Research and Design of One New Type of Satellite Antenna Unit

2013 ◽  
Vol 273 ◽  
pp. 375-378
Author(s):  
Hui Yong Zhang ◽  
Li Wang ◽  
Ming Feng Shi
Keyword(s):  
Microstrip Antenna ◽  
Return Loss ◽  
Frequency Range ◽  
Effective Protection ◽  
Band Frequency ◽  
Simulation And Optimization ◽  
Relative Bandwidth ◽  
New Type ◽  
Research And Design ◽  
Ku Band

antenna unit is the front end of the vehicle satellite, whether to the effective protection of the signal is received, the paper presents a novel microstrip antenna as a photonic crystal cyclical contour cylindrical air gap, and the shape of the radiation patch cutNotching of the ladder-type shape and has a good base slotted for a large number of experiments, simulation and optimization of the antenna with HFSS V12, results showed that the patch was "Asian" font, the highest performance antenna and the structure of the antennathe broadband resonant characteristics, the return loss is less than a 10 dB, impedance relative bandwidth of up to 47.1%, in a KU-band frequency range of the voltage standing wave ratio (less than VSWR <2), the relative bandwidth ratio reached 68.9%, significantly improved antennathe indicators.

scholarly journals Characteristic Mode Analysis Based X-Band Defected Dodecagonal Patch Antenna

2019 ◽  
Vol 9 (1) ◽  
pp. 3216-3220
Keyword(s):  
Microstrip Antenna ◽  
Return Loss ◽  
Mode Analysis ◽  
Center Frequency ◽  
Frequency Range ◽  
Characteristic Mode ◽  
Resonant Frequencies ◽  
Band Frequency ◽  
X Band ◽  
The Impact

A defected dodecagonal microstrip antenna fed through co-planar waveguide and operating in X-band frequency range(8-12 GHz) is proposed. Characteristic mode analysis is employed in examining the impact of defects on the resonant frequencies and return loss. Contrast in return loss for the suggested antenna with and without defects is dealt through Characteristic mode Analysis. Geometrical aspects of the proposed antenna are 40 mm × 35.5 mm × 0.1 mm. Subtrate material used in design is FR4 with a dielectric constant (εr ) = 4.4 and height (h) = 0.1m. CST Microwave Studio is used to simulate antenna parameters and Characteristic mode analysis. A return loss of -49.5dB at center frequency of 10.12GHz is observed with a fractional bandwidth of 47.6%. Gain of the antenna peaks at 4 dBi in the band of operation.

Research and Design of Magnetic Substrate Microstrip Antenna with Electromagnetic Band-Gap Structure

2014 ◽  
Vol 685 ◽  
pp. 314-319
Author(s):  
Hong Yang ◽  
Dan Liu ◽  
Wei Chen
Keyword(s):  
Magnetic Material ◽  
Magnetic Materials ◽  
Microstrip Antenna ◽  
Antenna Gain ◽  
Radiation Characteristics ◽  
Relative Bandwidth ◽  
Magnetic Substrate ◽  
Gain Loss ◽  
Band Gap Structure ◽  
Research And Design

Based on the magnetic materials (JV-5) substrate, Double L-shaped slot microstrip antenna is designed. The bandwidth is over 2 times that of the normal substrate and a 40% reduction in size happens.. On this basis, the microstrip antenna with magnetic substrate EBG structure is designed and the EBG structure uses the corrosive effects of joint floor, namely getting periodic H-shaped and circular structures by the floor corrosion, and performing a simulation with HFSS14.0. The results show that the EBG structure of magnetic material having a prominent advantage of the miniaturization and bandwidth-broaden compared to a microstrip antenna with non-magnetic materials substrate, resulting in more than 10% relative bandwidth and a slight gain loss. To some degree, introducing EBG structure can reduce the size of the antenna and increase its bandwidth, and it also improve the gain and radiation characteristics of the antenna.Key words: EBG structure; magnetic material;Double L-shaped slot microstrip antenna; gain

scholarly journals A Circular Disc Microstrip Antenna with Dual Notch Band for GSM/Bluetooth and Extended UWB Applications

