Evaluation of the SA601/SA606 demoboard
■Philips Semiconductors is dedicated to playing a major role in the wireless communication market. Key to this goal is Philips' commitment for design assistance at all levels. This is the purpose of the SA601/SA606 combo-board. The SA601 is a combined RF amplifier and mixer designed for high-performance low-power communication systems from 800-1200MHz. The SA606 is a low-voltage high performance monolithic FM IF system that, when combined with the SA601, results in a high performance double down-conversion FM receiver. To better support this type of application, Philips has combined the SA601 and SA606 ICs onto a single board which highlights how well the SA601 and the SA606 work together. This application note explains how to overcome many of the technical problems that might arise, and shows how to achieve the best possible performance from the SA601 and SA606. Test results are also included.
■This application note is divided into four main sections:
▲Overview of the SA601/SA606 combination board
▲Layout
◆Schematic, Components Specifics and Parts List
◆Impedance Matching
▲Performance
◆Test Setup and Procedures
◆Test Data and Results
▲Conclusion
◆Q/A section
●OVERVIEW:
■Both the SA601 and the SA606 are designed for portable, low voltage, low power communication applications. For a better understanding of what is involved in combining these boards, or for more information regarding the individual boards, please review application notes AN1777 (for the SA601) and AN1993-AN1996 (for the Second-IF ICs) which can be found in the Philips RF/Wireless Communications Data Handbook, IC17.
■The SA601/SA606 demoboard is designed to meet AMPS specifications. Section 2 of the EIA Interim Standard, "Recommended Minimum Standard for 800MHz Cellular Subscriber Units" (EIA/IS-19-B), was consulted as a guide. Specific sections used were:
▲RF Sensitivity
▲Adjacent and Alternate Channel Desensitization
▲Intermodulation Spurious-Response Interference
▲Protection Against Spurious Response
■Measured results demonstrate that the SA601/SA606 demoboard successfully meets and surpasses the specifications listed above.
■Although the SA601/SA606 demoboard is designed to meet AMPS cellular specifications, it can be modified for other analog cellular specifications such as TACS, ETACS, and NAMPS. The demoboard could also be configured for ISM band (902MHz – 928MHz) applications.
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demoboard 、 combined RF amplifier and mixer 、 low-voltage high performance monolithic FM IF system |
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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1997 Aug 20 |
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AN1000 |
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141 KB |
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