Microstripline‐fed half‐cylindrical dielectric resonator antenna for 2.4‐GHz WLAN application

Abstract

In summary, we have demonstrated for the first time a gainclamped RFA using a pair of circulators for loss and dispersion compensation. The amplifier configuration utilizes a counter-propagating pump scheme at 1465 nm. The lasing-wavelength direction is designed to propagate in the opposite direction to that of the signal propagation. The gain-clamping level is controlled by adjusting the VOA attenuation. The proposed gain-clamped discrete-RFA produces good gain-and noise-figure variations of less than 0.4 and 0.5 dB, respectively. The NF penalty occurs in the proposed configuration is caused by the pump-signal RIN transfer. The stronger the gain-clamping effect, the stronger the laser oscillating the cavity. Thus, the interaction between the lasing wavelength and pump lights becomes stronger, thus creating additional noise within the signal band. This impairment must be considered when designing a gain-clamped discrete RFA in a ring cavity.ABSTRACT: A compact half-cylindrical dielectric resonator antenna (DRA) made from a high-permittivity ( r ϭ 69) ceramic material is investigated. A microstrip transmission line excites the DRA. The DRA shows broad and stable radiation characteristics across a matching band of 2.32 to 2.5 GHz with peak gains of 5.5 dBi in the elevation plane and 3.6 dBi in the azimuth plane. The results lead us to propose this DRA for 2.4-GHz WLAN (2.4 to 2.484 GHz) application.

Dielectric resonator antennas: An application oriented survey

“…A 5 GHz‐to‐6 GHz WLAN DRA with 20% impedance bandwidth has been reported by Rashidian et al Also Alipour et al have proposed a compact DR‐antenna for both WLAN and HIPERLAN (High‐Performance Radio LAN) within reasonable gain and bandwidth, followed by two segments rectangular DRA with 19% and 17.5% impedance bandwidth to WLAN system specification. Kumar et al, have discussed a compact half‐cylindrical type 2.4 GHz WLAN dielectric resonator antenna.…”

“…For the ease of communication, different wireless master devices have come up in the market with improved characteristics dedicated to specific client devices. For the media of electromagnetic radiation, DRA has been proposed and perceived as an effective radiator for different master/client devices like Hiper LAN, WLAN, Wi‐Fi, WiMAX, mobile devices, etc., which are being sequentially discussed in this section . An inclusive compressed sketch of DRA devices for modern communication technologies is shown in Figure .…”

“…The maximum available literature have been categorized in four separate sections like; DRA for microwave band applications, specific frequency based DRA application, technology‐based DRA application, millimeter‐wave‐based DRA application, respectively. But some articles are still not covered in these sections and felt by the authors to be discussed in a separate section from their application, novelty, and importance point of view.…”