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Device for preliminarily dividing frequency of high-speed wideband

A prescaler and broadband technology, which is applied in the field of high-speed broadband prescaler, can solve the problems of difficult frequency division ratio and narrow bandwidth, and achieve high sensitivity and impedance matching, suppression of common mode effects, and high operating frequency. Effect

Inactive Publication Date: 2009-09-02
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operating frequency of the analog prescaler is relatively high, the power consumption is relatively small, but the bandwidth is relatively narrow, and it is difficult to achieve any multiple of the frequency division ratio on the circuit

Method used

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  • Device for preliminarily dividing frequency of high-speed wideband
  • Device for preliminarily dividing frequency of high-speed wideband
  • Device for preliminarily dividing frequency of high-speed wideband

Examples

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Embodiment Construction

[0016] like figure 1 The high-speed broadband prescaler shown includes a core frequency division unit 1 , an input buffer amplifier unit 2 , an output buffer amplifier unit 3 , and a bias circuit 4 .

[0017] Structurally, the core frequency division unit 1 adopts a static digital prescaler. Compared with an analog frequency divider, this structure can realize wideband frequency division and achieve a higher operating frequency, thereby ensuring that the chip works from direct current (DC) to highest operating frequency.

[0018] In terms of circuit design, the core frequency division unit 1 is formed by multiplexing multiple emitter coupling logic units 11 with the same structure, such as figure 2 shown. The emitter-coupled logic unit 11 is a current-type switching circuit, and its main feature is that the switching speed is fast (about 1 nanosecond), which is several times the switching speed of the usual transistor-transistor logic circuit, and it can be easily composed,...

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Abstract

The invention relates to a device for preliminarily dividing the frequency of a high-speed wideband, comprising a core frequency-dividing unit, an input buffering and amplifying unit, an output buffering and amplifying unit and a bias circuit, wherein the core frequency-dividing unit adopts a static digital device for preliminarily dividing frequency, the input buffering and amplifying unit is arranged between a signal input interface and the core frequency-dividing unit and used for increasing the amplitude sensitivity of an input signal and realizing the impedance matching of an input interface, the output buffering and amplifying unit is used for shaping the wave of the signal output by the core frequency-dividing unit and inhibiting the common mode impact of the signal output by the core frequency-dividing unit, and the bias circuit is used for providing reasonable bias voltage for the circuit of the device for preliminarily dividing frequency and ensuring a DC operating point for a chip to work. The device for preliminarily dividing the frequency of a high-speed wideband can correctly divide the frequency within the frequency range of DC-18GHz.

Description

technical field [0001] The invention relates to a high-speed broadband prescaler. Background technique [0002] MMIC (Monolithic Microwave Integrated Circuit) uses semiconductor production technology to integrate all active components (such as heterojunction transistors, electron mobility transistors, etc.) and passive components (such as resistors and capacitors) in the circuit , inductors, etc.) microwave circuits fabricated on the same semiconductor substrate. MMIC has many advantages such as easy to use, good electrical performance index, high reliability, long life, small size, light weight, good consistency, low cost, etc. It is more and more used in today's radio frequency and microwave systems. With the rapid development of military and civil communication systems such as wireless local area network (WLAN), personal mobile communication system (PCS) and global positioning system (GPS), as well as high In order to meet the needs of precision weapon systems, high-per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K23/66
Inventor 隋文泉陆科杰刘大伟栗成智瞿晓峰
Owner ZHEJIANG UNIV
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