Antennes réalisées

en impression 3D

22 MARS 2018

JM Floc’h

Sommaire

• Introduction - Généralités

• Contexte des Etudes

• Travaux de l’IETR

– Antennes large bandes

– Antennes pour capteur à 24 GHz

– Conclusion

Introduction - Généralités

• Il y a de plus en plus d’applications en impression 3D avec différents types de technologie

• Nous avons choisi des applications faible coût par addition

• La réalisation est rapide

• Les antennes obtenues sont légères et robustes

• On peut réaliser des formes complexes

Antenne large bande

• Transmission de video en temps réel

• Réseau composé de 4 antennes large bande

• adaptation des communications aux réseaux existants dans l’environnement

(3G, 4G, WiFi / WiMax, Inmarsat, RF)

• Utilisation de ces réseaux simultanémant

• aggregation à ces réseaux pour avoir le meilleur service (débit)

• Le choix du réseau se fait de façon automatique en fonction de la disponibilité, de la vitesse et de la qualité de chaque réseau

Multilink Projet

Structure de l’antenne

Structure de l’antenne

Figure 1: Proposed antenna configuration obtained from a

monopole antenna.

Figure 4: Photograph of the manufactured prototype of the

antenna.

20 cm

Figure 2: The proposed antenna.

R1

R2

R3

R2

D

0.1 cm

X

Y

(a) (b)

xsc

ysc

Figure 3: Antenna parameters to be optimized for provided

performance. (a) Global view, (b) Top view. For clarity the

ground plan was been deleted.

and two folded ellipses. To feed this antenna, a coaxial feed

line with input impedance of 50 Ohm is used.

In order to obtain the desired performance of the antenna, a

parametric study is made by optimizing geometrical

dimensions including the position of the pin to short-circuit the

antenna as show in the Fig. 3. In the table I, the value of each

parameter is given.

Parameter Optimized value

(cm)

R1 2.0500

R2 2.5625

R3 1.0250

D 7.8000

xsc 0.5600

ysc 2.5000

Table I: Optimized antenna parameters.

In the present work, we propose a modern manufacturing

process to fabricate the designed antenna. This process is based

on the recent development that knows the 3D printing

technology. So, firstly the prototype of the antenna is

fabricated on resistible plastic material namely Acrylonitrile

Butadiene Styrene (ABS) by a 3D printer and next a silver

printing metallization layer is applied on the fabricated

prototype in order to obtain a radiated element of the designed

antenna. This technique allows obtaining a very light weight

antenna.

III. XPERIMENTAL ESULTS AND ISCUSSION

To verify the performance of the designed compact and

broadband antenna presented in this paper, a prototype was

manufactured by means of 3D printer and then measured. In

the Fig. 4 can be see the photograph of the antenna prototype.

For the purpose of measurement, the antenna is connected to a

coaxial cable in the middle section of the ground plane. The

measured return loss of the antenna is presented in the Fig. 5.

As it can be see, a good agreement between measured and

simulated results can be observed. Also, it is clearly seen that a

wide operating bandwidth is obtained covering the GSM band

(900-1900 MHz), UMTS band (1900-2200 MHz) and the

highly demanded LTE band (2300-2700 MHz). The

compactness and wide bandwidth in the antenna is suitable for

many applications as mobile communications and wireless

applications.

Structure de l’antenne

Figure 1: Proposed antenna configuration obtained from a

monopole antenna.

Figure 4: Photograph of the manufactured prototype of the

antenna.

20 cm

Figure 2: The proposed antenna.

R1

R2

R3

R2

D

0.1 cm

X

Y

(a) (b)

xsc

ysc

Figure 3: Antenna parameters to be optimized for provided

performance. (a) Global view, (b) Top view. For clarity the

ground plan was been deleted.

and two folded ellipses. To feed this antenna, a coaxial feed

line with input impedance of 50 Ohm is used.

In order to obtain the desired performance of the antenna, a

parametric study is made by optimizing geometrical

dimensions including the position of the pin to short-circuit the

antenna as show in the Fig. 3. In the table I, the value of each

parameter is given.

Parameter Optimized value

(cm)

R1 2.0500

R2 2.5625

R3 1.0250

D 7.8000

xsc 0.5600

ysc 2.5000

Table I: Optimized antenna parameters.

