Filter of Fu Manwei SAW is enclosed in the specific application in wireless communication

SAW filter of Fu Manwei is having wide application in wireless communication. In wireless communication system, SAW filter basically leads alternative amplifier with Yu Pin (FSA) with frequency synthesizer (PLL) in waiting for module, use at filter to be mixed except stray signal assure signal quality. SAW filter still can be used at the modem (Modem) in, use at filter to divide noise and the stability that assure signal. In the mobile phone wireless communication applies in, SAW filter has high-powered, measure because of its small, low insert the advantage such as loss, select-high sex and good temperature stability, can effectively filter reduces signal noise except the frequency that does not need, ensure the signal method of clean clarity.

In addition, SAW filter of Fu Manwei is corresponding frequency paragraph choice and signal processing respect are producing main effect. Its can withhold specific frequency paragraph the signal inside, and will specific frequency paragraph the signal filter outside is divided, assured the accuracy of communication and stability. Although SAW filter is used under 1.5GHz, limits of applicable frequency band is relatively lesser, foreground accepts frequency band restriction, but because its cost is low,won’t be washed out.

The radio frequency filter that reply of rich full small Dong Bi weighs to chip of company 5G radio frequency includes partial class is compositive. Filter product follow-up of Fu Manwei can part with odd chip, make chip of compositive model group with other chip two kinds of forms appear, push to the market.

Filter of Fu Manwei SAW encloses in the specific application in wireless communication to include:

• Module of radio frequency front: SAW filter can be used at module of radio frequency front, be like aerial switch, multichannel implement, amplifier of filter, power and low noise amplifier, in order to improve signal transmission quality and efficiency.
• The mobile phone corresponds: In the smartphone, SAW filter is used at different frequency paragraph signal filter wave, be like 2G, 3G, 4G and 5G network, and the wireless communication technology such as Wi-Fi, blue tooth, reduce interference in order to ensure clear communication is mixed.
• Equipment of content couplet network: As the development of content couplet net, equipment of all sorts of content couplet network apparel like intelligent household, intelligence equipment also need SAW filter to realize reliable wireless communication.
• Satellite communications: In satellite communications system, SAW filter is used at filter wave and choice specific frequency paragraph signal, in order to ensure the stability between satellite and ground facilities corresponds.
• The military affairs corresponds: Martial communication asks to the confidential sex of signal and interference rejection sex taller, SAW filter can be used at filter wave and choice specific frequency paragraph signal, in order to raise the security of communication and dependability.

The function that filter of Fu Manwei SAW encloses is optimized

SAW filter of Fu Manwei is enclosed in function to optimized a respect to take a variety of strategy and technical step. Above all, through optimizing the structural design of filter, if adjust fork to point to the appearance of electrode, span and amount, came true more the frequency choice with accurate essence and lower insertion loss. Use the advanced data that suppress report, promoted the function of filter and stability.

On workmanship, raise precision and consistency ceaselessly, reduce the craft error effect to function. For example, the deposit process that controls electrode accurately and the unripe chief condition of the material that suppress report, in order to ensure the function of filter achieves design requirement.

In addition, be aimed at temperature stability problem, compensate a technology through using special temperature, make the property that filter still can hold stable below different temperature environment. For example, below high temperature or microtherm condition, the frequency of filter is answered and insert loss change is minor, assured the stability of communication quality.

To increase the interference rejection capacity of filter, optimized the screen structure of filter, reduced outside electromagnetism effectively to disturb the influence of pair of filter function.

Anyhow, filter of Fu Manwei SAW is enclosed in wireless communication to producing main effect, can improve signal quality, reduce much frequency of interference, implementation paragraph communication, satisfy the requirement of different application setting. As the ceaseless development of wireless communication technology, the function to SAW filter and compositive degree also raised taller requirement.