A compact, single-layered substrate-integrated waveguide (SIW) filtenna with parasitic patch is synthesized and designed. half-mode rectangular cavity (HMSIRC) adopted as the first stage resonator to reduce circuit size. functioning last well radiator arranged closely HMSIRC so enhance operational bandwidth facilitate filtering performance. Two broadside radiation nulls are realized at both upper lower band-edges sharpen band-edge roll-off rate: one generated by interaction between patch,...

In this letter, a compact, low-profile, bandwidthenhanced, dual-cavity substrate integrated waveguide (SIW) filtenna is demonstrated. Two SIW cavities are stacked vertically on top of each other. A complementary split-ring resonator slot etched in the surface uppermost cavity, causing to act as patch antenna. The operational impedance bandwidth significantly enhanced by merging three resonances that arise from configuration. One introduced patch, and other two inherently generated cavities....

Compact, low-profile, linearly polarized (LP), and circularly (CP) patch-based filtennas are realized with a custom-designed coupling probe. It introduces deep null at both the lower upper band edges of filter response. These two nulls facilitate quasi-elliptic bandpass behavior can be independently controlled to achieve sharp band-edge skirts high out-of-band suppression levels. The CP version evolves from LP design by introducing T-shaped nearfield resonant parasitic (NFRP) element near...

In this communication, a compact vertically integrated full-duplex filtenna is developed by using common feeding and radiating substrate waveguide (SIW) cavities. A rectangular dual-mode SIW cavity, operating at its two orthogonal TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">120</sub> xmlns:xlink="http://www.w3.org/1999/xlink">210</sub> modes, first employed as the cavity to realize passbands. And then, square slot-loaded with so enhance...

In this communication, a single-layer, wideband, differential-fed filtering antenna with high selectivity is proposed. The developed possesses simple structure and consists of square patch, substrate integrated waveguide (SIW) cavity, pair symbiotic stepped impedance resonators (SSIRs), complementary split ring (CSRRs). SIW cavity formed sparse metalized posts embedded in the bandwidth can be broadened by merging TM10 mode excited electromagnetic energy escaping from posts, TE210 through...

A compact dual-band, differentially fed filtenna with wide bandwidth, high selectivity, and low cross-polarization is presented. It composed of a slot-loaded rectangular patch, two pairs shorting pins, pair novel differential coupling feedlines, defected ground structure (DGS). Good broadside radiation patterns an adjustable frequency ratio (FR) between its bands are realized. U-shaped slots loaded on the patch to enhance bandwidth lower passband. The DGS feedlines produce five out-of-band...

A low-profile single-layer half-mode substrate integrated waveguide (HMSIW) filtering antenna with compact circuit size is presented in this brief. The features simple structure and consists of a cavity (HMSIWC), shorted parasitic patch, folded defected ground (DGS) etched into the metallized plane. technology employed to reduce overall dimension design. patch HMSIWC, both operating at states, are coupled each other form second-order response. And also radiation null higher stopband...

A low-cost, flexible, uniplanar, electrically small, quasi-isotropic antenna with considerably simple structure is proposed and experimentally investigated in this letter. The composed of a pair driven striplines split-ring resonator (SRR) two extended strips on the same side substrate. equivalent electric magnetic dipoles generated by SRR could realize omnidirectional radiation patterns oriented to x- y-axis, respectively, nearly amplitude realized gains. With orthogonalized between...

A compact, wideband, planar filtenna with reconfigurable tri-polarization diversity is presented. The operating mechanisms of its bandpass filter and bandwidth enhancement are explained through a step-by-step design evolution. Its feed network consists three J-shaped probes, Wilkinson power divider, phase shifters. Reconfigurability achieved by integrating four pairs p-i-n (PIN) diodes into it. Three polarization-reconfigurable states: linear polarization (LP), left-hand circular (LHCP),...

