Compact QMSIW-based antenna with different resonant frequencies depending on loading of metalized vias

Abstract

In this work, simple, low profile, compact quarter-mode substrate-integrated waveguide (QMSIW)-based antennas are proposed for Wireless Local Area Network (WLAN) at 5.2/5.5 GHz and Wireless Body Area Network (WBAN) at 5.8 GHz, respectively. By implementing QMSIW technique, the electrical size of the antenna is reduced up to 1/4th of the conventional circular SIW cavities. Thanks to the quarter mode concept, the antenna size is reduced significantly by preserving its dominant mode. The resonant frequency of the dominant mode TM010 is independently tuned at 5.2, 5.5, and 5.8 GHz after loading the QMSIW cavity with metalized via holes, subsequently. The on-body performance of the antenna is verified on pork tissues at 5.8 GHz and it is found to be insensitive with respect to surroundings. The measured gain and simulated efficiency of the proposed antenna at 5.8 GHz in free space are 4.8 dBi and 92%, while in the proximity of pork tissues values are 3.25 dBi and 57%, respectively. Moreover, the measurement results demonstrate a good matching with the simulation results.

Dual-Band Quarter Mode SIW Cavity Back Slot Antenna

“…The peak gain has slightly deviated from the boresight direction in QMSIW antennas which were discussed in [1][2][3][4][5][6][7][8] as most of the energy is coupled from the dielectric aperture.…”

“…A compact QMSIW antenna with L-shaped slot using TM 101 mode [7] is proposed. Shunt metallic via loaded QMSIW antenna [8] is proposed for WBAN applications. Here, fine-tuning of frequency is achieved by increasing the number of shunt-metalized via.…”

“…A QMSIW textile antenna with two rectangular slits [9] is proposed. Antennas proposed [7][8][9] are excited by co-axial feeding technique and QMSIW is realized from circular cavity resonators. In order to reduce the number of antennas in a hand-held device, dual-band antennas are the highest demand.…”

Substrate integrated waveguide‐based simultaneous transmit and receive antenna for full‐duplex wearable devices

“…The authors of 13 reported a textile-SIW for WBAN applications. Similarly, the authors of [14][15][16] used Quarter-mode SIW cavities for designing SIW-based wearable antennas. In, 17 the authors used a leather substrate for developing a triple-band WBAN antenna.…”

A substrate integrated waveguide (SIW) based self-quadruplexing antenna for Ku-band applications

“…The substrate integrated waveguide (SIW) based antennas have emerged recently to address the shortcomings of the conventional printed self-multiplexing antennas. SIW based cavitybacked antennas provide high gain, high FTBR, high power handling capability [5,6], and easy circuit integration. Many attempts have been made in recent literature to develop effective self-diplexing and self-triplexing antennas [7][8][9][10].…”