scholarly journals Inverted dual U slot loaded truncated microstrip patch antenna for wireless applications

2018 ◽  
Vol 7 (2.21) ◽  
pp. 151
Author(s):  
Kavitha Thandapani ◽  
Shiyamala Subramani
Keyword(s):  
Dielectric Constant ◽  
Resonant Frequency ◽  
Loss Tangent ◽  
Patch Antenna ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Dielectric Constant And Loss ◽  
Circular Patch Antenna

Dual U Slot Loaded Truncated Microstrip Patch Antenna is designed for wireless applications. The proposed geometry comprised of two inverted U slots in truncated circular patch antenna operation covering 2.24 to 2.72 GHZ frequency bands are obtained. It is found that the slot and truncated is used to improve the bandwidth and return loss respectively. The resonant frequency is found to be 2.5GHZ. The bandwidth of the proposed antenna for lower and upper resonant frequency is found to be 19.2%. The proposed antenna is fed by 50Ω co-axial probe feed and simulated on Rogers RT/duroid5880 substrate.  Rogers RT/duroid 5880 substrate has dielectric constant and loss tangent of 2.2 and 0.0009 respectively. An air gap is used in this proposed design for tuning the desired frequencies and increasing the bandwidth. The antenna shows an acceptable gain of 2.1dB to 5.7dB with unidirectional pattern over the obtained frequency band. 

scholarly journals DESIGN AND ANALYSIS OF A MICROSTRIP PATCH ANTENNA AT 7.5 GHz FOR X-BAND VSAT APPLICATION

2022 ◽  
Vol 23 (1) ◽  
pp. 60-67
Author(s):  
Sarah Yasmin Mohamad ◽  
Noralya Fatin Muzamil ◽  
Norun Farihah Abdul Malek ◽  
S.M.A Motakabber ◽  
Rafidah Abd Malik ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Loss Tangent ◽  
Patch Antenna ◽  
High Frequency ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Reflector Antennas ◽  
Band Frequency ◽  
Microstrip Patch ◽  
X Band

In this paper, a microstrip patch antenna is designed to be used for X-band VSAT application at 7.5 GHz. The antenna is proposed to replace the massive and commonly used parabolic reflector antennas (46.0 inch × 29.3 inch × 13.5 inch (116.84 cm × 74.42 cm × 34.29 cm) with weight of 66.2 kg) in terms of portability due to its compact and lightweight features, with overall dimensions of 19.00 mm × 30.55 mm. The 7.5 GHz frequency is chosen based on the X-band frequency used in Malaysia, as reported by STRIDE. The microstrip patch antenna is first designed and simulated using CST Microwave Studio (CST MWS) and exhibits a good return loss (S11) of -42.09 dB, a bandwidth of 399 MHz, directivity of 7.63 dB and gain of 7.18 dB. The antenna is then fabricated using RT/duroid ® High Frequency 5880 substrate with a dielectric constant of ?r = 2.2, loss tangent of ? = 0.0009 and thickness of t = 1.574 mm. Next, the return loss and radiation pattern measurements are carried out to confirm the simulated results. The measurement of the antenna prototype provides a return loss S11 of -30.53 dB, bandwidth of 455 MHz, directivity of 5.51 dB and gain of 3.88 dB. ABSTRAK: Di dalam kajian ini, antena jalurmikro dicadangkan untuk tujuan aplikasi jalur-X VSAT pada 7.5 GHz. Antena jalurmikro ini dicadangkan untuk menggantikan antena reflektor parabola yang besar dan biasa digunakan (46.0 inci × 29.3 inci × 13.5 inci (116.84cm × 74.42cm × 34.29cm) dengan berat 66.2kg), kerana cirinya yang mudah alih dengan fizikalnya yang kecil dan ringan, dan dimensi keseluruhan 19.00 mm × 30.55 mm. Frekuensi 7.5 GHz dipilih berdasarkan frekuensi jalur-X yang digunakan di Malaysia, seperti yang dilaporkan oleh STRIDE. Antena jalurmikro ini direka dan disimulasi menggunakan perisian CST Studio Gelombang Mikro (CST MWS) dan menghasilkan kehilangan pulangan yang baik S11 -42.09 dB, lebar jalur 399 MHz, keterarahan 7.63 dB dan gandaan 7.18 dB. Antena jalurmikro ini kemudiannya direalisasikan dengan menggunakan substrat RT / duroid ® Frekuensi Tinggi 5880 dengan pemalar dielektrik ?r = 2.2, tangen kehilangan ? = 0.0009 dan ketebalan t = 1.574 mm. Seterusnya, pengukuran kehilangan pulangan dan corak radiasi dilakukan untuk mengesahkan keputusan simulasi. Pengukuran prototaip antena jalurmikro menunjukkan kehilangan pulangan S11 -30.53 dB, lebar jalur 455 MHz, keterarahan 5.51 dB dan gandaan 3.88 dB.

