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Voltage regulator for lnb

A technology of voltage regulators and devices, which is applied in the direction of instruments, electric variable adjustment, control/regulation systems, etc., and can solve problems such as high temperature of components, high cost, noise, etc.

Inactive Publication Date: 2010-06-09
ZETEX SEMICON PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Doing so is wasteful and can generate very high temperatures for the components and create constraints on the PCB / LNB case structure
Inductor-based switching regulators solve the dissipation problem, but introduce a serious noise problem, which is very expensive to overcome
A popular solution to partly solve this noise problem is to pre-regulate (linearize) the inductor-based switching converter, however, to reduce the switching noise to an acceptable level in order to solve the problem of residual noise, Still require bulky and expensive filtering / smoothing components

Method used

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  • Voltage regulator for lnb
  • Voltage regulator for lnb
  • Voltage regulator for lnb

Examples

Experimental program
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Embodiment Construction

[0042] Refer below figure 1 , figure 1The core elements of an embodiment of the invention in a single general purpose LNB (single output device) are shown. The voltage source Vstb represents the set-top box, which not only supplies power to the LNB, but also receives RF signals from the LNB. Lds, Cds, and Rds represent the DiSEqC filter network, which allows the 22kHz control signal to be fed into the power line. A negative effect of this network is that it increases the low-frequency impedance of the power line, making it easier to interfere with noisy loads. The supply Vprc and the FET it drives (M_PR) function as a pre-regulator (ie they form part of the regulation arrangement). The adjustment device can also be described by a linear adjustment device. The linear preregulator is followed by a two-phase switched capacitor DC / DC converter. Phase 1 uses pulse generators V2, V3, V4, and V5 and the FETs driven by them. Phase 2 uses pulse generators V6, V7, V8 and V9 and th...

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Abstract

A voltage regulator comprises first and second capacitors and regulation means arranged to provide a respective regulated charging current from an input terminal to each of the capacitors. The regulation means comprises at least one device through which at least a portion of the respective charging current to at least one of the capacitors is supplied. The device is controllable with a control signal to regulate current flow through the device. The regulation means further comprises control signal supply means connected to the output terminal and arranged to provide said control signal to the device, the control signal being dependent upon voltage at the output terminal such that current flow through the device is regulated according to the voltage at the output terminal.

Description

technical field [0001] The present invention relates to a voltage regulator, in particular but not exclusively to a voltage regulator suitable for an LNB comprising more than one low noise amplifier. Background technique [0002] A low-noise block (or LNB) is a well-known device, also known as a down converter, due to its ability to convert an entire frequency band or block of frequencies to a lower frequency band. The LNB is usually incorporated into the satellite signal receiving device or dish wire and is placed at the end of the arm so that it is aligned with the parabolic reflective dish wire so that the parabolic reflective dish wire can reflect the signal received from the antenna Focus on the feed horn of the LNB. The LNB converts the received signal to a lower frequency band, and then uses a connecting cable (usually coaxial cable) to send the low frequency signal to the satellite receiver. [0003] Satellite LNBs typically use amplifiers and controllers that oper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/46H02M3/07
CPCG05F1/46G05F1/62H02M3/07
Inventor 戴维·布莱德博瑞
Owner ZETEX SEMICON PLC
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