THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS TECHNICAL REPORT OF IEICE

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1 THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS TECHNICAL REPORT OF IEICE morisaka@ec.ee.es.osaka-u.ac.jp, {shiomi,okamura}@ee.es.osaka-u.ac.jp 2.665GHz , Active Fased Array Antenna by Dual Feed Patch Antenna Shinnichi MORISAKA, Hidehisa SHIOMI, and Yasuyuki OKAMURA Graduate School of Engineering Science,Osaka Universitry 1-3 Machikaneyama cho, Toyonaka shi, Osaka, Japan morisaka@ec.ee.es.osaka-u.ac.jp, {shiomi,okamura}@ee.es.osaka-u.ac.jp Abstract This paper describes fablication of Active Fased Array Antenna and evaltuation of characteristic.that antenna is active fased array antenna that consist of copled oscillator, injected signal, and controll each oscillator s phase by utilization of syncronize phenomenoma. In this paper,fased array antenna that consist of oscillator coupled by dual-feed-patch-antenna is proposed. Patch antenna works as also radiator.proposed antenna worked in 2.665GHz.By 29 degree of fase differnce of injection signal,a direction of main beam tilted 1.2 degree. Key words ActiveArrayAntenna,DualFeed-PatchAntenna 1. [ ] [ ] 1

2 Injection Singnal PatchAntenna Asin(ƒÖt ) -Asin(ƒÖt + ƒó) Oscillator 1 Fig. 1 Structure of proposed active fased array antenna E z Port 1 Port 2 2 Fig. 2 dual-feed patch antenna 1 25Ω 2 25Ω Table 1 Parameter of Micro Strip Line Z, Z 1 5,25,, 3λ g /4, λ g /4, λ g /2 Asin(ƒÖt ) arg( ) - arg( ) = 9 -Asin(ƒÖt ) 3 φ= 5 Fig. 3 Current distribution when φ= λ g 1:3 λ g/2 Me j Me jƒó/4 Me j2ƒó/4 Me j3ƒó/4 Me jƒó 25 Asin(ƒÖt ) λ g/2 25 -Asin(ƒÖt + ƒó) 4 Fig. 4 fased array 2

3 2.3865GHz = λ g/2 VDP GHz VDP V VDP V Table 2 Parameter of array antenna φ S/m φ.8mm 28.mm 46.34mm VDP 2.363GHz 3. VDP L C v L C Fig. 6 VDP i VDP R 1 5. R GHz V 3. 2 VDP V φ nS Maxwell FDTD [ ] FDTD Fig. 7 Number of port of patch antenna FDTD FDTD FET 25 6 VDP 5 2 VDP i-v 5 v = R 1 i + R 3 i 3 (1).V dB 2.597GHz±1MHz 3

TopView SideView Asin( Öt ) VDP = 5 = 25 = 3 Ég /4 = É g /4 -Asin( Öt + Ó) = É g /2 図 5 シミュレーションモデル Fig. 5 simulation-model 28.mm 46.3448mm 1.6dBm 1.6dBm 28.

4 TopView SideView Asin( Öt ) VDP = 5 = 25 = 3 Ég /4 = É g /4 -Asin( Öt + Ó) = É g /2 図 5 シミュレーションモデル Fig. 5 simulation-model 28.mm mm 1.6dBm 1.6dBm 28.mm Î { Ó LineStrecher SG 図 12 試作したアクティブフェーズドアレイアンテナ Fig. 12 Manufactured Active Fased Array Antenna φ = Deg. φ = 4.1 Deg. 5 Phase [ Deg. ] 6 Vpltage [ V ] ψ ψ ψ 1+18 ψ ψ Port Port 図9 位相分布 Fig. 9 Distribution of phase 図8 振幅分布 Fig. 8 Distribution of amplitude 4. 2 アレイアンテナの試作図 12 に試作したアレイアンテナの写真を示す強制信号はシグナルジェネレータから供給しているシグナルジェネレー -8-4

5 Spectrum Analizer 5ƒ 4.36mm 5ƒ 25ƒ 5.8mm D G S 2.65mm 5ƒ 4.36mm DrainBias 1 Fig. 1 Oscillator GateBias Short 12nH 1pF 6.8nF 1pF 2.2nH φ = Deg φ = 29 Deg Output (SpeAna) [ dbm ] Drain Bias [ V ] Fig Output of oscillator φ 2.6GHz 2.6GHz mm Fig. 14 Radiation Pattern - near boaside V V 1.33V dBm 1.6dBm GHz 1 2.6GHz Fig. 13 Radiation Pattern φ = Deg φ = 29 Deg 5

6 Theory Measured Fig. 15 -φ=deg compare with theory-φ=deg Fig. 16 -φ=29deg compare with theory-φ=29deg [1] FDTD [2]