2018 ◽  
Vol 7 (2.16) ◽  
pp. 11
Author(s):  
Sanjeev Kumar ◽  
Ravi Kumar ◽  
Rajesh Kumar Vishwakarma
Keyword(s):  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Ground Plane ◽  
Circular Disc ◽  
Ultra Wideband ◽  
Resonant Circuit ◽  
Frequency Range ◽  
Notch Band ◽  
Uwb Applications ◽  
Ku Band

A microstrip antenna with a circular disc design and modified ground is proposed in this paper. Circular shapes of different size have been slotted out from the radiating patch for achieving extended ultra wideband (UWB) with GSM/Bluetooth bands with maximum bandwidth of 17.7 GHz (0.88-18.6 GHz). Further, characteristic of dual notch band is achieved, when a combination of T and L-shaped slots are etched into the circular disc and ground plane respectively. Change in length of slots is controlling the notch band characteristics. The proposed antenna has rejection bandwidth of 1.3-2.2 GHz (LTE band), 3.2-3.9 GHz (WiMAX band) and 5.2-6.1 GHz (WLAN band) respectively. It covers the frequency range of 0.88-18.5 GHz with the VSWR of less than 2. Also, an equivalent parallel resonant circuit has been demonstrated for band notched frequencies of the designed antenna. The gain achieved by the proposed antenna is 6.27 dBi. This antenna has been designed, investigated and fabricated for GSM, Bluetooth, UWB, X and Ku band applications. The stable gain including H & E-plane radiation pattern with good directivity and omnidirectional behavior is achieved by the proposed antenna. Measured bandwidths are 0.5 GHz, 0.8 GHz, 1.1 GHz and 11.7 GHz respectively. 

Miniaturization Design of the 5.8GHz RFID Antenna Based on Metamaterial

2014 ◽  
Vol 577 ◽  
pp. 632-635 ◽  
Author(s):  
Peng Geng ◽  
Shu Hui Yang ◽  
Yue Wang ◽  
Yin Chao Chen
Keyword(s):  
Resonant Frequency ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Ring Resonator ◽  
The Other ◽  
Rfid System ◽  
Relative Bandwidth ◽  
System Requirements ◽  
Original Size

In this paper we designed a 5.8GHZ microstrip antenna whose relative bandwidth is 3.77% and return loss is-36.941dB. It meets the needs of RFID systems.Besides, the resonant frequency of the antennas is reduced to 5.2GHZ, after adding the “I” ring resonator. Also, the paper shows that the other performance of the antenna still meet the RFID system requirements. It is 47.1% of the original size after adjusting the resonant frequency of the antenna to 5. 8GHz.

Square microstrip multi band fractal antenna using EBG structure for wireless applications

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Suresh Akkole ◽  
Vasudevan N.
Keyword(s):  
Band Gap ◽  
Frequency Band ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Dielectric Materials ◽  
Fractal Antenna ◽  
Electromagnetic Band Gap ◽  
Content Type ◽  
New Type ◽  
Multi Band

Purpose Application of electromagnetic band gap (EBG) i.e. electromagnetic band gap technique and its use in the design of microstrip antenna and MIC i.e. microwave integrated circuits is becoming more attractive. This paper aims to propose a new type of EBG fractal square patch microstrip multi band fractal antenna structures that are designed and developed. Their performance parameters with and without EBG structures are investigated and minutely compared with respect to the resonance frequency, return loss, a gain of the antenna and voltage standing wave ratio. Design/methodology/approach The fractal antenna geometries are designed from the fundamental square patch and then EBG structures are introduced. The antenna geometry is optimized using IE3D simulation tool and fabricated on low cost glass epoxy FR4, with 1.6 mm height and dielectric materials constant of 4.4. The prototype is examined by means of the vector network analyzer and antenna patterns are tested on the anechoic chamber. Findings Combining the square fractal patch antenna with an application of EBG techniques, the gain of microstrip antenna has been risen up and attained good return loss as compared to the antennas without EBG structures. The designs exhibit multi-frequency band characteristics extending in between 1.70 and 7.40 GHz. Also, a decrease in antenna size of 34.84 and 59.02 per cent for the first and second iteration, respectively, is achieved for the antenna second and third without EBG. The experimental results agree with that of simulated values. The presented microstrip antenna finds uses in industrial, scientific and medical (ISM) band, Wi-Fi and C band. This antenna can also be used for satellite and radio detection and range devices for communication purposes. Originality/value A new type of EBG fractal square patch microstrip antenna structures are designed, developed and compared with and without EBG. Because of the application of EBG techniques, the gain of microstrip antenna has been risen up and attained good return loss as compared to the antennas without EBG structures. The designs exhibit multi-frequency band characteristics extending in between 1.70 and 7.40 GHz, which are useful for Wi-Fi, ISM and C band wireless communication.

