Premium
Synthesis of a tunable ring filter: Proof‐of‐concept with fixed implementations at D‐band
Author(s) -
Rynkiewicz Pedro,
Franc AnneLaure,
Coccetti Fabio,
Wietstruck Matthias,
Kaynak Mehmet,
Prigent Gaëtan
Publication year - 2021
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22761
Subject(s) - bandwidth (computing) , electronic engineering , modular design , electrical impedance , filter (signal processing) , computer science , proof of concept , capacitor , electrical engineering , engineering , telecommunications , voltage , operating system
Abstract The working frequencies of telecommunication systems are rapidly increasing and sub‐THz applications will soon be required. In that context, the current article presents the synthesis of a tunable ring filter. The considered filter introduces a new degree of freedom that allows to meet targeted specifications in terms of central frequency and bandwidth. Thanks to a capacitor displacement, the equivalent characteristic impedance can be tuned independently of its equivalent electrical length. The existing filter synthesis is modified to take this concept into account and thus provide a synthesis tunable in central frequency and bandwidth. The proof‐of‐concept of the design procedure is achieved in SiGe BiCMOS 0.25 μm technology with the implementation and measurement of eight non‐tunable circuits in the D‐band.