3results about How to "Broadband" patented technology

This invention provides a tunable on-chip frequency conversion system, comprising: a first laser for generating laser light of a first wavelength; a second laser for generating laser light of a second wavelength; an adjustable laser array, including at least one third laser for generating laser light of a third wavelength; a first photodetector for beating the first combined beam to obtain a fixed local oscillator signal; a second photodetector for beating the second combined beam to obtain an adjustable local oscillator signal; an electro-combiner for mixing the signal to be converted with the fixed local oscillator signal to obtain a mixed signal; an electro-optic modulator for modulating the third split beam, the mixed signal, and the adjustable local oscillator signal to form an optical carrier signal; and a third photodetector for beating the optical carrier signal to obtain a converted signal. This system employs double-conversion technology to achieve high-quality signal conversion, has tunability advantages, and can be widely applied in fields such as microwave photonic signal processing.

The utility model discloses a novel structure of a base plate-shaped antenna, which comprises a shell, the back of the shell is provided with a holding pole clamp used for fixing the shell, the holding pole clamp is fixedly connected with the shell through a connecting plate, the shell is internally provided with a reflecting plate, the surface of the reflecting plate is provided with a high-frequency oscillator, an intermediate-frequency oscillator and a low-frequency oscillator, and the high-frequency oscillator, the intermediate-frequency oscillator and the low-frequency oscillator are arranged in the shell. The intermediate-frequency oscillators, the low-frequency oscillators and the high-frequency oscillators are combined through a power division plate combiner to form a port, the two intermediate-frequency oscillators are combined through a one-to-two power division plate, and the three high-frequency oscillators are combined through a one-to-three power division plate; and the one-to-two power dividing plate and the one-to-three power dividing plate respectively penetrate out of the shell through leads of the double-frequency combiner and the three-frequency combiner. The utility model provides a novel structure of a base plate-shaped antenna, and solves the problem of poor omnidirectional coverage of a conventional glass fiber reinforced plastic antenna.

The invention relates to display screen protection glass with heat insulation and high light transmission functions and a production technology, and relates to the field of display screen outer protection glass production technologies. The inner-layer glass is arranged on one side of the outer-layer glass at intervals, and the outer-layer glass and the inner-layer glass are both coated with low-reflection plating layers; the heat-resistant connecting interlayer is arranged between the outer-layer glass and the inner-layer glass and is used for blocking part of ultraviolet rays and heat in sunlight; the inner-layer glass is arranged on the outer-layer glass, the heat-resistant connecting interlayer is arranged on the inner-layer glass, the ink printing layer is arranged on the heat-resistant connecting interlayer, the thickness range of the outer-layer glass is 5.8-6.2 mm, the thickness range of the inner-layer glass is 3.8-4.2 mm, the thickness range of the heat-resistant connecting interlayer is 0.74-0.78 mm, and the thickness range of the ink printing layer is 20-30 microns. The anti-reflection performance of the display screen protection glass is improved, ultraviolet rays and infrared rays can be prevented from penetrating through the display screen protection glass to enter the advertising machine, the temperature of the inner side of the display screen is reduced, the watching experience of the outdoor display screen is improved, and the service life of the outdoor display screen is prolonged.