RADIATED EMISSION POSITIONING RECTIFICATION METHOD FOR MULTI-USER UNIT OF PASSIVE OPTICAL NETWORK

WIPO Patent Application WO/2020/207181

A1

The present invention relates to the field of electronic communications, and specifically relates to a radiated emission positioning rectification method for a multi-user unit of a passive optical network. The method comprises the following steps: diagnosing an interference source and an interference propagation path; performing safe grounding and bonding on EMC in advance; removing an unnecessary frequency component from a frequency domain by means of filtering, thereby reducing electromagnetic disturbance in two aspects, i.e. conduction and radiation; suppressing, by means of shielding, various types of electromagnetic interference propagated in space; replacing a suspicious element with an element meeting an EMC requirement; and with regard to a crystal oscillator product, reducing output energy of a crystal oscillator and a harmonic wave thereof by means of a method of connecting resistors in series or in parallel. In the present invention, starting from the root, radiation energy is reduced from a source, a path of radiated interference is destroyed or changed, a gap is reduced, filtering is enhanced, and a radiation mechanism is destroyed by changing the position of a line, such that radiated emission positioning rectification of a multi-user unit of a passive optical network can be rapidly and accurately performed.

CAI YUNZHI (CN)
CAO PENG (CN)
WANG HAIBO (CN)

PCT/CN2020/078941

October 15, 2020

March 12, 2020

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TAICANG T&W ELECTRONICS CO LTD (CN)

H05K9/00

CN109819641A	2019-05-28
CN106499564A	2017-03-15
CN106019023A	2016-10-12
US20150227665A1	2015-08-13
CN105514898A	2016-04-20

BEIJING TIAN QI ZHI XIN INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)

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