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題名 | 2.4 GHz Circular-Polarization LNA Receiving-Type and PA Transmitting-Type Active Patch Antennas for ISM Band Wireless Communications=應用在ISM頻帶無線通訊之2.4GHz低雜訊放大器-接收/功率放大器發射型圓形極化主動微帶天線的設計 |
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作者 | 林信雨; 莊惠如; Lin, Sin-yue; Chuang, Huey-ru; |
期刊 | Journal of the Chinese Institute of Electrical Engineering |
出版日期 | 19980500 |
卷期 | 5:2 1998.05[民87.05] |
頁次 | 頁167-173 |
分類號 | 448.813 |
語文 | eng |
關鍵詞 | 無線通訊; 圓形極化主動微帶天線; 低雜訊放大器; 功率放大器; 2.4 GHz ISM-Band; Wireless communication; Circular-polarization active patch antenna; Low-noise amplifier; LNA; Power amplifier; PA; |
中文摘要 | 本論文主要探討應用在2.4-GHz無線通訊之放大器型圓形極化主動微帶天線之設計 製作,主動微帶天線分為主動電路及輻射微帶天線兩部份。其中主動放大電路是低雜訊放大 器 (20-dB 增益及 2.8-dB 雜訊指數 ) 或功率放大器 (20-dB 增益及 20-dBm 輸出功率 ) ; 圓形極化天線係用 Lange 耦合器及兩正交輸入之正方形微帶天線構成,吾人使用頻域電 場積分方程數值方法來準確求出微帶天線的尺寸以及饋入點的位置,並計算出微帶天線駐波 比、電流分佈及輻射場型。 最後設計製作結合 Lange 耦合器之半平衡型放大電路,並與微 帶天線整合成圓形極化發射型及接收型主動微帶天線。 |
英文摘要 | This paper presents the design, implementation, and measurement of amplifier-type circular-polarization (CP) active patch antennas for 2.4 GHz ISM-band wireless communication applications. The RF amplifier can be a low-noise amplifier (LNA) (23-dB gain and 2.8-dB noise figure) for receiving or a power amplifier (PA) (about 20-dB gain and 20-dBm output power) for transmitting at 2.4 GHz ISM-band. Using a Lange-coupler for two orthogonal feeds creates a 2.4 GHz circular-polarized square patch antenna. The spectral-domain electric field integral equation (SD-EFIE) technique is employed to accurately determine the patch antenna dimension, the antenna input SWR, current distribution, and radiation patterns. Finally, the semi-balanced amplifiers (by using PAs or LNAs) are designed and integrated with the patch antenna to form a transmitting or receiving type circularly-polarized active microstrip antenna. The patch-antenna/amplifier modules are fabricated on two FR-4 substrates with the ground planes soldered together. Compared with the stand-alone patch antenna, the combined patch-antenna/amplifier module has a much wider bandwidth. Potential applications of CP active patch antennas include basestation antennas of ISM-band cordless telephones or wireless local area networks (WLAM). |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。