High-Q LTCC-based passive library for wireless system-on-package (SOP) module development

Abstract-A S-band monolithic integrated switched filter bank has been designed to realize tunable working center frequency, and a tuning range of 12.9% from 2.7 to 3.05 GHz was achieved with interval of 50 MHz. The switched filter bank is designed using 8 eighth-order step impedance resonators (SIR) band-pass filters arranged in parallel rows. Microelectromechanical Systems (MEMS) switched circuit is integrated above filters for monolithic design combined with low temperature co-fired ceramic (LTCC) technology. The SIR bandpass filters are designed to resist Electromagnetic Interference (EMI) between components and introduce cross coupling to bring two transmission zeros and better out-ofband rejection. The monolithic integrated switched filter bank is only 74 mm × 24 mm × 2.5 mm, which realizes the monolithic integration of the device and enhances the reliability. The measured results show that the insertion loss and out-of-band rejection are in good working condition.

Section: Design Of Filter Bankmentioning

confidence: 99%

“…Filter, as an important passive component, is an indispensable part of the RF circuit [1][2][3]. With the development of communication technology, the requirements of the performance about filters are increasing.…”

Section: Introductionmentioning

confidence: 99%

Monolithic Integrated Design of S-Band Switched Filter Bank Based on LTCC Technology

Yang¹,

Ming²,

Guo³

et al. 2017

“…High Q inductors are required for bandpass filters and matching networks. Inductors fabricated in LTCC or M-LCP, can have very high Qs [2,3]. Spiral inductors are very popular because they provide inductances in the order of several nHs [11], in compact sizes.…”

Section: Spiral Inductorsmentioning

confidence: 99%

“…Low Temperature Co-fired Ceramic (LTCC) has been the choice for SoP designs in the recent years. Lumped components implemented in LTCC have demonstrated high quality factors and small form factors [2]. Even though LTCC is a mature technology, it is expensive, non flexible, and inorganic (not environmentally friendly).…”

Section: Introductionmentioning

confidence: 99%

3d Lumped Components and Miniaturized Bandpass Filter in an Ultra-Thin M-LCP for Sop Applications

Arabi¹,

Shamim²

2013

Abstract-In this work, a library of 3D lumped components completely embedded in the thinnest, multilayer liquid crystal polymer (M-LCP) stack-up with four metallization layers and 100 µm of total thickness, is reported for the first time. A vertically and horizontally interdigitated capacitor, realized in this stack-up, provides higher self resonant frequency as compared to a similarly sized conventional parallel plate capacitor. Based on the above mentioned library, a miniaturized bandpass filter is presented for the GPS application. It utilizes mutually coupled inductors and is the smallest reported in the literature with a size of (0.035 × 0.028 × 0.00089)λ g . The M-LCP module presented in this work is inherently flexible and offers great potential for wearable and conformal applications.

“…There have been significant efforts in 3D microwave circuits including filters, resonators, branch-line couplers, antennas, matching circuits, and power splitters on multi-layer integrated circuits [3][4] and growing research activities on the electromagnetic applications of engineered materials such as metamaterials, where the material characteristics can be tailored [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

A Wideband Miniaturized Dipole Antenna on a Printed Circuit Board

Yang¹,

Zhang²

2009

Abstract-This paper investigates a miniaturized resonant antenna that comprises a meandered monopole and a partial ground plane. A bandwidth enhancement is found using the ground plane on the back side of the circuit board where the entire communication system resides. The meandered monopole together with the ground plane forms a wideband dipole antenna. The design shows over 25% 10 dB impedance bandwidth at 2.5 GHz ISM band with a monopole area of 300 mils by 166 mils on a small circuit board and a backside ground plane 1500 mils by 600 mils. The wire length is about one third and the Q factor is about twice as compared against the case of using a straight quarter-wave microstrip monopole. The antenna Q factor as a function of the ground plane area is characterized. The use of circuit ground as a part of an antenna should find useful applications in portable wireless systems. Good agreements are found between simulated and measured antenna gain patterns and return loss.