Full Bandpass Filter Reconfigurability Through Liquid Metal Tuning and a Novel External Coupling Technique

被引：0
作者：
Pham, Alex [1 ]
Sigmarsson, Hjalti H. [2 ,3 ]
机构：
[1] Univ Colorado Boulder, Sch Elect Comp & Energy Engn, Boulder, CO 80309 USA
[2] Univ Oklahoma, Sch Elect & Comp Engn, Norman, OK 73019 USA
[3] Univ Oklahoma, Adv Radar Res Ctr, Norman, OK 73019 USA
来源：
IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS | 2024年 / 34卷 / 11期
关键词：
Band-pass filters; Microwave filters; Resonator filters; Tuning; Couplings; Bandwidth; Filtering theory; External coupling tuning; liquid metal; reconfigurable filter; substrate integrated waveguide (SIW); tunable filter;
D O I：
10.1109/LMWT.2024.3457965
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
An innovative filter design with full independent control of the center frequency, bandwidth, and response ripple is demonstrated utilizing only liquid-metal actuation. This is realized on substrate-integrated waveguide (SIW) technology with tunable evanescent cavity resonators coupled by an adaptable inductive iris design. A novel external coupling mechanism utilizing liquid-metal tuning posts on the filter input/output is presented. The fully reconfigurable filter design has a center frequency tuning range of 4.5-5.6 GHz with bandwidths ranging from 198 to 599 MHz. The response shape is reconfigurable between Butterworth and equi-ripple responses at all frequency and bandwidth states. Agreement between experimental results and simulation validate the effectiveness of this highly reconfigurable filter design and the capabilities of liquid metal for adaptive coupling mechanisms.
引用
收藏
页码：1231 / 1234
页数：4
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