Broad-Band UHF Distributed Amplifiers Using Band-Pass Filter Techniques

1960 ◽  
Vol 7 (5) ◽  
pp. 8-17 ◽  
Author(s):  
F. Thompson
Keyword(s):  
Broad Band ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Distributed Amplifiers ◽  
Band Pass

Design of a compact broad band-pass filter using parallel coupled structure

2008 ◽  
Author(s):  
Ki-Cheol Yoon ◽  
Seung-Yeon Oh ◽  
Hyunwook Lee ◽  
Kyoung-Min Oh ◽  
Jong-Chul Lee
Keyword(s):  
Broad Band ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Band Pass

The Wedged Transducer — A Transducer Design for Broad Band Characteristics

1979 ◽  
Vol 1 (1) ◽  
pp. 76-88 ◽  
Author(s):  
Gerard A. Alphonse
Keyword(s):  
Insertion Loss ◽  
Acoustic Impedance ◽  
Broad Band ◽  
Wedge Angle ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Reflected Wave ◽  
Actual Load ◽  
Transducer Design ◽  
Band Pass

This paper presents a method of increasing the bandwidth of transducers feeding low acoustic impedance loads such as fluids and of electrically matching them over the full bandwidth. It consists of interposing between the transducer and the actual load, a wedge made out of a material having the desired acoustic impedance. The wedge angle is chosen such that no reflected wave from the wedge-load interface can return to the transducer. In this manner, the effective load seen by the transducer is that of the wedge itself, regardless of the actual load. The appropriate electrical matching is achieved by means of a hybrid band pass filter containing both electrical and mechanical components, with the transducer as an integral part. Experimental results on a 4-inch diameter PZT-4 transducer, coupled to water through a brass wedge, demonstrate a bandwidth of 75 percent and an insertion loss of 8.5 dB, well in accordance with theory. Without the wedge, the bandwidth would be only 3.2 percent.

scholarly journals Dual-Band Compact Broad Band-Pass Filter with Parallel Coupled Line

2010 ◽  
Vol 21 (12) ◽  
pp. 1423-1431
Author(s):  
Young-Gu Choi ◽  
Bhanu Shrestha ◽  
Ki-Cheol Yoon ◽  
Jeong-Hun Lee ◽  
Tae-Ui Hong
Keyword(s):  
Broad Band ◽  
Dual Band ◽  
Band Pass Filter ◽  
Coupled Line ◽  
Pass Filter ◽  
Band Pass
Sign in / Sign up

Export Citation Format

Share Document