多頻道多標準無線通訊系統關鍵射頻技術之研發(I) 子計畫二： 多頻道、多標準、低成本共生式濾波器之設計與發展(I)
Date Issued
2005-07-31
Date
2005-07-31
Author(s)
莊晴光
DOI
932219E002027
Abstract
Advances in wireless communication
have transformed the radio industry toward
consumer electronics. Nevertheless the
improvement over quality of service (QoS)
behind the modern wireless services have
resulted in increasing complexity in RF
electronics including active and passive
circuitry. One trend toward increasing
spectral efficiency and QoS is the adoption
of multiple-input and multiple-output
(MIMO) communication system, in which
plural of antennas and RF electronics are
arranged appropriately in accordance with
the vector signal generator and vector signal
processor at the transmitter and receiver ends,
respectively.
This project aims specifically for a
generic solution for RF filtering in the
complicated event of RF transceiver system
acquiring multiple standards and multiple
frequency bands, thus with sophisticated
filter frequency planning and design
procedure involved in practical RF filtering
electronics.
The project is divided into three-year.
The concept of frequency-selective resonator
(FSR) was proposed at sub-project II in the
first year. The FSR, which is realized by the
microstrip on the electromagnetic bandgap
(EBG) ground plane, can greatly simplify the
multiplexed filter bank into a so-called
coalesced single-input and single-output
architecture. First year will devote most of
efforts to consolidate the concept of FSR for
streamline multi-band filter design. The
following year focuses on several coalesced
filter architecture designs that may be promising for multi-standard or MIMO
applications. However, the evolution of the
multi-mode system reveals that the
components in MIMO system are designed
based on only signal band operation for
maintaining the same system performances.
Therefore, the sub-project II focused on the
miniaturized RF filter realization followed by
the proposed systematic design procedures.
The procedures not only can be applied for
realizing front-end module (FEM) design but
also assist to define the architecture for the
system integrations.
Subjects
Electromagnetic bandgap
miniaturized RF filter
front-end
module
module
Publisher
臺北市：國立臺灣大學電信工程學研究所
Type
report
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