Electronic device integrated with antenna array and radio frequency front end device and chip

Abstract

The present invention discloses an electronic device integrated with an antenna array and a radio frequency front end device and a chip. The electronic device includes an antenna array, a radio frequency front end device, and an interface pin working in a millimeter wave frequency band. The antenna array adopts a millimeter wave active phased array antenna, and includes a plurality of antenna units. A distance of 0.1 to 10 wavelengths is disposed between the plurality of antenna units, the antenna units are arranged in array elements, and the quantity of array elements is 2 to thousands. The antenna array is integrated on the back of the chip, and the radio frequency front end device is integrated under the antenna array. In the present invention, the antenna array and the radio frequencyfront-end device are integrated in the same chip package, so that path loss is reduced and device placement space is saved.

Description

technical field [0001] The invention relates to the field of 5G mobile communication, in particular to an electronic device integrating an antenna array, a radio frequency front-end device and a chip. Background technique [0002] At present, as the commercial use of 5G (fifth-generation mobile communication) is getting closer and closer to us, the application of millimeter wave in mobile communication equipment has also received more attention. Millimeter waves refer to electromagnetic waves with a wavelength of 1mm to 10mm, that is, electromagnetic waves with a frequency of 30 to 300 GHz (such as 28 GHz, 37 GHz, 39 GHz, etc., in which the frequency is around 60 GHz, which is a license-free frequency band), and its available bandwidth is much larger than the currently used sub 6 GHz Microwave band. According to Shannon (Shannon) theorem, the relationship between channel capacity Rmax and channel bandwidth W, signal-to-noise ratio S / N is: Rmax=W*log2(1+S / N). Therefore, wid...

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Problems solved by technology

[0003] However, due to the short wavelength, the propagation attenuation in the channel is faster, and the diffraction ability is extremely weak, so it is usually used for line-of-sight (LOS) communication

Using the conventional single antenna form, or increasing the number of antennas with MIMO technology, can no longer solve this problem

The common form of antenna array can increase the transmission distance due to the high main lobe gain and narrow beam due to beamforming, but if the beam scanning cannot be realized, the signal will be sharply attenuated when the base station signal is not aligned with its main lobe

However, conventional patch antennas or microstrip antenna elements have low antenna gain and strong coupling between multi-antenna elements, which cannot meet the high gain requirements of millimeter waves.

[0004] At the same time, due to the high-frequency characteristics of millimeter waves, the circuit transmission line loss at the RF front-end needs to be reduced as much as possible. The traditional way of designing and processing antennas and functional modules separately and connecting them through high-frequency cables is no longer sufficient. The antenna array Integrated design with RF front-end is an urgent problem to be solved

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