POWER OF ATTORNEY



I, John J. Bruggeman, hereby authorize Lip-Bu Tan, Kevin S. Palatnik,
James J. Cowie or Sharon Segev of Cadence Design Systems, Inc.,
a Delaware corporation
(the Company), to sign and file on my behalf the Initial Statement of
Beneficial Ownership of Securities on Form 3, Statements of Changes in
Beneficial Ownership on Forms 4 and 5, and any Amendments and applications
thereto, to be filed with the Securities and Exchange Commission pursuant to
Section 16(a) of the Securities Act of 1934 relating to my beneficial
ownership of securities in the Company. I hereby grant
to each such attorney-in-fact full power and authority to do and perform
any and every act and thing whatsoever requisite, necessary, or proper
to be done in the exercise of any of the rights and powers herein granted,
as fully to all intents and purposes as I might or
could do if personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact s substitute or substitutes,
shall lawfully do or cause to be done by virtue of this power of
attorney and the rights and powers herein
granted.  I acknowledge that the foregoing
attorney-in-fact, in serving in such capacity at the request of the
undersigned, is not assuming, nor is the Company assuming, any of the
my responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934. This authorization shall remain in effect until I am
no longer required to file forms under Section 16(a) with respect to the
Company s securities, unless earlier revoked in writing delivered to
the foregoing attorneys-in-fact.


/s/ John J. Bruggeman				August 26, 2009
John J. Bruggeman                                     Date