Bu çalışmada 5G uygulamalarında kullanılmak üzere dielektrik malzemesi PF-4 (Ԑr:1,06, tanδ:0,0001, h:2 mm), toprak ve yama kısmı yapışkan bakır banttan oluşan, toplam 42,453 GHz bant genişliğinde çalışan yüksek kazançlı bir eliptik mikroşerit anten tasarlanmıştır. Tasarlanan uygulamalar için Orta I, II Yüksek bantta yer alan 6 farklı frekans aralığında çalışabilmektedir. Antenin çalışma aralıkl...

Abstract We showed that the ferromagnetic correlation extended far into what was thought to be paramagnetic phase for pristine Ca 3 Co 2 O 6 in our Bi-substituted compound and found a between magnetic dielectric anomaly this region. have observed enhancement of property (dielectric constant 200 with loss factor 0.01 at 1 MHz), which is attributed high ionic polarizability Bi. The response curve...

Lead-free, high piezoelectric performance, Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (BZT-0.5BCT) sub-micron powders with perovskite structure were fabricated using the sol-gel process. A 0–3 type composite was obtained by choosing epoxy resin as matrix and BZT-0.5BCT, acetylene black as functional phases. Particular attention was paid to the damping behavior of composite with different content of B...

In the millimeter-wave band, the series-fed array antenna is facing a problem of large transmission loss and narrow bandwidth by using a high-permittivity and large-loss-tangent material. In this paper, an air region is inserted in the half of the height in the LTCC waveguide of εr =6.6 and tanδ =0.013 to reduce the transmission loss. The reduction of the equivalent dielectric constant by the a...

This paper presents the design of an ultra-wide band (UWB) circular patch antenna with microstrip line feed and optimization of various antenna parameters. The antenna with dimension of (33 x 30 x 1.5) mm 3 is fabricated on FR-4 epoxy substrate having permittivity constant r=4.3, loss tangent tanδ=0.002. The designed antenna has the capability of operating in the bands (2.7-4) GHz, (6.8-12.5) G...

A series of Li-Cd ferrite samples of composition Li0.5-x/2CdxBi0.02Fe2.48-x/2O4 for x = 0.0 to 0.7 were prepared by conventional double sintering ceramic technique. From temperature dependent permeability, μ′ at T=TC indicates that the samples have high homogeneity according to Globus et al. The Curie temperature, TC is found to decrease with increasing Cd content. The sample with x=0.7 shows a...

This study examined the applicability of pomegranate peel extracts (PPE) and microencapsulated (MPE) in yogurts made with cow’s milk soy drink mixtures. For preparing PPE, powders were extracted by 50% ethanol an ultrasonic water bath. PPE was encapsulated using a spray dryer. Phytochemical composition antioxidant activity MPE determined 0.5% 1% used yogurt production. Physicochemical, rheologi...

In this work, Aluminum doped Zinc oxide thin films were sputtered on glass substrate by the direct current (DC) magnetron sputtering method. The influence of Ar gas pressure structural and optical properties was measured. parameters calculated UV–Visible spectroscopy, nature transition reveals allowed for prepared films. Also, some physical quantities such as strength electron–phonon interactio...

The iron-based ceramic NdFeAsO was synthesized by the solid-state reaction method. tetragonal crystal structure confirmed at room temperature through X-ray diffraction technique. dielectric characteristics i.e. constant (εr) and loss tangent (tanδ) of sample were studied a wide range frequencies with an impedance analyzer revealed that these quantities decreased increase in frequency. anomalies...

A low temperature fired Na2CaV4O12 ceramic was synthesized via a solid-state reaction route at range of 350–550 °C. The Thermal analysis confirmed the densification and melting to be 530 °C 580 °C, respectively. Dielectric properties together with electrical conductivity were characterized broad frequency range. super-low relative permittivity εr = 7.72 loss tangent tanδ 0.06 obtained 1 MHz roo...