What inferior position does filter of Zhuo Shengwei MAX-SAW have on function and cost?

Filter of Zhuo Shengwei MAX-SAW is in on function and cost under existence a few inferior position:

Performance inferior position

• High frequency paragraph of function limitation: MAX-SAW filter uses POI underlay, the level that comparatives with BAW and FBAR can be reached in applying under Sub-3GHz, but in above of 5GHz of more high frequency Duan Ru, the difference of function of FBAR filter existence that likelihood and rich know.
• Temperature stability is relatively insufficient: Compare with the TC-SAW filter of Skyworks, MAX-SAW filter of Zhuo Shengwei may inferior to prepare a bit in temperature stability respect.

Cost inferior position

• Underlay cost is higher: The technology of POI underlay preparation of MAX-SAW filter is sophisticated, for example Soitec uses bond to come off the technology comes the single crystal with ultrathin preparation presses electric film, the cost of special device only station that its use is as high as several ten million yuan, bring about underlay cost house not to fall high, odd a cost in 420-800 dollar interval.
• Cost of potential and patent risk: Zhuo Shengwei measures success TF-SAW underlay to originate at present Soitec, soitec sale limits makes the patent folding a layer of place basically enclothe less than in village cropland, if want escape this is patent, can adopt the Piston plan with more complex design only, this may raise design and manufacturing cost. In addition, the patent lawsuit of the village field place that make may bring about Zhuo Shengwei to be faced with legal fee, product to bear the risk such as carry out, raise potential cost thereby.