BPF integrated amplifier module using LTCC technology for millimeter‐wave applications

Abstract

ABSTRACTA compact amplifier module integrating a low‐loss stripline (SL) band‐pass filter (BPF) using low‐temperature cofired ceramic (LTCC) technology is presented for millimeter‐wave (mm‐wave) applications. A parasitic resonance‐free SL BPF is proposed by modifying a distribution of ground vias in the SL LTCC BPF. The SL BPF fabricated in the 6 LTCC layers showed a 3‐dB bandwidth of 8.4% at the center frequency of 41.8 GHz. Its measured insertion and return loss were as small as 1.7 dB and 10.2 dB, respectively. The SL BPF integrated amplifier LTCC module was implemented in the single LTCC substrate in a size of 11.3 × 12.2 × 0.6 mm3. Its gain of 10 dB and output power of 18 dBm is achieved in the pass band from 39.5 to 42 GHz. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1821–1825, 2015