A 900 MHz SAW microstrip antenna-duplexer for mobile radio

A novel, 900-MHz SAW (surface acoustic wave) microstrip antenna-duplexer designed for use in European mobile radio systems is presented. The duplexer consists of a transmitter SAW filter, two receiver SAW filters, a low-noise receiver amplifier, and a duplexing microstrip circuit. A dual-track filter design using interdigital transducers for track coupling provides low insertion loss (5 dB), small passband ripple ($^\textrm\textbackslashcirc\$$-rotated YX-LiTaO3 substrates with a photolithographic technique. Due to the design of the microstrip duplexer, the selectivity of the front end is enhanced by 15 dB     «

A novel, 900-MHz SAW (surface acoustic wave) microstrip antenna-duplexer designed for use in European mobile radio systems is presented. The duplexer consists of a transmitter SAW filter, two receiver SAW filters, a low-noise receiver amplifier, and a duplexing microstrip circuit. A dual-track filter design using interdigital transducers for track coupling provides low insertion loss (5 dB), small passband ripple ($^\textrm\textbackslashcirc\$$-rotated YX-LiTaO3 substrates with a photolithograph...     »

multiplexing equipment, LiTaO3, surface acoustic wave filters, 900 MHz, UHF, interdigital transducers, mobile radio, mobile radio systems, microstrip antennas, photolithographic technique, 5 dB, low insertion loss, -rotated YX-LiTaO3 substrates, 36$^\textrm\textbackslashcirc\$$, dual-track filter design, duplexing microstrip circuit, European mobile radio systems, high stopband rejection, low-noise receiver amplifier, microstrip duplexer, receiver SAW filters, SAW microstrip antenna-duplexer, selectivity, small chip-size, small passband ripple, TO-39 package, track coupling, transmitter SAW filter     «

multiplexing equipment, LiTaO3, surface acoustic wave filters, 900 MHz, UHF, interdigital transducers, mobile radio, mobile radio systems, microstrip antennas, photolithographic technique, 5 dB, low insertion loss, -rotated YX-LiTaO3 substrates, 36$^\textrm\textbackslashcirc\$$, dual-track filter design, duplexing microstrip circuit, European mobile radio systems, high stopband rejection, low-noise receiver amplifier, microstrip duplexer, receiver SAW filters, SAW microstrip antenna-duplexer, se...     »