Dr. Iosu Cendoya Profile

Dr. Iosu Cendoya

at Univ de Navarra

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 30 June 2005 Paper

Design considerations for high pass frequency passive filters

N. Sainz, I. Cendoya, U. Alvarado, H. Solar, J. de No

Proceedings Volume 5837, (2005) https://doi.org/10.1117/12.608359

KEYWORDS: Metals, Linear filtering, Electromagnetic coupling, Signal attenuation, Capacitance, Inductance, Digital filtering, Manufacturing, Image filtering, Standards development

Read Abstract +

Two high pass filters at 2.4 GHz and 5.2 GHz frequencies in SiGe 0.8μm process are presented. Design process and measurement results are discussed. This paper evaluates electromagnetic coupling, and presents a theoretical filter model which takes into account these effects, it also enumerates some design considerations to improve passive components design. A previous model of passive components is ilustrated, and the main conclusions are exposed to justify inductor and varactor election. Some inductors and varactors were manufactured previously to study how to improve the quality factor and to ensure accurate inductance and capacitance values. Different geometries for these passive components were designed, fabricated and measured, the best inductor and varactor election for filter design is based on these measurement results. After components election is carried out, the filter architecture is explained. The election of the optimal filter configuration is based, among other considerations, on minimizing passive component number, especially inductors. By achieving the lowest quality factor for inductors, filter characteristics improve by diminishing inductor number, therefore, the selected filter order is three, and just one inductor is used. Once the filter designs are manufactured and measured some non-modelled effects are appreciated and studied from the measurement results. These effects produce a pass band attenuation degradation, cut-off frequency deviation and resonant behavior at frequencies below cut-off frequency. To check what these effects are due to, electromagnetic coupling effect simulations are made using CADENCE simulator. This electromagnetic analysis helps evaluate the interaction effects between passive components. Electromagnetic simulations agree with the filter degradation measurement results.

Proceedings Article | 30 June 2005 Paper

Study of the proximity effect in high q inductors for wireless LAN (WLAN)

I. Cendoya, J. Mendizabal, N. Sainz, I. Gutierrez, U. Alvarado, J. de No

Proceedings Volume 5837, (2005) https://doi.org/10.1117/12.608358

KEYWORDS: Metals, Resistance, Silicon, Magnetism, CMOS technology, Local area networks, Integrated circuits, Oxides, Inductance, Quality measurement

Read Abstract +

The quality factor (Q) measures the ability of a component to preserve the energy received during the circuit operation. Q is the most important parameter in an inductor. It is mainly limited by the loss due to inductor metal resistance, substrate resistance, and the resistance associated with induced Eddy current below the inductor metal trace. One of the pernicious effects for the Q of an inductor is the proximity effect. Proximity effect is caused by the magnetic field generated by the own inductor and induces parasitic currents in the metal tracks causing an increase in the resistance and thus diminishing the Q. The objective of this paper is to study this effect and consequently to obtain some inductor design rules, which allow the designer to implement high quality inductors. This paper is focused on balanced inductors for a WLAN application using CMOS 0.18 μm technology.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years