Wideband Gap Coupled Microstrip Antenna with Defected Ground Plane

2015 ◽  
Author(s):  
Vivekanand Sharma ◽  
Pramendra Kumar Verma ◽  
Raj Kumar
Keyword(s):  
Microstrip Antenna ◽  
Ground Plane ◽  
Wideband Gap ◽  
Defected Ground Plane

scholarly journals MICS/ISM Meander-Line Microstrip Antenna Encapsulated in Oblong-Shaped Pod for Gastrointestinal Tract Diagnosis

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3897
Author(s):  
Supakit Kawdungta ◽  
Akkarat Boonpoonga ◽  
Chuwong Phongcharoenpanich
Keyword(s):  
Gastrointestinal Tract ◽  
Microstrip Antenna ◽  
Ground Plane ◽  
Liquid Mixtures ◽  
Dielectric Constants ◽  
Antenna Structure ◽  
Antenna Miniaturization ◽  
Measured Impedance ◽  
Meander Line ◽  
Defected Ground Plane

In light of the growth in demand for multiband antennas for medical applications, this research proposes a MICS/ISM meander-line microstrip antenna encapsulated in an oblong-shaped pod for use in diagnoses of the gastrointestinal tract. The proposed antenna is operable in the Medical Implant Communication System (MICS) and the Industrial, Scientific and Medical (ISM) bands. The antenna structure consists of a meander-line radiating patch, a flipped-L defected ground plane, and a loading resistor for antenna miniaturization. The MICS/ISM microstrip antenna encapsulated in an oblong-shaped pod was simulated in various lossy-material environments. In addition, the specific absorption rate (SAR) was calculated and compared against the IEEE C95.1 standard. For verification, an antenna prototype was fabricated and experiments carried out in equivalent liquid mixtures, the dielectric constants of which resembled human tissue. The measured impedance bandwidths (|S11| ≤ −10 dB) for the MICS and ISM bands were 398–407 MHz and 2.41–2.48 GHz. The measured antenna gains were −38 dBi and −13 dBi, with a quasi-omnidirectional radiation pattern. The measured SAR was substantially below the maximum safety limits. As a result, the described MICS/ISM microstrip antenna encapsulated in an oblong-shaped pod can be used for real-time gastrointestinal tract diagnosis. The novelty of this work lies in the use of a meander-line microstrip, flipped-L defected ground plane, and loading resistor to miniaturize the antenna and realize the MICS and ISM bands.

Bandwidth enhancement and cross-polarization suppression in ultrawideband microstrip antenna with defected ground plane

2014 ◽  
Vol 56 (9) ◽  
pp. 2141-2146 ◽  
Author(s):  
Mukesh Kumar Khandelwal ◽  
Binod Kumar Kanaujia ◽  
Santanu Dwari ◽  
Sachin Kumar ◽  
A. K. Gautam
Keyword(s):  
Microstrip Antenna ◽  
Ground Plane ◽  
Cross Polarization ◽  
Bandwidth Enhancement ◽  
Defected Ground Plane

scholarly journals MICROSTRIP ANTENNA WITH DEFECTED GROUND PLANE STRUCTURE AS A SENSOR FOR LANDMINES DETECTION

2008 ◽  
Vol 4 ◽  
pp. 27-39 ◽  
Author(s):  
Saber Helmy Zainud-Deen ◽  
Mosad El. Sayed Badr ◽  
Emad El-Deen ◽  
Kamal Hassan Awadalla ◽  
Hamdy A. Sharshar
Keyword(s):  
Microstrip Antenna ◽  
Ground Plane ◽  
Defected Ground Plane

Hexa-band pattern reconfigurable antenna with defected ground plane

2021 ◽  
pp. 1-15
Author(s):  
Ghanshyam Singh ◽  
Binod Kumar Kanaujia ◽  
Vijay Kumar Pandey ◽  
Deepak Gangwar ◽  
Sachin Kumar
Keyword(s):  
Ground Plane ◽  
Band Pattern ◽  
Reconfigurable Antenna ◽  
Defected Ground Plane
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