Abstract
A compact self-packaged dual-band filter structure using multilayer liquid crystal polymer technology is presented in this paper. The frequency and bandwidth of each passband can be more conveniently controlled by means of vertically embedded elements, i.e., metal patches, placed above the coupled folded multi-stepped impedance resonators. The packaged solution is connected to the outer environment through a coplanar waveguide that allows flip-chip interconnection to a host board. The proposed design is validated with the fabrication of two prototypes. The measured results show good agreement with the simulations.
Highlights
A S wireless communications penetrate more and more in our daily lives, different systems and transmission technologies have to be developed to fit them properly
The resonant modes are split by means of inter-resonator coupling in order to control the bandwidth
In [10], only one ring resonator is used to produce the two passbands. In this case the split of each resonant mode is obtained by a pair of open-circuited stubs attached to the resonator
Summary
A S wireless communications penetrate more and more in our daily lives, different systems and transmission technologies have to be developed to fit them properly. As an example, often integrate technologies like WiFi, Bluetooth, GSM, or GPS. Each of these services has receivers/transmitters operating in different frequencies that have to be accommodated in a small, portable device. In [10], only one ring resonator is used to produce the two passbands In this case the split of each resonant mode is obtained by a pair of open-circuited stubs attached to the resonator. Even though it has the advantage of using only one resonator, it has the limitations of a small frequency ratio between the passbands. The use of four resonators is reported in [8], [9]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
