Low-loss air suspended radially combined patch for N-way RF swit

Details Low-loss air suspended radially combined patch for N-way RF swit Low-loss air suspended radially combined patch for N-way RF swit

1998-01-06

1999-11-16

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333262, H01P 115

Patent

active

059865172

ABSTRACT:
A microstrip switch includes N-input switch arms and an output port formed from a microstrip transmission line. Each input switch arm includes one or more p-i-n diodes. The input switch arms as well as the output port are connected at a radially combined center patch. In order to improve the insertion losses at millimeter wave frequencies, the center patch is air suspended in order to reduce the parasitic shunt capacitance in order to extend the low pass frequency response of the switch.

REFERENCES:
patent: 3223947 (1965-12-01), Clar
patent: 3597706 (1971-08-01), Kibler
patent: 4127830 (1978-11-01), Chalifour et al.
patent: 4302734 (1981-11-01), Stockton et al.
patent: 4525689 (1985-06-01), Wagner et al.
"Micromachined Coplanar Waveguides in CMOS Technology" by V. Milanovic, M. Gaitan, E. Bowan and M. Zaghloul, iie. Microwave and Guided Wave Letters, vol. 6, No. 10, Oct. 1996, pp. 380-382.

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