5results about How to "Small insertion loss" patented technology

The application discloses an S-band reflective phase shifter based on a cross-coupling line coupler, and belongs to the fields of wireless communication and digital signal processing. The reflective phase shifter is designed based on the cross-coupling line coupler, has the advantages of small size, low insertion loss and wide bandwidth compared with existing branch line couplers and Langer couplers, can replace the digital phase shifter used by a traditional phased array antenna, and solves the problems of high cost and high power consumption of the traditional phased array antenna. In addition, the reflective phase shifter can be integrated on a PCB, has the advantages of easy processing, low cost and small size, is easy to be integrated with a planar printed phased array antenna, and realizes the miniaturization and low cost of the phased array antenna.

This application provides an integrated passive filter circuit, including two first filter units, two second filter units, and a third filter unit. Each filter unit includes a main path and a grounding element connected to the main path. The two second filter units are symmetrical with respect to the third filter unit. The two first filter units are symmetrical with respect to the two second and third filter units. The end of the main path of the first filter unit serves as the port of the integrated passive filter circuit. The third filter unit includes two parallel and different grounding elements. The solution provided in this application employs a semi-symmetrical structure design. The symmetrical structure on both sides effectively improves the consistency at both ends of the filter and simplifies the adjustment of the reflection characteristics on both sides of the device. The asymmetrical structure in the middle improves out-of-band rejection on both sides, reduces the number of devices, and lowers device insertion loss.

This application belongs to the field of laser regenerative amplification, specifically disclosing a high-energy pulse train regenerative amplifier based on electro-optic modulation programmable. This application applies phase disturbance and amplitude modulation to the pulses using an electro-optic modulator (EOM), coupled with an active feedback system based on a spectrometer and piezoelectric ceramic (PZT). The electro-optic modulator and PZT are matched in response speed; the bandwidth of the EOM must be sufficiently high to handle the independent modulation of each pulse, while the bandwidth of the PZT needs to be able to track cavity length changes caused by environmental disturbances. Because the electro-optic modulator can precisely and rapidly control the phase and amplitude of each pulse, disrupting the fixed phase relationship between pulses, it avoids spectral modulation effects caused by coherent superposition, improves spectral uniformity, and achieves uniform and efficient amplification of multiple pulse trains, significantly improving energy extraction efficiency and system output stability.

This invention discloses a small, equal-band dual-frequency transceiver based on wireless communication technology. It includes a ceramic dielectric body, a tuning element, a multilayer circuit body, and an external electrode assembly. The tuning element is disposed on top of the ceramic dielectric body. The multilayer circuit body is disposed inside the ceramic dielectric body and electrically connected to the tuning element through a via structure. The multilayer circuit body includes a low-frequency channel filter and a high-frequency channel filter. The external electrode assembly is disposed at the bottom of the ceramic dielectric body. The low-frequency channel filter outputs signals within a set low-frequency band, and the high-frequency channel filter outputs signals within a set high-frequency band. This invention achieves a large capacitance value within a small volume by using vertical coupling. By setting the tuning element, the stopband bandwidth and suppression depth of the dual-frequency transceiver can be flexibly adjusted by changing the value of the tuning element, resulting in miniaturization, wide stopband, high suppression, and tunability.

The invention discloses an antenna and electronic equipment, and the antenna comprises a first antenna array, a second antenna array, a single board, a radiator, and a first radio frequency connector, and the first antenna array and the second antenna array are used for transmitting and / or receiving signals. The single board is provided with one or more components for processing signals; the radiator is used for radiating the assembly; the first radio frequency connector is used for the signal connection assembly and the first antenna array; the second antenna array, the single board, the radiator and the first antenna array are stacked in the first direction; the radiator is located between the single board and the first antenna array, and the single board is located between the second antenna array and the radiator; the radiator comprises a plurality of radiating tooth sheets which are arranged in a stacked mode in the second direction or the third direction, a gap is formed between at least two adjacent radiating tooth sheets, the first radio frequency connector is contained in the gap, and the first direction, the second direction and the third direction are perpendicular to one another. According to the antenna and the electronic equipment provided by the embodiment of the invention, the networking investment cost can be reduced.