Resonating device and method for electrically regulated filtering unit

A technology of electric tuning filter and tuning device, which is applied in the field of GSM system, can solve the problems of affecting system tuning time, slow frequency point detection speed, increasing device cost, etc., and achieve the effect of reducing system complexity and shortening system tuning time

Inactive Publication Date: 2012-05-23
翟士亭
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

certainly figure 2 The device can also be applied to carrier frequency point detection, but the frequency point detection speed of this device is relatively slow, especially in the DCS / PCS frequency band of the GSM system, which affects the system tuning time
[0011] Use other carrier extraction methods such as Costa loop and inverse modulation loop to extract the carrier quickly, which can meet the system design requirements, but increases the complexity of the system, cannot achieve the shared design of the circuit, and increases the cost of the device

Method used

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  • Resonating device and method for electrically regulated filtering unit
  • Resonating device and method for electrically regulated filtering unit
  • Resonating device and method for electrically regulated filtering unit

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Embodiment Construction

[0033] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0034] image 3 is a block diagram of an apparatus 300 according to the invention.

[0035] Such as image 3 As shown, it includes: a mixer 302 and an analog-to-digital conversion unit 304, and at the same time, the device also includes: a filter combination unit 306, located between the output terminal of the mixer and the input terminal of the analog-to-digital conversion unit, for mixing The output signal of the frequency converter is subjected to multiple times of wideband filtering and multiple times of narrowband filtering, and the filtered output signal is sent to the analog-to-digital conversion unit.

[0036] According to the tuning device of the present ...

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Abstract

The present invention provides a turning device which is used for the electric turning wave-filtering unit and the turning method thereof, wherein, the device comprises the following components: a mixer, a module converting unit and a wave filtering assembling unit. The wave filtering assembling unit is arranged between the output end of the mixer and the input end of the module converting unit and is used for executing a plurality of broadband filtering and narrowband filtering to the output signal of the mixer and transmitting the output signal after wave filtering to the module converting unit. The device and method adopting the invention shorten the turning period of the system and reduce the complexity of the system. The invention not only can be applied to the occasion when the electric turning waver-filtering system can communicate with the GSM carrier frequency, and the invention is more suitable to the occasion when the electric turning wave-filtering system can not communicate with the GSM carrier frequency.

Description

technical field [0001] The present invention relates to the GSM system, and more specifically, to a tuning device and tuning method for an electronically adjustable filter unit. Background technique [0002] There are two types of tuning devices for traditional electric tuning filter systems. [0003] figure 1 It is a traditional tuning device 1 suitable for electric tuning filter system. [0004] Such as figure 1 As shown, each ESC filter unit uses two power couplers to couple the power of the input filter unit and the power of the output filter unit respectively, and perform radio frequency detection on the two coupled powers to determine whether the difference between the two satisfies the preset Value to drive the tuning motor to directly achieve the purpose of tuning. [0005] figure 1 The device does not need frequency detection, but there are complex power coupling units and switch arrays, the system complexity is high, and the position of the output coupling pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/06H04B1/40H04B1/52
Inventor 吴阳春赵铮
Owner 翟士亭
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