MINIMUM PHASE SELECTIVE BANDPASS DIGITAL FILTERS WITH CONTROLLED PASS-BAND LOSS AND DELAY

PAPER: Group Delay of Digital All-Pass-Filters and Phase-Correction Filter Design

(1. Audio Engineering, Communication University of China, Beijing 100024, China) (2. Information Engineering School, Communication University of China, Beijing 100024, China) Abstract: To correct phase distortion when filtering in the full band within the transient band, a method to design phase correction filters is proposed based on the studies on mathematical properties of IIR all-pass filte...

Fully integrated low-loss band-pass filters for wireless applications

Abstract Fully integrated low insertion loss micromachined band-pass filters are designed and fabricated on the silicon substrate (ρ = 10–20 cm, εr = 11.9) for UHF applications. Filters are made of silver, which has the highest conductivity of all metals, to minimize the ohmic loss. A detailed analysis for realizing low insertion loss and high out-of-band rejection filters using elliptic magnit...

Improving the Pass-Band Return Loss in Liquid Crystal Dual-Mode Bandpass Filters by Microstrip Patch Reshaping

In this paper, the design and experimental characterization of a tunable microstrip bandpass filter based on liquid crystal technology are presented. A reshaped microstrip dual-mode filter structure has been used in order to improve the device performance. Specifically, the aim is to increase the pass-band return loss of the filter by narrowing the filter bandwidth. Simulations confirm the impr...

Micromachined plastic W-band bandpass filters

Results are presented for m using a cost-effective poly and sealing techniques. T WR-10 waveguide with a of 96.77GHz with a bandw a single cavity resonator i better than −9.3dB have b

High-performance variable band-pass/band-stop state-space digital filters using Gramian-preserving frequency transformation