70 GHz Tx and Rx LCP SoP Module for Point-to-point Millimetre Wave Applications

摘要

In this paper, a 70 GHz Amplitude-Shift-Keying (ASK) transmitter and receiver system-on-package (SoP) module based on a liquid-crystal polymer (LCP) substrate has been presented for point-to-point millimeter-wave communication applications. Two frequency multipliers (MTLs), a driver amplifier (DA), high-gain LNA block, ASK modulator and de-modulator are integrated in each metal-backed LCP substrate. The size of the fabricated transmitter (Tx) and receicer (Rx) SoP module are 30.11 × 22.54 × 2.15mm~3 and 22.95 × 22.54 × 2.15mm~3, respectively. For operation test, using an intermediate frequency (IF) of 20 MHz with ±25 mV and -0.7 V for off-set, frequency spectrum of the Tx and Rx were measured. The output power of the Tx is -10.17 and -11.91 dBm at 72.1 and 74.9 GHz, respectively, by forcing the local oscillation (LO) frequency of 12.017 and 12.48 GHz with 5.0 dBm power. By interconnecting a Tx with Rx module, de-modulated signal pattern is obtained using a oscilloscope.