CST – Computer Simulation Technology

Connectors Library

The Connectors library contains a number of common coaxial RF connectors that might be used when modeling antennas. For each connector type, parametric export models are available for supported CEM tools. For some connectors the option exists to select between different types (e.g. panel-mount or edge mount) in Export mode.

Here is a brief look at a few of the connectors in the library:


1. SMA (SubMiniature version A)

1 SMA Female PCB type connector.

This 50 Ω SMA connector uses a PTFE (polytetrafluoroethylene) dielectric and offers excellent electrical performance from DC to 12.4 GHz (for flexible cables) and DC to 18 GHz (for semi-rigid cables). Above this frequency and up to 34 GHz, SMA-like 3.5 mm connectors are used - which can be mated to standard SMA connectors.

1 SMA 2 hole female panel mount with extended PTFE....

2. N-Type

1 N-Type 4 hole panel mount Jack with extended dielectric.

The N-type connector dates back to 1940 and was one of the first connectors capable of carrying microwave-frequency signals. The standard upper operating frequency is 11 GHz and some connectors are extended to operate at 18 GHz.

The above image shows an N-Type 4 hole panel mount Jack connector with extended dielectric, typically used to feed a cavity or waveguide.

3. MMCX (Micro-Miniature Coaxial)

1 MMCX PCB Jack connector.

MMCX connectors were developed in the 1990s and are similar, but smaller, than MCX connectors. These connectors are most commonly used in Wi-Fi PCMCIA cards as antenna connectors, or as external GPS antenna connectors on small devices. They use a snap-lock mechanism, allowing 360 ° rotation, usually with 50 Ω impedance and have good electrical performance from DC to 6 GHz.

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