A 42-GHz Wideband Cavity-Backed Slot Antenna with Thick Ground Plane

Abstract

We investigate the characteristics of a wideband and high‐gain cavity‐backed slot antenna in terms of the reflection coefficients, radiation patterns, and gain. A cavity‐backed slot antenna structure includes baffles, reflectors, and thick ground planes. The measured gain and bandwidth of a 10‐dB return loss in a cavity‐backed 2 × 2 array slot antenna with h1=2 mm, d = 2 mm are 15.5 dBi and nearly 27% respectively, at 42 GHz. Baffles and reflectors are used to increase antenna gain, thus reducing the coupling among the slots on the thick ground plane.

Novel ′′buried‐on‐wall′′ 900 MHz cavity‐backed slot antenna with circular polarization

“…For this application, we present a promising printed compact S-shaped monopole antenna for penta-band operation. This antenna is a low-profile internal monopole antenna [3][4][5][6][7][8][9], and moreover, is uniplanar in structure, allowing it to fabricate at low cost, and also compact in its occupied volume inside the mobile phone. Detailed design considerations of the antenna are described, and results of the fabricated prototype are presented and discussed.…”

“…In addition, when the slot is cavitybacked, the so-called cavity-backed slot (CBS) antenna can provide unidirectional radiation to just one side of the antenna and reduce the effects of medium behind the cavity [4,5], which is very suitable for the above-mentioned applications. In this article, we focus on designing a CBS antenna operating at 900 MHz band for these applications.…”

Double‐ridged horn antenna for millimeter‐wave applications

“…However, the rapid development for millimeter-wave applications has prompted the design of antennas [3,4]. Therefore, to accomplish an effective measurement of antennas operating above 18 GHz, a broadband horn antenna for millimeter-wave applications should be developed.…”

Broadband transition between microstrip line and WR15 rectangular waveguide using low‐temperature cofired ceramic process

“…As LANs shift from Fast Ethernet (100 Mbit s À1 ) to Gbit Ethernet and 10 Gbit Ethernet, the increase of the informational capacity of MM fibers becomes critical. This increase may be accomplished by increasing the width of MM fiber baseband (fibers with index profiles matched to the laser sources such as Corning InfiniCor V R SX þ or adaptive electrical equalization of MM fiber frequency response [1]). Alternatively, one can shift the transmission beyond the baseband using subcarrier multiplexing (SCM) [2,3].…”

“…As communication systems adopt millimeter-wave frequencies, an increasing number of carriers will need to apply to transceiver modules a waveguide-type antenna [1] that is easily produced and has good-gain characteristics. As RF BPF [2] or LNA [3] in the form of MMIC used for these systems requires planar-type transmission lines generally similar to microstrip lines, what is required to connect a waveguide-type antenna with signals is a microstrip-to-waveguide transition, converting microstrip signals into waveguide signals.…”