In this paper, two miniaturized planar diplexers based on the substrate integrated waveguide (SIW) structure loaded by open complementary split-ring resonators (OCSRRs) are proposed. The working principle is based on the theory of evanescent mode propagation. The proposed SIW diplexers operate below the cutoff frequency of the waveguide. Both the complementary split-ring resonators (CSRRs) and ...

This research proposes a substrate-integrated waveguide (SIW) cavity sensor to detect several chemicals using the millimeter-wave frequency range. The frequency response of the presented SIW sensor is switched by filling a very small quantity of chemical inside of the fluidic channel, which also causes a difference in the effective permittivity. The fluidic channel on this structure is either e...

A comprehensive survey of the reconfigurable leaky-wave antennas (LWAs) is made in this paper. Beam-steering and unique radiating features LWA are highlighted particularly. Therefore, radiation mechanism different types LWA, including uniform, quasi-uniform, periodic, metamaterial LWAs discussed detail. The guiding structures for realizing LWAs, namely microstrip, waveguide, substrate integrate...

─ Antipodal linear tapered slot antenna (ALTSA) for 60 GHz communications is presented in this paper. To obtain a high gain, dielectric loading in addition to the corrugation structure is applied to the ALTSA. The use of substrate integrated waveguide (SIW) technology allows a highly efficient, compact and low cost planar design. The antenna is designed and simulated in an electromagnetic field...

In this paper, empirical relations for the evaluation of both the resonant frequency fr and the quality factor Q for the dominant TM010 mode of a circular substrate integrated waveguide (SIW) cavity resonator are proposed and validated. These formulas are based on well established analytical expressions valid for the case of circular metallic cavity resonator, in which an equivalent radius Req ...

A novel substrate integrated waveguide (SIW) adopting a leaky-wave antenna (LWA) for continuous beam scanning tri bands is presented. For (CBS), optimization of different parameters associated with the unit cell has been carried out. Apart from this, optimal impedance matching also obtained help characteristic waveguide. The proposed SIW LWA scans ?58° to + 59° along 14.50 dBi gain when frequen...

Substrate-integrated-waveguide (SIW) technology can eliminate the limitations associated with conventional rectangular waveguides, i.e., bulky structures and production complexity at higher frequencies. Moreover, SIW replaces microstrip eliminating drawback of excessive radiation leakage power dividers are key elements in antenna array synthesis. A divider’s design procedures more complicated t...

This research proposes a compact indirect slot-fed wideband patch array antenna for missile seeker application. The proposed single consists of three dielectric layers radiator, an air substrate-integrated waveguide (SIW) cavity, and feeding network. rectangular is used as radiator on the first substrate layer, SIW cavity (ASIWC) employed to obtain high directivity low mutual coupling character...

Received Jun 12, 2014 Revised Aug 20, 2014 Accepted Aug 26, 2014 The present paper highlights an innovative broadband millimeter-wave single balanced diode mixer which is designed using a newly designed 90 substrate integrated waveguide (SIW) coupler and two cavities (SIW) filter. The mixer covers RF/LO operating frequency range which fluctuates between 10 to 12 GHz and IF port covers 2GHz. The...