✦ LIBER ✦

Wideband bandpass filter using unpowered HEMT amplifiers

✍ Scribed by Yong Kyu Kim; Sung Woo Hwang

Book ID: 102517078
Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 486 KB
Volume: 50
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.23623

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A wideband bandpass filter using unpowered, packaged HEMT amplifiers is proposed and implemented. The key idea is to utilize very small parasitic capacitances of the unpowered HEMT as a part of the feedback loop connecting LC resonators. At the input power of −10 dBm, the 3 dB bandwidth of the fabricated bandpass filter is 93.6% of the center frequency (1.536 GHz). Furthermore, our filter does not show appreciable spurious up to 12 GHz. These internal capacitances of the HEMT extracted from the equivalent circuit modeling are shown to be in the range of 10–500 fF. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2197–2200, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23623

📜 SIMILAR VOLUMES

Wideband bandpass filter using microstri

Wideband bandpass filter using microstrip ring

✍ Dong-Jin Jung; Jung-Kyu Lee; Kai Chang 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 198 KB

## Abstract A simple design for a wideband bandpass filter is presented.A compact filter structure is achieved by placing a microstrip ring between two parallel coupling gaps. 3D electromagnetic simulation and measurement of the proposed filter validate its wideband characteristics. The proposed fi

Wideband bandpass filter using symmetric

Wideband bandpass filter using symmetric multimode resonator

✍ Feng, W.J.; Zhou, J.G.; Che, W.Q. 📂 Article 📅 2012 🏛 The Institution of Electrical Engineers 🌐 English ⚖ 235 KB

Wideband Parallel-Strip Bandpass Filter

Wideband Parallel-Strip Bandpass Filter Using Phase Inverter

✍ Ka Wai Wong; Leung Chiu; Quan Xue 📂 Article 📅 2008 🏛 IEEE 🌐 English ⚖ 558 KB

Compact dual-wideband bandpass filter us

Compact dual-wideband bandpass filter using asymmetrical resonator

✍ Tu, W.-H.; Hsu, K.-W.; Chien, C.-H. 📂 Article 📅 2013 🏛 The Institution of Electrical Engineers 🌐 English ⚖ 308 KB

Compact ultra-wideband bandpass filter u

Compact ultra-wideband bandpass filter using defected ground structures

✍ J. K. Lee; Y.-S. Kim 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 181 KB

## Abstract In this letter, a compact ultra‐wideband (UWB) bandpass filter (BPF) is presented with improved upper stopband performance using six defected ground structures (DGS).The proposed BPF is composed of seven DGSs which are positioned under the input and output microstrip line and coupled do

Design of LTCC wideband bandpass filter

Design of LTCC wideband bandpass filter using semilumped resonators

✍ Qian, K.W.; Tang, X.H. 📂 Article 📅 2011 🏛 The Institution of Electrical Engineers 🌐 English ⚖ 251 KB