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Maximum Power Transfer01:16

Maximum Power Transfer

263
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
263

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High Gain Flat-Panel mmWave Antenna Array.

Seong-Mo Moon1, Junhyuk Cho2, Han Lim Lee2

  • 1Satellite Payload Research Section, ETRI, Daejeon 34129, Republic of Korea.

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|December 9, 2023
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Summary

This study presents a novel flat-panel antenna array for millimeter wave (mmWave) communication, achieving high directivity and gain without extra layers. The developed 4x4 array demonstrates a peak gain of 21.3 dBi at 28.5 GHz for the n257 band.

Keywords:
flat-panel antenna arrayhigh gain antennammWave antennammWave antenna array

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Area of Science:

  • Electrical Engineering
  • Antenna Theory
  • Wireless Communication

Background:

  • Millimeter wave (mmWave) communication demands efficient chip-antennna integration.
  • Planar antenna arrays are crucial for compact mmWave systems.
  • High directivity and gain are essential for robust mmWave connectivity.

Purpose of the Study:

  • To introduce a novel flat-panel antenna array for mmWave applications.
  • To achieve high directivity and augmented gain without superstrate layers.
  • To validate the performance of the proposed antenna array for the n257 band.

Main Methods:

  • Design and simulation of a 4x4 flat-panel antenna array at 28 GHz.
  • Fabrication and measurement of the array and its standalone element.
  • Integration with a 1x16 mmWave feed network for comprehensive testing.

Main Results:

  • The standalone array element achieved a 20.6% bandwidth centered at 28.5 GHz.
  • The 4x4 array demonstrated a peak gain of 21.3 dBi at 28.5 GHz.
  • A half power beamwidth of 15° and gain variation < 3 dB were recorded.

Conclusions:

  • The novel flat-panel antenna array offers high directivity and gain for mmWave systems.
  • The design eliminates the need for additional superstrate layers, simplifying integration.
  • The validated performance confirms its suitability for 5G mmWave applications like the n257 band.