A Narrowband Low Noise Amplifier for Passive Imaging Systems

作者：Mehdi Ghulam^*; Hu Anyong; Miao Jungang

来源：10th International Bhurban Conference on Applied Science and Technology (IBCAST), 2013-01-15 to 2013-01-19.

• Millimeter-wave (MMW)
• Low noise amplifier
• bond-wire
• noise figure

The design of a narrowband low noise amplifier (LNA) module at Ka band is presented. A low noise MMIC ehip fabricated in GaAs pHEMT process is employed. Since the LNA is narrowband, its matching is sensitive to parasitie associated with the bond-wire interconnects and the fixture connectors. A T-type matching network which comprises of a high-low impedance lines is realized on microstrip substrate to nullify the bond-wires inductance. The planar structures in the design are simulated in ADS Momentum (R) while the bond-wires are modeled in a FEM based full-wave simulator. The design, assembly and packaging of the module are described. The measured results exhibit 23.5 dB gain at 35 GHz frequency. The 1: 2 VSWR bandwidth is 2 GHz. The measured noise figure is 3.5 dB.

• 出版日期2013
• 单位北京航空航天大学