Title: RF centre frequency adjustable filer
Application Number: 200610097283 Application Date: 2006.10.27
Publication Number: 1949585 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H01P1/20;H01P5/00
Applicant(s) Name: Zhenjiang Lanbaoshi Electronic Industry Co., Ltd. Address:
Inventor(s) Name: Tang Lequn
Attorney & Agent: wangxu dong
Abstract:
    The invention is a filter with adjustable central radio frequency, relating to radio frequency field and mobile communication field, where coupling screw rod is located between two adjacent frequency tuning screw rods on the inner cover plate of a casing, the coupling screw rod and the two frequency tuning screw rods are equipped with lock nuts, and spring pads; the frequency tuning screw rods are arranged on the inner cover plate and opposite to air medium resonator; central frequency tuning screw rod is connected through screw thread with air medium resonance rod, and the bottom end of the central frequency tuning screw rod is connected with belt pulleys, drive pulley is located between two belt pulleys, transmission belt is wound on the belt pulleys, drive pulley and link rod, and handle is fixed on the link rod; 50 Ohm coaxial input and output interfaces at two ends of the casing are connected with the nearest resonance rods through thin silver-plated input and output coupling lines, respectively. And it can be used in frequency selection and capturing of high power communinication; and small range adjustment and filteration of system frequencies in different electromagnetic environments.
Time: 12
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