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InP HBT voltage-controlled oscillator based on coupled transmission lines

A technology for coupling transmission lines and voltage-controlled oscillators, applied to power oscillators, electrical components, etc., to achieve the effects of reducing layout area, overcoming poor noise characteristics and frequency characteristics, and widening the frequency modulation range

Active Publication Date: 2017-01-11
拓尔微电子股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The voltage-controlled oscillator proposed by the present invention not only effectively improves the oscillation frequency, but also improves the phase noise performance, and can realize voltage-controlled oscillation frequency modulation without using a varactor, and can obtain a wider frequency modulation range

Method used

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  • InP HBT voltage-controlled oscillator based on coupled transmission lines
  • InP HBT voltage-controlled oscillator based on coupled transmission lines
  • InP HBT voltage-controlled oscillator based on coupled transmission lines

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] refer to figure 1 The present invention is described in further detail.

[0018] The invention includes a bias unit, an oscillation unit, and a steady current resistor R1. The bias unit consists of two DC voltage sources and a bias resistor, which are used to provide the bias voltage and tuning voltage of the voltage-controlled oscillator. The first output end of the bias unit is connected to the first input end of the oscillation unit, and the second output end of the bias unit is connected to the second input end of the oscillation unit. The oscillation unit is composed of two transistors using InP HBT device technology and two coupled transmission lines, which are used to realize signal amplification, loop oscillation and signal output. The first input end of the oscillation unit is connected to the first output end of the bias unit, the second i...

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Abstract

The invention discloses an InP HBT voltage-controlled oscillator based on coupled transmission lines. The InP HBT voltage-controlled oscillator comprises a bias unit, an oscillating unit and a ballast resistor R1. Two coupled transmission lines are introduced to the oscillating unit as resonant elements of the voltage-controlled oscillator to realize voltage-controlled oscillation and variable voltage tuning. The voltage-controlled oscillator provided by the invention uses the coupled transmission lines to replace a DC blocking capacitor, so that the problem of frequency degradation caused by a parasitic effect of the DC blocking capacitor in a voltage-controlled oscillator of a cross coupling structure is solved, and the oscillation frequency is improved. The InP HBT voltage-controlled oscillator based on the coupled transmission lines provided by the invention can realize voltage-controlled oscillation frequency modulation without using a varactor, and can obtain a relatively wide frequency modulation range; and besides, the InP HBT voltage-controlled oscillator does not use the varactor, so that the problems in the prior art that the frequency modulation range is narrow due to the limitation of the varactor technology and the layout area is increased are overcome.

Description

technical field [0001] The invention belongs to the technical field of electron physics, and further relates to an InP HBT voltage-controlled oscillator based on a coupled transmission line in the technical field of microelectronics. The invention can be applied to a radio frequency transceiver system and a millimeter wave phase-locked loop system to provide the required frequency source for the system. Background technique [0002] A voltage-controlled oscillator is an electronic oscillation circuit that uses a voltage input to control the oscillation frequency, and is an important component of a frequency generation source. It is widely used in radio frequency transceiver system, satellite communication terminal, digital wireless communication, base station, radar, medical treatment and other fields. In engineering practice, the performance of the voltage-controlled oscillator has a decisive impact on the performance of the entire system, especially in terms of noise and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B5/32
CPCH03B5/32
Inventor 吕红亮葛玮璠张义门张玉明武岳
Owner 拓尔微电子股份有限公司
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