一种频率与带宽可调的可重构射频滤波器芯片

A Reconfigurable Radio Frequency Filter MMIC with Frequency and Bandwidth Tuning Ability

中文关键词:  可重构滤波器  信道化结构  砷化镓赝晶高电子迁移率晶体管  微波单片集成电路

英文关键词:reconfigurable filter  channelized structure  gallium arsenide pseudomorphic high electron mobility transistor  microwave monolithic integrated circuit

中文摘要:

      本文基于0. 25 μm砷化镓赝晶高电子迁移率晶体管工艺设计实现了一款频率与带宽皆可调的有源可重构滤波器芯片。该滤波器采用了双通道信道化拓扑结构,每个通道由两级可调谐振器与三级宽带放大器交叉级联构成,通过对通道内各级谐振器频率的同步和异步控制,实现对滤波器的频率与带宽的调谐,通过不同工作频段的通道间切换组合,实现了频率的宽范围调谐。 为了验证该设计的有效性,完成了该滤波器的流片,其尺寸为3. 1 mm×3. 0 mm。 经实测,该滤波器通带中心频率可在2. 52 GHz~ 3. 92 GHz之间进行调谐,频率调谐比达到了54%,通道内带宽可实现350 MHz ~ 1 080 MHz之间的变化,相对带宽可调范围为12%~ 33%,同时具备了频率和带宽的宽范围调控能力。

英文摘要:

      In this paper, an active reconfigurable filter chip with tunable frequency and bandwidth is designed and implemented based on 0. 25 μm gallium arsenide pseudo orphic high electron mobility transistor process. The channelized filter structure with two channels are adopted in this filter topology. In each channel, a cascaded form of three stages wideband amplifiers and two stages tuning resonance networks is employed. The tuning of frequency and bandwidth is implemented by synchronous and asynchronous control of the resonance networks frequencies in the channel, and the wide tuning ratio of center frequency is achieved through the switching combination of the channels with different working frequencies. In order to verify the effectiveness of the design, the filter chip is fabricated, and the chip size is 3. 1 mm×3. 0 mm. The experimental results show that the tuning range of center frequency is 2. 52 GHz ~ 3. 92 GHz, and the frequency tuning ratio reaches 54%. The bandwidth in the channel can be changed between 350 MHz ~ 1 080 MHz, and the relative bandwidth tuning range is 12% ~ 33%. The wide range tuning abilities of frequency and bandwidth are demonstrated in the reconfigurable filter chip.