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Communicaiton system and method

A communication system and signal technology, applied in the field of communication systems, can solve the problems of sacrificing bandwidth, low Q value, gain and bandwidth containment, etc.

Active Publication Date: 2007-05-09
VIA TECH INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing traditional tuned amplifier circuit 10 is formed by a fixed value capacitor Cp and a fixed value inductor Lp, so its gain and bandwidth will be mutually restrained
If the combination of capacitor Cp and inductor Lp has a high Q value, the bandwidth will be sacrificed, and equal power gain cannot be provided for the signals to be transmitted in different channels
If the combination of capacitor Cp and inductor Lp has a low Q value, the gain will be sacrificed and better power gain cannot be provided.
Therefore, it is difficult for the existing fixed-value capacitance-sensing tank tuning amplifier circuit in the communication system to take into account the requirements of power gain and bandwidth

Method used

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  • Communicaiton system and method

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Embodiment Construction

[0033]The present invention proposes a communication system that uses a tuning amplifier circuit with a variable load circuit, which can take into account both high gain and high bandwidth, so as to provide equal high power gain for each channel distributed in a wide frequency band. Please refer to FIG. 4 , which schematically shows a functional block diagram of an embodiment 20 of the communication system of the present invention. A frequency synthesizer 24 and an amplifying circuit 30 are provided in the communication system 20, and can receive a frequency division data N-Data, a clock CLK and A latch signal LE. The interface circuit 26 can receive the frequency-division data N-Data according to the trigger of the clock CLK, so as to convert the frequency-division data N-Data into Nd-bit (Nd is a certain value) frequency-division data N-Dt, and according to the latch signal The frequency division data N-Dt is maintained (hold) under the control of the LE, so that the freque...

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Abstract

The present invention provides a communicaiton system and a method. In the communication system, a frequency synthesizer synthetizes a tuning signal according to frequency demultiplication data and a certain frequency reference signals for modulating signals to be transmitted. In the present invention, the communication system can modulate the equivalent impedance of the inductance capacitance groove load circuit of an amplifying circuit according to the value of the frequency data to make the passband of the equivalent impedance translate in the frequency domain and conform to the frequency range of the signals to be transmitted. The communication system can modulate dynamically the equivalent impedance of the inductance capacitance groove to realize equivalent tuned amplifing respectively for different frequency ranges of wide frequency band by using the method in the present invention.

Description

technical field [0001] The present invention relates to a communication system and a related method, in particular to a communication system and a related method capable of dynamically adjusting equivalent impedance according to the signal frequency range to amplify signals in different frequency ranges with equal power. Background technique [0002] Generally speaking, when the communication system needs to transmit data, the communication system will modulate the data to be transmitted to form a corresponding signal to be transmitted, and then use an amplification circuit to amplify the power of the signal to be transmitted to send the signal. Please refer to FIG. 1 , which is a circuit diagram of a conventional tuning amplifier circuit 10 . The amplifying circuit 10 is biased between the DC voltage V and the ground terminal voltage G, and an n-type metal oxide semiconductor transistor M0 is arranged in it to realize an amplifier, and the capacitor Cp and the inductor Lp c...

Claims

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Application Information

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IPC IPC(8): H04L27/12H04L27/14
Inventor 吴丕安刘先佑
Owner VIA TECH INC
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