Coplanar T-Junction C_TEE

Notes :

Without utilizing airbridges, odd mode waves will be excited at the discontinuity and destroy the desired circuit behavior. This becomes evident in the curves of S₁₁. At the T-junction with airbridges the odd waves will be suppressed, so that an excellent agreement between measurement and simulation can be achieved. A slightly increasing deviation of the curves with higher frequencies results from the calculated static e_eff, which is a dispersive parameter. In this example there are no obvious differences in the circuit behavior, if we use airbridges of type 1 or 2.

Configuration: T-junction with resonator stub utilizing 50W1 CPW configuration; stub length = 3mm; feed line length = 1mm; no airbridges used

Configuration: T-junction with resonator stub utilizing 50W1 CPW configuration; stub length = 3mm; feed line length = 1mm; 3 airbridges used at the nodes of the T-junction with the parameter: TYPE=2, bg=8, BW=50, BS=14mm

Configuration: T-junction with resonator stub utilizing 50W1 CPW configuration; stub length = 3mm; feed line length = 1mm; 3 airbridges used at the nodes of the T-junction with the parameter: TYPE=1, bg=14, BW=50, BS=8mm

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