The patent's inventors are Huang, Chung-Er (
This patent was filed on
From the background information supplied by the inventors, news correspondents obtained the following quote: "The present invention is related to an integrated system, and more particularly to an integrated system using a substrate module having an embedded phase-locked loop, and a fabricating method thereof.
"Reference oscillation signals are the bases of digital logic operation. Although the frequency of the output signal of crystal oscillator has a better stability than LC oscillator, the frequency thereof is harder to alter. The oscillation circuit manufactured by using phase-locked loop has the advantages of wide oscillation frequency range and highly stable frequency, so that it is adopted by many electronic systems.
"Please refer to FIG. 1, which is a schematic view showing the system architecture of a typical phase-locked loop. As shown, the phase-locked loop 10 includes a base frequency oscillator 101, a phase frequency comparator 103, a voltage controlled oscillator 105 and a loop filter 107. The base frequency oscillator 101 outputs an oscillation signal with frequency fr, and the voltage controlled oscillator 105 outputs an oscillation signal with frequency fo. Then, the phase frequency comparator 103 compares fr with fo for outputting an error signal PD which represents the magnitude relationship of fr and fo by positive/negative pulse. Then, the loop filter 107 converts the error signal PD into DC voltage signal
"Through utilizing frequency divider to alter the parameters of the feedback path of the phase-locked loop, all kinds of output frequencies can be obtained for be applied as clock generator in computer system. In communication system, the frequency synthesizer mounted at the front end of various wired and wireless transceiver devices also utilizes the phase-locked loop to produce accurate local oscillation frequency signal, so as to achieve frequency up conversion and down conversion of the RF signal. Besides, many control systems (such as, a CD-ROM drive control system) also utilize the phase-locked loop technology to achieve precise control. Therefore, phase-locked loop gradually becomes an essential for many electronic systems.
"Owing to the technical improvement and also the combination of semiconductor manufacturing technology, chip scale package technology and PCB forming technology, the electronic system can be integrated as a miniaturized module product for being one of the components of backend product, so that it can be directly mounted on the circuit board, thereby reducing the design complicity of backend products. Besides, for cooperating with multi-function integration and miniaturization of electronic products, the module products also have the need in integration and miniaturization. Take RF module as example. The current development thereof is namely to integrate multiple communication systems, or integrate the communication system and the application system in one single module. However, owing to the integration, the circuit inside the module must be increased.
"In view that the circuit and components of phase-locked loop always occupy a certain construction area and only leave limited area for other usage, which might increase the difficulty in integration, the applicant provides the present invention for improving thereof."
Supplementing the background information on this patent, NewsRx reporters also obtained the inventors' summary information for this patent: "Therefore, the object of the present invention is to provide a substrate module having an embedded phase-locked loop, an integrated system using the same and a fabricating method thereof. Through embedding the phase-locked loop in the substrate module, the surface elements and circuit of the integrated system can be reduced, so as to reduce construction area, increase construction density, shorten signal transmission path and improve function and reliability of the substrate module and the relative integrated system.
"The present invention discloses a substrate module having an embedded phase-locked loop including a base, a multi-layer structure, a built-in circuit unit and an external circuit unit. The multi-layer structure is formed in the base and the built-in circuit unit is integrated inside the multi-layer structure. The external circuit unit is mounted on the upper surface of the base and electrically coupled to the built-in circuit unit for jointly forming a phase-locked loop.
"The present invention further discloses a fabricating method for the substrate module having an embedded phase-locked loop, including steps of: providing the base; integrating the built-in circuit unit to form a multi-layer structure in the base; and mounting the external circuit unit on the upper surface of the base and electrically coupling the external circuit unit to the built-in circuit unit.
"Furthermore, the present invention also discloses an integration module including the substrate module having an embedded phase-locked loop, and at least one function unit, wherein the function unit is mounted on the upper surface of the base and is electrically coupled to the phase-locked loop.
"Besides, the present invention further discloses a fabricating method of an integration module including steps of: providing the substrate module having an embedded phase-locked loop; and mounting at least one function unit on the upper surface of the base and electrically coupling the function circuit to the phase-locked loop."
For the URL and additional information on this patent, see: Huang, Chung-Er; Chen, Nan-Cheng. Substrate Module Having an
Keywords for this news article include: Microtechnology,
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