Characterization of RF Micro-Coaxial Cable Insertion Loss Degradation
RF micro-coaxial insertion loss escalates through skin-depth resistance, dielectric loss tangent shifts, mechanical flex displacement, and atmospheric oxidation.
I-PEX MHF
Meaning
Subminiature coaxial connectors facilitate the attachment of antennas to printed circuit boards in compact wireless devices. The i-pex mhf family provides a low profile solution for radio frequency connections in mobile phones and laptops. It uses a snap on mating mechanism that allows for quick assembly without specialized tools.
Frequency support typically extends to six gigahertz or higher to cover wifi and cellular bands.
Mating Height
Vertical space is a primary constraint in modern device integration. The i-pex mhf series offers several versions with different profiles to fit under shields or beside batteries. A low height reduces the risk of the connector interfering with the mechanical enclosure or the screen assembly.
Locking Force
Retention of the signal path depends on the mechanical grip of the outer ground contact. The i-pex mhf plug stays in place through friction and a small physical detent. While it is easy to connect, the force required to pull it off ensures that vibration during transport does not break the circuit.
Signal Integrity
Metal shielding around the entire connection point minimizes the leakage of electromagnetic energy. In a crowded device, the i-pex mhf keeps the antenna signal isolated from nearby digital processors or power regulators. This shielding is necessary for meeting government standards on radio interference and receiver sensitivity.
Because the connector is so small, the precision of the shield contact is the primary factor in maintaining high signal quality across the operating bandwidth.