Santa Clara, Calif. Agilent Technologies Inc. has announced the availability of an embedded local oscillator (LO) measurement capability for its PNA series of network analyzers for testing wireless and satellite communications systems.
The embedded LO measurement capability can be used with arbitrarily narrow bandwidth devices, which the company says is not possible with other methods requiring amplitude and complex modulation. Results from the embedded LO measurement capability essentially match those achieved by phase locking two independent LO sources. On a typical Ka band satellite converter, delay accuracy as small as 125 ps has been achieved, according to the company.
The embedded LO measurement capability allows users to accurately measure the relative phase and absolute group-delay responses of a device-under-test (DUT) with a built-in LO source, and without having to access a common reference signal. With its ability to test frequency converters without having to directly access a common reference signal, this new measurement capability sets a new standard for RF and microwave test engineers and technicians working on wireless and satellite communications systems, says Agilent.
This solution offers the capability to track the intermediate frequency (IF) of the DUT. This allows the frequency of the external LO used for the reference channel mixer to be adjusted to accommodate offset and drift in the DUT's embedded LO source. The phase of the DUT's IF is also tracked to accommodate phase shift or slight frequency error. Tracking is done using software techniques that do not require additional phase-locking hardware or added pilot tones.
Pricing: The embedded LO measurement capability for the PNA series network analyzers is available now as a software option at a list price of $10,200.
Product information: firmware update
Agilent Technologies Inc., 1-800-829-4444, item number 8167, www.agilent.com