Since 1953, North Hills has provided precision leading edge RF components to the OEM. An inherent understanding of the intricacies of high frequency magnetic technology together with the capacity to meet or exceed difficult design parameters has given North Hills an industry-wide reputation for providing high-quality magnetic devices with superior performance characteristics. World-class manufacturing facilities, processes, field experience and pride in workmanship bear testimony to the Company's long success.
- Wideband Transformers:
Wideband transformers match impedances for maximum power transfer or convert single-ended signals to a balance configuration (balun) for transmission of communication signals. Baluns have low transmission loss and superior return loss. See Application Note 159 to learn more about baluns. A wide selection of balanced to unbalanced (Baluns) and unbalanced to unbalanced (Ununs) designs in the 20Hz – 300MHz frequency range are available.
- Wideband Instrumentation
The LBB series, Longitudinal Balance Bridges, facilitate the measurement of balance, Longitudinal Conversion Loss (LCL) and Longitudinal Transverse Conversion Loss (LTCL) per ITU-T Recommendation O.9. The RLB, RLC, and RLT series of Return Loss Bridges are used to measure the impedances of various devices and networks. Both product lines are designed for use with 50 or 75 ohm network analyzers. See the appropriate data sheet and application notes to find the suitable devices for your application.
- Video Isolation:
“Humstoppers” and “Humbuckers ” prevent interference with video and data transmission due to pickup and potential differences between remote grounds. If picture quality is an issue, check out North Hills DC-isolated "Humstoppers" for power-line isolation and DC-coupled "Humbuckers" for common mode noise elimination.
North Hills now manufactures RoHS compliant versions of our Wideband Transformers. To order a RoHS compliant Wideband Transformer simply add the letters LF at the end of the model number. For example: North Hills balun transformer 0300BB-LF is a RoHS compliant product.
The following links were created in Adobe® PDF format. CLICK HERE to download the free Adobe Reader. The PDF files below are between 500k and 1Mb in size.
- 151. Wideband Transformers
- 152. Wideband Transformer Characteristics
- 153. Ground Isolation in Video Transmission
- 155. Tables and Formulas for Return and Transmission Loss
- 156. Measurement of Longitudinal Balance
- 157. Return Loss Bridges
- 158. Ground Isolation when the Video Feed has a DC Component
- 159. Balun Measurements
- 160. Two-Port Balanced Networks Measurements
- 162. Testing VDSL Network End Service Splitters
- 163. Testing VDSL Remote Customer End Service Splitters
The North Hills Wideband On-line Store facilitates convenient quick-response purchases of our popular stock items.