THE INSTITUTE OF ELECTRONICS,INFORMATION AND COMMUNICATION ENGINEERS

TECHNICAL REPORT OF IEICE.

† † † † †

† †

† 921–8601 7-1

E-mail: †b6300526@planet.kanazawa-it.ac.jp

FSR BS

Reflectarray Antenna for Receiving of Satellite Broadcasting using the

resonant elements of patch-type and slot-type

Katsutoshi IKARASHI†, Yukihiro KOSHIMA†, Shigeru MAKINO†, Shin-ichi BETSUDAN†,

Tetsuo HIROTA†, Keisuke NOGUCHI†, and Kenji ITOH†

† Kanazawa Institute of Technology Ohgigaoka 7–1 Nonoichi Ishikawa 921–8601 Japan

E-mail: †b6300526@planet.kanazawa-it.ac.jp

Abstract In the conventional design, the evaluation parameters for phase error were provided, and the patch-type

reflectarray antenna was designed so as to decrease the phase error, but was not considered the influence of cross

polarization component. In this paper, the new evaluation parameter for the cross polarization component is pro-

vided, and the hybrid-type reflectarray antenna (mixed-type of patch-type and slot-type) is proposed. The validity

of design is verified by simulation.

Key words Reflectarray antenna, FSR, BS, Cross polarization component, Incident angle

1.

( )

FSR(Frequency Selective Reflector:

)

[1] FSR

FSR

[2]

FSR

[3]

12.0dB

[4]

— 1 —

Copyright ©201 by IEICE 4This article is a technical report without peer review, and its polished and/or extended version may be published elsewhere.

- 37 -

2.

2. 1

1 l

εr d w r 5

r

2

r TE TM

BS TE TM

Rco

Rco =1

2(RTM +RTE) (1)

RTE TE RTM TM

3 2 (1)

r

Δφ1 Δφ2

0.05mm

Δφ1 Δφ2

1

Fig. 1 Reflectarray antenna

2 r TE TM (

=40deg)

Fig. 2 Reflection phase of TE-wave and TM-wave vs.

ring radius r(incident angle θ=40deg)

3 r Rco (

θ=40deg)

Fig. 3 Reflection phase of Rco vs. ring radius r

(incident angle θ=40deg)

2. 2

2.65

l : 3.2mm, d : 13.0mm, w : 0.4mm

4 5

4 12.0GHz

1.6dB 5

12.0dB

4

Fig. 4 Measured value of gain(conventional design)

5 12.0GHz

Fig. 5 Radiation patterns (12.0GHz)

2. 3

Rcr

— 2 —- 38 -

Rcr =1

2(RTM −RTE)

= ejΦTM (1− ej(ΦTE−ΦTM )

2) (2)

(2) TE TM

ΦTE − ΦTM 3

(2) r TE TM

6 6 TE TM

Δφ3

Δφ1 Δφ2 Δφ3

6 r Δφ3( θ=40deg)

Fig. 6 Phase difference vs. ring radius r

(incident angle θ=40deg)

2. 4 FSR

7

7(a) FSR( )

7(b) FSR(

) 2 8

l ( =0

60deg) Δφ1 Δφ2 Δφ3

Δφ1 Δφ2

3.2mm Δφ3 3

l=2.0mm

l=1.6mm

7

Fig. 7 analysis models

8 l Δφ1,Δφ2,Δφ3

( θ=0 60deg)

Fig. 8 Δφ1,Δφ2,Δφ3 vs. thickness l of dielectric substrate

(incident angle θ=0 60deg)

2. 5 FSR

l Δφ1 Δφ2

l Δφ3 9 10

θ θ=0 30deg θ=40 60deg

θ=0 30deg θ=40 60deg

( 8 ) 9 Δφ1

Δφ2 l l

1.6mm

10 Δφ3 l

l=1.6mm

θ=0 30deg θ=40 60deg

Δφ3

9 l Δφ1,Δφ2

( θ=0 30deg, 40 60deg)

Fig. 9 Δφ1,Δφ2 vs. thickness l of dielectric substrate

(incident angle θ=0 30deg, 40 60deg)

10 l Δφ3

( θ=0 30deg, 40 60deg)

Fig. 10 Δφ3 vs. thickness l of dielectric substrate

(incident angle θ=0 30deg, 40 60deg)

— 3 —- 39 -

3.

3. 1

1

11

12

11(a) 12(a)

10deg

60deg

40deg

( 11(b))

-5.0dB ,

( 12(b)) -3.0dB

1

Table 1 Design parameters

Frequency f 12.0GHz

Relative permittivity εr 2.65

Thickness l of dielectric substrate 1.6mm

Period of elements d 13.0mm

Center of mirror surface (x,z) (252.57, -125.43)

Gradient of mirror surface θd 30.7deg

Ring width w

Patch 0.4mm

Slot 1.0mm

Ring radius r

Patch 0.4 6.1mm

Slot 1.0 5.5mm

11

Fig. 11 Analyzed value of aperture distribution of patch-type

12

Fig. 12 Analyzed value of aperture distribution of slot-type

3. 2

θb

θb=20 30deg

22deg 13

14

14(a)

10deg

14(b)

-3.0dB

-40dB

13

Fig. 13 Arrangement of designed resonant elements

14

Fig. 14 Analyzed value of aperture distribution of hybrid-type

— 4 —- 40 -

3. 3

2

15

16

15(a)

70deg

10deg ( 14(a))

16

-44.0dB -26.6dB 17.4dB

15 ( )

Fig. 15 Receive-side analyzed value of aperture distribution of

hybrid-type

16

( 12.0GHz)

Fig. 16 Radiation patterns of analyzed value

(transmission-side receive-side 12.0GHz)

4.

4. 1

17

17

Fig. 17 Measurement system

4. 2

18 18(a)

50deg

100deg 18(b)

-20dB

19

20 12.0GHz

2.8dB

2.3dB

18 ( )

Fig. 18 Measured value of aperture distribution of hybrid-type

— 5 —- 41 -

19 ( 12.0GHz)

Fig. 19 Radiation patterns (12.0GHz)

20

Fig. 20 Measured value of gain

5.

2

12.0GHz

2.8dB 2.3dB

[1]

(B) Vol. J-67-B No.4 pp.447-454 1984.

[2]

” FSR ”

AP2008-204 pp.91-95 2009.

[3] J. Huang J. A.Encinar Reflectarray antennas Wiley

New Jersey 2007.

[4]

”

” (B) vol.J95-B No9 pp.1114-1123

2012.

— 6 —- 42 -