This work presents the design of an additively manufactured W-band bandpass filter and a subtractively diplexer to demonstrate use admittance inverter sequences for ease manufacture at millimeter-wave frequencies. Contrary typical impedance inverters (E-plane H-plane irises), stubs) allows larger dimensions be specified ultimately does not impede general waveguide path. The proposed is designed...

The autocorrelation function of the all-pole filter given by the conventional linear prediction (LP) matches exactly the autocorrelation function of the input signal between indices 0 and m, when the prediction order equals m. This study describes a recently developed technique, Weighted-Sum Line Spectrum Pair (WLSP), where an all-pole filter is defined by using a sum of weighted LSP (Line Spec...

Microstrip antennas are widely used in many applications due to their low profile, low cost and ease of fabrication. In some applications it is desired to have a dual band or multiband characteristics. These characteristics can be obtained by coupling multiple radiating elements or by using tuning devices such as varactor diodes [1, 2]. However, these methods make antenna more complicated. A si...

Coupled resonators are widely used in the design of filters with dual-passband responses. In this paper, we present a dual-band bandpass filter using only couplings between adjacent resonators without cross-couplings. The dual-band bandpass filter with centre frequencies of 1747MHz and 1879MHz respectively is designed and fabricated using microstrip U-shaped resonators. Using the coupled resona...

After reminding the de nition of mosaic ranks we estimate them from above for the inverses to band matrices The estimate grows logarithmically with the matrix size The result presented in this note should be compared with the well known descriptions of the inverses to band matrices as semisep arable matrices Our approach still excells in that it holds under much weaker assumptions Introduction ...

In this paper, a complete design study of DualBand microstrip antennas (MSAs) using U-shape slotted patch with different feeding techniques is given and various methods of frequency control are also demonstrated. Investigations show that all the new designs are working in SBand with satisfactory radiation characteristics and impedance bandwidths. Key MSA, Dualband antenna, Frequency control, U-...