Bias Tees, 0.1~26.5GHz, SMA

This product is a high-performance, ultra-broadband DC bias tee, operating from 0.1 to 26.5GHz. It features robust SMA connectors and is designed for demanding microwave RF circuit testing and system integration. It efficiently and seamlessly combines RF signals with DC bias power, making it an essential passive component in modern laboratories, aerospace, communications, and defense electronics systems.

Characteristics:

1. Ultra-broadband operation: Its core advantage is the extremely wide frequency band, covering from 100MHz to 26.5GHz, fully supporting almost all common frequency bands achievable with SMA interfaces, including high-end applications such as 5G, satellite communications, and millimeter-wave testing.
2. Very low insertion loss: The RF path exhibits very low insertion loss across the entire frequency band, ensuring high-frequency signal transmission efficiency and integrity while minimizing impact on the performance of the device under test or the system.
3. Excellent isolation: Utilizing high-performance blocking capacitors and RF chokes internally, it achieves high isolation between the RF port and the DC port. This effectively prevents RF signal leakage into the DC supply and avoids noise from the DC supply interfering with the RF signal, ensuring measurement accuracy and system stability.
4. High power handling & stability: The DC port can handle up to 700mA of continuous current and features overcurrent protection capability. Housed in a metal case, it offers good shielding effectiveness, mechanical strength, and thermal performance, ensuring long-term stable operation even in harsh environments.
5. Precision SMA connectors: All RF ports use standard SMA-Female connectors, providing reliable contact, low VSWR, good repeatability, and suitability for frequent connections and high-precision test scenarios.

Applications:

1. Active device testing: Widely used in testing microwave transistors and amplifiers such as GaAs FETs, HEMTs, pHEMTs, and MMICs, providing precise, clean bias voltage to their gates and drains, while enabling on-wafer S-parameter measurements.
2. Amplifier module biasing: Serves as a standalone bias network in the development and system integration of modules like low-noise amplifiers, power amplifiers, and driver amplifiers, simplifying circuit design and saving PCB space.
3. Optical communication & laser drivers: Used to provide DC bias for high-speed optical modulators, laser diode drivers, etc., while transmitting high-speed RF modulation signals.
4. Automated test systems (ATE): Due to its broad bandwidth and high reliability, it is ideally suited for integration into ATE systems for automated, high-volume testing of complex microwave modules such as T/R modules and up/down converters.
5. Research & education: An ideal tool for microwave circuit and system experiments in universities and research institutes, helping students understand the design principles of coexisting RF and DC signals.

Qualwave Inc. provide bias tees with different connectors in Standard / High RF Power / Cryogenic versions to meet diverse customer needs. The frequency range can cover up to 16kHz to 67GHz at its widest. This article introduces a 0.1~26.5GHz SMA bias tee.