Abstract In this paper, a single‐layer filtering antenna based on half‐mode patches is proposed. It consists of main driven patch and parasitic patch. A U‐shaped slot first etched the to generate new resonant mode radiation null simultaneously. Four pairs shorting pins are introduced raise its operating frequency near that slot, thus broadening impedance bandwidth (IBW). Additionally, introduce an extra half‐TM 10 null, significantly enhancing IBW upper‐edge selectivity antenna. prototype...

A compact, differential diplex filtenna (DDF) with common-mode (CM) suppression is presented. rectangular dual-mode patch developed that operates in both its TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</sub> mode and a reshaped xmlns:xlink="http://www.w3.org/1999/xlink">30</sub> to realize two passbands. Two capacitively loaded loop (CLL) resonators work at different frequencies are combined the enhance operational bandwidth provide...

An innovative single-layer, differentially fed triband filtenna is presented. It formed with a main patch, which consists of two interdigitated-coupled driven patches that are approximately mirror-symmetric and four parasitic patches. The strong coupling between the facilitates excitation TM <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$_{\mathbf {1,0}}$ </tex-math></inline-formula> , {1,2}}$ {1,4}}$...

Vertically polarized, omnidirectional- and endfire-radiating, bandwidth-enhanced, high efficiency, electrically small monopole filtennas are developed. Both designs attained by organically combining a coax-fed top-hat loaded with two hybrid quarter-wavelength open-end stubs shorting post. The serve functions. They produce radiation nulls at both the lower upper band edges to sharpen roll-off rate. Moreover, they facilitate appearance of an additional resonance without affecting original...

Abstract A compact dual‐band substrate integrated waveguide (SIW) filtenna is presented. dual‐mode SIW cavity, resonating at its fundamental mode TE 110 and high‐order 120 , which respectively dominate the lower upper passbands, employed as feeding cavity. After that, a slot‐loaded performing two half‐mode radiating cavities, perpendicularly arranged over cavity for purpose of expanding operational bandwidth also strengthening filtering response. Furthermore, metal posts are utilized to...

In wheat production, appropriate flowering time and ideal plant architecture are the prerequisites for high grain yield. Alternative splicing (AS) is a vital process that regulates gene expression at post-transcriptional level, AS events in have been found to be closely related grain-related traits abiotic stress tolerance. However, their biological roles regulating remain unclear. this study, we report TaNAK1 undergoes AS, producing three variants. Molecular characterization of its variants...

In this letter, a single-layer differentially-fed filtenna with controllable radiation nulls by utilizing substrate integrated waveguide (SIW) cavity and two patches is presented. The features simple geometry, consists of SIW cavity, square patches, couple complementary split ring resonators (CSRRs). resonating at their TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</sub> modes, are both collaborating the its TE...

Abstract In this letter, a single‐layer differential‐fed dual‐band filtering antenna for wireless local area network application is proposed. The proposed consists of square patch, and two pairs stepped impedance resonators (SIRs). lower operating passband realized by exciting the patch with pair differential ports. Then, SIRs connected radiating edge to introduce another resonance, thus forming upper passband. And radiation null simultaneously produced enhance frequency selectivity between...

This brief presents a wideband differential-fed filtering antenna with end-fire radiation characteristics. The proposed consists of <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\lambda $ </tex-math></inline-formula> /4 stepped impedance slot, dual-mode resonator, pair rectangular slots, microstrip line, and folded line. slot resonates at its first two odd modes exhibits under differential ports...

Abstract A compact low‐profile planar filtering antenna with an enhanced suppression level is presented in this paper. The has a simple structure, consisting of E‐shaped driving patch, shorted parasitic and defected ground structure (DGS). patch serves as effective radiator facilitates the response. horizontally arranged coupled through radiating edge. And radiation null extra in‐band resonance can be generated, which would simultaneously broaden impedance bandwidth improve level. In...

Abstract A compact single‐layer wideband filtering antenna with a simple structure is presented in this letter. It consists of rectangular driven patch, pair short‐circuited parasitic patches, and two pairs slots. patch employed to capacitively load at each radiating edge the enhance impedance bandwidth facilitate response. Based on arrangement, radiation null upper stopband generated due effect multipath coupling so as improve frequency selectivity. Moreover, slots are etched into produce...