AN1526 Freescale Semiconductor / Motorola, AN1526 Datasheet
AN1526
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AN1526 Summary of contents
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... However, the authors are not aware of these parameters being used successfully above a few watts of output power. Measurement of these parameters is usually accomplished by driving the device from a 50 ohm source to achieve a collector or drain current comparable to that expected in actual operation. Go to: www.freescale.com Order this document by AN1526/D 1 ...
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Freescale Semiconductor, Inc. Devices with output power ratings above a few watts have input reflection coefficient magnitudes very close to one, requiring drive levels far beyond the capability of a standard network analyzer to merely turn the device on, if ...
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Freescale Semiconductor, Inc. devices is a much stronger function of load impedance than shown for this small device. Device impedances published by vendors of RF power transistors should only be used as an approximation for a first cut circuit design. ...
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Freescale Semiconductor, Inc. Table 3. MRF873 Impedance Data Computed from S–Parameters (I I/P Simul. Freq. Input Z Conjugate. (MHz Match 11 806 0.95 + j3.15 0.48 – j3.19 838 1.00 + j3.31 0.50 – j3.41 870 1.07 + ...
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Freescale Semiconductor, Inc. specified on Motorola data sheets (or any other vendor’s data sheet known to the authors) is the impedances at the harmonic frequencies presented to the device. In most cases the first shunt capacitance combined with ...
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Freescale Semiconductor, Inc. 870 MHz, Class– 12.5 VDC 2.4 Watts CE in Figure 1. MRF873 Gain Surface vs Fundamental Load Impedance 870 MHz, Class–C, V Figure 3. MRF873 Return Loss Surface vs 6 For More Information ...
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Freescale Semiconductor, Inc. Load Impedance Chart Z0 = 3.0 Ohms 806 MHz, Class– 12.5 VDC Figure 4. MRF873 Constant Gain Contours Load Impedance Chart Z0 = 3.0 Ohms 806 MHz, Class– 12.5 VDC, ...
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Freescale Semiconductor, Inc. Load Impedance Chart Z0 = 3.0 Ohms 838 MHz, Class– 12.5 VDC Figure 8. MRF873 Constant Gain Contours Load Impedance Chart Z0 = 3.0 Ohms 838 MHz, Class– 12.5 VDC, ...
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Freescale Semiconductor, Inc. Load Impedance Chart Z0 = 3.0 Ohms 870 MHz, Class– 12.5 VDC 2.4 Watts CE in Figure 12. MRF873 Constant Gain Contours Load Impedance Chart Z0 = 3.0 Ohms 870 MHz, Class–C, V ...
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Freescale Semiconductor, Inc. Chart Z0 = 3.0 Ohms Figure 16. Load–Pull Impedances Presented to MRF873 at 870 MHz Figure 18. Photograph of CS–12 Impedance Measurement Probe Figure 20. Photograph of MRF873 Broadband 10 For More Information On This Product, Figure ...
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Freescale Semiconductor, Inc. C1, C15 — Tantalum C2, C14 — 1000 pF, 350 V, Unelco C3, C12 — 43 pF, 100 Mil, ATC Chip Capacitor C5, C13 — 91 pF, Mini–Unelco C4, C11 — 0.8 – ...
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Freescale Semiconductor, Inc. 12 For More Information On This Product, Figure 24. Load–Pull Test Setup V = 12.5 VDC Watts CE out Figure 25. Broadband Performance of MRF873 Production Test Fixture MOTOROLA SEMICONDUCTOR APPLICATION INFORMATION Go to: ...
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Freescale Semiconductor, Inc. Figure 26. MRF873 Data Book Input and Output Impedances MOTOROLA SEMICONDUCTOR APPLICATION INFORMATION For More Information On This Product 12.5 VDC Watts CE out Go to: www.freescale.com 13 ...
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Freescale Semiconductor, Inc. CONCLUSIONS For an RF power transistor we have demonstrated that the input and output large–signal device impedances are not only frequency dependent, but are also determined by the operating conditions of the device. Because of the wide ...
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Freescale Semiconductor, Inc. ( Leighton Chaffin, and J. G. Webb, “RF Amplifier Design with Large–Signal S–Parameters,” IEEE Transactions on Microwave Techniques, MTT–21, 809–814, December 1973. ( Mazumder, “Two–Signal Method of Measuring the Large–Signal S–Parameters ...
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... ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Centre, 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. 852–26668334 Technical Information Center: 1–800–521–6274 HOME PAGE: http://www.motorola.com/semiconductors/ 16 For More Information On This Product, are registered trademarks of Motorola, Inc. Motorola, Inc Equal MOTOROLA SEMICONDUCTOR APPLICATION INFORMATION Go to: www.freescale.com AN1526/D ...