Title :
Monolithic Transformers for High Frequency Bulk CMOS Circuits
Author :
Cheema, Hammad M. ; Sakian, Pooyan ; Janssen, Erwin ; Mahmoudi, Reza ; Van Roermund, Arthur
Author_Institution :
Mixed-signal Microelectron. group, Eindhoven Univ. of Technol., Eindhoven
Abstract :
This paper presents two monolithic transformer structures exhibiting high self resonance frequencies(fSR). Effect of positive and negative coupling factor on self resonance frequency is investigated. The transformer turn ratio and structure is selected to improve design and ease layout of a high frequency LNA and VCO. Measurement results of a transformer show good agreement with simulated values and demonstrate a coupling factor of 0.7 at 20 GHz.
Keywords :
CMOS integrated circuits; transformers; high frequency bulk CMOS circuits; high self resonance frequencies; monolithic transformers; negative coupling factor; self resonance frequency; CMOS technology; Circuit simulation; Coupling circuits; Inductance; Integrated circuit measurements; RLC circuits; Resonance; Resonant frequency; Transformers; Voltage-controlled oscillators;
Conference_Titel :
Silicon Monolithic Integrated Circuits in RF Systems, 2009. SiRF '09. IEEE Topical Meeting on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-3940-9
Electronic_ISBN :
978-1-4244-2831-1
DOI :
10.1109/SMIC.2009.4770512
