Wireless Communication Equipments | Test and Measurement World
This page covers Wireless communication equipments for test and measurement. The common wireless communication equipments include signal generator, signal analyzer, power meter, spectrum analyzer, frequency counter, function generator, network analyzer, field strength meter etc.
We have already seen common low frequency test equipments sich as digital multimeters, oscilloscopes, frequency counters etc. For high frequency complex measurements, specific test equipments are required. These equipments perform measurements as per radio conformance and protocol conformance specifications published by their respective management forum.
Following are the communication tests usually carried out by wireless equipments.
Transmitter Tests: The purpose of transmitter tests is to assure that transmitter part of the communication system is functioning as desired. The transmitter is used to transmit the signal using RF antenna. The common transmitter tests include power spectrum, VSWR, operating frequency, gain, harmonics output, spurious output etc.
Antenna Tests: The purpose of antenna tests is to assure that antenna provides required gain and will generate appropriate radiation patterns as per antenna under design. The common antenna tests are radiation pattern, directivity, gain, bandwidth etc. Radiation patterns are of two types viz. near field and far field. The other tests include EMI (Electromagnetic Interference), EMC (Electromagnetic compatibility) etc.
Receiver Tests: The purpose of receiver tests is to assure that receiver part of the communication system is functioning as desired. The receiver is used to receive the signal from RF antenna. The common receiver tests include input power, sensitivity, gain, noise figure, image rejection, blocking, ACPR, ACLR, third order intercept point etc.
Wireless Communication Equipments | Wireless Equipments
Following are the most common wireless communication equipments used for various
RF and baseband tests.
Signal generator : The signal generator generates radio frequency signal as per user configurations. There are two common types of signal generators viz. scalar and vector. It is used to provide complex RF signal as input for testing communication receiver. It has built-in sweep generation and AWG (Arbitrary Waveform Generation) functionalities.
Signal analyzer: The signal analyzer analyzes radio frequency signal as per user configurations. It is used for testing communication transmitter. The test and measurement companies such as R&S, NI, Keysight and Anritsu are developing signal generator and signal analyzer equipments as per various wireless standards viz. wlan, wimax, gsm, lte, 5G etc. Refer difference between VSG vs VSA >> for more information.
power meter: It is used to measure absolute RF power. It usually comes with power sensor. It is available in various sizes and configurations. Power meters provide either analog reading or digital reading. It measures power in dBm. The dBm and dBW are the units of power.
Spectrum analyzer: It is a frequency domain equipment which displays frequency on X-axis and amplitude or power on Y-axis. It is used for frequency measurements, harmonics and spurious measurements.
Frequency counter: It provides frequency output in digital read out format as per its design.
Function generator: It is basically a signal generator which is designed to generate sine waves, square waves, triangular waves etc. as per user defined frequency range. It has output impedance of about 50 Ohm typically.
Network analyzer: It is designed to analyze linear RF circuits. There are two types viz. scalar and vector. Refer SNA vs VNA >>
Field strength meter:It is a portable device which is used to detect the presence of RF (Radio Frequency) signals near antenna. It provides strength of the EM waves reaching the meter. It uses vertical whip antenna.
Refer RF communication equipments >> which provides links for various RF equipments such as waveguide mixer, PIM analyzer, sound level meter, noise figure meter, surge generator, drive test toos, noise dosimeter, GTEM cell etc.
Other Wireless Communication Equipments
Following are the list of wireless equipments used for communication testing as per latest wireless standards such as LTE, WLAN, Bluetooth, Zigbee, GNSS etc. These equipments provide analysis of entire protocol stack as well as individual protocol layers viz. layer-1 (PHY), layer-2 (MAC), layer-3 (IP) and above.
LTE WiFi MIMO Channel Emulator: This page of equipments section of T & M World covers MIMO Channel Emulator.
It mentions features and specifications of MIMO Channel Emulator used for WiFi and LTE testing.
CMU200 vs CMW500: This page compares CMU200 and CMW500 radio communication test sets.
WLAN Test and Measurement Equipments: This page covers WLAN test and measurement equipments from various vendors. These WLAN equipments are used for testing radio conformance,
protocol conformance and pre-certification testing of the WLAN device.
Wireless Sniffer: This page covers wireless sniffer basics with block diagram.
It mentions manufacturers of wireless sniffer used for wifi, bluetooth, zigbee, z-wave, LTE, GSM,
IoT wireless packet analysis.
Bluetooth testing: This page covers Bluetooth testing.
It describes bluetooth device transmitter and receiver testing including RF and baseband(PHY) conformance cases.
Bluetooth test tools from leading vendors or manufacturers are also mentioned.
LTE testing: This page covers LTE testing.It describes LTE device transmitter and receiver testing
RF and baseband(PHY) conformance cases. LTE test tools from leading vendors or manufacturers are also mentioned.
GNSS Simulator: This page covers GNSS simulator basics and mentions GNSS simulator specifications and GNSS receiver test setup.
It also mentions vendors of GNSS simulator.