Recently, temperature compensation of surface and bulk acoustic wave (SAW/BAW) technologies has become a topic of interest due to strong demand on wideband filters with excellent temperature stability. Two types of techniques are studied extensively. One is the wafer bonding of a piezoelectric substrate with a support substrate, which have large Young's modulus and small thermal expansion coeff...

The lack of integrated design tools for Surface Acoustic Wave (SAW) devices has led us to develop tools for the design, modeling, analysis, and automatic layout generation of SAW devices. These tools enable rapid development of wireless SAW sensors. The tools developed have been designed to integrate into existing Electronic Design Automation (EDA) tools to take advantage of existing 3D modelin...

Spectrum Microwave offers a wide range of high-quality standard and custom SAW filter product solutions, designed and manufactured utilizing state of the art semiconductor fabrication techniques. The company’s flexible approach, high volume capability and worldwide support makes Spectrum Microwave the SAW filter supplier of choice for RF engineers in many of the world’s leading communications a...

1 We consider the problem of jointly allocating channel centerfrequencies and bandwidths for IEEE 802.11 wireless LANs (WLANs). The bandwidth used on a link significantly affects both the capacity experienced on this link and the interference produced on neighboring links. Therefore, when jointly assigning both center frequencies and channel widths, a trade-off must be found between interferenc...

An effective technique for mixer LO harmonic rejection in a SAW-less wideband receiver front-end is proposed. The proposed technique provides a tunable notch that can be placed at any frequency like mixer LO harmonics, to avoid the aliasing in baseband after mixing. An analog LC notch is used in a cascode transconductor, and it can reject one of the 3rd or 5th harmonics. T...

Seamless continuity is the main goal and challenge in fourth generation Wireless networks (FGWNs), to achieve seamless connectivity “HANDOVER” technique is used, Handover mechanism are mainly used when a mobile terminal(MT) is in overlapping area for service continuity. In Heterogeneous wireless networks main challenge is continual connection among the different networks like WiFi, WiMax, WLAN,...