Title :
Transmission and reception of high fidelity sound in buildings using surface transverse wave based 1 GHz FM radio
Author :
Avramov, Ivan D.
Author_Institution :
Inst. of Solid State Phys., Sofia, Bulgaria
Abstract :
A new system application of shear horizontal (SH) acoustic wave devices as extended cavity high-𝒬 surface transverse wave (STW) resonators, low-𝒬 surface skimming bulk wave (SSBW) resonators, and SSBW/STW combined mode resonator filters (CMRFs) is presented. Frequency modulated (FM) microtransmitters are implemented in a 1-GHz multichannel local area radio network (LARN) for wireless transmission and reception of high-fidelity sound in buildings with transmitted radio frequency (RF) power levels of up to 10 dBm/channel and a standard FM radio bandwidth of 150 kHz. The system consists of several stand-alone microtransmitters operating in the frequency range of 1001-1003 MHz and modulated from different sources as satellite receivers, and of single or double conversion superheterodyne personal receivers with reception bandwidths of 2 or 20 MHz, respectively
Keywords :
local area networks; radio networks; radio transmitters; surface acoustic wave devices; 1001 to 1003 MHz; 150 kHz; FM radio; SSBW/STW combined mode resonator filters; extended cavity STW resonators; high fidelity sound; microtransmitters; multichannel local area radio network; power levels; reception bandwidths; shear horizontal acoustic wave devices; superheterodyne personal receivers; surface skimming bulk wave; surface transverse wave; Acoustic waves; Bandwidth; Frequency conversion; Frequency modulation; Radio frequency; Radio network; Receivers; Resonator filters; Satellite broadcasting; Surface acoustic wave devices;
Conference_Titel :
Ultrasonics Symposium, 1992. Proceedings., IEEE 1992
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0562-0
DOI :
10.1109/ULTSYM.1992.276026
