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Related Concept Videos

Capacitor With A Dielectric01:18

Capacitor With A Dielectric

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Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
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Characteristics of Series Resonant Circuit01:24

Characteristics of Series Resonant Circuit

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Series resonance occurs in a circuit containing inductive (L), capacitive (C), and resistive (R) elements connected sequentially. At the resonance frequency, the inductive and capacitive reactances are equal in magnitude but opposite in sign, effectively canceling each other. This causes the circuit's impedance is minimal, primarily determined by the resistance R. The resonant frequency of an RLC circuit is defined as:
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LC Circuits01:21

LC Circuits

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An LC circuit consists of an inductor and a capacitor, either in series or parallel. Consider a charged capacitor connected with an inductor in series. Before the switch is closed, all the energy of the circuit is stored in the electric field of the capacitor. When the switch is closed, the capacitor begins to discharge, producing a current in the circuit. The current, in turn, creates a magnetic field in the inductor. Because of the induced emf in the inductor, the current cannot change...
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Series Resonance01:17

Series Resonance

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The RLC circuit impedance is defined as the ratio of the supply voltage to the circuit current. Resonance in such a circuit occurs when the imaginary part of this impedance equals zero. This specific condition means that the inductive reactance is exactly equal to the capacitive reactance. The frequency at which this happens is known as the resonant frequency. Mathematically, the resonant frequency is inversely proportional to the square root of the product of the inductance (L) and capacitance...
322
Parallel Resonance01:23

Parallel Resonance

328
The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
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Mesh Analysis for AC Circuits01:12

Mesh Analysis for AC Circuits

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In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
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LTCC-Integrated Dielectric Resonant Antenna Array for 5G Applications.

Mohsen Niayesh1, Ammar Kouki1

  • 1Electrical Engineering Department, Ecole de Technologie Superieure (ETS), Montreal, QC H3C 1K3, Canada.

Sensors (Basel, Switzerland)
|June 2, 2021
PubMed
Summary

This study presents a novel millimeter-wave antenna array for 5G applications. The Low Temperature Cofired Ceramics (LTCC) based design achieves high gain and efficiency using a unique alignment superstrate.

Keywords:
array antennacorporate feeding networkdielectric resonant antenna (DRA)fifth generation (5G)low-temperature cofired ceramics (LTCC)millimeter wave (mm-Wave)multi-layered technology

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Electromagnetics

Background:

  • Millimeter-wave (mmWave) frequencies are crucial for 5G communication systems.
  • Dielectric resonator antennas (DRAs) offer advantages for mmWave applications due to their high efficiency and bandwidth.
  • Low Temperature Cofired Ceramics (LTCC) technology enables the integration of complex antenna structures.

Purpose of the Study:

  • To present a novel millimeter-wave dielectric resonator antenna array for 5G applications.
  • To integrate a feeding network and an alignment superstrate within an LTCC substrate.
  • To evaluate the performance of the proposed antenna array design.

Main Methods:

  • Design and fabrication of a 16-element cylindrical dielectric resonator antenna (CDRA) array operating at 28 GHz using LTCC technology.
  • Development of an integrated inverted microstrip corporate feeding network within the LTCC stack.
  • Introduction of a grooved and grounded superstrate for element alignment and performance enhancement.
  • Numerical simulations and experimental measurements for performance evaluation.

Main Results:

  • The antenna array achieved an impedance bandwidth of 9.81% centered at 28.72 GHz.
  • A maximum realized gain of 15.68 dBi was measured.
  • The antenna array demonstrated a high efficiency of 88%.
  • Measured results showed excellent agreement with simulation data.

Conclusions:

  • The proposed LTCC-based millimeter-wave antenna array with an integrated feeding network and novel superstrate is a viable solution for 5G applications.
  • The design effectively facilitates element alignment and enhances overall antenna performance.
  • The achieved gain, bandwidth, and efficiency validate the design's suitability for mmWave 5G systems.