𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A 2.4-GHz bandpass filter for flexible RF applications

✍ Scribed by Jin-Sup Kim; Kyu-Bok Lee; Jae-Young Lee; Ho-Jun Lee; Hyunchol Shin

Book ID
102518293
Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
378 KB
Volume
54
Category
Article
ISSN
0895-2477

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A 2.4‐GHz bandpass filter is implemented on a flexible printed circuit board with a thickness of 127 μm for wearable RF applications.The bandpass filter is realized in a double‐sided structure, of which the top side provides the main filtering characteristics using two coupled resonators and the bottom side provides efficient signal feeding and coupling using mixed coupling scheme. The mixed coupling scheme combining the broadside‐ and cross‐coupling structures is advantageous to improve the insertion loss. The filter characteristics when bended by up to 90° are simulated using a three‐dimensional electromagnetic simulation tool and experimentally verified. Measurement results show that the insertion loss is less than 1 dB and the return loss is less than 26 dB across the total passband from 2.4 to 2.5 GHz. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:384–387, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26588

📜 SIMILAR VOLUMES

A compact meandering bandpass filter wit
A compact meandering bandpass filter with dual passband performance for 2.4/5.7 GHz WLANs
✍ Hon Kuan 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 406 KB

## Abstract In this letter, a compact dual‐band bandpass filter (BPF) using the meandering stepped impedance resonators (MSIRs) for the wireless local area networks (WLANs) is proposed. The dual‐band performance of the BPF is adjusted by the physical length (α) and impedance ratio (K) of the MSIRs.

A fully integrated 2.4 GHz CMOS RF trans
A fully integrated 2.4 GHz CMOS RF transmitter for 802.15.4 ZigBee applications
✍ Yun Seong Eo; Hyun Jin Ryu; Sang-Shin Lee; Kyu Don Choi; Dong Hyun Baek 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 273 KB

## Abstract A fully integrated 2.4 GHz direct up conversion RF transmitter compliant with low‐power ZigBee (IEEE 802.15.4) standard is presented. The linear and gain controlled current mirror amplifier is used for up conversion mixer. It consumes 8 mA with 1.8‐V power supply. The obtained transmitt

A low-noise mixer with an image-reject n
A low-noise mixer with an image-reject notch filter for 2.4 GHz applications
✍ Nam-Jin Oh 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 688 KB

This paper presents a low noise first down-conversion mixer with a notch filter for the heterodyne receiver. The notch filter connected to the output node of the mixer driver stage plays a role of image rejection at an image frequency, thereby suppressing the sideband image noise and improving the m