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Wideband Transformers

From North Hills Signal Processing
 

 

Wideband transformers couple signals magnetically from input to output terminals with optimum transmission fidelity over broad frequency ranges. Major objectives in their use are:

1. Impedance matching for maximum power transfer
2. Coupling between unbalanced and balanced circuits
3. DC isolation between input and output
4. Ground isolation for common mode rejection
5. Signal distribution and mixing

Baluns are transformers designed to interface balanced and unbalanced circuits. In an "unbalanced" or "single ended" system the "LO" side is at AC ground.
In a balanced circuit the mid-point between terminals is at AC ground; i.e., the voltages either both terminal and ground are 180 degrees out of phase. Unbalanced and balanced windings have identical schematic representations but differ very much structurally. It is, therefore, not possible to ground the "HI" instead of the "LO" side of an unbalanced winding or to convert a balanced winding into an unbalanced one by simply grounding one side without radically affecting the transmission characteristics of the transformer.

Products & Services
RF transformers transfer energy from one circuit to another by electromagnetic induction. Typically, they are used to increase or decrease voltage as it passes from one side through the other. Search by Specification | Learn more about RF Transformers
Signal transformers transfer information from one circuit to another by electromagnetic induction. They are used to increase or decrease the voltage from one side of a power transformer to the other. Search by Specification | Learn more about Signal Transformers
Product Announcements
North Hills Signal Processing - Balun Transformers - General Purpose (1kHz-125MHz)
A complete line of balun transformers to match 50 and 75 ohm unbalanced circuits to a wide range of balanced impedances. North Hills offers three series with varying frequency ranges to cover a wide... (read more)
North Hills Signal Processing - Unbalanced to Highly Balanced Signal Converters
Measure system susceptibility to noise and interference; Convert signals from a coax source to a highly balanced output. 50ohm coax input impedance. Balanced outputs 100, 110, 120, 135, 150ohm... (read more)
North Hills Signal Processing - Video Isolation Transformers -
DC-coupled "Humbuckers" for power line isolation. Humbuckers are common mode chokes that offer high impedance to common mode currents to ground, while being ideally transparent to line to line... (read more)
North Hills Signal Processing - Balanced Impedance Adaptor
To facilitate high-accuracy impedance measurements, inputs to Impedance Analyzers and LCR Meters are configured as four-terminal Kelvin connections –... (read more)
North Hills Signal Processing - Video Isolation Transformers - "Humstoppers"
North Hills' "Humstoppers" provide quick, cost-effective solutions to interference due to differences in ground potential or induced common-mode noise. Removal of "humbars" or other interference in... (read more)
Georator Corp. - Frequency Converter, Solid State, Triathlon III
The Triathalon III Solid State (Electronic) AC Frequency Converter is a fixed output converter that uses IGBT/PWM technology and has a pure sinewave output. It has 150% Overload Capacity and is... (read more)
Filter Concepts, Inc. - 3E Series 3-Phase Switch Mode EMI Filter
3E Series "T" section filters are designed to attenuate differential (L/N) and common mode (L/G) EMI from switch mode power circuits and power supplies in balanced or unbalanced 3 phase load... (read more)
 
Topics of Interest
Bernd A. Schincke 14.1 Introduction For decades high frequency circuits were developed using unbalanced (non-symmetrical) structures. Typical line systems, representing this kind of structure,... (Read More)
A Balun, as shown in Fig. 1, is a two-winding transformer designed to convert a single ended (i.e. one side grounded) signal to one balanced with respect to ground. The balanced winding may or may not... (Read More)
A Balun, as shown in Fig. 1, is a two-winding transformer designed to convert a single ended (i.e. one side grounded) signal to one balanced with respect to ground. The balanced winding may or may not... (Read More)
Fig. 1 shows a two-port balanced network, terminated on both sides, by characteristic impedances Z1 and Z2. Most often Z1 = Z2. Measurement of the important network characteristic, transmission,... (Read More)
Several specialized analytical tools have been developed to aid in the solution of power and power electronics circuits. Learning these tools can make the design job easier, especially when studying... (Read More)
See more product announcements for RF Transformers
WIDEBAND TRANSFORMERS - PC-Mount NA-Series

WIDEBAND TRANSFORMERS - PC-Mount NA-Series
North Hills Signal Processing


MIL-STD-1553 DATA BUS TRANSFORMERS

MIL-STD-1553 DATA BUS TRANSFORMERS
North Hills Signal Processing


Custom RF Transformers

Custom RF Transformers
Datatronics™


11 See more product announcements for RF Transformers