In the present work, we propose a modern manufacturing

process to fabricate the designed antenna. This process is based

on the recent development that knows the 3D printing

technology. So, firstly the prototype of the antenna is

fabricated on resistible plastic material namely Acrylonitrile

Butadiene Styrene (ABS) by a 3D printer and next a silver

printing metallization layer is applied on the fabricated

prototype in order to obtain a radiated element of the designed

antenna. This technique allows obtaining a very light weight

antenna.

III. XPERIMENTAL ESULTS AND ISCUSSION

To verify the performance of the designed compact and

broadband antenna presented in this paper, a prototype was

manufactured by means of 3D printer and then measured. In

the Fig. 4 can be see the photograph of the antenna prototype.

For the purpose of measurement, the antenna is connected to a

coaxial cable in the middle section of the ground plane. The

measured return loss of the antenna is presented in the Fig. 5.

As it can be see, a good agreement between measured and

simulated results can be observed. Also, it is clearly seen that a

wide operating bandwidth is obtained covering the GSM band

(900-1900 MHz), UMTS band (1900-2200 MHz) and the

highly demanded LTE band (2300-2700 MHz). The

compactness and wide bandwidth in the antenna is suitable for

many applications as mobile communications and wireless

applications.

Figure 1: Proposed antenna configuration obtained from a

monopole antenna.

Figure 4: Photograph of the manufactured prototype of the

antenna.

20 cm

Figure 2: The proposed antenna.

R1

R2

R3

R2

D

0.1 cm

X

Y

(a) (b)

xsc

ysc

Figure 3: Antenna parameters to be optimized for provided

performance. (a) Global view, (b) Top view. For clarity the

ground plan was been deleted.

and two folded ellipses. To feed this antenna, a coaxial feed

line with input impedance of 50 Ohm is used.

In order to obtain the desired performance of the antenna, a

parametric study is made by optimizing geometrical

dimensions including the position of the pin to short-circuit the

antenna as show in the Fig. 3. In the table I, the value of each

parameter is given.

Parameter Optimized value

(cm)

R1 2.0500

R2 2.5625

R3 1.0250

D 7.8000

xsc 0.5600

ysc 2.5000

Table I: Optimized antenna parameters.

In the present work, we propose a modern manufacturing

process to fabricate the designed antenna. This process is based

on the recent development that knows the 3D printing

technology. So, firstly the prototype of the antenna is

fabricated on resistible plastic material namely Acrylonitrile

Butadiene Styrene (ABS) by a 3D printer and next a silver

printing metallization layer is applied on the fabricated

prototype in order to obtain a radiated element of the designed

antenna. This technique allows obtaining a very light weight

antenna.

III. XPERIMENTAL ESULTS AND ISCUSSION

To verify the performance of the designed compact and

broadband antenna presented in this paper, a prototype was

manufactured by means of 3D printer and then measured. In

the Fig. 4 can be see the photograph of the antenna prototype.

For the purpose of measurement, the antenna is connected to a

coaxial cable in the middle section of the ground plane. The

measured return loss of the antenna is presented in the Fig. 5.

As it can be see, a good agreement between measured and

simulated results can be observed. Also, it is clearly seen that a

wide operating bandwidth is obtained covering the GSM band

(900-1900 MHz), UMTS band (1900-2200 MHz) and the

highly demanded LTE band (2300-2700 MHz). The

compactness and wide bandwidth in the antenna is suitable for

many applications as mobile communications and wireless

applications.

Réalisation métallique

L’antenne est réalisée à partir de 2 feuilles de laiton

On les plie et soude ensemble

On vient ensuite souder le court circuit

Réalisation 3D

On obtient directement le fichier mécanique à partir du logiciel CST en format stp

Il faut avant épaissir à 1 mm l’épaisseur de métallisation

Réalisation en 3D

On utlise des fils d’ABS

Métallisation

Une possibilité est d’utiliser une peinture d’argent

L’antenne est avant collée sur le plan de masse

Métallisation

La métallisation est réalisée par électrolyse de cuivre

Adaptation

S11

Figure 5: Measured return loss of the manufactured antenna

compared with simulation result.

