Title :
A reflection type of MSW signal-to-noise enhancer in the 400-MHz band
Author :
Kuki, Toshinobu ; Nomoto, T.
Author_Institution :
NHK Sci. & Tech. Res. Labs., Tokyo, Japan
Abstract :
We have developed a reflection type of signal-to-noise enhancer operating in the 400-MHz band, which can easily be inserted into the second IF stage used in current DBS receivers. The new enhancer consists of a microstrip line using a ceramic substrate with a high dielectric constant and a LaGa-YIG film with low saturation magnetization. Enhancement of 8 dB was achieved in the 40-MHz bandwidth. We evaluated the effect of the new enhancer on noise reduction in DBS reception and found that the signal-to-noise enhancer achieved 2 to 3-dB noise reduction.<>
Keywords :
UHF filters; direct broadcasting by satellite; garnets; high definition television; lanthanum compounds; magnetic microwave devices; magnetostatic wave devices; microstrip lines; television receivers; video signal processing; yttrium compounds; 2 to 3 dB; 40 MHz; 400 MHz; DBS receivers; IF stage; LaYGGIG; LaYGa5O12Fe5O12; MSW signal-to-noise enhancer; ceramic substrate; dielectric constant; microstrip line; noise reduction; reflection type; saturation magnetization; Bandwidth; Ceramics; Dielectric substrates; High-K gate dielectrics; Microstrip; Noise reduction; Optical films; Reflection; Satellite broadcasting; Saturation magnetization;
Conference_Titel :
Microwave Symposium Digest, 1995., IEEE MTT-S International
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-2581-8
DOI :
10.1109/MWSYM.1995.406085