scholarly journals Fabrication of Hybrid Fractal Microstrip Antenna for Mobile and Wi-Max Applications

2019 ◽  
Vol 8 (11) ◽  
pp. 3373-3377
Keyword(s):  
Mobile Applications ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Test Bench ◽  
Ground Plane ◽  
Low Frequency ◽  
Frequency Range ◽  
Radiation Characteristics ◽  
Directional Radiation ◽  
Feeding Technique

This paper presents the fabrication of an octagonal fractal hybrid micro strip radiator patch antenna that operates over a frequency range of 1.5 GHz to 2GHz suitable for low frequency wireless and mobile applications. The radiator has a dimension of 85x85mm2 on the radiating side and 100x86mm2 ground plane. The model is fabricated on Fire Redundant4 substrate with thickness of 1.6mm over a 10x10mm2 dimension and uses coaxial feeding technique. The model is tested for its performance in the range of 1.5 to 2 GHz on the radiator test bench consists of MIC10 antenna trainer kit with an allowable frequency of up to 2GHz. The radiation characteristics shown are having good return loss and average gain of 39dB with omni directional radiation pattern. The size is to be optimized as the dimensions are very large compared to the usual requirements.

scholarly journals esign of a 24GHz Rectangular Microstrip Patch Antenna for Wireless Application

2021 ◽  
Vol 9 (VI) ◽  
pp. 23-27
Author(s):  
Dr. N. Srinivasa Rao
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Software Tool ◽  
Microstrip Patch Antenna ◽  
Microstrip Patch ◽  
Wireless Application ◽  
Rectangular Microstrip Patch Antenna ◽  
Rectangular Microstrip Antenna ◽  
Ku Band

The microstrip antenna required for higher frequency application is to be light in weight, easy to fabricate and small in size. As the applications in S-band and Ku-band are increasing with the increase in technology the requirement for higher data rate so the proposed work is to design a 24GHz (ka band) rectangular microstrip antenna with stripline feeding, return loss to be less than -20dB and VSWR less than 0.5. The substrate is chosen to be RT/duroid 5880 with relative permeability 2.2. it is capable of covering satellite application, telemetry. HFSS software tool is used to design the antenna.

scholarly journals Perancangan dan Realisasi Antena Mikrostrip Log Periodik dengan Elemen Parasitik Air Gap untuk Aplikasi TV Digital DVB-T2

2019 ◽  
Vol 7 (2) ◽  
pp. 324
Author(s):  
INDRA SURJATI ◽  
SYAH ALAM ◽  
YULI KURNIA NINGSIH
Keyword(s):  
Microstrip Antenna ◽  
Return Loss ◽  
Digital Tv ◽  
Air Gap ◽  
Frequency Range ◽  
Parasitic Element ◽  
Measurement Results ◽  
Working Frequency