Gain, dB

(a)

Gain, dB

(b)

Gain, dB

(c)

Gain, dB

(d)

Figure 8: Simulated radiation pattern of the proposed antenna in

different frequencies. (a) at the 0.7 GHz, (b) at the 0.96 GHz, (c)

at the 2 GHz and (d) at the 2.7 GHz.

Figure 6: Measured gain of the proposed antenna.

Figure 7: Measured radiation efficiency of the proposed antenna

compared with the simulated result.

The measured value for the peak gain at the desired

frequency bands of (700�2700 MHz) is exhibited in Fig. 6. In

the other hand, the measured and simulated antenna efficiency

are also depicted in Fig. 7, featuring good agreement between

the measured and simulated results. It can be seen that the

antenna efficiency is higher than 50% in the lower band and

reaches 70% in the higher band.

The radiation patterns of the simulated and measured

antenna at different frequencies are plotted in the Fig. 8 and

Fig. 9 respectively. For the GSM band, UMTS band and LTE

band the radiation pattern of the proposed antenna is

suite

Gain et efficacité

Figure 5: Measured return loss of the manufactured antenna

compared with simulation result.

Gain, dB

(a)

Gain, dB

(b)

Gain, dB

(c)

Gain, dB

(d)

Figure 8: Simulated radiation pattern of the proposed antenna in

different frequencies. (a) at the 0.7 GHz, (b) at the 0.96 GHz, (c)

at the 2 GHz and (d) at the 2.7 GHz.

Figure 6: Measured gain of the proposed antenna.

Figure 7: Measured radiation efficiency of the proposed antenna

compared with the simulated result.

The measured value for the peak gain at the desired

frequency bands of (700�2700 MHz) is exhibited in Fig. 6. In

the other hand, the measured and simulated antenna efficiency

are also depicted in Fig. 7, featuring good agreement between

the measured and simulated results. It can be seen that the

antenna efficiency is higher than 50% in the lower band and

reaches 70% in the higher band.

The radiation patterns of the simulated and measured

antenna at different frequencies are plotted in the Fig. 8 and

Fig. 9 respectively. For the GSM band, UMTS band and LTE

band the radiation pattern of the proposed antenna is

Figure 5: Measured return loss of the manufactured antenna

compared with simulation result.

Gain, dB

(a)

Gain, dB

(b)

Gain, dB

(c)

Gain, dB

(d)

Figure 8: Simulated radiation pattern of the proposed antenna in

different frequencies. (a) at the 0.7 GHz, (b) at the 0.96 GHz, (c)

at the 2 GHz and (d) at the 2.7 GHz.

Figure 6: Measured gain of the proposed antenna.

Figure 7: Measured radiation efficiency of the proposed antenna

compared with the simulated result.

The measured value for the peak gain at the desired

frequency bands of (700�2700 MHz) is exhibited in Fig. 6. In

the other hand, the measured and simulated antenna efficiency

are also depicted in Fig. 7, featuring good agreement between

the measured and simulated results. It can be seen that the

antenna efficiency is higher than 50% in the lower band and

reaches 70% in the higher band.

The radiation patterns of the simulated and measured

antenna at different frequencies are plotted in the Fig. 8 and

Fig. 9 respectively. For the GSM band, UMTS band and LTE

band the radiation pattern of the proposed antenna is

suite

Diagramme en 3 D à 700 MHz (simulation et mesure)

suite

Diagramme en 3 D à 960 MHz (simulation et mesure)

suite

Diagramme en 3 D à 2000 MHz (simulation et mesure)

suite

Diagramme en 3 D à 2700 MHz (simulation et mesure)

Conclusion

• Conception d’une antenne large bande pour LTE 700 et

2700, GSM 900 and 1800, UMTS

• Réalisation avec une imprimante 3D faible cout

• Réalisation directe à partir de fichier stp issu de CST

• Métallisation avec de la peinture argent ou par dépot de

cuivre

• Bonnes performances en gain et efficacité

• Bonnes comparaisons entre la mesure et la simulation

• Facile et rapide à réaliser (antenne très légère)

J.M. Floch, B. El Jaafari, A. El Sayed Ahmed

« New Compact Broadband GSM/UMTS/LTE Antenna Realised by 3D Printing»

EUCAP 2015, Lisboa 13 – 17 april 2015

Produit d’AVIWEST