POWER OF ATTORNEY


I, Charlie X. Huang, hereby authorize 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.
The undersigned hereby grants 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 the undersigned 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.  The undersigned acknowledges that the foregoing
attorney-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned s 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/ Charlie X. Huang				October 20, 2008
Charlie X. Huang                                      Date