UWB RECTANGULAR SLOTTED MICROSTRIP PATCH ANTENNA IN PROXIMITY OF HUMAN ARM MODEL

2016 ◽  
Vol 78 (5-4) ◽  
Author(s):  
Muhammad Syafiq Noor Azizi ◽  
Azahari Salleh ◽  
Adib Othman ◽  
Najmiah Radiah Mohamad ◽  
Nor Azlan Aris ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Patch Antenna ◽  
Free Space ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Ultra Wideband ◽  
Uwb Antenna ◽  
Study Behavior ◽  
Microstrip Patch ◽  
Human Arm

In this paper, we study behavior of Ultra wideband antenna which is Rectangular Slotted Microstrip Patch Antenna. Then, the antenna operated in proximity of human arm model. Furthermore, the antenna is designed on a FR-4 substrate with dielectric constant of 4.3 and thickness 1.6 mm. This antenna simulated in CST Microwave Studio software. In order to test the antenna, an arm model was numerically modelled. The study shows properties and performances of antenna when it is placed in three situations which in free space, outside and inside of human arm model. The properties of UWB antenna in term of return loss, gain, directivity and radiation pattern in the three situations is simulated and discussed.

Dual-Band Proximity Coupled Feed Microstrip Patch Antenna with ‘T’ Slot on the Radiating Patch and ‘Dumbbell’ Shaped Defected Ground Structure

2016 ◽  
Vol 3 (2) ◽  
pp. 435 ◽  
Author(s):  
Dawit Fitsum ◽  
Dilip Mali ◽  
Mohammed Ismail
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna

<p>This paper presents Dual-Band proximity coupled feed rectangular Microstrip patch antenna with slots on the radiating patch and Defected Ground Structure. Initially a simple proximity coupled feed rectangular Microstrip patch antenna resonating at 2.4 GHz is designed. Etching out a ‘Dumbbell’ shaped defect from the ground plane and ‘T’ shaped slot from the radiating patch of the proximity coupled feed rectangular Microstrip patch antenna, results in a Dual-Band operation, i.e., resonating at 2.4 GHz and 4.5 GHz; with 30.3 % and 18.8% reduction in the overall area of the patch and the ground plane of the reference antenna respectively. The proposed antenna resonates in S-band at frequency of 2.4 GHz with bandwidth of 123.6 MHz and C-band at frequency of 4.5 GHz with bandwidth of 200 MHz, and a very good return loss of -22.1818 dB and -19.0839 dB at resonant frequency of 2.4 GHz and 4.5 GHz respectively is obtained. The proposed antenna is useful for different wireless applications in the S-band and C-band.</p>

scholarly journals Reconfiguration of Circular Microstrip Patch Antenna for Wireless Applications

2018 ◽  
Vol 7 (3.6) ◽  
pp. 348
Author(s):  
J Premalatha ◽  
D Sheela ◽  
M Abinaya
Keyword(s):  
Patch Antenna ◽  
Axial Ratio ◽  
Dielectric Substrate ◽  
Reconfigurable Antennas ◽  
Microstrip Patch Antenna ◽  
Pin Diode ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Ansoft Hfss ◽  
Circular Patch Antenna

Reconfigurable antennas provide a possible solution to solve the related problems using the ability to switch frequency, patterns and polarization. This paper represents a possible application in wireless communication using reconfigurable Microstrip patch antenna. The dielectric substrate of proposed circular Microstrip patch antenna is fabricated with FR 4 epoxy and patch design 40x40x1.6mm. This work provides a methodology to design reconfigurable antennas with PIN diode switch. The frequency reconfiguration achieved by PIN diodes At the range of 3 GHZ to 6.9 GHZ the frequency reconfigurability  is realized. To resonate the antenna at various frequencies PIN diode is used. Simulation of Ansoft HFSS software is used to compute the gain, axial ratio, radiation pattern, and return loss of proposed antenna. The structure of circular patch antenna achieves an enhanced wide bandwidth. The results show a better frequency reconfiguration.  

scholarly journals Design of Inset Feed Rectangular Microstrip Patch Antenna with Different Dielectric Substrates

2020 ◽  
Vol 9 (5) ◽  
pp. 1846-1851
Keyword(s):  
Dielectric Constant ◽  
Mobile Communications ◽  
Patch Antenna ◽  
High Speed ◽  
Return Loss ◽  
Satellite Communications ◽  
Microstrip Patch Antenna ◽  
Microwave Antenna ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna

Microstrip antennas find wide applications in high-speed vehicles, and missiles, tanks, satellite communications, mobile communications and wireless communications etc. The main advantage of these antennas over conventional microwave antenna is light weight, low volume, low cost, planar structure and compatibility with integrated circuits. The present paper deals with the design and simulation of an inset feed rectangular microstrip patch antenna using different dielectric substrate materials such as Arlon AD320, FR4 (Epoxy glass) and Vaccum (Air) and having dielectric constant ( )= 3.2, 4.4 and 1.0 respectively and also comparing their performance characteristics. The resonant frequency of the proposed antenna is designed at frequency of 1.9 GHz, which is lying in the L-band region. The antenna software such as High Frequency Structure Simulator is used for designing of proposed antenna. The simulation results shows the maximum bandwidth is 40MHz and minimum gain is 2dB is obtained using FR4 (Epoxy-glass) substrate whose dielectric constant ( ) = 4.4, at which return loss is -35.67dB. Maximum gain is 9.72dB and bandwidth is 39MHz obtained using Vaccum (Air), whose dielectric constant ( ) = 1.0. However, 6 dB gain and 25MHz bandwidth is obtained using Arlon AD 320A substrate, whose dielectric constant ( ) = 2.2 at which return loss is obtained -24.57dB. The proposed antenna can be used for military telemetry, GPS, mobile phone (GSM) and amateur radio applications.

