Duplex Circular Polarizer

Introduction

Duplex circular polarizer is a broadband circular polarizer. Because the transmitter and receiver can share a circular polarizer in a different frequency receiving and transmitting communication system, it is called a broadband circular polarizer. It can realize line to circular polarization conversion within 20%, 40% bandwidth or even octave bandwidth, and has good circular polarization performance. The axial ratio is less than 2dB, 3dB and 5dB respectively. The frequency covers 2-40 GHz. The circular polarizer adopts the combination of positive and negative phase shifting units, which makes the phase shift become smooth with the change of frequency, so as to achieve the effect of 90 ° wide band phase shifting.

Parameter index

For the circular polarizer, the parameter index to be considered is mainly the axial ratio, specifically the shift phase difference.

Another important parameter is standing wave, which reflects the matching degree.

Insertion loss is also an important parameter of the circular polarizer. The insertion loss of the circular polarizer not only marks the loss of transmission through the circular polarizer, but also increases the noise temperature of the antenna. For the feed source, it is a noise source that cannot be ignored. As a part of the feed source, the circular polarizer is also a noise source. Therefore, it is necessary to strictly control the insertion loss of the circular polarizer. The insertion loss of the feed is also related to the frequency band used. The lower the frequency band, the smaller the insertion loss value.

Feature

The duplex circular polarizer is simple in structure, small in size, and can cover a wider frequency band, making it possible to use the same circular polarizer to meet the requirements of mobile communication, satellite communication, short distance communication, broadband access communication and digital television reception of different standards in different regions, and can meet the requirements of system miniaturization, with broad application prospects.

Effect

Circular waveguide circular polarizer refers to a device that converts linearly polarized TE11 mode from the input to circularly polarized TE11 mode in a circular waveguide. It can be realized by various devices, such as circular waveguide plus 90 ° dielectric phase shifter; Or circular waveguide plus 90 ° screw group phase-shift type; Or circular waveguide stepped diaphragm type; Or elliptical waveguide type, etc. Duplex circular polarizer is usually used together with the feed source of antenna, antenna unit or reflector antenna, or it can be used separately as a device and then connected to the feed system.

Certificate

We implement TQM (Total Quality System) and SOP (Standard Operation Procedure) with ISO 9001:2017 certification, which assures a strong commitment to quality standards and customer satisfaction.

Delivery

We will send the goods to you by DHL, FEDEX, UPS, EMS, AIR, etc. Usually 7-15 working days after receiving your 100% payment. For bulk orders: 15-35 working days after receiving the deposit.

Packaging

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