ABSTRAKPenelitian ini mengusulkan desain dan prototipe antena mikrostrip log periodik yang dikembangkan dengan metode parasitik air gap (celah udara) untuk aplikasi TV digital pada rentang frekuensi 478-694 MHz. Penggunaan elemen parasitik dengan celah udara bertujuan untuk meningkatkan nilai gain pada antena. Dari hasil pengukuran diperoleh nilai return loss sebesar -20.27 dB dan VSWR sebesar 1.31 pada frekuensi kerja 600 MHz. Bandwidth yang dihasilkan dari antena yang telah dipabrikasi adalah 273 MHz dengan rentang frekuensi kerja 461 MHz – 734 MHz. Gain yang dihasilkan dari antena mikrostrip log periodik dengan elemen parasitik adalah 16.67 dB pada frekuensi kerja 600 MHz atau meningkat 40.02 % dibandingkan dengan log periodik konvensional yang telah didesain sebelumnya. Dari keseluruhan hasil yang diperoleh maka dapat disimpulkan bahwa antena yang diusulkan dapat digunanakan sebagai antena penerima untuk aplikasi TV Digital di Indonesia.Kata kunci: antena, mikrostrip, log periodik, parasitik, celah udara ABSTRACTThis study proposes the design and prototype of log periodic microstrip antenna which was developed using the parasitic air gap for digital TV applications with a frequency range of 478-694 MHz. The use of parasitic elements with air gap aims to increase the gain of the antenna. From the measurement results, proposed antenna obtained return loss of -20.27 dB and VSWR of 1.31 at the working frequency of 600 MHz. The bandwidth produced from proposed antenna is 273 MHz with a working frequency range of 461 MHz - 734 MHz. The gain generated from log periodic microstrip antenna with parasitic element is 16.67 dB at the working frequency of 600 MHz or increased 40.02 % compared with conventional log periodic that have been designed before. From the overall results obtained, it can be concluded that the proposed antenna can be used as receiver antenna for Digital TV applications in Indonesia.Keywords: antenna, microstrip, log periodic, parasitic, air gap

CPW-Fed Circularly Polarized Slot Antenna

2017 ◽  
Vol 7 (10) ◽  
pp. 70
Author(s):  
Ajit Chandramohan Yadav ◽  
Shafiyoddin Badroddin Sayyad
Keyword(s):  
Frequency Band ◽  
Microstrip Antenna ◽  
Dielectric Material ◽  
Coplanar Waveguide ◽  
Impedance Matching ◽  
Dual Band ◽  
Slot Antenna ◽  
Frequency Range ◽  
Band Frequency ◽  
Circularly Polarized

This article demonstrates the coplanar waveguide (CPW) feed L- slot microstrip antenna for multi frequency band operation is presented. The proposed antenna is excited by a single CPW feed connected to a Microstrip antenna. In this radiating patch and feed are etched on the same dielectric material. A SMA connector is used to connect the feed strip which couples the energy to a radiating patch by capacitive feed. The length and width are designed to obtained dual band frequency range. A truncation is used for multiband operations and for proper impedance matching. L- slot is used to increase the depth of S11 parameter. 

scholarly journals Wide ku-band log periodic dipole array microstrip patch antena using defected ground structure for electronic support measure

2018 ◽  
Vol 218 ◽  
pp. 03014
Author(s):  
Immanuel Wicaksono ◽  
Dharu Arseno ◽  
Yuyu Wahyu
Keyword(s):  
Radiation Pattern ◽  
Microstrip Antenna ◽  
Microstrip Line ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Band Frequency ◽  
Dielectric Thickness ◽  
Support Measure ◽  
Materials Used ◽  
Ku Band

Microstrip antenna as a supporter of wireless communication, which is the development of conventional antenna, has various advantages contained its predecessor, one of which has a patch that can be modified according to the wishes of the user. Microstrip antenna Log Periodic Dipole Array with Defected Ground Structure is one of the patch modification of antenna that allows antenna to work on wideband frequency 12-18 GHz (Ku-Band). Its use is intended for communication on satellites. In this research, will be designed and realized microstrip antenna with modification of Log Periodic Dipole Array patch working on frequency 12-18 GHz (Ku-band). The design will also use modifications to the ground structure with the use of slots using microstrip line feeding techniques. In this research, microstrip antenna design of Log Periodic Dipole Array with Defected Ground Structure works on 12-18 GHz (Ku-Band) frequency using slot using microstrip line feeding technique, which designed by using application of electromagnetic simulator (Integrated Software). The desired specifications are; gain ≥ 6 dBi, VSWR <2, as well as 6 GHz bandwidth, with unidirectional radiation pattern and linear polarization. Substrate materials used in design are Roger 5880 Duroid with a relative permittivity of 2.2 and a dielectric thickness of 1.57mm. Measurement results on the realization of this tool; return loss on each of the 12, 15, 18 GHz frequency markers of -25,457 dB, -12,939 dB, and -11.004 dB; with the value of VSWR 1.112, 1.593, 1.786. Impedance of 44,988 Ω, 34,129 Ω, 27,792 Ω. Gain respectively of 8.907 dB, 8.931 dB, 8.774 dB. Bandwidth 6 GHz. Unidirectional radiation pattern and elliptical polarization.

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