34 results about "Dielectric antennas" patented technology

The invention discloses a high dielectric constant microwave dielectric material added with strontium oxide and a preparation method and an application thereof. The general formula of the material is Bax(Li0.5Sm0.5)yZrx+yO3(x+y)+zWt.% SrO, wherein x is greater than or equal to 0.75 but less than or equal to 0.85, y is greater than or equal to 0.15 but less than or equal to 0.25, z represents that SrO is added in percentages by mass, and z is greater than or equal to 0.06 but less than or equal to 0.08. The preparation method comprises the steps: mixing; pre-sintering; ball-milling again; granulating; forming; rubber discharging; and sintering. The dielectric constant epsilon r of the material disclosed by the invention is 125.8-152.6 which can be adjusted in a certain range; Q*f0 is 3656-3820GHz, and the temperature coefficient of frequency tau is [(-8.5)-(+53.8)]*10<-6>/ DEG C which can be adjusted in a certain range. As the material disclosed by the invention has the high dielectric constant and both the dielectric constant and the temperature coefficient of frequency can be adjusted in a certain range, the material is particularly suitable for being used for dielectric antennas.