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Adaptive bias circuit and voltage stabilizing circuit

A technology of self-adaptive biasing and voltage-stabilizing circuit, applied in the direction of adjusting electrical variables, instruments, control/regulating systems, etc., can solve the problems of large load resistance voltage ratio, small voltage margin, large working current of radio frequency modules, etc. Ease of testing and tuning

Inactive Publication Date: 2013-12-18
NATIONZ TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Considering that RFIC has high requirements on gain, linearity, and noise performance, the operating current of RF modules is generally large (at least mA level), so the load resistor voltage accounts for a large proportion
Considering the process, temperature change, and signal swing, the voltage margin is very small, and the performance of the traditional module structure is very poor in practical applications.

Method used

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  • Adaptive bias circuit and voltage stabilizing circuit
  • Adaptive bias circuit and voltage stabilizing circuit
  • Adaptive bias circuit and voltage stabilizing circuit

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Embodiment 2

[0035] like Image 6 Shown is the voltage stabilizing circuit of this embodiment, the voltage stabilizing circuit includes the opposite end circuit and the adaptive bias circuit as described in Embodiment 1, the adaptive bias circuit transmits the control signal to the opposite end circuit, the opposite end circuit according to This control signal adjusts the voltage across its own load resistance.

[0036] like Figure 7 As shown, the opposite end circuit in the voltage stabilizing circuit of this embodiment may include a load resistor and a circuit unit; one end of the load resistor is connected to the voltage V1, and the other end is connected to the circuit unit; the other end of the circuit unit is grounded; the circuit unit Used to receive the control signal and adjust the voltage of the load resistor. The circuit unit may include a current source and an active circuit; one end of the active circuit is connected to the load resistor, and the other end is connected to t...

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PUM

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Abstract

The invention discloses an adaptive bias circuit and a voltage stabilizing circuit. The adaptive bias circuit comprises a detection unit and a feedback control unit. The detection unit is used for detecting electrical parameters of a load resistor in an opposite terminal circuit and generates and transmits corresponding electrical signals to the feedback control unit. The feedback control unit is used for generating controls signals according to the electrical signals and transmitting the control signals to the opposite terminal circuit. The control signals are used for adjusting voltage of the load resistor in the opposite terminal circuit. The adaptive bias circuit allows voltage drop of the load resistor to be constant and insusceptible to circuit environments.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an adaptive bias circuit and a voltage stabilizing circuit. Background technique [0002] In recent years, wireless and mobile communication systems have developed rapidly, and as a key module, radio frequency integrated circuits (RFICs) have naturally become a research hotspot. The RFIC realized by CMOS process began to recover in the mid-1990s. With the reduction of device feature size, the performance of MOS devices has been continuously improved. The RFIC designed by using CMOS process has achieved good radio frequency performance. The advantages of low cost, high integration and low power consumption make CMOS RFIC become the mainstream. [0003] Although silicon CMOS technology has many advantages mentioned above, it also brings some challenges to RFIC with the proportional reduction of device size, which brings many difficulties to circuit design, especially the redu...

Claims

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Application Information

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IPC IPC(8): G05F1/56
Inventor 蔡新午张立国
Owner NATIONZ TECH INC