Inset-fed Patch Antenna Research Articles

Design, Optimizing and Improvement of Microstrip 5G Patch Antenna Parameters Using Keysight Advanced Designed System (ADS)

This paper described the microstrip Patch antenna of 5G mobile phone with calculation, simulation, and optimization method by using the ADS Simulation software. The patch antenna sized could be applied for various applications and designed wideband, multiband frequency operation. Bandwidth improvement of 3500 MHz is progressed after optimization and the patch can operate for wideband application. In this paper, the calculation method of inset feed patch antenna, designed with simulation by using the calculation method. However, some of the calculations are matched the designed frequency. Therefore, we optimized the design with length only. Moreover, the author implemented the designs that the MLIN (Microstrip Line) is based on the patch distributive line and Asymmetric Edge Coupled Microstrip Lines is designed as the MACLIN3 and MLOC mean microstrip location design.

A comparison of techniques for finding coefficients of polynomial chaos models for antenna problems

A range of different techniques for determining the unknown coefficients of Polynomial Chaos Expansion (PCE) models for antenna structures, are presented. PCE models offer significant advantages over Monte Carlo analysis, for the modeling of the statistical behavior of structures, but the different approaches for calculating the PCE model coefficients exhibits a large variation in the number of required basis points, that number also being problem specific. A range of model coefficient calculation techniques are evaluated in this article, for the problem of modeling cross-polarization of an inset-fed patch antenna. This structure is one of the most widely used antenna structures, often produced in high-volume, and serves as an excellent example to emphasize the variation in performance between the different techniques, and problem-specific nature of finding an optimal solution. It is shown that the most optimal method requires fewer than 10% analysis points of the least optimal, and a factor of 100 fewer points than Monte-Carlo analysis.

Path loss compensated millimeter wave antenna module integrated with 3D ‐printed radome

Millimeter wave antennas designed at 28 GHz is essential for future 5G base stations or access points and mobile terminals. In this paper, a compact pattern diversity module for millimeter wave 5G base stations is proposed by using 3D-printing for radome design. In order to achieve path loss compensation in an indoor base station context, the gains of the antennas radiating at ±45° must be 3 dB higher than the antenna radiating in the boresight axis. First, an inset fed patch antenna integrated with a low-cost industry standard 3D-printed superstrate with Polylactic acid (PLA) is investigated to study its radiation characteristics. The radome is designed in such a way for optimal gain enhancement with minimal physical footprint. The height of the 2 mm thick superstrate is optimized for a boresight gain of 8 dBi. Second, the 3D-printed superstrate is optimized for a boresight gain of 11 dBi, which satisfies the criterion of path loss compensation, in this case the antenna achieves an aperture efficiency of close to 72% at 28 GHz. A compact pattern diversity module with customized 3D-printed radome is also presented to achieve path loss compensation and wide angular coverage of ±70° with associated isolation of less than 35 dB across the ports and the band. Detailed simulation and measurement results are presented.

Weak-Field-Based Self-Decoupling Patch Antennas

In this article, a new self-decoupling method, namely weak-field-based decoupling technique, is proposed and validated based on inset-fed patch antenna arrays. The self-decoupling effect is realized by taking advantage of the inherent weak-field area created by the feeding structure and proposed inset-fed patch. By strategically arranging the array element in the weak-field area of the adjacent antenna element, the coupling strength between adjacent elements can be controlled under a very low level without the need of any additional decoupling circuitry or structures. A two-element patch antenna array was first developed and analyzed, achieving a peak isolation level of 61 dB. Afterward, a four-element linear patch antenna array was designed, fabricated, and measured to further validate the proposed technique. With the distinct advantages of simple structure and effective isolation enhancement, the proposed self-decoupling method is very promising for MIMO applications.

Frequency Reconfigurable Patch Antenna for L band Applications

novel design of a Frequency Reconfigurable patch antenna which has applications in the L- Band, namely, radars, GPS, telecommunication system and aircraft surveillance is presented in this paper. The antenna having dimensions of 34.45mm x 45.64mm has been designed using Ansys HFSS. It is a microstrip line inset fed patch antenna with square concentric rings as Defected Ground Structure (DGS) and FR-4 as the substrate. Two PIN diodes, BAR 63-02V, have been used on the ground plane to carry out switching in the frequency domain. The simulated results depict the frequency shift from 1.612 MHz to 1.815 MHz for different combinations of PIN diodes while keeping the radiation patterns intact. The simulated S11 values are well below the – 10dB value in all the four combinations. The average impedance bandwidth obtained is 400 MHz. The measured results on the fabricated antenna using Vector Network Analyzer are in close approximation to the simulated results.

