NO.
AUTHOR TITLE CONTRIBUTION/ PERFORMANCE MATRICS ADVANTAGE DISADVANTAGE
OUTPUT (BEFORE IMPLEMENT A
NEW SYSTEM)
1. Duong Thi Thanh Tu Compact MIMO Antenna Enlarged bandwidth for 2 Rectangular DGS structure Antenna size DGS in the ground with
Nguyen Vam Hoc with low Mutual Coupling MIMO antenna. located in ground antenna decreased with the use coaxial feeding has some
Using Defected Ground with horizontal direction. of DGS. troubled when fabricated,
Structure Compact size antenna. because of the position of
the coaxial line feeding
2016 Low mutual coupling point is so close to the
between two antenna position of DGS serial slot.
elements in close distance.
2. Guorui Han A Novel MIMO Antenna with Isolation improvement by MIMO of 2 port octangular Surface wave coupling Mutual coupling between
Liping Han DGS for High Isolation. 10dB. patch antenna and a 2 port between elements identically polarized
Runbo Ma square ring antenna with 12 reduced, with all elements is high.
Qingsheng Zeng 2016 Mutual coupling values as slots DGS on ground coupling values of the
Wenmei Zhang low as -23.6 dB are structure. antenna are below -
obtained. 23.6 dB and correlation
coefficient between
different ports are
below 0.1 at the
operating band.
3. Rupak Kumar Gupta Dual C-slotted Microstrip Proposed GDS improved the C shaped and a rectangular DGS improved antenna Separation between
Dr. T. Patch MIMO Antenna for return loss characteristics. shaped introduced on parameters compared patches with compact
Shanmuganantham Multiband Wireless radiator patch on MIMO to the one without sizes antenna is difficult.
R. Kiruthika Applications antenna. DGS.
2017
4. R. A. Pandhare Beam-steering in microstrip The designed DGS streered Dumbbell shape DGS with Designed antenna The mainlobe direction
P. L. Zade patch antenna array using mainlobe within the region various sizes simulated on array with DGS work as changed from region 0⁰ to
M. P. Abegaonkar DGS based phase shifters at 0⁰ to 15⁰. microstrip patch antenna a phase shifter without 15⁰ only.
5.2 GHz under the feed lines. any effect on
resonance frequency
2015 (5.2Ghz).
NO. AUTHOR TITLE CONTRIBUTION/ PERFORMANCE MATRICS ADVANTAGE DISADVANTAGE
OUTPUT (BEFORE IMPLEMENT A
NEW SYSTEM)
5. Manisha Dhiman, Effect of DGS technique in MIMO with modified DGS is Double E shaped DGS and Antenna parameters in A few parameters are not
Sonia Saini, MIMO antenna. better than MIMO with DGS modified double S shaped MIMO antenna; return improving by using MIMO
Dimpy Ahuja and MIMO without DGS. DGS are etched in the loss, gain, directivity with double E shaped DGS.
2015 ground plane. antenna efficiency,
radiation efficiency,
improved.
6. Debatosh Guha, Printed Antenna Designs A review and history of DGS No actual methods were Full and complete The disadvantages were
Sujoy Biswas, using Defected Ground designs and performed, except that it review of 79 papers. not discussed in the paper.
Chandrakanta Kumar Structures: A Review of implementations in was reviewed by various
Fundamentals and State-of- microwave technology from resources. Various designs
the-Art Developments. 2005 until recent (2014). available.
2014
7. A. M. M. A Allam, Novel DGS Shape for Mutual DGS enhanced the Configuration is Minimize mutual The antenna gain, pattern
Adham Mohamed Coupling Reduction. scattering parameters of implemented on Rogers coupling between and current density are
Gamal Hemdan MIMO antenna. RO4350 substrate. Antenna antennas. unaffected by the
2016 in trapezoidal shapes. Non- implementation of DGS.
Mutual coupling periodic DGS structure are Designs are fabricated
phenomena is reduced in added to the ground of and produced a similar Design of the DGS are non-
MIMO antenna. MIMO. results between periodic and tricky.
simulations and
measured.
**This paper clearly
explain details and
meaning of microwave
jargon.
NO. AUTHOR TITLE CONTRIBUTION/ PERFORMANCE MATRICS ADVANTAGE DISADVANTAGE
OUTPUT (BEFORE IMPLEMENT A
NEW SYSTEM)
8. R. Anitha, Enhanced Isolation with Isolation improvement by 7 A square patch antenna Isolation improvement A few coupling value has
V. P. Sarin Defected Ground Structure dB achieved. surrounded by a square ring and impedance no significant change even
P. Mohanan in MIMO Antenna patch antenna with the DGS bandwidth are higher after DGS is introduced.
K. Vasudevan Mutual coupling as low as - etched in the form of a compared to
25 dB obtained along the E- square ring. conventional design.
and H-planes.
DGS are easy to
fabricate with no
intricate process
involved.
9. Mrinmoy Multiple Saw Tooth Shaped Antenna performance 2 shaped DGS structures 3 application with Length for both DGS
Chakraborty, DGS Integrated Compact improved with DGS. designed along with circular specific frequency affects the application
Srijita Chakraborty, Circular Patch Antenna for microstrip antenna on bands are functioning band and it has to be
P Soni Reddy, 2.4/5.2/5.8 Ghz WLAN Band Patch area reduced by 84%. Zeland IE3D software. simultaneously with simulated to achieve
Susamay Samanta the proposed favourable solution for all
2016 structure. the bands.
