The development of 5G technology has been extremely rapid in recent years. It has the characteristics of high speed, low latency and large connection. The current 5G solutions are divided into millimeter wave and Sub-6GHz. In addition to the rapid development of Sub-6GHz, The advancement of millimeter waves is also changing rapidly. Millimeter wave, as the name suggests, refers to electromagnetic waves with wavelengths between 1-10mm. Now it is no longer just at the research level, but is rapidly entering the commercial level and gradually covering the surrounding areas of life.

With the popularization of 5G mobile phones, we will find that the crowded channel environment of Sub6 can no longer meet the needs of users for high data volume and high speed. Therefore, major mobile phone manufacturers are gradually turning their attention to millimeter waves. It can be said that millimeter wave is the development direction of the next generation of mobile phones, so as to meet the increasingly high data transmission rate requirements of the general public in the era of streaming media.

challenge

However, there are still some problems with the fast-developing new 5G standard. Compared with Sub6, millimeter wave is too “fragile”, so it is easily blocked by the body, walls, clothes and even the casing of the mobile phone.

With the needs of the public, there are more and more materials and styles of mobile phone cases. The metal mobile phone case has a beautiful appearance, good feel and heat dissipation, and is resistant to falling, but it is prone to signal shielding problems. With 5G, wireless charging, etc. The wide application of new wireless transmission methods will become an urgent problem to be solved. At present, the application of silica gel, plastic, leather and other materials is also gradually hot. So how will these different material mobile phone cases affect the millimeter-wave antenna of the mobile phone?

When it is necessary to equip a 5G millimeter-wave mobile phone with a mobile phone case, how to evaluate and select a suitable material becomes an inevitable problem for mobile phone design manufacturers. Efficient and economical sampling and verification? What other means can be used to analyze the millimeter wave shielding performance of various materials?

solution

Hongke’s handheld millimeter-wave barrier testing solution can complete the testing of barrier materials anytime, anywhere, and can be adjusted accordingly according to needs, which greatly shortens the time required for early material testing. Combined with the storage capacity of the device itself, only one test is required. , Once exported, the analysis and comparison of multiple materials can be directly realized, which can greatly save the engineer’s time while ensuring the accuracy of the results.

In addition, in the production line test, Hongke also provides a modularized millimeter wave barrier measurement solution, which can efficiently and economically complete the test of multiple samples and compare with the design situation, so as to verify the production quality of the product and generate reports in time feedback.

In the whole test process, the “one-receive, one-transmit” form is adopted, and Hongke HK-SG Compact handheld signal generator or Hongke HK-SG series mini signal generator can be used to transmit a beam of specific frequency and specific power. The signal is transmitted in a certain direction through the constraint of the directional antenna, and after passing through the object to be tested, the signal is received by the Hongke real-time spectrum analyzer HK-R5550 or Hongke Spectrum Compact handheld spectrum analyzer on the other side, and the received signal is fed back. The magnitude of the signal power at the frequency, so as to reflect the blocking and blocking ability of the material through the measured attenuation effect.

Responsible editor: haq

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