Abstract
To meet the increasing need of high-data-rate and broadband wireless communication systems, the devices and its circuits R&D under Millimeter, Sub-Millimeter, or even Terahertz (THz) frequency bands are attracting more and more attention from not only academic, but also industrial areas. Most of the former research on the THz waveband (0.1–10 THz) antenna design is mainly focused on realizing high directional gain, such as horn antennas, even though the coverage area is very limited when comparing with the current Wi-Fi system. One solution for the horizontally omnidirectional communication antenna is using the structure of multiple split-ring resonators (MSRRs). Aiming at this point, a novel 300 GHz microstrip antenna array based on the dual-surfaced multiple split-ring resonators (DSMSRRs) is proposed in this paper. By employing the two parallel microstrip transmission lines, different MSRRs are fed and connected on two surfaces of the PCB with a centrally symmetric way about them. The feeding port of the whole antenna is in between the centers of the two microstrip lines. Thus, this kind of structure is a so-called DSMSRR. Based on the different size of the MSRRs, different or multiple working wavebands can be achieved on the whole antenna. Firstly, in this paper, the quasi-static model is used to analyze the factors affecting the resonance frequency of MSRRs. Simulation and measured results demonstrate that the resonant frequency of the proposed array antenna is 300 GHz, which meets the design requirements of the expected frequency point and exhibits good radiation characteristics. Then, a dual-band antenna is designed on the above methods, and it is proved by simulation that the working frequency bands of the proposed dual-band antenna with reflection coefficient below −10 dB are 274.1–295.6 GHz and 306.3–313.4 GHz.
Highlights
We provide a brief background on the terahertz communication
LMSRRs is the overall inductance of multiple split-ring resonators (MSRRs), which is formed by the metal ring induct ance connected in series according to the current direction
Design of the 300 GHz Microstrip Array Antenna antenna is composed of four MSRRs symmetrically printed on the front and back of the To increase antenna coverage area, this paper proposes an array antenna
Summary
We provide a brief background on the terahertz communication. The frequency band of terahertz waves is defined as 0.1–10 THz. Array antenna is a kind of special antenna that obtains predetermined radiaunits is straightforward to adjust and can reach the terahertz frequency band It has been tion characteristics by regular or random arrangement of no less than two antenna elewidely researched and applied in many fields, such as filters [9,10], antennas [11], and ments. The electromagnetic a novel dual-band microstrip antenna is proposed by the above method, and the simulasimulation software Altair Feko is used to analyze the influence of the antenna’s key size tion software is used toresonance optimizefrequency, the analysis the two of the resonance parameters on its so asfrom to optimize it.aspects. A novel dual-band microstrip antenna is proposed by the above method, and the simulation software is used to optimize the analysisof from the two aspects of resonance frequency and
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