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A Balanced Unbalanced Converter

A balanced-unbalanced, converter technology, applied in waveguide-type devices, circuits, connecting devices, etc., can solve the problem of high hardware cost, save hardware cost and reduce signal loss.

Inactive Publication Date: 2021-02-19
AMBIT MICROSYSTEMS (SHANGHAI) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, a wire-wound Balun is usually used to couple the balanced signal to a single-ended unbalanced output, and tap the center of the balanced end structure to provide DC power for biasing. However, the hardware of this wire-wound Balun part higher cost

Method used

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  • A Balanced Unbalanced Converter
  • A Balanced Unbalanced Converter
  • A Balanced Unbalanced Converter

Examples

Experimental program
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Embodiment Construction

[0068] see figure 1 , figure 1 It is a structural diagram of an embodiment of the balun of the present invention. Such as figure 1 As shown, in this embodiment, the balun includes a first input and output terminal A, a second input and output terminal B, a third input and output terminal C, a first bias power supply input terminal D, a second bias Piezoelectric source input terminal E, connection terminal F, first phase conversion circuit 10 , first band rejection filter 20 , second phase conversion circuit 30 , second band rejection filter 40 . It should be noted that the connection terminal F is a node connecting the first phase conversion circuit 10 and the second phase conversion circuit 30 , which is provided for the convenience of describing the present invention.

[0069] The first phase conversion circuit 10 is electrically connected between the first input and output terminal A and the third input and output terminal C for providing a phase advance of 90 degrees. ...

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Abstract

A balanced unbalanced converter, comprising a first input and output terminal; a second input and output terminal; a third input and output terminal; a first bias power supply input terminal; a second bias power supply input terminal; a first phase conversion circuit, using To provide a 90-degree phase lead; a first band-stop filter, electrically connected between the first input-output end of the first input-output end and the first bias power input end, for blocking the preset frequency band signal; a second phase conversion circuit, used to provide a 90-degree phase lag; and a second band-stop filter, electrically connected between the second input and output terminals and the second bias power supply input terminal, for Block the signal of the preset frequency band. The balun provided by the present invention realizes the function of the traditional wire-wound balun through a circuit composed of inductors, capacitors and magnetic beads, which saves hardware costs and can reduce the loss of differential signals to single-ended signals .

Description

technical field [0001] The invention relates to an electronic component, in particular to a balanced unbalanced converter. Background technique [0002] In the architecture of the cable TV network, a cable modem (Cable Modem) needs to be used to modulate the data uploaded by the user and transmit it to the connector end, and to demodulate the downlink data sent by the connector end and then transmit it to the user. When transmitting uplink data to the connector end, it usually needs to go through the following process: 1) The uplink signal modulated by the cable modem is a low frequency band signal (5 ~ 85MHz), and the differential output is adopted; 2) A balanced signal is connected after the cable modem The unbalanced converter (Balun) is used to convert the differential signal into a single-ended output; 3) The single-ended output signal is processed by an uplink and downlink duplexer (Diplexer) and then output to the connector. In the prior art, a wire-wound Balun is us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/10
CPCH01P5/10
Inventor 郑光伟
Owner AMBIT MICROSYSTEMS (SHANGHAI) LTD