Pulsar

Pulsar Microwave - High Performance Components

Pulsar Microwave Corporation, established in 1987, is a supplier of high performance surface mount, plug-in and connectorised components, covering select frequency bands up to 85 GHz. Pulsar is a privately owned company with the design, manufacture, test and inspection controlled from their Clifton, New Jersey facility.

Pulsar focuses primarily on high performance products. Their dedicated team of design, sales and applications engineers strive to maintain a close working relationship with customers, in an effort to offer optimum electrical performance for each particular application. With these goals in mind, the majority of Pulsar Microwave products are custom designs. However, these custom products do not carry the usual custom price tags. In most cases, a custom design is simply a modification of one of their existing designs.

Product Families

  • Attenuators
  • Bias Tees
  • Directional Couplers
  • DC Blocks
  • Power Dividers/Combiners

Product Families Continued

  • Frequency Doublers
  • Hybrid Couplers
  • I&Q Networks
  • Mixers
  • Phase Shifters
  • Switches
Pulsar couplers and power dividers

Modulators & Demodulators

Pulsar Microwave Corporation offers a full line of Modulators & Demodulators covering select frequency bands up to 8 GHz. These complex designs incorporate several of their lower level products to achieve optimum performance for use in communications systems. By employing miniaturization techniques and precise matching for component selection, Pulsar is able to offer these high performance units in very small packages, including surface mount.

Absorbtive & Reflective Switches

Absorptive switches incorporate 50 ohm terminations in each of the output ports, to present a low VSWR in its OFF position as well as in its ON state.

Reflective switches conduct RF power when the diode is reverse biased and reflect RF power when forward biased.

Understanding Directional Coupler Terms

Coupling
The attenuation of a signal injected into the input port as seen at the coupled port.

Coupling Flatness
The maximum variation in the coupling value over a specified frequency range.

Insertion Loss
The loss of unrecoverable power dissipated within the unit.

Coupling Value Coupling Loss (dB)
6 dB 1.2
10 dB 0.46
15 dB 0.14
20 dB 0.04
30 dB 0.004

Mainline Loss
The difference in power between the input signal and the output signal. It is the sum of the Insertion Loss and Coupling Loss.

Directivity
The level of output power at the coupled port when a signal is injected into the unit in the desired direction minus the level of output power at the coupled port when the same signal is injected in the opposite direction. In a bi-directional unit, it is the difference in output power between the two coupled ports as seen from a constant signal in the same direction.

VSWR
The VSWR (Voltage Standing Wave Ratio) at any given port (with all other ports terminated) defines the degree of mismatch between the input signal and the input port and thus is a measure of the loss of input signal at that port.