Prize-Winning Ohio University Students Present Their Work on an Antenna for Body Area Networks [Education Corner

This article provides details on the OU BAN system that was submitted to the 2015 IEEE Antennas and Propagation Society (AP-S) Student Design Contest: Antenna for Body Area Networks. The team completed this project as its undergraduate senior capstone design sequence. The system senses heart rate with a chest-mounted heart rate monitor and transmits these data to a bodymounted receiver using a 5.5-kHz data link; the low frequency of this link helps minimize body effects. Additionally, temperature and provisions for fall detection using an IMU are incorporated. Sensor data are provided to an Arduino microcontroller and interfaced with a BLE transceiver to transmit data via a specifically designed inset-fed patch antenna. The torso-mounted BLE patch antenna provided good match efficiency and good radiation coverage in the forward and downward directions. Sensor data were transmitted from the torso-mounted BLE antenna to a Nexus 5 smartphone running a custom-built Android application on the smartphone. Various subsystem and anechoic chamber system-level tests were performed. The data indicate satisfactory performance of the demonstrated OU BAN system with the Bluetooth antenna mounted to the user's torso and the smartphone in three test locations: held in the hand 1 m in front of the torso, in the front pocket, and in the back pocket. The OU BAN configuration could be improved by miniaturizing the system to be more easily worn by the user.

Assembly-Line-Compatible Electromagnetic Characterization of Wearable Antenna Substrates

Electromagnetic characterization of materials applied in wearable components is of paramount importance for the design and production of reliable devices. Therefore, we propose a novel approach that compares simulations and measurements performed by a resonance-perturbation method. An inset-fed patch antenna operating in the vicinity of the 2.45-GHz Industrial, Scientific, and Medical frequency band enables us to quickly estimate the properties of a given substrate sample. First, the two frequency values at which the simulated return loss peak of the fixture crosses a given threshold value are modeled as polynomial functions of the material's relative permittivity and loss tangent. Then, the comparison between modeled and measured frequencies yields the electromagnetic properties of the material. The approach is validated by characterizing the high-frequency laminate on which the antenna is implemented. Next, the method is applied to several textile materials of interest. It is shown that the proposed technique is fast, precise, and nondestructive. As such, it is suitable for integration into an assembly line, where substrate samples are first quickly characterized before being used in the production of the actual antennas.

반사판을 갖는 인셋 급전 CSLR 패치 안테나 제작

본 논문에서는 인셋 급전한 패치의 접지면에 Complementary Single Loop Resonators(: CSLRs)을 배열한 안테나의 복사패턴을 개선하기 위하여 도체 반사판 사용을 제안하였다. 제안된 안테나의 반사판은 패치의 접지면으로부터 약 <TEX>${\lambda}_0/4$</TEX> 아래에 위치하고, 크기는 패치의 약 2배 정도이다. 유전율 2.5, 두께 0.787 mm인 마이크로스트립 기판을 사용하여 안테나를 설계, 제작하여 실험하였고, Finite Element Method(: FEM) 기반의 3D EM Solver인 HFSS를 사용하여 시뮬레이션 하였다. 실험결과, 반사판이 있는 경우의 안테나 공진주파수와 정합특성은 반사판이 없을 때와 거의 동일하게 변화가 없었으나, 복사패턴은 반사판에 의해 상당히 개선되었음을 확인하였다. In this paper, we propose the CSLR(: Complementary Single Loop Resonators)-loaded inset fed patch antenna with a conducting reflector to improve the radiation patterns. Reflector of the proposed antenna is located below about <TEX>${\lambda}_0/4$</TEX> from the ground plane of the patch, the size is about two times of the patch. The proposed antenna is designed and fabricated on the substrate which has a dielectric constant and thickness with 2.5 and 0.787 mm, respectively. Simulation results are obtained by using the HFSS, 3D EM Solver based Finite Element Method(: FEM). The resonant frequency and matching characteristics of the antenna with reflector are substantially the same as when there is no change in the antenna without reflector, it is confirmed that radiation patterns are significantly improved by the reflector.

CSLR을 갖는 인셋 급전 패치 안테나 설계 및 제작

CSLR을 갖는 인셋 급전 패치 안테나 설계 및 제작

Small size quasi-fractal microstrip antenna M1 EBG-GP

A new patch antenna using the Minkowski fractal curve and Electromagnetic Bandgap structure on plane ground is proposed. The design was based on HFSS and a prototype was built and measured in order to validate the numerical results. A better impedance matching for the device was obtained using the inset-fed technique. The measured return loss for the proposed antenna at the resonant frequency is lower than �15 dB. The M1 EBG-GP antenna resonant frequency is lower than that of a corresponding rectangular inset-fed patch antenna. This results in a reduction of 35.6% for this antenna resonating at 2.45 GHz (ISM band).

FDTD ANALYSIS OF MICROSTRIP PATCH ANTENNA COVERED BY PLASMA SHEATH

In this paper, a microstrip inset-fed patch antenna covered by plasma sheath is simulated by using the (FD)2TD algorithm. Expressions of calculating the coefficients in the electric field update equation for cold plasma are presented in detail. Computational examples illustrate that the resonant frequency of the patch antenna covered by plasma sheath is changed. The curves presented in this paper may be useful when introducing appropriate corrections in the design of the microstrip patch antennas in the plasma environment.