SAT - Bandpass Filters

System & Application Technology (SAT) is a publicly traded company on KOSDAQ and provides components and sub-systems for the telecommunication industry. SAT built its reputation as a leader in communication products in South Korea by developing key items for the telecommunication systems through partnerships with major system and service providers in South Korea.

Thanks to our efficient management and vast R&D experience, SAT offers a wide variety of bandpass filters, delay filters, components and integrated systems for CDMA, WCDMA, TDMA, GSM, DBM, WiBro and WiMAX.

TRANSMISSION AND RECEPTION FILTERS

Our filter products are ideal components for sending and receiving desired signals in repeaters, base stations, WiBro, DBM, etc.

150W DMB BANDPASS FILTER

The large bandpass filter for the space DMB repeater covers a pass band range of 2,632.5MHz to 2,652.5MHz. It is designed to operate in extreme temperatures, high humidity and shock conditions, and has a maximum output power of 150W CW.

Dielectric resonators are used in this bandpass filter to provide a high Q factor.

50W DMB BANDPASS FILTER

The pass band range for the small bandpass filter for DMB repeaters is 174.512MHz to 179.504MHz. It is also ideal for operation in extreme temperatures, high humidity and shock conditions. Its maximum power output is 50W CW.

150W WIBRO BANDPASS FILTER

The large bandpass filter for the WiBro repeater covers a pass band range of 2,300MHz to 2,327MHz. It is highly rugged, being able to function in extreme temperatures and high-humidity conditions. Its maximum output power is 150W CW.

This large bandpass filter uses electric resonators to provide a high Q factor, and coaxial resonators along with LPF are used to shrink and ensure superb spurious characteristics.

D-TV BANDPASS FILTER

The bandpass filter for D-TV (a broadcasting station), has a pass band of 752MHz to 758MHz. Designed to operate in extreme temperatures, high humidity and shock conditions, it has a maximum power output of 300W CW.

X-BAND RF MODULE BANDPASS FILTER

The bandpass filter for X-band military RF modules has a pass band of 7,250MHz to 7,790MHz. It is rugged, being able to operate in extreme temperatures, high humidity and shock conditions.

The bandpass filter for X-band military RF modules possesses one-body housing and a resonator.

ICS REPEATER BANDPASS FILTER

The ICS repeater bandpass filter has a pass band of 1,960MHz to 1,980MHz (RVS), and 2,150MHz to 2,170MHz (FWD).

Designed to operate in extreme temperatures, high humidity and shock conditions, it has one-body housing and a resonator.

RF PASSIVE MODULE DELAY FILTERS

Our RF passive module for CDMA, WCDMA, DMB and WiBro Base Transceiver Stations (BTS) and repeaters has two delay filters used in LPAs to improve linearity.

The first delay filter has a delay time of 13.5ns to 16ns, and the following characteristics:

• P1 to P2: I/L 1.2dB (1.35dB)
• P1 to P3: CPL 30dB
• P4 to P2: CPL 10.6dB
• P1 to P5: CPL 30dB
• P2 to P6: CPL 30dB

The second delay filter has a longer delay time of 15.8ns to 16.2ns, and these characteristics:

• P1 to P2: I/L 1.25dB (1.35dB)
• P1 to P3: CPL 30dB
• P4 to P2: CPL 10.6dB
• P1 to P5: CPL 30dB
• P2 to P6: CPL 30dB

CDMA AND WCDMA BTS FRONT END UNIT

The Front End Unit (FEU) for CDMA and WCDMA BTS transmits an RF signal from HPAs to antennas, and receives RF signals from antennas to down converters

Its modular design provides easy expandability of RF channels, and it has coupling ports for Tx or Rx signal monitoring, and an alarm function for LNA failure.

The FEU is suitable for BTS and Base Station Units (BSU).

BANDPASS DUPLEXERS

These bandpass type duplexers are particularly suited for use with bandwidth duplex stations in frequency congested areas.

The bandpass duplexer not only isolates the receiver from its associated transmitter, but also provides substantial protection to the receiver from other transmitters in the area. It is suitable for optical, RF, ICS and microwave repeaters.

RESEARCH AND DEVELOPMENT

Since its inception in 1994, the company has been committed to total customer satisfaction and R&D, which is reflected in its philosophy, "SAT cherishes future values: customer satisfaction, top priority to technology and trust management!"