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Power noise amplifier
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China releases global high-quality journal list for medicine

Update time  2026-03-23 11:26 Read

SHANGHAI, March 21 (Xinhua) -- China on Saturday published a high-quality journal list in the fields of medicine and life sciences, independently compiled by domestic institutions, offering a Chinese perspective on global academic journal evaluation and helping to enhance the country's academic influence.

The journal list was jointly released by Dongbi Technology Data Co., Ltd., in collaboration with the Chinese Academy of Medical Sciences and Shanghai Jiao Tong University.

A total of 4,027 medical journals and 3,064 life sciences journals were chosen to feature on the list. This list is intended to serve as a reference for researchers in selecting journals for submission, for academic institutions in research assessment, and for research management authorities in optimizing journal tiering systems.

The list was iteratively generated based on global citation big data from 2023 to 2025, starting with a set of authoritative seed journals. The journals are categorized into four tiers, forming a pyramidal structure: Tier A represents top-tier journals, Tiers B and C constitute the academic core, while Tier D encompasses emerging and specialized fields.

Qiu Xiaochun, deputy director of the medical committee of the Library Society of China, noted that the release of this list marks a significant step forward in establishing an independent voice for research evaluation in China's medical and life sciences fields.



50W power noise amplifier

 

  1. Model

PA2400-2500M-50G1

  1. .RF technical parameters

 

Item name

Technical parameters

working frequency

2400-2500MHz

Saturated power output

47±1dBm

Gain

45±1dB

In-band flatness

≤±1dB

Input and output standing

≤1.5

Out-of-band spurs

9kHz1GHz≤-36dBm/30kHz 1GHz12.75GHz≤-30dBm/30KHz

Operating Voltage

DC+28V

Working current

3.5A

Power supply interface

Red &Black power cord

RF port

SMA-KFD

Amplifier size

111*37.2*18mm

Operating temperature

-10+55

Relative humidity

5%95%No condensation

Storage temperature

-25+65

 

  1. Dimension