIN Diodes to switch between linear and circular polarization at 2.45 GHz and uses Varactor Diode to continuously tune the operating frequency from 1.73 GHz to 2.45 GHz. The antenna performance is characterized as a combination of ON/OFF state of PIN Diode and a bias voltage of Varactor Diode varying from 0.8V to 10V. A good agreement between simulation and measurement is obtained which validates the proposed method. The proposed frequency/polarization reconfigurable antenna is promising for various applications in wireless ISM band such as DCS (1710 – 1880 MHz), PCS (1850 – 1990 MHz), GSM 1800, GSM 1900, UMTS (1920 – 2170 MHz) and WiFi/Bluetooth (2.4 – 2.5 GHz).

scholarly journals Frequency tuning varactor-loaded reconfigurable antenna for m-WiMAX and WLAN applications

2019 ◽  
Vol 13 (2) ◽  
pp. 779
Author(s):  
S. M. Shah ◽  
K. Hamdan ◽  
Z. Z. Abidin ◽  
F. C. Seman ◽  
S. A. Hamzah ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Frequency Tuning ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Reconfigurable Antenna ◽  
Resonant Frequencies ◽  
Varactor Diode ◽  
Microstrip Patch ◽  
Tunable Device ◽  
Tan Δ

A design approach for a microstrip patch antenna to achieve the reconfigurable dual-band operation with a tunable device is presented in this work. The approach uses a BB833 varactor diode in the middle of a slotted patch antenna which which is able to produce dual-band resonant frequencies. The reconfigurable antenna is designed and simulated in CST Microwave Studio® software and is later, fabricated on a FR-4 substrate with a dielectric constant,  of 4.5, loss tangent, tan δ of 0.019 and thickness, h of 1.6 mm. By changing the DC voltages of the varactor diode, different capacitance values of the varactor diode are obtained which dictate the specific resonant frequencies. From the simulation results, the capacitance value of 0.5 pF with a bias voltage of 2.0 V is chosen as it produces the required dual-band resonant frequencies at 3.38 GHz and 5.37 GHz for desired applications in the m-WiMAX and WLAN bands.

Metamaterial Structure with Negative μ and ε for reduction of return loss of Microstrip Patch Antenna

2012 ◽  
Vol 2 (8) ◽  
pp. 130-133
Author(s):  
Amandeep Singh Amandeep Singh ◽  
◽  
Sankul Agarwal ◽  
Vaibhav Sharma ◽  
Shivam Pandita
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Metamaterial Structure ◽  
Microstrip Patch

Frequency reconfigurable microstrip patch antenna

2014 ◽  
Author(s):  
Liping Han ◽  
Luting Guo ◽  
Runbo Ma ◽  
Wenmei Zhang
Keyword(s):  
Patch Antenna ◽  
Microstrip Patch Antenna ◽  
Microstrip Patch
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