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Tuning arrangement

A technology of tuning devices and mixing devices, which is applied in the direction of continuous tuning components, mechanical frequency control, TV, etc., and can solve problems such as inability to handle energy levels and difficult calibration operations

Inactive Publication Date: 2004-12-15
UNWIRED PLANET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Calibration operation is quite difficult
Such systems cannot handle varying energy levels in today's time slots

Method used

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  • Tuning arrangement
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Examples

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Embodiment Construction

[0015] see figure 1 , the resonance module 1 is supplied with an input signal A*sinωt. The resonant module will be tuned to output B*sinωt. Tuning is provided by taking the input and output of the resonant block. A high-frequency oscillator 2 is controllable and has a frequency range in which the input signal to the resonance module 1 lies. The input signal mixer 3 mixes the obtained input signal to the module 1 with the frequency of the oscillator 2 so as to have a frequency offset related to the obtained high frequency. An output mixer mixes the output signal obtained from module 1 with the frequency of oscillator 2 .

[0016] The output of the input signal mixer 3 is fed to the first input of the decomposition unit 5 via a first amplifier and a filter F1 which performs channel filtering and is capable of low-pass and band-pass filtering. The output of the output mixer 4 is fed to the second input of the decomposition unit 5 via a second amplifier and a filter F2 capable...

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PUM

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Abstract

The invention relates to a tuning arrangement for tuning a resonance module for wireless applications, e.g. wireless communication for a base station for mobile telephony system. It comprises means for deriving the input and the output power signals of the resonance module. Means (5) is provided for dividing information bearing parts of the derived power signals with each other to have a ratio of them. Also, means (11) is provided for tuning the resonance module until the ratio has reached a minimum value.

Description

technical field [0001] The invention relates to a tuning device for a resonant module, in particular to a tuning arrangement for the independent tuning of a resonant module of a wireless device for eg wireless communication, for example in a base station of a mobile telephone system, said base station having A plurality of resonant modules (resonator chambers), each of which is automatically controlled to its given resonant mode in relation to its input signal frequency, is then supplied to an independent tuning device referred to below as a measurement receiver. Background technique [0002] Today's mobile phone systems are becoming more and more complex due to the requirement to transmit more and more information, and more and more frequencies the actual modulation waveforms become very complex. Tuning algorithms for synthesizer autotuning must be very advanced in order to be functional. [0003] US5408688 describes a mobile telephone system comprising a base station with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03J3/14H03J7/02H03J7/16
CPCH03J7/02H03J7/16H04N5/50H03J7/023H03J3/08
Inventor L·埃德斯特伦
Owner UNWIRED PLANET