Design of self‐quadruplexing antenna using substrate‐integrated waveguide technique

Abstract

A low-profile cavity-based self-quadruplexing antenna (SQA) is projected by using substrate-integrated waveguide (SIW) technology for multiband wireless communications. Four quarter-mode-like SIW-based cavity resonators are used for radiation and each resonator is fed individually by four distinct printed feed lines. The proposed antenna topology offers four resonant frequencies around 3.5, 5.2, 5.5, and 5.8 GHz band when excited by the corresponding feed. By appropriately adjusting the design essentials, an isolation around 23.6 dB is realized between any two input ports. Thus, four separate signals can coexist on a single antenna assembly without interfering each other, which help to realize the self-quadruplexing phenomenon. Finally, the antenna is prototyped and experimentally verified. The experimental results show good agreement with simulated counterparts. Moreover, the proposed design retains the advantages of a small footprint, compact size, low cost, and ease of manufacturing, which makes it a promising candidate for highly integrated handheld transceivers. K E Y W O R D S cavity antenna, quarter mode, self-multiplexed antenna, substrateintegrated waveguide (SIW)

SIW Based Cavity Backed Self-Quadplexing Slot Antenna

“…These cavities are fed by a 50 Ω microstrip feed line and generate dominant mode (TE110) and higher-order mode for a particular excited QM cavity simultaneously [20]. These working modes within the specific QM cavity are also generalized by equation (1) [18,23]. When port 1 is ON, i.e., QM cavity 1 is excited, it produces dominating mode at 5.95 GHz and higher-order mode (TE120) at 9.57 GHz.…”

A compact substrate integrated waveguide backed self‐quadruplexing antenna for C‐band communication

“…The proposed four‐port self‐quadruplexing antenna is compared with some published single port multiband/quad‐band 1‐3 and some self‐multiplexing 11‐13 and 14‐18 antennas in Table 2. Unlike other antennas, 1‐3 the self‐multiplexing antennas do not require external multiplexing circuit and allows independent frequency tuning.…”

“…Compared to other self‐di/triplexing antennas, 11‐16,20 the proposed self‐quadruplexing antenna seems improved in terms of size and antenna type. However, its size, isolation, and front‐to‐back ratio (FTBR) levels are improved than other self‐quadruplexing antennas 17,18 …”

“…However, to meet the future communication demand there is absolute need of a self‐multiplexing antenna. In this prospect, recently one self‐quadruplexing antenna 17,18 is reported in the literature, which can operate at four different frequencies simultaneously. However, design method for an all‐planar fed self‐quadruplexing antenna with improved port isolations and compact size is highly desirable.…”

Wideband Triple Resonance Patch Antenna for 5g Wi-Fi Spectrum

“…For the new generation of communication systems, microstrip patch/planar antennas have been commonly functional in various mobile technologies due to their obvious advantages, i.e., costeffective manufacturing, light weight, low-profile configurations, and easy integration with active/passive electronic circuitry [1][2][3][4][5][6][7]. Additionally, 5G deployment is designed to provide fiber-like data rates, low latency, and high signal fidelity.…”