Design and experimental demonstration of a beam scanning lens antenna.

A beam scanning antenna based on an all-metal lens is presented for high-power microwave (HPM) application in this paper. This design includes a feed antenna and two layers of different all-metal lenses, whose prototypes operating at 14.25 GHz have been successfully designed and fabricated with an aperture radius of 300 mm.

A dielectric embedded reflectarray for high-power microwave application.

To solve the problem of the large axial size of high-power microwave (HPM) reflectarray antenna and difficulty in vacuum packaging, a dielectric is introduced in the design of the antenna element. On this basis, a dielectric embedded metasurface reflectarray antenna (DEMRA) with high power handling capacity and wide-range beam scanning capability is proposed and fabricated. Compared with traditional HPM antennas, the DEMRA does not need to be sealed and can work directly in open-air conditions.

A compact high-power microwave TM-TE mode converter.

In circular waveguides, the TE mode has the lowest transmission loss, which is very suitable for long-distance transmission of high-power microwaves (HPMs). The output mode of HPM sources is mainly the TM mode; however, there are few research studies on mode converters of TM-TE. In this paper, a high efficiency HPM TM-TE mode converter is designed; compared with the traditional TM-TE mode converters, the structure of the mode converter is compact and easier to process.

A double-layer wideband radial-line waveguide power divider/combiner for high-power microwave application.

A compact double-layer wideband 1:60 power divider/combiner based on a radial-line waveguide is designed and investigated for high-power microwave (HPM) applications. Compared with other HPM radial-line power dividers, the proposed power divider is smaller and more compact. The power divider is miniaturized by the double-layer method, and the wideband characteristic is realized by a specially designed wavy disk.

Single-Port Percutaneous Nephroscopy combined with GreenLight Laser in Simple Renal Cyst.

Objective: To explore the therapeutic effect of percutaneous nephroscopy combined with Green Light laser on simple renal cyst.

Methods: A retrospective analysis was conducted to review the clinical data, surgical procedures, intraoperative bleeding, postoperative adverse reactions, and length of stay of 32 patients who had been admitted to Affiliated Hospital of Hebei University from January 2018 to February 2019. All patients had been diagnosed with simple renal cyst by imaging examination and met the surgical indications for single-port percutaneous nephroscopy combined with GreenLight laser for unroofing and decompression of the renal cyst.

Treatment of renal calculi without hydronephrosis using a standard channel assisted by a visual puncture system.

Objective: To study the safety and efficacy of standard channel establishment using a visual puncture system in the treatment of renal calculi without hydronephrosis.

Methods: We retrospectively analyzed data from 46 patients undergoing percutaneous nephrolithotomy via a standard channel assisted by a visual puncture system, including number of punctures, duration of procedure, hemoglobin level after surgery, calculi clearance rate, and postoperative complications.

Results: Sixty-nine channels were established, including a single channel in 26 cases, double channel in 17 cases, and three channels in 3 cases.

An aperture coupled microstrip antenna array for high power microwave application.

A three-layer aperture coupled microstrip antenna array (ACMA) is designed and fabricated for wideband high-power microwave (HPM) application, which has not been reported in the field of HPM. In this paper, the proposed antenna array overcomes the disadvantage of low power capacity of traditional microstrip antenna arrays. Moreover, based on the H-shaped aperture coupled structure, it enhances the relative bandwidth up to more than 50%.

Designs and experiments of a novel compact E-shaped wideband planar antenna array for high-power microwave application.

A novel compact E-shaped wideband planar antenna array (CEWPA) is designed and fabricated for high-power microwave (HPM) application. The CEWPA is a kind of planar antenna and it has a lot of advantages such as low profile, wideband, high efficiency, easy to manufacture, and light weight. Compared with traditional planar antenna arrays, it overcomes the disadvantage of low power capacity through special metal structure designs.