scholarly journals A Study on Dual-band Microstrip Rectangular Patch Antenna for Wi-Fi

2020 ◽  
Vol 16 ◽  
pp. 01-12
Author(s):  
Rabnawaz Sarmad Uqaili ◽  
Junaid Ahmed Uqaili ◽  
Sidrish Zahra ◽  
Faraz Bashir Soomro ◽  
Ali Akbar
Keyword(s):  
Dielectric Constant ◽  
Patch Antenna ◽  
Patch Size ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Microstrip Patch ◽  
Rectangular Patch ◽  
802.11 Wlan

This paper presents the design of a dual-band microstrip patch antenna for Wi-Fi that operates at 2.5 GHz and 5.8 GHz. The antenna contains a rectangular patch with two rectangular slots. The first slot is incorporated in the patch while the second slot is incorporated in the ground plane. The antenna is based on a microstrip fed rectangular patch printed on the FR-4 epoxy substrate with a dielectric constant of 4.4 and a thickness of 1.6 mm with patch size 24 mm × 21 mm. The simulated result shows that the realized antenna successfully works on dual-band and subsequently achieves a bandwidth of 100 MHz and 200 MHz as well as the return loss about -29.9 dB and -15.16 dB for 2.5 GHz and 5.8 GHz respectively. A stable omnidirectional radiation pattern is observed in the operating frequency bands. The antenna meets the required specifications for 802.11 WLAN standards.

scholarly journals E SHAPE MICROSTRIP PATCH ANTENNA WITH RECTANGULAR AND CIRCULAR SLOT

2020 ◽  
Vol 5 (2) ◽  
pp. 188-193 ◽  
Author(s):  
Priyanka Jain ◽  
Raghavendra Sharma ◽  
Vandana Vikas Thakre
Keyword(s):  
Loss Tangent ◽  
Patch Antenna ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Simulation Software ◽  
Antenna Design ◽  
Microstrip Patch ◽  
Rectangular Patch

In this proposed design a Rectangular E shaped micro-strip patch antenna is present with rectangular and circular slot within the Rectangular patch which operate at frequency 2.4 GHz. By proposed antenna design and coaxial feeding at suitable place  the resultant return loss, VSWR and bandwidth will be find out. For the propose microstrip antenna we have use FR-4 substrate which contain permittivity of 4.4 and thickness 1.5, loss tangent is 0.02. HFSS simulation software is used for designing and analysis.

scholarly journals The Improved Radiations in Planar Microstrip Patch Antenna using Linear Slot Etched Ground Plane

2020 ◽  
Vol 8 (6) ◽  
pp. 123-127
Keyword(s):  
Dielectric Constant ◽  
Resonant Frequency ◽  
Patch Antenna ◽  
Ground Plane ◽  
Dominant Mode ◽  
Microstrip Patch Antenna ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna ◽  
Simulation Results ◽  
Good Agreement

Radiations improvement in a probe fed rectangular microstrip patch antenna using linear slot etched ground plane is proposed. Conventional MPA is designed using Glass Epoxy FR4 substrate. Substrate has dielectric constant 4.4 and its thickness 1.6 mm, operated at resonant frequency 3.05 GHz. The proposed method is simple and easy to etch on a substrate. This will suppress cross-polarized (XP) radiation field only without disturbing the dominant mode and co-polarized radiations. The concept has been tested using HFSS tool and verified its results experimentally. The experimental results show a good agreement with the simulation results.

scholarly journals Trapezoidal Microstrip Patch Antenna Array for Low Frequency Medical Applications

2021 ◽  
Author(s):  
Suganthi Santhanam ◽  
Thiruvalar Selvan Palavesam
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
Return Loss ◽  
Low Frequency ◽  
Surface Current ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Medical Applications ◽  
Wireless Applications ◽  
Microstrip Patch

Abstract This paper presents the design of flexible trapezoidal radiating patch antenna array with FR4 substrate for onbody low frequency medical applications. The array resonates at 1.89 GHz with impedance bandwidth of 80 MHz and low return loss of -26.19 dB. The VSWR of 1.103 validate the activeness of the proposed antenna array having maximum surface current 133.1 (A/m) and directivity of 4.48 dBi. The antenna array exhibit the H-Field strength of 160.52 (A/m) and E-Field of 36093.4 (V/m) prove the radiation capability at low frequency on body application. These properties demonstrate the suitability of proposed array antenna for on body medical wireless applications.

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