Synthesis of lumped and distributed filters and diplexers

Koyaz, Hikmet Ünal


Synthesis of Bandstop filters with ultra wide upper passbands
Yıldırım, Nevzat (2007-06-08)
A new LP Prototype-to-Distributed Bandstop mapping is defined to synthesize BSF's with controllable upper pass bandwidths. The synthesized filters involve resonators made up of commensurate OC and SC stubs coupled by inverters. It is shown that when inverters are approximated by several unit elements (UE) then their contribution to the response increases appreciably upon optimization. Thus, a novel approach is developed which can be used to synthesize BSF's with contributing UE's having ultra wide upper pas...
Microwave switched multiplexer design
Akkul, M. Mustafa; Yıldırım, Nevzat; Department of Electrical and Electronics Engineering (1999)
Design of Microstrip Quadruplet Filters on Filpro
Oruc, Sacid; Yıldırım, Nevzat (2018-11-02)
In this paper, a simple dimensional design procedure is developed for microstrip/stripline quadruplet filters by starting with direct BP synthesis of a lumped quadruplet with inverter couplings, K14, K12, K23 and K34. K14 is the cross-coupling inverter which creates a symmetric pair of finite transmission zeros (FTZ's) if the sign of K14 is opposite of the other inverters while a complex TZ is created if K14 has the same sign as the other inverters leading to linear phase (flat delay) responses. The LC reso...
Synthesis of cross-coupled filters using cascaded synthesis approach
Şen, Özlem; Yıldırım, Nevzat; Department of Electrical and Electronics Engineering (2000)
Synthesis Approach for Compact Ku-Band Waveguide Lowpass Filters with Wide Rejection Bandwidth
Cetin, Metehan; Boyacioglu, Gokhan; Alicioglu, Bulent; Yıldırım, Nevzat (2018-11-02)
Classical corrugated waveguide (WG) LP filters with wide rejection bandwidths rely on designing a band stop block with reduced height waveguides augmented by impedance matching blocks at terminations. In this paper direct synthesis approach is used to synthesize the whole filter as a single unit. The initial filter is designed as a TEM mode commensurate length LPF with very high quarter wavelength frequency for size reduction. Filter is made up of series SC stubs interlaced by contributing Unit Elements (UE...
Citation Formats
H. Ü. Koyaz, “Synthesis of lumped and distributed filters and diplexers,” Ph.D. - Doctoral Program, Middle East Technical University, 1994.