DETAILED ACTION
Notice of Pre-AIA or AIA Status
The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA .
Claim Rejections - 35 USC § 103
The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action:
A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made.
Claim(s) 1 and 4 is/are rejected under 35 U.S.C. 103 as being unpatentable over Chiappetta (US 6,657,570) in view of Wilson (US 2021/0384866) in view of Russell (US 2021/0085694).
Regarding claim 1, fig. 1 of Chiappetta discloses a power amplifier comprising: an amplifier [120]; a filter [116] and a variable attenuator [112] which are connected in series to an input [104] of the amplifier; a peak detector [128, 138] detecting a peak value of a drain voltage of the amplifier; and a controller [150] making the filter function as a linearizer to reduce an attenuation amount of the variable attenuator if the peak value exceeds a threshold (based on results of peak detector). Chiappetta discloses the device as indicated above except where the amplifier is a GaN HEMT type. However, Wilson describes implementing amplifiers such as GaN HEMT in Doherty arrangements (par. 104). In view of such teaching, it would have been obvious to the ordinary artisan before the effective filing date of the claimed invention to modify the invention as indicated above by incorporating the GaN HEMT amplifier as taught in Wilson for the purpose of utilizing a suitable and well-known type of amplifier design. Chiappetta in view of Wilson teaches the device as indicated above except where the filter utilized diodes for linearization. However, Russell describes implementing filters with linearity based on diodes (par. 8). In view of such teaching, it would have been obvious to the ordinary artisan before the effective filing date of the claimed invention to modify the invention as indicated above by incorporating the filter design with diodes as taught in Wilson for the purpose of utilizing a suitable and well-known type of filter implementation.
Regarding claim 4, the combination as indicated above discloses wherein the amplifier includes a Doherty amplifier.
Allowable Subject Matter
Claims 2, 3, and 5-8 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims.
Conclusion
The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Lemson describes a multi-range voltage sensor. Smith describes a system for using AC and DC sensors. Lin describes a signal processing circuit.
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/SIBIN CHEN/Primary Examiner, Art Unit 2836
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